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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2015	Aug. 13, 2015
Document and Entity Information
Entity Registrant Name	RECKSON OPERATING PARTNERSHIP LP
Entity Central Index Key	0000930810
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		0
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Commercial real estate properties, at cost:
Land and land interests	$ 1,741,350	$ 1,776,457
Building and improvements	4,272,732	4,353,081
Building leasehold and improvements	1,073,678	1,073,678
Commercial real estate properties, gross	7,087,760	7,203,216
Less: accumulated depreciation	(1,192,531)	(1,123,412)
Total commercial real estate properties, net	5,895,229	6,079,804
Assets held for sale	138,421	0
Cash and cash equivalents	40,050	34,641
Restricted cash	37,554	38,844
Tenant and other receivables, net of allowance of $5,592 and $5,820 in 2015 and 2014, respectively	31,299	25,712
Deferred rents receivable, net of allowance of $14,716 and $17,745 in 2015 and 2014, respectively	208,115	199,045
Preferred equity and other investments, net of discounts and deferred origination fees of $425 and $244 in 2015 and 2014, respectively	209,129	173,194
Deferred costs, net of accumulated amortization of $81,814 and $77,557 in 2015 and 2014, respectively	134,367	123,918
Other assets	89,642	105,951
Total assets	6,783,806	6,781,109
Liabilities
Mortgages payable	500,000	620,000
Revolving credit facility	705,000	385,000
Term loan and senior unsecured notes	1,788,049	1,788,001
Accrued interest payable and other liabilities	27,745	27,061
Accounts payable and accrued expenses	54,061	66,478
Deferred revenue	110,854	130,661
Deferred land leases payable	1,387	1,215
Security deposits	36,855	36,195
Liabilities related to assets held for sale	5,770	0
Total liabilities	3,229,721	3,054,611
Commitments and contingencies
Capital
General partner capital	3,196,070	3,381,383
Limited partner capital	0	0
Accumulated other comprehensive loss	(2,702)	(3,106)
Total ROP partner's capital	3,193,368	3,378,277
Noncontrolling interests in other partnerships	360,717	348,221
Total capital	3,554,085	3,726,498
Total liabilities and capital	$ 6,783,806	$ 6,781,109

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Tenant and other receivables, allowance	$ 5,592	$ 5,820
Deferred rents receivable, allowance	14,716	17,745
Preferred equity investments, deferred origination fees and discounts	425	244
Deferred costs, accumulated amortization	$ 81,814	$ 77,557

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues
Rental revenue, net	$ 153,082	$ 142,440	$ 302,477	$ 283,438
Escalation and reimbursement	23,279	21,540	46,210	42,684
Investment income	4,268	8,777	7,871	18,052
Other income	12,263	638	12,922	1,249
Total revenues	192,892	173,395	369,480	345,423
Expenses
Operating expenses, including $2,093 and $3,925 in 2015 and $1,984 and $3,457 in 2014 of related party expenses	38,444	36,889	80,823	75,386
Real estate taxes	35,180	32,569	69,704	63,570
Ground rent	5,184	5,235	10,470	10,470
Interest expense, net of interest income	27,649	31,625	55,378	63,425
Amortization of deferred financing costs	1,280	1,614	3,227	3,169
Depreciation and amortization	50,241	49,949	99,669	99,791
Transaction related costs	23	117	39	988
Marketing, general and administrative	160	90	256	166
Total expenses	158,161	158,088	319,566	316,965
Income from continuing operations before equity in net income from unconsolidated joint ventures and loss on early extinguishment of debt	34,731	15,307	49,914	28,458
Equity in net income from unconsolidated joint ventures	853	1,094	1,702	1,094
Loss on early extinguishment of debt	0	(519)	(49)	(519)
Income from continuing operations	35,584	15,882	51,567	29,033
Net income from discontinued operations	0	1,348	0	2,054
Gain on sale of discontinued operations	0	117,829	0	117,829
Net income	35,584	135,059	51,567	148,916
Net income attributable to noncontrolling interests in other partnerships	(6,378)	(801)	(6,930)	(862)
Net income attributable to ROP common unitholder	29,206	134,258	44,637	148,054
Income from continuing operations	29,206	15,081	44,637	28,171
Discontinued operations	$ 0	$ 119,177	$ 0	$ 119,883

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Related party expenses included in operating expenses	$ 2,093	$ 1,984	$ 3,925	$ 3,457

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income attributable to ROP common unitholder	$ 29,206	$ 134,258	$ 44,637	$ 148,054
Other comprehensive income:
Change in net unrealized gain on derivative instruments	223	179	404	377
Comprehensive income attributable to ROP common unitholder	$ 29,429	$ 134,437	$ 45,041	$ 148,431

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Consolidated Statement of Capital - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Consolidated Statement of Capital - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2015
Increase (Decrease) in Partners' Capital
Beginning Balance		$ 3,726,498
Contributions		732,133
Distributions		(956,517)
Net income	$ 35,584	51,567
Other comprehensive income		404
Ending Balance	3,554,085	3,554,085
General Partner's Capital Class A Common Units \| Class A Common Units
Increase (Decrease) in Partners' Capital
Beginning Balance		3,381,383
Contributions		726,009
Distributions		(955,959)
Net income		44,637
Ending Balance	3,196,070	3,196,070
Limited Partner's Capital
Increase (Decrease) in Partners' Capital
Beginning Balance		0
Ending Balance	0	0
Noncontrolling Interests In Other Partnerships
Increase (Decrease) in Partners' Capital
Beginning Balance		348,221
Contributions		6,124
Distributions		(558)
Net income		6,930
Ending Balance	360,717	360,717
Accumulated Other Comprehensive (Loss) Income
Increase (Decrease) in Partners' Capital
Beginning Balance		(3,106)
Other comprehensive income		404
Ending Balance	$ (2,702)	$ (2,702)

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating Activities
Net income	$ 51,567	$ 148,916
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	102,896	103,393
Equity in net income from unconsolidated joint venture	(1,702)	(1,094)
Distributions of cumulative earnings from unconsolidated joint ventures	1,702	612
Loss on early extinguishment of debt	49	519
Gain on sale of discontinued operations	0	(117,829)
Deferred rents receivable	(10,298)	(10,236)
Other non-cash adjustments	(16,816)	(23,202)
Changes in operating assets and liabilities:
Restricted cash—operations	702	(2,531)
Tenant and other receivables	(6,060)	2,955
Deferred lease costs	(25,470)	(3,999)
Other assets	4,141	(4,800)
Accounts payable, accrued expenses and other liabilities	1,275	718
Deferred revenue and land leases payable	(1,768)	(264)
Net cash provided by operating activities	100,218	93,158
Investing Activities
Additions to land, buildings and improvements	(34,144)	(45,842)
Escrowed cash—capital improvements/acquisition deposits	388	(1,071)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	10	0
Net proceeds from disposition of real estate/joint venture interest	0	137,059
Origination of preferred equity investments	(32,139)	(14,173)
Net cash (used in) provided by investing activities	(65,885)	75,973
Financing Activities
Repayments of mortgages and other loans payable	(120,000)	(82,181)
Proceeds from credit facility and senior unsecured notes	1,055,000	683,000
Repayments of credit facility and senior unsecured notes	(735,007)	(520,000)
Contributions from common unitholder	726,009	732,007
Contributions to noncontrolling interests in other partnerships	6,124	0
Distributions to noncontrolling interests in other partnerships	(558)	(3,214)
Distributions to common unitholder	(955,959)	(983,346)
Deferred loan costs and capitalized lease obligation	(4,533)	(2,671)
Net cash used in financing activities	(28,924)	(176,405)
Net increase (decrease) in cash and cash equivalents	5,409	(7,274)
Cash and cash equivalents at beginning of period	34,641	48,070
Cash and cash equivalents at end of period	40,050	40,796
Supplemental Disclosure of Non-Cash Investing and Financing Activities:
Tenant improvements and capital expenditures payable	5,845	6,471
Deferred leasing payable	6,915	230
Change in fair value of hedge	226	215
Transfer to assets held for sale	138,421	0
Transfer to liabilities related to assets held for sale	$ 5,770	$ 0

Organization and Basis of Presentation

6 Months Ended

Jun. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Basis of Presentation

Reckson Operating Partnership, L.P., or ROP, commenced operations on June 2, 1995. The sole general partner of ROP is a wholly-owned subsidiary of SL Green Operating Partnership, L.P., or the Operating Partnership. The sole limited partner of ROP is the Operating Partnership. The Operating Partnership is 96.22% owned by SL Green Realty Corp., or SL Green, as of June 30, 2015. SL Green is a self-administered and self-managed real estate investment trust, and is the sole managing general partner of the Operating Partnership. Unless the context requires otherwise, all references to "we," "our," "us" and the "Company" means ROP and all entities owned or controlled by ROP.

ROP is engaged in the acquisition, ownership, management and operation of commercial and residential real estate properties, principally office properties, and also owns land for future development, located in New York City, Westchester County, Connecticut and New Jersey, which collectively is also known as the New York Metropolitan area.

SL Green transferred one property and 40% of SL Green's tenancy in common interest in a fee interest with total assets of $207.7 million during the first quarter of 2015 to ROP, and one additional property and the remaining 60% of SL Green's tenancy in common interest in a fee interest with total assets of $187.3 million during second quarter of 2015 to ROP. Subsequent to June 30, 2014, SL Green transferred four properties with total assets aggregating to $786.4 million as of December 31, 2014 to ROP. Under the business combinations guidance (Accounting Standard Codification, or ASU, 805-50), these transfers were determined to be transfers of businesses between the indirect parent company and its wholly-owned subsidiary. As such, the assets and liabilities of the properties were transferred at their carrying values and were recorded as of the beginning of the current reporting period as though the assets and liabilities had been transferred at that date. The financial statements and financial information presented for all prior periods have been retrospectively adjusted to furnish comparative information.

As of June 30, 2015, we owned the following interests in commercial and residential properties in the New York Metropolitan area, primarily in midtown Manhattan. Our investments in the New York Metropolitan area also include investments in Brooklyn, Westchester County, Connecticut and New Jersey, which are collectively known as the Suburban properties:



Location	Type	Number of Properties	Approximate Square Feet	Weighted Average Occupancy⁽¹⁾
Commercial:
Manhattan	Office	15	8,239,645	95.5	%
	Retail⁽²⁾⁽³⁾	5	352,892	98.8	%
	Fee Interest	2	197,654	100.0	%
		22	8,790,191	95.7	%
Suburban	Office	20	3,417,900	82.3	%
	Retail	1	52,000	100.0	%
		21	3,469,900	82.5	%
Total commercial properties		43	12,260,091	92.0	%
Residential:
Manhattan	Residential⁽²⁾	—	222,855	96.4	%
Total portfolio		43	12,482,946	92.0	%

____________________________________________________________________


(1)	The weighted average occupancy for commercial properties represents the total leased square feet divided by total available rentable square feet. The weighted average occupancy for residential properties represents the total occupied units divided by total available units.


(2)	As of June 30, 2015, we owned a building that was comprised of approximately 270,132 square feet of retail space and approximately 222,855 square feet of residential space. For the purpose of this report, we have included the building in the retail properties count and have bifurcated the square footage into the retail and residential components.


(3)	Includes two retail properties held for sale as of June 30, 2015.

As of June 30, 2015, we also held preferred equity and other investments with a book value of $209.1 million.

Basis of Quarterly Presentation

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States, or U.S. GAAP, for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for the fair presentation of the financial position of the Company at June 30, 2015 and the results of operations for the periods presented have been included. The operating results for the period presented are not necessarily indicative of the results that may be expected for the year ending December 31, 2015. These financial statements should be read in conjunction with the financial statements and accompanying notes included in our Annual Report on Form 10-K for the year ended December 31, 2014.

The consolidated balance sheet at December 31, 2014 has been derived from the audited financial statements as of that date, and adjusted for the transfer of three properties to ROP in 2015 but does not include all the information and footnotes required by U.S. GAAP for complete financial statements. Also, as a result of the transfer of these three properties in 2015 and four properties in 2014 to ROP, the consolidated statements of operations and comprehensive income for the three and six months ended June 30, 2014, statement of cash flows for the six months ended June 30, 2014 and related financial information have been adjusted to furnish comparative information.

Significant Accounting Policies

6 Months Ended

Jun. 30, 2015

Accounting Policies [Abstract]

Significant Accounting Policies

Principles of Consolidation

The consolidated financial statements include our accounts and those of our subsidiaries, which are wholly-owned or controlled by us. Entities which we do not control through our voting interest and entities which are variable interest entities, but where we are not the primary beneficiary, are accounted for under the equity method or as preferred equity investments. See Note 5, "Preferred Equity and Other Investments." ROP's investments in majority-owned and controlled real estate joint ventures are reflected in the financial statements on a consolidated basis with a reduction for the noncontrolling partners' interests. All significant intercompany balances and transactions have been eliminated.

We consolidate a variable interest entity, or VIE, in which we are considered the primary beneficiary. The primary beneficiary is the entity that has (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could be significant to the VIE.

A noncontrolling interest in a consolidated subsidiary is defined as the portion of the equity (net assets) in a subsidiary not attributable, directly or indirectly, to us. Noncontrolling interests are required to be presented as a separate component of capital in the consolidated balance sheet and the presentation of net income is modified to present earnings and other comprehensive income attributed to controlling and noncontrolling interests.

We assess the accounting treatment for each joint venture and preferred equity investment. This assessment includes a review of each joint venture or limited liability company agreement to determine which party has what rights and whether those rights are protective or participating. For all VIEs, we review such agreements in order to determine which party has the power to direct the activities that most significantly impact the entity's economic performance. In situations where we and our partner approve, among other things, the annual budget, receive a detailed monthly reporting package from us, meet on a quarterly basis to review the results of the joint venture, review and approve the joint venture's tax return before filing, and approve all leases that cover more than a nominal amount of space relative to the total rentable space at each property, we do not consolidate the joint venture as we consider these to be substantive participation rights that result in shared power of the activities that most significantly impact the performance of the joint venture. Our joint venture agreements typically contain certain protective rights such as the requirement of partner approval to sell, finance or refinance the property and the payment of capital expenditures and operating expenditures outside of the approved budget or operating plan.

Investment in Commercial Real Estate Properties

On a periodic basis, we assess whether there are any indications that the value of our real estate properties may be other than temporarily impaired or that their carrying value may not be recoverable. A property's value is considered impaired if management's estimate of the aggregate future cash flows (undiscounted and without interest charges for consolidated properties) to be generated by the property is less than the carrying value of the property. To the extent impairment has occurred, the loss will be measured as the excess of the carrying amount of the property over the calculated fair value of the property. We also evaluate our real estate properties for potential impairment when a real estate property has been classified as held for sale. Real estate assets held for sale are valued at the lower of their carrying value or fair value less costs to sell. We do not believe that the values of any of our consolidated properties were other than temporarily impaired at June 30, 2015.

We allocate the purchase price of real estate to land and building (inclusive of tenant improvements) and, if determined to be material, intangibles, such as the value of the above- and below-market leases and origination costs associated with the in-place leases. We depreciate the amount allocated to building (inclusive of tenant improvements) over their estimated useful lives, which generally range from three to 40 years. We amortize the amount allocated to the above- and below-market leases over the remaining term of the associated lease, which generally range from one to 14 years, and record it as either an increase (in the case of below-market leases) or a decrease (in the case of above-market leases) to rental income. We amortize the amount allocated to the values associated with in-place leases over the expected term of the associated lease, which generally ranges from one to 14 years. If a tenant vacates its space prior to the contractual termination of the lease and no rental payments are being made on the lease, any unamortized balance of the related intangible will be written off. The tenant improvements and origination costs are amortized as an expense over the remaining life of the lease (or charged against earnings if the lease is terminated prior to its contractual expiration date). We assess fair value of the leases based on estimated cash flow projections that utilize appropriate discount and capitalization rates and available market information. Estimates of future cash flows are based on a number of factors including the historical operating results, known trends, and market/economic conditions that may affect the property. To the extent acquired leases contain fixed rate renewal options that are below-market and determined to be material, we amortize such below-market lease value into rental income over the renewal period.

We recognized an increase of $6.9 million, $12.6 million, $5.4 million and $11.2 million in rental revenue for the three and six months ended June 30, 2015 and 2014, respectively, for the amortization of aggregate below-market leases in excess of above-market leases and a reduction in lease origination costs, resulting from the allocation of the purchase price of the applicable properties.

The following summarizes our identified intangible assets (acquired above-market leases and in-place leases) and intangible liabilities (acquired below-market leases) as of June 30, 2015 and December 31, 2014 (in thousands):



	June 30, 2015			December 31, 2014
Identified intangible assets (included in other assets):
Gross amount	$	289,180		$	293,354
Accumulated amortization	(221,273		)	(212,957		)
Net	$	67,907		$	80,397
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	434,723		$	443,520
Accumulated amortization	(324,960		)	(315,889		)
Net	$	109,763		$	127,631

____________________________________________________________________


(1)	As of June 30, 2015, $1.8 million and $5.8 million of net intangible assets and net intangible liabilities, respectively, were reclassed to assets held for sale and liabilities related to assets held for sale

Investment in Unconsolidated Joint Ventures

We may originate loans for real estate acquisition, development and construction, where we expect to receive some or all of the residual profit from such projects. When the risk and rewards of these arrangements are essentially the same as an investor or joint venture partner, we account for these arrangements as real estate investments under the equity method of accounting for investments. Otherwise, we account for these arrangements consistent with our loan accounting for our preferred equity investments.

Revenue Recognition

Rental revenue is recognized on a straight-line basis over the term of the lease. Rental revenue recognition commences when the tenant takes possession or controls the physical use of the leased space. In order for the tenant to take possession, the leased space must be substantially ready for its intended use. To determine whether the leased space is substantially ready for its intended use, management evaluates whether we are or the tenant is the owner of tenant improvements for accounting purposes. When management concludes that we are the owner of tenant improvements, rental revenue recognition begins when the tenant takes possession of the finished space, which is when such tenant improvements are substantially complete. In certain instances, when management concludes that we are not the owner (the tenant is the owner) of tenant improvements, rental revenue recognition begins when the tenant takes possession of or controls the space. When management concludes that we are the owner of tenant improvements for accounting purposes, we record amounts funded to construct the tenant improvements as a capital asset. For these tenant improvements, we record amounts reimbursed by tenants as a reduction of the capital asset. When management concludes that the tenant is the owner of tenant improvements for accounting purposes, we record our contribution towards those improvements as a lease incentive, which is included in deferred costs, net on our consolidated balance sheets and amortized as a reduction to rental revenue on a straight-line basis over the term of the lease. The excess of rents recognized over amounts contractually due pursuant to the underlying leases are included in deferred rents receivable on the consolidated balance sheets. We establish, on a current basis, an allowance for future potential tenant credit losses, which may occur against this account. The balance reflected on the consolidated balance sheets is net of such allowance.

In addition to base rent, our tenants also generally will pay their pro rata share of increases in real estate taxes and operating expenses for the building over a base year. In some leases, in lieu of paying additional rent based upon increases in building operating expenses, the tenant will pay additional rent based upon increases in the wage rate paid to porters over the porters' wage rate in effect during a base year or increases in the consumer price index over the index value in effect during a base year. In addition, many of our leases contain fixed percentage increases over the base rent to cover escalations. Electricity is most often supplied by the landlord either on a sub-metered basis, or rent inclusion basis (i.e., a fixed fee is included in the rent for electricity, which amount may increase based upon increases in electricity rates or increases in electrical usage by the tenant). Base building services other than electricity (such as heat, air conditioning and freight elevator service during business hours, and base building cleaning) are typically provided at no additional cost, with the tenant paying additional rent only for services which exceed base building services or for services which are provided outside normal business hours. These escalations are based on actual expenses incurred in the prior calendar year. If the expenses in the current year are different from those in the prior year, then during the current year, the escalations will be adjusted to reflect the actual expenses for the current year.

We record a gain on sale of real estate when title is conveyed to the buyer, subject to the buyer's financial commitment being sufficient to provide economic substance to the sale and we have no substantial economic involvement with the buyer.

Interest income on preferred equity investments is accrued based on the outstanding principal amount and contractual terms of the instruments and when, in the opinion of management, it is deemed collectible. Several of the preferred equity investments provide for accrual of interest at specified rates, which differ from current payment terms. Interest is recognized on such loans at the accrual rate subject to management's determination that accrued interest is ultimately collectible, based on the underlying collateral and operations of the borrower. If management cannot make this determination, interest income above the current pay rate is recognized only upon actual receipt.

Deferred origination fees, original issue discounts and loan origination costs, if any, are recognized as a reduction to the interest income over the terms of the related investments using the effective interest method. Fees received in connection with loan commitments are also deferred until the loan is funded and are then recognized over the term of the loan as an adjustment to yield. Discounts or premiums associated with the purchase of loans are amortized or accreted into interest income as a yield adjustment on the effective interest method based on expected cashflows through the expected maturity date of the related investment. If we purchase a preferred equity investment at a discount, intend to hold it until maturity and expect to recover the full value of the investment, we accrete the discount into income as an adjustment to yield over the term of the investment. If we purchase a preferred equity investment at a discount with the intention of foreclosing on the collateral, we do not accrete the discount. For investments acquired at a discount for credit quality, the difference between contractual cash flows and expected cash flows at acquisition is not accreted. Anticipated exit fees, the collection of which is expected, are also recognized over the term of the loan as an adjustment to yield.

Preferred equity investments are placed on a non-accrual status at the earlier of the date at which payments become 90 days past due or when, in the opinion of management, a full recovery of interest income becomes doubtful. Interest income recognition on any non-accrual preferred equity investment is resumed when such non-accrual preferred equity investment becomes contractually current and performance is demonstrated to be resumed. Interest is recorded as income on impaired loans only to the extent cash is received.

We may syndicate a portion of the loans that we originate or sell these loans individually. When a transaction meets the criteria of sale accounting, we derecognize the loan sold and recognize gain or loss based on the difference between the sales price and the carrying value of the loan sold. Any related unamortized deferred origination fees, original issue discounts, loan origination costs, discounts or premiums at the time of sale are recognized as an adjustment to the gain or loss on sale, which is included in investment income on the consolidated statements of operations. Any fees received at the time of sale or syndication are recognized as part of investment income.

Asset management fees are recognized on a straight-line basis over the term of the asset management agreement.

Reserve for Possible Credit Losses

The expense for possible credit losses in connection with preferred equity investments is the charge to earnings to increase the allowance for possible credit losses to the level that we estimate to be adequate, based on Level 3 data, considering delinquencies, loss experience and collateral quality. Other factors considered relate to geographic trends and product diversification, the size of the portfolio and current economic conditions. Based upon these factors, we establish the provision for possible credit losses on each individual investment. When it is probable that we will be unable to collect all amounts contractually due, the investment is considered impaired.

Where impairment is indicated on an investment that is held to maturity, a valuation allowance is measured based upon the excess of the recorded investment amount over the net fair value of the collateral. Any deficiency between the carrying amount of an asset and the calculated value of the collateral is charged to expense. We continue to assess or adjust our estimates based on circumstances of a loan and the underlying collateral. If the additional information obtained reflects increased recovery of our investment, we will adjust our reserves accordingly. There were no loan reserves recorded during the three and six months ended June 30, 2015 and 2014.

Income Taxes

ROP is a partnership and, as a result, all income and losses of the partnership are allocated to the partners for inclusion in their respective income tax returns. No provision has been made for income taxes in the consolidated financial statements since such taxes, if any, are the responsibility of the individual partners.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Fair Value Measurements

See Note 9, "Fair Value Measurements."

Concentrations of Credit Risk

Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash investments, preferred equity investments and accounts receivable. We place our cash investments in excess of insured amounts with high quality financial institutions. The collateral securing our preferred equity investments is located in New York City. See Note 5, "Preferred Equity and Other Investments." We perform ongoing credit evaluations of our tenants and require most tenants to provide security deposits or letters of credit. Though these security deposits and letters of credit are insufficient to meet the total value of a tenant's lease obligation, they are a measure of good faith and a source of funds to offset the economic costs associated with lost rent and the costs associated with re-tenanting a space. Although the properties in our real estate portfolio are primarily located in Manhattan, we also have properties located in Brooklyn, Westchester County, Connecticut and New Jersey. The tenants located in our buildings operate in various industries. Other than two tenants who account for 4.6% and 3.7% of our share of annualized cash rent, respectively, no other tenant in the portfolio accounted for more than 2.7% of our share of annualized cash rent, including our share of joint venture annualized cash rent, at June 30, 2015. Approximately 15.7%, 9.8%, 7.9%, 8.4%, and 7.1%, of our share of annualized cash rent was attributable to 1185 Avenue of the Americas, 625 Madison Avenue, 750 Third Avenue, 919 Third Avenue and 1350 Avenue of the Americas, respectively, for the three months ended June 30, 2015.

Reclassification

Certain prior year balances have been reclassified to conform to our current year presentation primarily in order to include the transfer of three properties in 2015 and four properties in 2014, which were transferred subsequent to June 30, 2014.

Accounting Standards Updates

In April 2015, the Financial Accounting Standards Board, or FASB, issued final guidance to simplify the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability (ASU No, 2015-03). The guidance requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. The guidance is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption of the guidance is permitted. Upon adoption, an entity must apply the new guidance retrospectively for all prior periods presented in the financial statements. The Company expects to adopt the guidance effective January 1, 2016 and the guidance is not anticipated to have a material impact on our consolidated financial statements.

In February 2015, the FASB, issued new guidance that amends the current consolidation guidance, including introducing a separate consolidation analysis specific to limited partnerships and other similar entities (ASU No. 2015-02). Under this analysis, limited partnerships and other similar entities will be considered a VIE unless the limited partners hold substantive kick-out rights or participating rights. The guidance is effective for annual and interim periods beginning after December 15, 2015. Early adoption of this guidance is permitted. The Company is currently evaluating the new guidance to determine the impact it may have on our consolidated financial statements.

In May 2014, the FASB issued a new comprehensive revenue recognition guidance which requires us to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods and services (ASU No. 2014-09). The guidance also requires enhanced disclosures to help users of financial statements better understand the nature, amount, timing, and uncertainty of revenue that is recognized. The guidance is effective for annual and interim periods beginning after December 15, 2016 and early adoption is not permitted. In July 2015, the FASB voted to defer by one year the effective date of ASU No. 2014-09 for both public and nonpublic entities and give both public and private companies the option to early adopt using the original effective date. The new guidance can be applied either retrospectively to each prior reporting period presented, or as a cumulative-effect adjustment as of the date of adoption. The Company is currently evaluating the new guidance to determine the impact it may have on our consolidated financial statements.

In April 2014, the FASB issued new guidance on reporting discontinued operations which raises the threshold for disposals to qualify as discontinued operations (ASU No. 2014-08). The guidance also allows us to have a significant continuing involvement and continuing cash flows with the discontinued operations. Additionally, the guidance requires additional disclosures for discontinued operations and new disclosures for individually material disposal transactions that do not meet the definition of a discontinued operation. The guidance is effective for calendar year public companies beginning in the first quarter of 2015 and is to be applied on a prospective basis for new disposals. Early adoption of this guidance was permitted. The Company has adopted the standard beginning in the first quarter of 2015. The adoption of this guidance changed the presentation of discontinued operations for all properties held for sale and/or disposed of subsequent to January 1, 2015.

Property Acquisition

6 Months Ended

Jun. 30, 2015

Business Combinations [Abstract]

Property Acquisition

2014 Acquisition

During the six months ended June 30, 2015, we finalized the purchase price allocation based on third party appraisal and additional facts and circumstances that existed at the acquisition dates for the following 2014 acquisitions (in thousands):



	102 Greene Street⁽¹⁾		115 Spring Street⁽¹⁾
Acquisition Date	October 2014		July 2014
Ownership Type	Fee Interest		Fee Interest
Property Type	Retail		Retail

Purchase Price Allocation:
Land	$	8,215	$	11,078
Building and building leasehold	26,717		44,799
Above-market lease value	—		—
Acquired in-place lease value	1,015		2,037
Other assets, net of other liabilities	3		—
Assets acquired	35,950		57,914
Mark-to-market assumed debt	—		—
Below-market lease value	3,701		4,789
Liabilities assumed	3,701		4,789
Purchase price	$	32,249	$	53,125
Net consideration funded by us at closing, excluding consideration financed by debt	$	32,249	$	53,125
Equity and/or debt investment held	$	—	$	—
Debt assumed	$	—	$	—

____________________________________________________________________

(1)

Based on our preliminary analysis of the purchase price, we had allocated $11.3 million and $21.0 million to land and building, respectively, at 102 Greene Street, and $15.9 million and $37.2 million to land and building, respectively, at 115 Spring Street. The impact to our consolidated statement of operations for the six months ended June 30, 2015 was $1.1 million in rental revenue for the amortization of aggregate below-market leases and $1.0 million of depreciation expense.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

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+ Details

Property Held for Sale and Property Disposition

6 Months Ended

Jun. 30, 2015

Discontinued Operations and Disposal Groups [Abstract]

Property Held for Sale and Property Disposition

Properties Held for Sale

During the second quarter of 2015, we entered into an agreement to sell an 80% interest in 131-137 Spring Street based on a gross asset valuation of $277.8 million. In August, we completed this sale.

Discontinued Operations

The Company adopted ASU 2014-08 effective January 1, 2015. As a result, the Company classified 131-137 Spring Street as held for sale as of June 30, 2015 and included the results of operations in continuing operations for all periods presented. Discontinued operations included the results of operations of real estate assets sold prior to January 1, 2015. This included 673 First Avenue, which was sold in May 2014. There were no discontinued operations for the three and six months ended June 30, 2015.

The following table summarizes net income from discontinued operations for the three and six months ended June 30, 2014 (in thousands):



	Three Months Ended June 30, 2014		Six Months Ended June 30, 2014
Revenues
Rental revenue	$	2,777	$	7,853
Escalation and reimbursement revenues	259		1,080
Total revenues	3,036		8,933
Operating expenses	280		1,164
Real estate taxes	383		1,402
Ground rent	805		3,001
Interest expense, net of interest income	220		879
Depreciation and amortization	—		433
Total expenses	1,688		6,879
Net income from discontinued operations	$	1,348	$	2,054

- Definition

The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Preferred Equity and Other Investments

6 Months Ended

Jun. 30, 2015

Investments, Debt and Equity Securities [Abstract]

Preferred Equity and Other Investments

Preferred Equity Investments

As of June 30, 2015 and December 31, 2014, we held the following preferred equity investments, with an aggregate weighted average current yield of approximately 10.18% at June 30, 2015 (in thousands):



Type	June 30, 2015 Future Funding Obligations		June 30, 2015 Senior Financing		June 30,2015 Carrying Value ⁽¹⁾		December 31, 2014 Carrying Value ⁽¹⁾		Initial Mandatory Redemption
Preferred equity⁽²⁾⁽³⁾	$	—	$	550,000	$	126,817	$	123,041	July 2015
Preferred equity⁽⁴⁾	—		70,000		9,960		9,954		March 2018
Preferred equity	5,580		60,795		32,162		—		November 2018
	$	5,580	$	680,795	$	168,939	$	132,995

____________________________________________________________________


(1)	Carrying value is net of deferred origination fees.


(2)	The difference between the pay and accrual rates is included as an addition to the principal balance outstanding.


(3)	This investment was redeemed in July 2015.


(4)	In March 2015, the redemption date was extended to March 2018.

At June 30, 2015 and December 31, 2014, all preferred equity investments were performing in accordance with the terms of the related agreements.

Other Investments

Other investments pertain to investments accounted for under the equity method of accounting.

We have one preferred equity investment which meets the criteria of a real estate investment under the guidance for Acquisition, Development and Construction arrangements and have accounted for this wholly owned investment under the equity method of accounting. As of June 30, 2015, the book value of this investment was $40.2 million, which is due to mature in March 2016, subject to three one-year extension options and a two-year option for the last extension.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References + Details

Mortgages Payable

6 Months Ended

Jun. 30, 2015

Mortgage Note and Other Loans Payable

Mortgages Payable

The first mortgages collateralized by the property and assignment of leases at June 30, 2015 and December 31, 2014, respectively, were as follows (amounts in thousands):



Property	Maturity Date	Interest Rate⁽¹⁾		June 30, 2015		December 31, 2014
						(as adjusted)
919 Third Avenue⁽²⁾	June 2023	5.12	%	$	500,000	$	500,000
711 Third Avenue⁽³⁾				—		120,000
				$	500,000	$	620,000

____________________________________________________________________


(1)	Effective weighted average interest rate for the three months ended June 30, 2015.


(2)	We own a 51.0% controlling interest in the joint venture that is the borrower on this loan.


(3)	In March 2015, we repaid the mortgage.

The gross book value of the property collateralizing the mortgages payable was $1.3 billion and $1.4 billion at June 30, 2015 and December 31, 2014, respectively.

Corporate Indebtedness

6 Months Ended

Jun. 30, 2015

Debt Disclosure [Abstract]

Corporate Indebtedness

2012 Credit Facility

In March 2014, we entered into an amendment to the $1.6 billion credit facility entered into by the Company in November 2012, or the 2012 credit facility, which among other things, increased the term loan portion of the facility by $383.0 million to $783.0 million, decreased the interest-rate margin applicable to the term loan portion of the facility by 25 basis points and extended the maturity of the term loan portion of the facility from March 30, 2018 to June 30, 2019. In November 2014, we increased the term loan portion of the facility by $50.0 million to $833.0 million. In January 2015, we entered into a second amended and restated credit agreement, which decreased the interest-rate margin and facility fee applicable to the revolving credit facility by 20 basis points and five basis points, respectively, and extended the maturity date of the revolving credit facility to March 29, 2019 with an as-of-right extension through March 29, 2020. We also have an option, subject to customary conditions, to increase the capacity under the revolving credit facility to $1.5 billion at any time prior to the maturity date for the revolving credit facility without the consent of existing lenders, by obtaining additional commitments from our existing lenders and other financial institutions. As of June 30, 2015, the 2012 credit facility, as amended, consisted of a $1.2 billion revolving credit facility, or the revolving credit facility, and an $833.0 million term loan, or the term loan facility.

As of June 30, 2015, the 2012 credit facility bore interest at a spread over LIBOR ranging from (i) 87.5 basis points to 155 basis points for loans under the revolving credit facility and (ii) 95 basis points to 190 basis points for loans under the term loan facility, in each case based on the credit rating assigned to the senior unsecured long term indebtedness of ROP. At June 30, 2015, the applicable spread was 125 basis points for revolving credit facility and 140 basis points for the term loan facility. At June 30, 2015, the effective interest rate was 1.44% for the revolving credit facility and 1.66% for the term loan facility. We are required to pay quarterly in arrears a 12.5 to 30 basis point facility fee on the total commitments under the revolving credit facility based on the credit rating assigned to the senior unsecured long term indebtedness of ROP. As of June 30, 2015, the facility fee was 25 basis points. As of June 30, 2015, we had $89.4 million of outstanding letters of credit, $705.0 million drawn under the revolving credit facility and $833.0 million outstanding under the term loan facility, with total undrawn capacity of $405.6 million under the 2012 credit facility.

We, SL Green and the Operating Partnership are all borrowers jointly and severally obligated under the 2012 credit facility. None of SL Green's other subsidiaries are obligors under the 2012 credit facility.

The 2012 credit facility includes certain restrictions and covenants (see Restrictive Covenants below).

Senior Unsecured Notes

The following table sets forth our senior unsecured notes and other related disclosures as of June 30, 2015 and December 31, 2014, respectively, by scheduled maturity date (dollars in thousands):



Issuance	June 30, 2015 Unpaid Principal Balance		June 30, 2015 Accreted Balance		December 31, 2014 Accreted Balance		Coupon Rate⁽¹⁾		Effective Rate		Term (in Years)	Maturity Date
March 31, 2006	$	255,308	$	255,272	$	255,250	6.00	%	6.00	%	10	March 31, 2016
August 5, 2011⁽²⁾	250,000		249,777		249,744		5.00	%	5.00	%	7	August 15, 2018
March 16, 2010⁽²⁾	250,000		250,000		250,000		7.75	%	7.75	%	10	March 15, 2020
November 15, 2012⁽²⁾	200,000		200,000		200,000		4.50	%	4.50	%	10	December 1, 2022
June 27, 2005⁽³⁾	—		—		7
	$	955,308	$	955,049	$	955,001

______________________________________________________________________


(1)	Interest on the senior unsecured notes is payable semi-annually with principal and unpaid interest due on the scheduled maturity dates.


(2)	Issued by SL Green, the Operating Partnership and ROP, as co-obligors.


(3)	In April 2015, we redeemed the outstanding exchangeable senior debentures.

ROP also provides a guaranty of the Operating Partnership's obligations under its 3.00% Exchangeable Senior Notes due 2017.

Restrictive Covenants

The terms of the 2012 credit facility, as amended, and certain of our senior unsecured notes include certain restrictions and covenants which may limit, among other things, SL Green's ability to pay dividends, make certain types of investments, incur additional indebtedness, incur liens and enter into negative pledge agreements and dispose of assets, and which require compliance with financial ratios relating to the maximum ratio of total indebtedness to total asset value, a minimum ratio of EBITDA to fixed charges, a maximum ratio of secured indebtedness to total asset value and a maximum ratio of unsecured indebtedness to unencumbered asset value. The dividend restriction referred to above provides that SL Green will not during any time when a default is continuing, make distributions with respect to SL Green's common stock or other equity interests, except to enable SL Green to continue to qualify as a REIT for Federal income tax purposes. As of June 30, 2015, we were in compliance with all such covenants.

Principal Maturities

Combined aggregate principal maturities of our mortgage, 2012 credit facility and senior unsecured notes as of June 30, 2015, including as-of-right extension options and put options, were as follows (in thousands):



	Scheduled Amortization		Principal Repayments		Revolving Credit Facility		Unsecured Term Loan		Senior Unsecured Notes		Total
Remaining 2015	$	—	$	—	$	—	$	—	$	—	$	—
2016	3,566		—		—		—		255,308		258,874
2017	7,411		—		—		—		—		7,411
2018	7,799		—		—		—		250,000		257,799
2019	8,207		—		—		833,000		—		841,207
Thereafter	31,423		441,594		705,000		—		450,000		1,628,017
	$	58,406	$	441,594	$	705,000	$	833,000	$	955,308	$	2,993,308

Consolidated interest expense, excluding capitalized interest, was comprised of the following (in thousands):



	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
				(as adjusted)						(as adjusted)
Interest expense	$	27,654		$	31,631		$	55,390		$	63,436
Interest income	(5		)	(6		)	(12		)	(11		)
Interest expense, net	$	27,649		$	31,625		$	55,378		$	63,425
Interest capitalized	$	321		$	954		$	1,107		$	1,898

Partners' Capital	6 Months Ended
Partners' Capital	Jun. 30, 2015
Partners' Capital Notes [Abstract]
Partners' Capital	Partners' Capital Since consummation of the Merger on January 25, 2007, the Operating Partnership has owned all the economic interests in ROP either by direct ownership or by indirect ownership through our general partner, which is its wholly-owned subsidiary. Intercompany transactions between SL Green and ROP are generally recorded as contributions and distributions.

Fair Value Measurements

6 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurements

We are required to disclose fair value information with regard to our financial instruments, whether or not recognized in the consolidated balance sheets, for which it is practical to estimate fair value. The FASB guidance defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. We measure and/or disclose the estimated fair value of financial assets and liabilities based on a hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity and the reporting entity’s own assumptions about market participant assumptions. This hierarchy consist of three broad levels: Level 1 - quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity can access at the measurement date; Level 2 - inputs other than quoted prices included within Level 1, that are observable for the asset or liability, either directly or indirectly; and Level 3 - unobservable inputs for the asset or liability that are used when little or no market data is available. We follow this hierarchy for our assets and liabilities measured at fair value on a recurring and nonrecurring basis. In instances in which the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level of input that is significant to the fair value measurement in its entirety. Our assessment of the significance of the particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability.

The fair value of derivative instruments is based on current market data received from financial sources that trade such instruments and are based on prevailing market data and derived from third party proprietary models based on well-recognized financial principles and reasonable estimates about relevant future market conditions, which are classified as Level 2 inputs.

The financial assets and liabilities that are not measured at fair value on our consolidated balance sheets include cash and cash equivalents, restricted cash, accounts receivable, accounts payable and accrued expenses, preferred equity investments, mortgages and other loans payable and other secured and unsecured debt. The carrying amount of cash and cash equivalents, restricted cash, accounts receivable, and accounts payable and accrued expenses reported in our consolidated balance sheets approximates fair value due to the short term nature of these instruments. The fair value of preferred equity investments, which is classified as Level 3, is estimated by discounting the future cash flows using current interest rates at which similar loans with the same maturities would be made to borrowers with similar credit ratings. The fair value of borrowings, which is classified as Level 3, is estimated by discounting the contractual cash flows of each debt instrument to their present value using adjusted market interest rates, which is provided by a third-party specialist.

The following table provides the carrying value and fair value of these financial instruments as of June 30, 2015 and December 31, 2014 (in thousands):



	June 30, 2015					December 31, 2014
	Carrying Value			Fair Value		Carrying Value			Fair Value
						(as adjusted)			(as adjusted)
Preferred equity investments	$	168,939	⁽¹⁾	(2)		$	132,995	⁽¹⁾	(2)

Fixed rate debt	$	1,485,049		$	1,614,431	$	1,605,001		$	1,737,673
Variable rate debt	1,508,000			1,570,857		1,188,000			1,230,470
	$	2,993,049		$	3,185,288	$	2,793,001		$	2,968,143

______________________________________________________________________


(1)	Excludes one investment with a book value of $40.2 million as of June 30, 2015 and December 31, 2014, which we accounted for under the equity method accounting as a result of meeting the criteria of a real estate investment under the guidance for Acquisition, Development and Construction arrangements.


(2)	At June 30, 2015, preferred equity investments had an estimated fair value ranging between $185.8 million and $211.2 million. At December 31, 2014, preferred equity investments had an estimated fair value ranging between $146.3 million and $166.2 million.

Disclosure about fair value of financial instruments was based on pertinent information available to us as of June 30, 2015 and December 31, 2014. Although we are not aware of any factors that would significantly affect the reasonable fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since that date and current estimates of fair value may differ significantly from the amounts presented herein.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Financial Instruments: Derivatives and Hedging

6 Months Ended

Jun. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Financial Instruments: Derivatives and Hedging

In the normal course of business, we use a variety of commonly used derivative instruments, such as interest rate swaps, caps, collar and floors, to manage, or hedge interest rate risk. We hedge our exposure to variability in future cash flows for forecasted transactions in addition to anticipated future interest payments on existing debt. We recognize all derivatives on the balance sheets at fair value. Derivatives that are not hedges are adjusted to fair value through earnings. If a derivative is a hedge, depending on the nature of the hedge, changes in the fair value of the derivative will either be offset against the change in fair value of the hedge asset, liability, or firm commitment through earnings, or recognized in other comprehensive income until the hedged item is recognized in earnings. The ineffective portion of a derivative's change in fair value will be immediately recognized in earnings. Reported net income and capital may increase or decrease prospectively, depending on future levels of interest rates and other variables affecting the fair values of derivative instruments and hedged items, but will have no effect on cash flows. Currently, all of our designated derivative instruments are effective hedging instruments.

As of June 30, 2015, the Company had designated an interest swap agreement on $30.0 million of the 2012 credit facility. The following table summarizes the notional and fair value of our derivative financial instrument at June 30, 2015 based on Level 2 inputs. The notional value is an indication of the extent of our involvement in that instrument at that time, but does not represent exposure to credit, interest rate or market risks.



	Notional Value		Strike Rate		Effective Date	Expiration Date	Balance Sheet Location	Fair Value
Interest Rate Swap	$	30,000	2.295	%	July 2010	June 2016	Other Liabilities	$	(548	)

Gains and losses on terminated hedges are included in the accumulated other comprehensive loss, and are recognized into earnings over the term of the related senior unsecured notes. As of June 30, 2015 and December 31, 2014, the deferred net losses from these terminated hedges, which are included in accumulated other comprehensive loss relating to net unrealized loss on derivative instrument, was approximately $2.2 million and $2.3 million, respectively.

Over time, the realized and unrealized gains and losses held in accumulated other comprehensive loss will be reclassified into earnings as an adjustment to interest expense in the same periods in which the hedged interest payments affect earnings. We estimate that approximately $0.9 million of the current balance held in accumulated other comprehensive loss will be reclassified into interest expense within the next 12 months.

The following table presents the effect of our derivative financial instrument that is designated and qualifies as a hedging instrument on the consolidated statements of operations for the three months ended June 30, 2015 and 2014, respectively (in thousands):



	Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)						Location of Loss Reclassified from Accumulated Other Comprehensive Loss into Income	Amount of Gain Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion)				Location of Gain Recognized in Income on Derivative	Amount of Gain Recognized into Income (Ineffective Portion)
	Three Months Ended June 30,							Three Months Ended June 30,					Three Months Ended June 30,
Derivative	2015			2014				2015		2014			2015		2014
Interest Rate Swap	$	(27	)	$	(66	)	Interest expense	$	250	$	245	Interest expense	$	1	$	1

The following table presents the effect of our derivative financial instrument that is designated and qualifies as a hedging instrument on the consolidated statements of operations for the six months ended June 30, 2015 and 2014, respectively (in thousands):



	Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)						Location of Loss Reclassified from Accumulated Other Comprehensive Loss into Income	Amount of Gain Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion)				Location of Gain Recognized in Income on Derivative	Amount of Gain Recognized into Income (Ineffective Portion)
	Six Months Ended June 30,							Six Months Ended June 30,					Six Months Ended June 30,
Derivative	2015			2014				2015		2014			2015		2014
Interest Rate Swap	$	(95	)	$	(110	)	Interest expense	$	499	$	487	Interest expense	$	2	$	2

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

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+ Details

Related Party Transactions	6 Months Ended
Related Party Transactions	Jun. 30, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Cleaning/ Security/ Messenger and Restoration Services Through Alliance Building Services, or Alliance, First Quality Maintenance, L.P., or First Quality, provides cleaning, extermination and related services, Classic Security LLC provides security services, Bright Star Couriers LLC provides messenger services, and Onyx Restoration Works provides restoration services with respect to certain properties owned by us. Alliance is partially owned by Gary Green, a son of Stephen L. Green, the chairman of SL Green's board of directors. In addition, First Quality has the non-exclusive opportunity to provide cleaning and related services to individual tenants at our properties on a basis separately negotiated with any tenant seeking such additional services. An affiliate of ours has entered into an arrangement with Alliance whereby it will receive a profit participation above a certain threshold for services provided by Alliance to certain tenants at certain buildings above the base services specified in their lease agreements. Income earned from profit participation, which is included in other income on the consolidated statements of operations, was $0.8 million, $1.7 million, $0.8 million and $1.6 million for the three and six months ended June 30, 2015 and 2014. We also recorded expenses of $2.1 million, $4.0 million, $2.1 million and $3.6 million for the three and six months ended June 30, 2015 and 2014, respectively, for these services (excluding services provided directly to tenants). Allocated Expenses from SL Green Property operating expenses include an allocation of salary and other operating costs from SL Green based on square footage of the related properties. Such amount was approximately $2.5 million, $4.9 million, $2.3 million and $4.6 million for the three and six months ended June 30, 2015 and 2014, respectively. Insurance We obtain insurance coverage through an insurance program administered by SL Green. In connection with this program, we incurred insurance expense of approximately $1.7 million, $3.3 million, $1.6 million and $3.2 million for the three and six months ended June 30, 2015 and 2014.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References + Details

Commitments and Contingencies

6 Months Ended

Jun. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Legal Proceedings

As of June 30, 2015, we were not involved in any material litigation nor, to management's knowledge, was any material litigation threatened against us or our portfolio which if adversely determined could have a material adverse impact on us other than routine litigation arising in the ordinary course of business or litigation that is adequately covered by insurance.

Environmental Matters

Our management believes that the properties are in compliance in all material respects with applicable Federal, state and local ordinances and regulations regarding environmental issues. Management is not aware of any environmental liability that it believes would have a materially adverse impact on our financial position, results of operations or cash flows. Management is unaware of any instances in which it would incur significant environmental cost if any of our properties were sold.

Ground Leases Arrangements

The following is a schedule of future minimum lease payments under non-cancellable operating leases with initial terms in excess of one year as of June 30, 2015 (in thousands):



	Non-cancellable operating leases
Remaining 2015	$	10,168
2016	20,440
2017	20,586
2018	20,586
2019	20,586
Thereafter	348,672
Total minimum lease payments	$	441,038

Segment Information

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Segment Information

We are engaged in acquiring, owning, managing and leasing commercial properties in Manhattan, Brooklyn, Westchester County, Connecticut and New Jersey and have two reportable segments, real estate and preferred equity investments. We evaluate real estate performance and allocate resources based on earnings contribution to income from continuing operations.

The primary sources of revenue are generated from tenant rents and escalations and reimbursement revenue. Real estate property operating expenses consist primarily of security, maintenance, utility costs, real estate taxes and ground rent expense (at certain applicable properties). See Note 5, "Preferred Equity and Other Investments," for additional details on our preferred equity investments.

Selected results of operations for the three and six months ended June 30, 2015 and 2014, and selected asset information as of June 30, 2015 and December 31, 2014, regarding our operating segments are as follows (in thousands):



	Real Estate Segment		Preferred Equity Segment		Total Company
Total revenues:
Three months ended:
June 30, 2015	$	188,624	$	4,268	$	192,892
June 30, 2014, as adjusted	164,618		8,777		173,395
Six months ended:
June 30, 2015	$	361,609	$	7,871	$	369,480
June 30, 2014, as adjusted	327,371		18,052		345,423



	Real Estate Segment		Preferred Equity Segment		Total Company
Income from continuing operations:
Three months ended:
June 30, 2015	$	31,208	$	4,374	$	35,582
June 30, 2014, as adjusted	7,666		8,216		15,882
Six months ended:
June 30, 2015	$	43,483	$	8,084	$	51,567
June 30, 2014, as adjusted	13,347		15,686		29,033
Total assets
As of:
June 30, 2015	$	6,574,369	$	209,437	$	6,783,806
December 31, 2014, as adjusted	6,607,809		173,300		6,781,109

Income from continuing operations represents total revenues less total expenses for the real estate segment and total investment income and equity in net income from unconsolidated joint venture less allocated interest expense and provision for loan losses for the preferred equity segment. Interest costs for the preferred equity segment are imputed assuming the portfolio is 100% leveraged by our 2012 revolving credit facility borrowing cost. We also allocate loan loss reserves, net of recoveries and transaction related costs to the preferred equity segment. We do not allocate marketing, general and administrative expenses to the preferred equity segment, since we base performance on the individual segments prior to allocating marketing, general and administrative expenses. All other expenses, except interest, relate entirely to the real estate assets. There were no transactions between the above two segments.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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+ Details

Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In July, the Company expanded its unsecured corporate credit facility by $500.0 million to $2.533 billion. The revolving line of credit portion of the facility, which matures in March 2020, was increased by $400.0 million to $1.6 billion and the term loan portion of the facility, which matures in June 2019, was increased by $100.0 million to $933.0 million. In August, the Operating Partnership transferred an entity that held debt investments and financing receivables with an aggregate carrying value as of June 30, 2015 of $1.7 billion to ROP.

Significant Accounting Policies (Policies)	6 Months Ended
Significant Accounting Policies (Policies)	Jun. 30, 2015
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include our accounts and those of our subsidiaries, which are wholly-owned or controlled by us. Entities which we do not control through our voting interest and entities which are variable interest entities, but where we are not the primary beneficiary, are accounted for under the equity method or as preferred equity investments. See Note 5, "Preferred Equity and Other Investments." ROP's investments in majority-owned and controlled real estate joint ventures are reflected in the financial statements on a consolidated basis with a reduction for the noncontrolling partners' interests. All significant intercompany balances and transactions have been eliminated. We consolidate a variable interest entity, or VIE, in which we are considered the primary beneficiary. The primary beneficiary is the entity that has (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could be significant to the VIE. A noncontrolling interest in a consolidated subsidiary is defined as the portion of the equity (net assets) in a subsidiary not attributable, directly or indirectly, to us. Noncontrolling interests are required to be presented as a separate component of capital in the consolidated balance sheet and the presentation of net income is modified to present earnings and other comprehensive income attributed to controlling and noncontrolling interests. We assess the accounting treatment for each joint venture and preferred equity investment. This assessment includes a review of each joint venture or limited liability company agreement to determine which party has what rights and whether those rights are protective or participating. For all VIEs, we review such agreements in order to determine which party has the power to direct the activities that most significantly impact the entity's economic performance. In situations where we and our partner approve, among other things, the annual budget, receive a detailed monthly reporting package from us, meet on a quarterly basis to review the results of the joint venture, review and approve the joint venture's tax return before filing, and approve all leases that cover more than a nominal amount of space relative to the total rentable space at each property, we do not consolidate the joint venture as we consider these to be substantive participation rights that result in shared power of the activities that most significantly impact the performance of the joint venture. Our joint venture agreements typically contain certain protective rights such as the requirement of partner approval to sell, finance or refinance the property and the payment of capital expenditures and operating expenditures outside of the approved budget or operating plan.
Investment in Commercial Real Estate Properties	Investment in Commercial Real Estate Properties On a periodic basis, we assess whether there are any indications that the value of our real estate properties may be other than temporarily impaired or that their carrying value may not be recoverable. A property's value is considered impaired if management's estimate of the aggregate future cash flows (undiscounted and without interest charges for consolidated properties) to be generated by the property is less than the carrying value of the property. To the extent impairment has occurred, the loss will be measured as the excess of the carrying amount of the property over the calculated fair value of the property. We also evaluate our real estate properties for potential impairment when a real estate property has been classified as held for sale. Real estate assets held for sale are valued at the lower of their carrying value or fair value less costs to sell. We do not believe that the values of any of our consolidated properties were other than temporarily impaired at June 30, 2015. We allocate the purchase price of real estate to land and building (inclusive of tenant improvements) and, if determined to be material, intangibles, such as the value of the above- and below-market leases and origination costs associated with the in-place leases. We depreciate the amount allocated to building (inclusive of tenant improvements) over their estimated useful lives, which generally range from three to 40 years. We amortize the amount allocated to the above- and below-market leases over the remaining term of the associated lease, which generally range from one to 14 years, and record it as either an increase (in the case of below-market leases) or a decrease (in the case of above-market leases) to rental income. We amortize the amount allocated to the values associated with in-place leases over the expected term of the associated lease, which generally ranges from one to 14 years. If a tenant vacates its space prior to the contractual termination of the lease and no rental payments are being made on the lease, any unamortized balance of the related intangible will be written off. The tenant improvements and origination costs are amortized as an expense over the remaining life of the lease (or charged against earnings if the lease is terminated prior to its contractual expiration date). We assess fair value of the leases based on estimated cash flow projections that utilize appropriate discount and capitalization rates and available market information. Estimates of future cash flows are based on a number of factors including the historical operating results, known trends, and market/economic conditions that may affect the property. To the extent acquired leases contain fixed rate renewal options that are below-market and determined to be material, we amortize such below-market lease value into rental income over the renewal period.
Investment in Unconsolidated Joint Ventures	Investment in Unconsolidated Joint Ventures We may originate loans for real estate acquisition, development and construction, where we expect to receive some or all of the residual profit from such projects. When the risk and rewards of these arrangements are essentially the same as an investor or joint venture partner, we account for these arrangements as real estate investments under the equity method of accounting for investments. Otherwise, we account for these arrangements consistent with our loan accounting for our preferred equity investments.
Revenue Recognition	Revenue Recognition Rental revenue is recognized on a straight-line basis over the term of the lease. Rental revenue recognition commences when the tenant takes possession or controls the physical use of the leased space. In order for the tenant to take possession, the leased space must be substantially ready for its intended use. To determine whether the leased space is substantially ready for its intended use, management evaluates whether we are or the tenant is the owner of tenant improvements for accounting purposes. When management concludes that we are the owner of tenant improvements, rental revenue recognition begins when the tenant takes possession of the finished space, which is when such tenant improvements are substantially complete. In certain instances, when management concludes that we are not the owner (the tenant is the owner) of tenant improvements, rental revenue recognition begins when the tenant takes possession of or controls the space. When management concludes that we are the owner of tenant improvements for accounting purposes, we record amounts funded to construct the tenant improvements as a capital asset. For these tenant improvements, we record amounts reimbursed by tenants as a reduction of the capital asset. When management concludes that the tenant is the owner of tenant improvements for accounting purposes, we record our contribution towards those improvements as a lease incentive, which is included in deferred costs, net on our consolidated balance sheets and amortized as a reduction to rental revenue on a straight-line basis over the term of the lease. The excess of rents recognized over amounts contractually due pursuant to the underlying leases are included in deferred rents receivable on the consolidated balance sheets. We establish, on a current basis, an allowance for future potential tenant credit losses, which may occur against this account. The balance reflected on the consolidated balance sheets is net of such allowance. In addition to base rent, our tenants also generally will pay their pro rata share of increases in real estate taxes and operating expenses for the building over a base year. In some leases, in lieu of paying additional rent based upon increases in building operating expenses, the tenant will pay additional rent based upon increases in the wage rate paid to porters over the porters' wage rate in effect during a base year or increases in the consumer price index over the index value in effect during a base year. In addition, many of our leases contain fixed percentage increases over the base rent to cover escalations. Electricity is most often supplied by the landlord either on a sub-metered basis, or rent inclusion basis (i.e., a fixed fee is included in the rent for electricity, which amount may increase based upon increases in electricity rates or increases in electrical usage by the tenant). Base building services other than electricity (such as heat, air conditioning and freight elevator service during business hours, and base building cleaning) are typically provided at no additional cost, with the tenant paying additional rent only for services which exceed base building services or for services which are provided outside normal business hours. These escalations are based on actual expenses incurred in the prior calendar year. If the expenses in the current year are different from those in the prior year, then during the current year, the escalations will be adjusted to reflect the actual expenses for the current year. We record a gain on sale of real estate when title is conveyed to the buyer, subject to the buyer's financial commitment being sufficient to provide economic substance to the sale and we have no substantial economic involvement with the buyer. Interest income on preferred equity investments is accrued based on the outstanding principal amount and contractual terms of the instruments and when, in the opinion of management, it is deemed collectible. Several of the preferred equity investments provide for accrual of interest at specified rates, which differ from current payment terms. Interest is recognized on such loans at the accrual rate subject to management's determination that accrued interest is ultimately collectible, based on the underlying collateral and operations of the borrower. If management cannot make this determination, interest income above the current pay rate is recognized only upon actual receipt. Deferred origination fees, original issue discounts and loan origination costs, if any, are recognized as a reduction to the interest income over the terms of the related investments using the effective interest method. Fees received in connection with loan commitments are also deferred until the loan is funded and are then recognized over the term of the loan as an adjustment to yield. Discounts or premiums associated with the purchase of loans are amortized or accreted into interest income as a yield adjustment on the effective interest method based on expected cashflows through the expected maturity date of the related investment. If we purchase a preferred equity investment at a discount, intend to hold it until maturity and expect to recover the full value of the investment, we accrete the discount into income as an adjustment to yield over the term of the investment. If we purchase a preferred equity investment at a discount with the intention of foreclosing on the collateral, we do not accrete the discount. For investments acquired at a discount for credit quality, the difference between contractual cash flows and expected cash flows at acquisition is not accreted. Anticipated exit fees, the collection of which is expected, are also recognized over the term of the loan as an adjustment to yield. Preferred equity investments are placed on a non-accrual status at the earlier of the date at which payments become 90 days past due or when, in the opinion of management, a full recovery of interest income becomes doubtful. Interest income recognition on any non-accrual preferred equity investment is resumed when such non-accrual preferred equity investment becomes contractually current and performance is demonstrated to be resumed. Interest is recorded as income on impaired loans only to the extent cash is received. We may syndicate a portion of the loans that we originate or sell these loans individually. When a transaction meets the criteria of sale accounting, we derecognize the loan sold and recognize gain or loss based on the difference between the sales price and the carrying value of the loan sold. Any related unamortized deferred origination fees, original issue discounts, loan origination costs, discounts or premiums at the time of sale are recognized as an adjustment to the gain or loss on sale, which is included in investment income on the consolidated statements of operations. Any fees received at the time of sale or syndication are recognized as part of investment income. Asset management fees are recognized on a straight-line basis over the term of the asset management agreement.
Reserve for Possible Credit Losses	Reserve for Possible Credit Losses The expense for possible credit losses in connection with preferred equity investments is the charge to earnings to increase the allowance for possible credit losses to the level that we estimate to be adequate, based on Level 3 data, considering delinquencies, loss experience and collateral quality. Other factors considered relate to geographic trends and product diversification, the size of the portfolio and current economic conditions. Based upon these factors, we establish the provision for possible credit losses on each individual investment. When it is probable that we will be unable to collect all amounts contractually due, the investment is considered impaired. Where impairment is indicated on an investment that is held to maturity, a valuation allowance is measured based upon the excess of the recorded investment amount over the net fair value of the collateral. Any deficiency between the carrying amount of an asset and the calculated value of the collateral is charged to expense. We continue to assess or adjust our estimates based on circumstances of a loan and the underlying collateral. If the additional information obtained reflects increased recovery of our investment, we will adjust our reserves accordingly.
Income Taxes	Income Taxes ROP is a partnership and, as a result, all income and losses of the partnership are allocated to the partners for inclusion in their respective income tax returns. No provision has been made for income taxes in the consolidated financial statements since such taxes, if any, are the responsibility of the individual partners.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Fair Value Measurements	Fair Value Measurements We are required to disclose fair value information with regard to our financial instruments, whether or not recognized in the consolidated balance sheets, for which it is practical to estimate fair value. The FASB guidance defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. We measure and/or disclose the estimated fair value of financial assets and liabilities based on a hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity and the reporting entity’s own assumptions about market participant assumptions. This hierarchy consist of three broad levels: Level 1 - quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity can access at the measurement date; Level 2 - inputs other than quoted prices included within Level 1, that are observable for the asset or liability, either directly or indirectly; and Level 3 - unobservable inputs for the asset or liability that are used when little or no market data is available. We follow this hierarchy for our assets and liabilities measured at fair value on a recurring and nonrecurring basis. In instances in which the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy within which the entire fair value measurement falls is based on the lowest level of input that is significant to the fair value measurement in its entirety. Our assessment of the significance of the particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the asset or liability. The fair value of derivative instruments is based on current market data received from financial sources that trade such instruments and are based on prevailing market data and derived from third party proprietary models based on well-recognized financial principles and reasonable estimates about relevant future market conditions, which are classified as Level 2 inputs. The financial assets and liabilities that are not measured at fair value on our consolidated balance sheets include cash and cash equivalents, restricted cash, accounts receivable, accounts payable and accrued expenses, preferred equity investments, mortgages and other loans payable and other secured and unsecured debt. The carrying amount of cash and cash equivalents, restricted cash, accounts receivable, and accounts payable and accrued expenses reported in our consolidated balance sheets approximates fair value due to the short term nature of these instruments. The fair value of preferred equity investments, which is classified as Level 3, is estimated by discounting the future cash flows using current interest rates at which similar loans with the same maturities would be made to borrowers with similar credit ratings. The fair value of borrowings, which is classified as Level 3, is estimated by discounting the contractual cash flows of each debt instrument to their present value using adjusted market interest rates, which is provided by a third-party specialist.
Concentrations of Credit Risk	Concentrations of Credit Risk Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash investments, preferred equity investments and accounts receivable. We place our cash investments in excess of insured amounts with high quality financial institutions. The collateral securing our preferred equity investments is located in New York City. See Note 5, "Preferred Equity and Other Investments." We perform ongoing credit evaluations of our tenants and require most tenants to provide security deposits or letters of credit. Though these security deposits and letters of credit are insufficient to meet the total value of a tenant's lease obligation, they are a measure of good faith and a source of funds to offset the economic costs associated with lost rent and the costs associated with re-tenanting a space. Although the properties in our real estate portfolio are primarily located in Manhattan, we also have properties located in Brooklyn, Westchester County, Connecticut and New Jersey. The tenants located in our buildings operate in various industries.
Reclassification	Reclassification Certain prior year balances have been reclassified to conform to our current year presentation primarily in order to include the transfer of three properties in 2015 and four properties in 2014, which were transferred subsequent to June 30, 2014.
Accounting Standards Updates	Accounting Standards Updates In April 2015, the Financial Accounting Standards Board, or FASB, issued final guidance to simplify the presentation of debt issuance costs by requiring debt issuance costs to be presented as a deduction from the corresponding debt liability (ASU No, 2015-03). The guidance requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. The guidance is effective for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption of the guidance is permitted. Upon adoption, an entity must apply the new guidance retrospectively for all prior periods presented in the financial statements. The Company expects to adopt the guidance effective January 1, 2016 and the guidance is not anticipated to have a material impact on our consolidated financial statements. In February 2015, the FASB, issued new guidance that amends the current consolidation guidance, including introducing a separate consolidation analysis specific to limited partnerships and other similar entities (ASU No. 2015-02). Under this analysis, limited partnerships and other similar entities will be considered a VIE unless the limited partners hold substantive kick-out rights or participating rights. The guidance is effective for annual and interim periods beginning after December 15, 2015. Early adoption of this guidance is permitted. The Company is currently evaluating the new guidance to determine the impact it may have on our consolidated financial statements. In May 2014, the FASB issued a new comprehensive revenue recognition guidance which requires us to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods and services (ASU No. 2014-09). The guidance also requires enhanced disclosures to help users of financial statements better understand the nature, amount, timing, and uncertainty of revenue that is recognized. The guidance is effective for annual and interim periods beginning after December 15, 2016 and early adoption is not permitted. In July 2015, the FASB voted to defer by one year the effective date of ASU No. 2014-09 for both public and nonpublic entities and give both public and private companies the option to early adopt using the original effective date. The new guidance can be applied either retrospectively to each prior reporting period presented, or as a cumulative-effect adjustment as of the date of adoption. The Company is currently evaluating the new guidance to determine the impact it may have on our consolidated financial statements. In April 2014, the FASB issued new guidance on reporting discontinued operations which raises the threshold for disposals to qualify as discontinued operations (ASU No. 2014-08). The guidance also allows us to have a significant continuing involvement and continuing cash flows with the discontinued operations. Additionally, the guidance requires additional disclosures for discontinued operations and new disclosures for individually material disposal transactions that do not meet the definition of a discontinued operation. The guidance is effective for calendar year public companies beginning in the first quarter of 2015 and is to be applied on a prospective basis for new disposals. Early adoption of this guidance was permitted. The Company has adopted the standard beginning in the first quarter of 2015. The adoption of this guidance changed the presentation of discontinued operations for all properties held for sale and/or disposed of subsequent to January 1, 2015.

Organization and Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of commercial office properties

Our investments in the New York Metropolitan area also include investments in Brooklyn, Westchester County, Connecticut and New Jersey, which are collectively known as the Suburban properties:



Location	Type	Number of Properties	Approximate Square Feet	Weighted Average Occupancy⁽¹⁾
Commercial:
Manhattan	Office	15	8,239,645	95.5	%
	Retail⁽²⁾⁽³⁾	5	352,892	98.8	%
	Fee Interest	2	197,654	100.0	%
		22	8,790,191	95.7	%
Suburban	Office	20	3,417,900	82.3	%
	Retail	1	52,000	100.0	%
		21	3,469,900	82.5	%
Total commercial properties		43	12,260,091	92.0	%
Residential:
Manhattan	Residential⁽²⁾	—	222,855	96.4	%
Total portfolio		43	12,482,946	92.0	%

____________________________________________________________________


(1)	The weighted average occupancy for commercial properties represents the total leased square feet divided by total available rentable square feet. The weighted average occupancy for residential properties represents the total occupied units divided by total available units.


(2)	As of June 30, 2015, we owned a building that was comprised of approximately 270,132 square feet of retail space and approximately 222,855 square feet of residential space. For the purpose of this report, we have included the building in the retail properties count and have bifurcated the square footage into the retail and residential components.


(3)	Includes two retail properties held for sale as of June 30, 2015.

Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2015

Accounting Policies [Abstract]

Summary of identified intangible assets (acquired above-market leases and in-place leases) and intangible liabilities (acquired below-market leases)



	June 30, 2015			December 31, 2014
Identified intangible assets (included in other assets):
Gross amount	$	289,180		$	293,354
Accumulated amortization	(221,273		)	(212,957		)
Net	$	67,907		$	80,397
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	434,723		$	443,520
Accumulated amortization	(324,960		)	(315,889		)
Net	$	109,763		$	127,631

____________________________________________________________________


(1)	As of June 30, 2015, $1.8 million and $5.8 million of net intangible assets and net intangible liabilities, respectively, were reclassed to assets held for sale and liabilities related to assets held for sale

Property Acquisition (Tables)

6 Months Ended

Jun. 30, 2015

2014 Acquisitions

Business Acquisition [Line Items]

Schedule of recognized identified assets acquired and liabilities assumed



	102 Greene Street⁽¹⁾		115 Spring Street⁽¹⁾
Acquisition Date	October 2014		July 2014
Ownership Type	Fee Interest		Fee Interest
Property Type	Retail		Retail

Purchase Price Allocation:
Land	$	8,215	$	11,078
Building and building leasehold	26,717		44,799
Above-market lease value	—		—
Acquired in-place lease value	1,015		2,037
Other assets, net of other liabilities	3		—
Assets acquired	35,950		57,914
Mark-to-market assumed debt	—		—
Below-market lease value	3,701		4,789
Liabilities assumed	3,701		4,789
Purchase price	$	32,249	$	53,125
Net consideration funded by us at closing, excluding consideration financed by debt	$	32,249	$	53,125
Equity and/or debt investment held	$	—	$	—
Debt assumed	$	—	$	—

____________________________________________________________________

(1)

Property Held for Sale and Property Disposition (Tables)

6 Months Ended

Jun. 30, 2015

Discontinued Operations and Disposal Groups [Abstract]

Schedule of properties sold and income from discontinued operations

The following table summarizes net income from discontinued operations for the three and six months ended June 30, 2014 (in thousands):



	Three Months Ended June 30, 2014		Six Months Ended June 30, 2014
Revenues
Rental revenue	$	2,777	$	7,853
Escalation and reimbursement revenues	259		1,080
Total revenues	3,036		8,933
Operating expenses	280		1,164
Real estate taxes	383		1,402
Ground rent	805		3,001
Interest expense, net of interest income	220		879
Depreciation and amortization	—		433
Total expenses	1,688		6,879
Net income from discontinued operations	$	1,348	$	2,054

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

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+ Details

Preferred Equity and Other Investments (Tables)

6 Months Ended

Jun. 30, 2015

Investments, Debt and Equity Securities [Abstract]

Schedule of preferred equity investments



Type	June 30, 2015 Future Funding Obligations		June 30, 2015 Senior Financing		June 30,2015 Carrying Value ⁽¹⁾		December 31, 2014 Carrying Value ⁽¹⁾		Initial Mandatory Redemption
Preferred equity⁽²⁾⁽³⁾	$	—	$	550,000	$	126,817	$	123,041	July 2015
Preferred equity⁽⁴⁾	—		70,000		9,960		9,954		March 2018
Preferred equity	5,580		60,795		32,162		—		November 2018
	$	5,580	$	680,795	$	168,939	$	132,995

____________________________________________________________________


(1)	Carrying value is net of deferred origination fees.


(2)	The difference between the pay and accrual rates is included as an addition to the principal balance outstanding.


(3)	This investment was redeemed in July 2015.


(4)	In March 2015, the redemption date was extended to March 2018.

Mortgages Payable (Tables)

6 Months Ended

Jun. 30, 2015

Mortgage Note and Other Loans Payable

Schedule of the first mortgage note and other loans payable collateralized by the property, assignment of leases and investment

The first mortgages collateralized by the property and assignment of leases at June 30, 2015 and December 31, 2014, respectively, were as follows (amounts in thousands):



Property	Maturity Date	Interest Rate⁽¹⁾		June 30, 2015		December 31, 2014
						(as adjusted)
919 Third Avenue⁽²⁾	June 2023	5.12	%	$	500,000	$	500,000
711 Third Avenue⁽³⁾				—		120,000
				$	500,000	$	620,000

____________________________________________________________________


(1)	Effective weighted average interest rate for the three months ended June 30, 2015.


(2)	We own a 51.0% controlling interest in the joint venture that is the borrower on this loan.


(3)	In March 2015, we repaid the mortgage.

Corporate Indebtedness (Tables)

6 Months Ended

Jun. 30, 2015

Debt Disclosure [Abstract]

Schedule of senior unsecured notes and other related disclosures by scheduled maturity date

The following table sets forth our senior unsecured notes and other related disclosures as of June 30, 2015 and December 31, 2014, respectively, by scheduled maturity date (dollars in thousands):



Issuance	June 30, 2015 Unpaid Principal Balance		June 30, 2015 Accreted Balance		December 31, 2014 Accreted Balance		Coupon Rate⁽¹⁾		Effective Rate		Term (in Years)	Maturity Date
March 31, 2006	$	255,308	$	255,272	$	255,250	6.00	%	6.00	%	10	March 31, 2016
August 5, 2011⁽²⁾	250,000		249,777		249,744		5.00	%	5.00	%	7	August 15, 2018
March 16, 2010⁽²⁾	250,000		250,000		250,000		7.75	%	7.75	%	10	March 15, 2020
November 15, 2012⁽²⁾	200,000		200,000		200,000		4.50	%	4.50	%	10	December 1, 2022
June 27, 2005⁽³⁾	—		—		7
	$	955,308	$	955,049	$	955,001

______________________________________________________________________


(1)	Interest on the senior unsecured notes is payable semi-annually with principal and unpaid interest due on the scheduled maturity dates.


(2)	Issued by SL Green, the Operating Partnership and ROP, as co-obligors.


(3)	In April 2015, we redeemed the outstanding exchangeable senior debentures.

Schedule of Combined aggregate principal maturities of mortgage and other loans payable, 2012 credit facility and senior unsecured notes, including as-of-right extension options



	Scheduled Amortization		Principal Repayments		Revolving Credit Facility		Unsecured Term Loan		Senior Unsecured Notes		Total
Remaining 2015	$	—	$	—	$	—	$	—	$	—	$	—
2016	3,566		—		—		—		255,308		258,874
2017	7,411		—		—		—		—		7,411
2018	7,799		—		—		—		250,000		257,799
2019	8,207		—		—		833,000		—		841,207
Thereafter	31,423		441,594		705,000		—		450,000		1,628,017
	$	58,406	$	441,594	$	705,000	$	833,000	$	955,308	$	2,993,308

Schedule of Consolidated Interest expense, excluding capitalized interest

Consolidated interest expense, excluding capitalized interest, was comprised of the following (in thousands):



	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
				(as adjusted)						(as adjusted)
Interest expense	$	27,654		$	31,631		$	55,390		$	63,436
Interest income	(5		)	(6		)	(12		)	(11		)
Interest expense, net	$	27,649		$	31,625		$	55,378		$	63,425
Interest capitalized	$	321		$	954		$	1,107		$	1,898

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

+ Details

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The following table provides the carrying value and fair value of these financial instruments as of June 30, 2015 and December 31, 2014 (in thousands):



	June 30, 2015					December 31, 2014
	Carrying Value			Fair Value		Carrying Value			Fair Value
						(as adjusted)			(as adjusted)
Preferred equity investments	$	168,939	⁽¹⁾	(2)		$	132,995	⁽¹⁾	(2)

Fixed rate debt	$	1,485,049		$	1,614,431	$	1,605,001		$	1,737,673
Variable rate debt	1,508,000			1,570,857		1,188,000			1,230,470
	$	2,993,049		$	3,185,288	$	2,793,001		$	2,968,143

______________________________________________________________________


(1)	Excludes one investment with a book value of $40.2 million as of June 30, 2015 and December 31, 2014, which we accounted for under the equity method accounting as a result of meeting the criteria of a real estate investment under the guidance for Acquisition, Development and Construction arrangements.


(2)	At June 30, 2015, preferred equity investments had an estimated fair value ranging between $185.8 million and $211.2 million. At December 31, 2014, preferred equity investments had an estimated fair value ranging between $146.3 million and $166.2 million.

Financial Instruments: Derivatives and Hedging (Tables)

6 Months Ended

Jun. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of notional and fair value of derivative financial instruments and foreign currency hedges

The following table summarizes the notional and fair value of our derivative financial instrument at June 30, 2015 based on Level 2 inputs. The notional value is an indication of the extent of our involvement in that instrument at that time, but does not represent exposure to credit, interest rate or market risks.



	Notional Value		Strike Rate		Effective Date	Expiration Date	Balance Sheet Location	Fair Value
Interest Rate Swap	$	30,000	2.295	%	July 2010	June 2016	Other Liabilities	$	(548	)

Schedule of effect of derivative financial instruments on consolidated statements of income



	Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)						Location of Loss Reclassified from Accumulated Other Comprehensive Loss into Income	Amount of Gain Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion)				Location of Gain Recognized in Income on Derivative	Amount of Gain Recognized into Income (Ineffective Portion)
	Three Months Ended June 30,							Three Months Ended June 30,					Three Months Ended June 30,
Derivative	2015			2014				2015		2014			2015		2014
Interest Rate Swap	$	(27	)	$	(66	)	Interest expense	$	250	$	245	Interest expense	$	1	$	1

The following table presents the effect of our derivative financial instrument that is designated and qualifies as a hedging instrument on the consolidated statements of operations for the six months ended June 30, 2015 and 2014, respectively (in thousands):



	Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)						Location of Loss Reclassified from Accumulated Other Comprehensive Loss into Income	Amount of Gain Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion)				Location of Gain Recognized in Income on Derivative	Amount of Gain Recognized into Income (Ineffective Portion)
	Six Months Ended June 30,							Six Months Ended June 30,					Six Months Ended June 30,
Derivative	2015			2014				2015		2014			2015		2014
Interest Rate Swap	$	(95	)	$	(110	)	Interest expense	$	499	$	487	Interest expense	$	2	$	2

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41641-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41678-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41638-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579240-113959

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41620-113959

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum lease payments under capital leases and noncancellable operating leases

The following is a schedule of future minimum lease payments under non-cancellable operating leases with initial terms in excess of one year as of June 30, 2015 (in thousands):



	Non-cancellable operating leases
Remaining 2015	$	10,168
2016	20,440
2017	20,586
2018	20,586
2019	20,586
Thereafter	348,672
Total minimum lease payments	$	441,038

Segment Information (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Schedule of Selected results of operations and selected asset information



	Real Estate Segment		Preferred Equity Segment		Total Company
Total revenues:
Three months ended:
June 30, 2015	$	188,624	$	4,268	$	192,892
June 30, 2014, as adjusted	164,618		8,777		173,395
Six months ended:
June 30, 2015	$	361,609	$	7,871	$	369,480
June 30, 2014, as adjusted	327,371		18,052		345,423



	Real Estate Segment		Preferred Equity Segment		Total Company
Income from continuing operations:
Three months ended:
June 30, 2015	$	31,208	$	4,374	$	35,582
June 30, 2014, as adjusted	7,666		8,216		15,882
Six months ended:
June 30, 2015	$	43,483	$	8,084	$	51,567
June 30, 2014, as adjusted	13,347		15,686		29,033
Total assets
As of:
June 30, 2015	$	6,574,369	$	209,437	$	6,783,806
December 31, 2014, as adjusted	6,607,809		173,300		6,781,109

Organization and Basis of Presentation (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($) ft² property	Mar. 31, 2015 USD ($) property	Jun. 30, 2015 USD ($) ft² property	Dec. 31, 2014 USD ($) property
Real estate properties
Percentage of ownership in SL Green Operating Partnership owned by SL Green Realty Corp (as a percent)			96.22%
Number of Properties Transferred by Parent Company \| property	1	1	3	4
Percentage of Parent's Tenancy in Common Interest in Property	60.00%	40.00%	60.00%
Carrying value of properties transferred by SL Green \| $	$ 187,300	$ 207,700	$ 187,300	$ 786,400
Number of Properties \| property	43		43
Approximate Square Feet (sqft) \| ft²	12,482,946		12,482,946
Weighted Average Occupancy (as a percent)	92.00%		92.00%
Preferred equity and other investments \| $	$ 209,129		$ 209,129	$ 173,194
Suburban
Real estate properties
Number of Properties \| property	21		21
Approximate Square Feet (sqft) \| ft²	3,469,900		3,469,900
Weighted Average Occupancy (as a percent)	82.50%		82.50%
Office \| Manhattan
Real estate properties
Number of Properties \| property	15		15
Approximate Square Feet (sqft) \| ft²	8,239,645		8,239,645
Weighted Average Occupancy (as a percent)	95.50%		95.50%
Office \| Suburban
Real estate properties
Number of Properties \| property	20		20
Approximate Square Feet (sqft) \| ft²	3,417,900		3,417,900
Weighted Average Occupancy (as a percent)	82.30%		82.30%
Retail
Real estate properties
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Number of Properties \| property	2		2
Retail \| Manhattan
Real estate properties
Number of Properties \| property	5		5
Approximate Square Feet (sqft) \| ft²	352,892		352,892
Weighted Average Occupancy (as a percent)	98.80%		98.80%
Retail \| Suburban
Real estate properties
Number of Properties \| property	1		1
Approximate Square Feet (sqft) \| ft²	52,000		52,000
Weighted Average Occupancy (as a percent)	100.00%		100.00%
Fee Interest \| Manhattan
Real estate properties
Number of Properties \| property	2		2
Approximate Square Feet (sqft) \| ft²	197,654		197,654
Weighted Average Occupancy (as a percent)	100.00%		100.00%
Commercial Properties
Real estate properties
Number of Properties \| property	43		43
Approximate Square Feet (sqft) \| ft²	12,260,091		12,260,091
Weighted Average Occupancy (as a percent)	92.00%		92.00%
Commercial Properties \| Manhattan
Real estate properties
Number of Properties \| property	22		22
Approximate Square Feet (sqft) \| ft²	8,790,191		8,790,191
Weighted Average Occupancy (as a percent)	95.70%		95.70%
Residential \| Manhattan
Real estate properties
Number of Properties \| property	0		0
Approximate Square Feet (sqft) \| ft²	222,855		222,855
Weighted Average Occupancy (as a percent)	96.40%		96.40%
Dual property type, retail portion
Real estate properties
Approximate Square Feet (sqft) \| ft²	270,132		270,132
Dual property type, residential portion
Real estate properties
Approximate Square Feet (sqft) \| ft²	222,855		222,855

Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Investment in Commercial Real Estate Properties
Increase in rental revenue from amortization of acquired leases	$ 6,900	$ 5,400	$ 12,600	$ 11,200
Identified intangible assets (included in other assets):
Gross amount	289,180		289,180		$ 293,354
Accumulated amortization	(221,273)		(221,273)		(212,957)
Net	67,907		67,907		80,397
Identified intangible liabilities (included in deferred revenue):
Gross amount	434,723		434,723		443,520
Accumulated amortization	(324,960)		(324,960)		(315,889)
Net	109,763		109,763		$ 127,631
Net intangible assets transferred to assets held for sale	1,800		1,800
Net intangible liabilities transferred to liabilities related to assets held for sale	$ 5,800		$ 5,800
Above-market leases \| Minimum
Investment in Commercial Real Estate Properties
Estimated useful life of intangible assets (years)			1 year
Above-market leases \| Maximum
Investment in Commercial Real Estate Properties
Estimated useful life of intangible assets (years)			14 years
Below-market leases \| Minimum
Investment in Commercial Real Estate Properties
Estimated useful life of intangible assets (years)			1 year
Below-market leases \| Maximum
Investment in Commercial Real Estate Properties
Estimated useful life of intangible assets (years)			14 years
In-place leases \| Minimum
Investment in Commercial Real Estate Properties
Estimated useful life of intangible assets (years)			1 year
In-place leases \| Maximum
Investment in Commercial Real Estate Properties
Estimated useful life of intangible assets (years)			14 years
Building \| Minimum
Investment in Commercial Real Estate Properties
Estimated useful life (years)			3 years
Building \| Maximum
Investment in Commercial Real Estate Properties
Estimated useful life (years)			40 years

Significant Accounting Policies (Details 2)	6 Months Ended
Significant Accounting Policies (Details 2)	Jun. 30, 2015
Revenue Recognition
Period after which payments become due (days)	90 days

Significant Accounting Policies (Details 3)	3 Months Ended		6 Months Ended
Significant Accounting Policies (Details 3)	Jun. 30, 2015 property	Mar. 31, 2015 property	Jun. 30, 2015 Tenant property	Dec. 31, 2014 property
Concentrations of Credit Risk
Number of tenants concentration risk \| Tenant			2
Number of Properties Transferred by Parent Company \| property	1	1	3	4
Annualized cash rent \| Customer concentration
Concentrations of Credit Risk
Maximum percentage of annualized cash rent for any one tenant not individually disclosed (more than)	2.70%		2.70%
Annualized cash rent \| Customer concentration \| 1185 Avenue of the Americas
Concentrations of Credit Risk
Percentage of concentration			15.70%
Annualized cash rent \| Customer concentration \| 625 Madison Avenue
Concentrations of Credit Risk
Percentage of concentration			9.80%
Annualized cash rent \| Customer concentration \| 750 Third Avenue
Concentrations of Credit Risk
Percentage of concentration			7.90%
Annualized cash rent \| Customer concentration \| 919 Third Avenue
Concentrations of Credit Risk
Percentage of concentration			8.40%
Annualized cash rent \| Customer concentration \| 1350 Avenue of the Americas
Concentrations of Credit Risk
Percentage of concentration			7.10%
Annualized cash rent \| Tenant 1 \| Customer concentration
Concentrations of Credit Risk
Percentage of concentration			4.60%
Annualized cash rent \| Tenant 2 \| Customer concentration
Concentrations of Credit Risk
Percentage of concentration			3.70%

Property Acquisition (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
Property Acquisition (Details) - USD ($) $ in Thousands	Oct. 31, 2014	Jul. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed
Impact to rental revenue for amortization of aggregate below-market leases			$ 153,082	$ 142,440	$ 302,477	$ 283,438
Impact to depreciation expense			$ 50,241	$ 49,949	99,669	$ 99,791
102 Greene Street
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed
Land	$ 8,215
Building and building leasehold	26,717
Above-market lease value	0
Acquired in-place lease value	1,015
Other assets, net of other liabilities	3
Assets acquired	35,950
Mark-to-market assumed debt	0
Below-market lease value	3,701
Liabilities assumed	3,701
Purchase price	32,249
Net consideration funded by us at closing, excluding consideration financed by debt	32,249
Equity and/or debt investment held	0
Debt assumed	0
115 Spring Street
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed
Land		$ 11,078
Building and building leasehold		44,799
Above-market lease value		0
Acquired in-place lease value		2,037
Other assets, net of other liabilities		0
Assets acquired		57,914
Mark-to-market assumed debt		0
Below-market lease value		4,789
Liabilities assumed		4,789
Purchase price		53,125
Net consideration funded by us at closing, excluding consideration financed by debt		53,125
Equity and/or debt investment held		0
Debt assumed		0
Impact to rental revenue for amortization of aggregate below-market leases					1,100
Impact to depreciation expense					$ 1,000
Scenario, Previously Reported \| 102 Greene Street
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed
Land	11,300
Building and building leasehold	$ 21,000
Scenario, Previously Reported \| 115 Spring Street
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed
Land		15,900
Building and building leasehold		$ 37,200

Property Held for Sale and Property Disposition (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2015
Revenues
Rental revenue	$ 2,777	$ 7,853
Escalation and reimbursement revenues	259	1,080
Total revenues	3,036	8,933
Operating expenses	280	1,164
Real estate taxes	383	1,402
Ground rent	805	3,001
Interest expense, net of interest income	220	879
Depreciation and amortization	0	433
Total expenses	1,688	6,879
Net income from discontinued operations	$ 1,348	$ 2,054
131-137 Spring Street
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage in disposed asset			80.00%
Gross asset valuation of disposed asset			$ 277,800

Preferred Equity and Other Investments (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($) extenstion_option	Dec. 31, 2014 USD ($)
Debt and preferred equity investments
Future Funding Obligations	$ 5,580
Senior Financing	680,795
Carrying Value	$ 168,939	$ 132,995
Debt and preferred equity
Debt and preferred equity investments
Interest rate (as a percent)	10.18%
Preferred Equity, Redeemed July 2015
Debt and preferred equity investments
Future Funding Obligations	$ 0
Senior Financing	550,000
Carrying Value	126,817	123,041
Preferred Equity, March 2018
Debt and preferred equity investments
Future Funding Obligations	0
Senior Financing	70,000
Carrying Value	9,960	9,954
Preferred Equity, November 2018
Debt and preferred equity investments
Future Funding Obligations	5,580
Senior Financing	60,795
Carrying Value	32,162	0
Participating Financing
Debt and preferred equity investments
Equity method investment	$ 40,200	$ 40,200
Number of one-year extension options \| extenstion_option	3
Extension period (years)	1 year
Last extension period (years)	2 years

Mortgages Payable (Details) - USD ($) $ in Thousands	3 Months Ended
Mortgages Payable (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Mortgage note and other loan payable
Mortgages payable	$ 500,000	$ 620,000
Gross book value of the property and investment collateralizing the mortgage note and other loan payable	$ 1,300,000	1,400,000
919 Third Avenue
Mortgage note and other loan payable
Interest rate (as a percent)	5.12%
Secured debt	$ 500,000	500,000
Controlling interest in the joint venture (as a percent)	51.00%
711 Third Avenue
Mortgage note and other loan payable
Secured debt	$ 0	$ 120,000

Corporate Indebtedness (Details) - USD ($)	1 Months Ended			3 Months Ended		6 Months Ended
Corporate Indebtedness (Details) - USD ($)	Jan. 31, 2015	Nov. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014
Corporate Indebtedness
Maximum borrowing capacity			$ 1,600,000,000.0
Revolving credit facility				$ 705,000,000		$ 705,000,000			$ 385,000,000
Debt disclosures by scheduled maturity date
Accreted Balance				1,788,049,000		1,788,049,000			1,788,001,000
Scheduled amortization and principal repayments
Remaining 2015				0		0
2016				258,874,000		258,874,000
2017				7,411,000		7,411,000
2018				257,799,000		257,799,000
2019				841,207,000		841,207,000
Thereafter				1,628,017,000		1,628,017,000
Total amortization of debt and principal repayments				2,993,308,000		2,993,308,000
Interest expense
Interest expense				27,654,000	$ 31,631,000	55,390,000	$ 63,436,000
Interest income				(5,000)	(6,000)	(12,000)	(11,000)
Interest expense, net				27,649,000	31,625,000	55,378,000	63,425,000
Interest capitalized				321,000	$ 954,000	1,107,000	$ 1,898,000
Term loan
Corporate Indebtedness
Maximum borrowing capacity		$ 833,000,000		$ 833,000,000		$ 833,000,000		$ 783,000,000
Increase in credit facility		$ 50,000,000	$ 383,000,000
Decrease in interest-rate margin (as a percent)	0.20%		0.25%
Decrease in facility fee (as a percent)	0.05%
Debt disclosures by scheduled maturity date
Effective Rate (as a percent)				1.66%		1.66%
Scheduled amortization and principal repayments
Remaining 2015				$ 0		$ 0
2016				0		0
2017				0		0
2018				0		0
2019				833,000,000		833,000,000
Thereafter				0		0
Total amortization of debt and principal repayments				833,000,000		833,000,000
Revolving credit facility
Corporate Indebtedness
Maximum borrowing capacity				1,200,000,000.0		1,200,000,000.0
Maximum borrowing capacity, optional expansion				1,500,000,000.0		1,500,000,000.0
Revolving credit facility				$ 705,000,000		$ 705,000,000
Debt disclosures by scheduled maturity date
Effective Rate (as a percent)				1.44%		1.44%
Scheduled amortization and principal repayments
Remaining 2015				$ 0		$ 0
2016				0		0
2017				0		0
2018				0		0
2019				0		0
Thereafter				705,000,000		705,000,000
Total amortization of debt and principal repayments				705,000,000		$ 705,000,000
Revolving credit facility \| Minimum
Corporate Indebtedness
Unused balance fee (as a percent)						0.125%
Facility fee on total commitments, payable quarterly in arrears (as a percent)						0.25%
Revolving credit facility \| Maximum
Corporate Indebtedness
Unused balance fee (as a percent)						0.30%
Credit Facility 2012
Corporate Indebtedness
Letters of credit				89,400,000		$ 89,400,000
Ability to borrow under line of credit facility				405,600,000		405,600,000
Mortgage and Other Loans Payable
Scheduled Amortization
Remaining 2015				0		0
2016				3,566,000		3,566,000
2017				7,411,000		7,411,000
2018				7,799,000		7,799,000
2019				8,207,000		8,207,000
Thereafter				31,423,000		31,423,000
Total amortization of debt				58,406,000		58,406,000
Principal Repayments
Remaining 2015				0		0
2016				0		0
2017				0		0
2018				0		0
2019				0		0
Thereafter				441,594,000		441,594,000
Total principal repayments				441,594,000		441,594,000
Senior Unsecured Notes
Scheduled amortization and principal repayments
Remaining 2015				0		0
2016				255,308,000		255,308,000
2017				0		0
2018				250,000,000		250,000,000
2019				0		0
Thereafter				450,000,000		450,000,000
Total amortization of debt and principal repayments				955,308,000		$ 955,308,000
LIBOR \| Term loan
Corporate Indebtedness
Interest rate added to base rate (as a percent)						1.40%
LIBOR \| Term loan \| Minimum
Corporate Indebtedness
Interest rate added to base rate (as a percent)						0.95%
LIBOR \| Term loan \| Maximum
Corporate Indebtedness
Interest rate added to base rate (as a percent)						1.90%
LIBOR \| Revolving credit facility
Corporate Indebtedness
Interest rate added to base rate (as a percent)						1.25%
LIBOR \| Revolving credit facility \| Minimum
Corporate Indebtedness
Interest rate added to base rate (as a percent)						0.875%
LIBOR \| Revolving credit facility \| Maximum
Corporate Indebtedness
Interest rate added to base rate (as a percent)						1.55%
Senior Unsecured Notes
Debt disclosures by scheduled maturity date
Unpaid Principal Balance				955,308,000		$ 955,308,000
Accreted Balance				955,049,000		955,049,000			955,001,000
Senior Unsecured Notes \| 6.00% senior unsecured notes maturing on March 31, 2016
Debt disclosures by scheduled maturity date
Unpaid Principal Balance				255,308,000		255,308,000
Accreted Balance				$ 255,272,000		$ 255,272,000			255,250,000
Coupon Rate (as a percent)				6.00%		6.00%
Effective Rate (as a percent)				6.00%		6.00%
Term (in Years)						10 years
Senior Unsecured Notes \| 5.00% senior unsecured notes maturing on August 15, 2018
Debt disclosures by scheduled maturity date
Unpaid Principal Balance				$ 250,000,000		$ 250,000,000
Accreted Balance				$ 249,777,000		$ 249,777,000			249,744,000
Coupon Rate (as a percent)				5.00%		5.00%
Effective Rate (as a percent)				5.00%		5.00%
Term (in Years)						7 years
Senior Unsecured Notes \| 7.75% senior unsecured notes maturing on March 15, 2020
Debt disclosures by scheduled maturity date
Unpaid Principal Balance				$ 250,000,000		$ 250,000,000
Accreted Balance				$ 250,000,000		$ 250,000,000			250,000,000
Coupon Rate (as a percent)				7.75%		7.75%
Effective Rate (as a percent)				7.75%		7.75%
Term (in Years)						10 years
Senior Unsecured Notes \| 4.50% senior unsecured notes maturing on December 01, 2022
Debt disclosures by scheduled maturity date
Unpaid Principal Balance				$ 200,000,000		$ 200,000,000
Accreted Balance				$ 200,000,000		$ 200,000,000			200,000,000
Coupon Rate (as a percent)				4.50%		4.50%
Effective Rate (as a percent)				4.50%		4.50%
Term (in Years)						10 years
Senior Unsecured Notes \| 4.00% senior unsecured notes maturing on June 15, 2025
Debt disclosures by scheduled maturity date
Unpaid Principal Balance				$ 0		$ 0
Accreted Balance				$ 0		$ 0			$ 7,000
Senior Unsecured Notes \| 3.00% exchangeable senior notes due 2017
Debt disclosures by scheduled maturity date
Coupon Rate (as a percent)				3.00%		3.00%

Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value of Financial Instruments
Preferred equity investments	$ 168,939	$ 132,995
Carrying Value \| Level 3
Fair Value of Financial Instruments
Preferred equity investments	168,939	132,995
Fixed rate debt	1,485,049	1,605,001
Variable rate debt	1,508,000	1,188,000
Total	2,993,049	2,793,001
Fair Value \| Level 3
Fair Value of Financial Instruments
Fixed rate debt	1,614,431	1,737,673
Variable rate debt	1,570,857	1,230,470
Total	3,185,288	2,968,143
Fair Value \| Level 3 \| Minimum
Fair Value of Financial Instruments
Preferred equity investments	185,800	146,300
Fair Value \| Level 3 \| Maximum
Fair Value of Financial Instruments
Preferred equity investments	211,200	166,200
Participating Financing
Fair Value of Financial Instruments
Equity method investment	$ 40,200	$ 40,200

Financial Instruments: Derivatives and Hedging (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Loss from settlement of hedges included in accumulated other comprehensive loss			$ 2,200		$ 2,300
Estimated current balance held in accumulated other comprehensive loss to be reclassified into earnings within the next 12 months			900
Interest Rate Swap Expiring in June 2016
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 30,000		$ 30,000
Strike Rate (percent)	2.295%		2.295%
Fair Value	$ (548)		$ (548)
Interest Rate Swap
Derivative [Line Items]
Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)	(27)	$ (66)	(95)	$ (110)
Amount of Gain Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion)	250	245	499	487
Amount of Gain Recognized into Income (Ineffective Portion)	$ 1	$ 1	$ 2	$ 2

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Affiliate
Related Party Transactions
Profit participation received by related party	$ 0.8	$ 0.8	$ 1.7	$ 1.6
Alliance Building Services
Related Party Transactions
Payments made for services	2.1	2.1	4.0	3.6
SL Green
Related Party Transactions
Allocation of salary and other operating costs from related party	2.5	2.3	4.9	4.6
Insurance expense incurred	$ 1.7	$ 1.6	$ 3.3	$ 3.2

Commitments and Contingencies (Details) $ in Thousands	6 Months Ended
Commitments and Contingencies (Details) $ in Thousands	Jun. 30, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Minimum initial term of noncancellable operating leases (in years)	1 year
Non-cancellable operating leases
Remaining 2015	$ 10,168
2016	20,440
2017	20,586
2018	20,586
2019	20,586
Thereafter	348,672
Total minimum lease payments	$ 441,038

Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
Segment Information (Details) $ in Thousands	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Segment information
Number of reportable segments \| segment			2
Total revenues	$ 192,892	$ 173,395	$ 369,480	$ 345,423
Income from continuing operations	35,582	15,882	51,567	29,033
Total assets	6,783,806		$ 6,783,806		$ 6,781,109
Leverage rate assumption (as a percent)			100.00%
Operating Segments \| Real Estate Segment
Segment information
Total revenues	188,624	164,618	$ 361,609	327,371
Income from continuing operations	31,208	7,666	43,483	13,347
Total assets	6,574,369		6,574,369		6,607,809
Operating Segments \| Preferred Equity Segment
Segment information
Total revenues	4,268	8,777	7,871	18,052
Income from continuing operations	4,374	$ 8,216	8,084	$ 15,686
Total assets	$ 209,437		$ 209,437		$ 173,300

Subsequent Events (Details) - USD ($)		1 Months Ended
Subsequent Events (Details) - USD ($)	Aug. 12, 2015	Jul. 31, 2015	Nov. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Mar. 31, 2015
Subsequent Event [Line Items]
Maximum borrowing capacity				$ 1,600,000,000.0
Subsequent Event
Subsequent Event [Line Items]
Increase in credit facility		$ 500,000,000
Maximum borrowing capacity		2,533,000,000.000
Net Book Value of debt investments received in transfer	$ 1,700,000,000
Revolving credit facility
Subsequent Event [Line Items]
Maximum borrowing capacity					$ 1,200,000,000.0
Revolving credit facility \| Subsequent Event
Subsequent Event [Line Items]
Increase in credit facility		400,000,000
Maximum borrowing capacity		1,600,000,000.0
Term loan
Subsequent Event [Line Items]
Increase in credit facility			$ 50,000,000	$ 383,000,000
Maximum borrowing capacity			$ 833,000,000		$ 833,000,000	$ 783,000,000
Term loan \| Subsequent Event
Subsequent Event [Line Items]
Increase in credit facility		100,000,000
Maximum borrowing capacity		$ 933,000,000.0