10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

___________________________________________

FORM 10-Q

___________________________________________

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2015

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                to

Commission File Number: 1-13199 (SL Green Realty Corp.)

Commission File Number: 33-167793-02 (SL Green Operating Partnership, L.P.)

___________________________________________

SL GREEN REALTY CORP.

SL GREEN OPERATING PARTNERSHIP, L.P.

(Exact name of registrant as specified in its charter)

___________________________________________

SL Green Realty Corp.	Maryland	13-3956775
SL Green Operating Partnership, L.P.	Delaware	13-3960938
	(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

420 Lexington Avenue, New York, New York 10170

(Address of principal executive offices) (Zip Code)

(212) 594-2700

(Registrant’s telephone number, including area code)

___________________________________________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. 

SL Green Realty Corp. YES x  NO o SL Green Operating Partnership, L.P. YES x  NO o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

SL Green Realty Corp. YES x  NO o SL Green Operating Partnership, L.P. YES x  NO o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.  See definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

SL Green Realty Corp.

Large accelerated filer x	Accelerated filer o	Non-accelerated filer o	Smaller Reporting Company o
		(Do not check if a smaller reporting company)

SL Green Operating Partnership, L.P.

Large accelerated filer o	Accelerated filer o	Non-accelerated filer x	Smaller Reporting Company o
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

SL Green Realty Corp. YES o NO x SL Green Operating Partnership, L.P. YES o  NO x

The number of shares outstanding of SL Green Realty Corp.'s common stock, $0.01 par value, was 99,582,364 as of May 4, 2015. As of May 4, 2015, 1,005,426 common units of limited partnership interest of SL Green Operating Partnership, L.P. were held by non-affiliates. There is no established trading market for such units.

EXPLANATORY NOTE

This report combines the quarterly reports on Form 10-Q for the period ended March 31, 2015 of SL Green Realty Corp. and SL Green Operating Partnership, L.P. Unless stated otherwise or the context otherwise requires, references to "SL Green Realty Corp.," the "Company" or "SL Green" mean SL Green Realty Corp. and its consolidated subsidiaries; and references to "SL Green Operating Partnership, L.P.," the "Operating Partnership" or "SLGOP" mean SL Green Operating Partnership, L.P. and its consolidated subsidiaries. The terms "we," "our" and "us" mean the Company and all the entities owned or controlled by the Company, including the Operating Partnership.

The Company is a Maryland corporation which operates as a self-administered and self-managed real estate investment trust, or REIT, and is the sole managing general partner of the Operating Partnership. As a general partner of the Operating Partnership, the Company has full, exclusive and complete responsibility and discretion in the day-to-day management and control of the Operating Partnership.

The Company owns 96.22% of the outstanding general and limited partnership interest in the Operating Partnership. The Company also owns 9,200,000 Series I Preferred Units of the Operating Partnership. As of March 31, 2015, noncontrolling investors held, in aggregate, a 3.78% limited partnership interest in the Operating Partnership. We refer to these interests as the noncontrolling interests in the Operating Partnership.

The Company and the Operating Partnership are managed and operated as one entity. The financial results of the Operating Partnership are consolidated into the financial statements of the Company. The Company has no significant assets other than its investment in the Operating Partnership. Substantially all of our assets are held by, and our operations are conducted through, the Operating Partnership. Therefore, the assets and liabilities of the Company and the Operating Partnership are substantially the same.

Noncontrolling interests in the Operating Partnership, stockholders' equity of the Company and partners' capital of the Operating Partnership are the main areas of difference between the consolidated financial statements of the Company and those of the Operating Partnership. The common limited partnership interests in the Operating Partnership not owned by the Company are accounted for as partners' capital in the Operating Partnership’s consolidated financial statements and as noncontrolling interests, within mezzanine equity, in the Company's consolidated financial statements.

We believe combining the quarterly reports on Form 10-Q of the Company and the Operating Partnership into this single report results in the following benefits:

• Combined reports enhance investors' understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;

• Combined reports eliminate duplicative disclosure and provides a more streamlined and readable presentation since a substantial portion of the Company's disclosure applies to both the Company and the Operating Partnership; and

• Combined reports create time and cost efficiencies through the preparation of one combined report instead of two separate reports.

To help investors understand the significant differences between the Company and the Operating Partnership, this report presents the following separate sections for each of the Company and the Operating Partnership:

• consolidated financial statements;

• the following notes to the consolidated financial statements:

◦ Note 11, Noncontrolling Interests on the Company’s Consolidated Financial Statements;

◦ Note 12, Stockholders' Equity of the Company;

◦ Note 13, Partners' Capital of the Operating Partnership;

◦ Note 15, Accumulated Other Comprehensive Loss of the Company;

◦ Note 16, Accumulated Other Comprehensive Loss of the Operating Partnership.

This report also includes separate Part I, Item 4. Controls and Procedures sections and separate Exhibit 31 and 32 certifications for each of the Company and the Operating Partnership, respectively, in order to establish that the Chief Executive Officer and the Chief Financial Officer of the Company, in both their capacity as the principal executive officer and principal financial officer of the Company and the principal executive officer and principal financial officer of the general partner of the Operating Partnership, have made the requisite certifications and that the Company and the Operating Partnership are compliant with Rule 13a-15 and Rule 15d-15 of the Securities Exchange Act of 1934, as amended.

SL GREEN REALTY CORP. AND SL GREEN OPERATING PARTNERSHIP, L.P.

TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION
Item 1.	FINANCIAL STATEMENTS	4
	FINANCIAL STATEMENTS OF SL GREEN REALTY CORP.
	Consolidated Balance Sheets as of March 31, 2015 (unaudited) and December 31, 2014	4
	Consolidated Statements of Income for the three months ended March 31, 2015 and 2014 (unaudited)	6
	Consolidated Statements of Comprehensive Income for the three months ended March 31, 2015 and 2014 (unaudited)	8
	Consolidated Statement of Equity for the three months ended March 31, 2015 (unaudited)	9
	Consolidated Statements of Cash Flows for the three months ended March 31, 2015 and 2014 (unaudited)	10
	FINANCIAL STATEMENTS OF SL GREEN OPERATING PARTNERSHIP, L.P.
	Consolidated Balance Sheets as of March 31, 2015 (unaudited) and December 31, 2014	12
	Consolidated Statements of Income for the three months ended March 31, 2015 and 2014 (unaudited)	14
	Consolidated Statements of Comprehensive Income for the three months ended March 31, 2015 and 2014 (unaudited)	16
	Consolidated Statement of Capital for the three months ended March 31, 2015 (unaudited)	17
	Consolidated Statements of Cash Flows for the three months ended March 31, 2015 and 2014 (unaudited)	18
	Notes to Consolidated Financial Statements (unaudited)	20
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	52
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	68
Item 4.	Controls and Procedures (SL Green Realty Corp. and SL Green Operating Partnership, L.P.)	68
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	70
Item 1A.	Risk Factors	70
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	70
Item 3.	Defaults Upon Senior Securities	70
Item 4.	Mine Safety Disclosures	70
Item 5.	Other Information	70
Item 6.	Exhibits	71
	Signatures	72

PART I. FINANCIAL INFORMATION

ITEM 1.    Financial Statements

SL Green Realty Corp.

Consolidated Balance Sheets

(in thousands, except per share data)

	March 31, 2015			December 31, 2014
	(unaudited)
Assets
Commercial real estate properties, at cost:
Land and land interests	$	3,830,787		$	3,844,518
Building and improvements	8,697,145			8,778,593
Building leasehold and improvements	1,423,087			1,418,585
Property under capital lease	27,445			27,445
	13,978,464			14,069,141
Less: accumulated depreciation	(1,973,674		)	(1,905,165		)
	12,004,790			12,163,976
Assets held for sale	—			462,430
Cash and cash equivalents	330,770			281,409
Restricted cash	128,834			149,176
Investment in marketable securities	47,716			39,429
Tenant and other receivables, net of allowance of $18,047 and $18,068 in 2015 and 2014, respectively	50,156			57,369
Related party receivables	12,088			11,735
Deferred rents receivable, net of allowance of $26,480 and $27,411 in 2015 and 2014, respectively	408,229			374,944
Debt and preferred equity investments, net of discounts and deferred origination fees of $18,797 and $19,172 in 2015 and 2014, respectively	1,548,739			1,408,804
Investments in unconsolidated joint ventures	1,244,185			1,172,020
Deferred costs, net	326,555			327,962
Other assets	978,670			647,333
Total assets	$	17,080,732		$	17,096,587
Liabilities
Mortgages and other loans payable	$	5,359,043		$	5,586,709
Revolving credit facility	520,000			385,000
Term loan and senior unsecured notes	2,110,041			2,107,078
Accrued interest payable and other liabilities	162,910			137,634
Accounts payable and accrued expenses	151,427			173,246
Deferred revenue	369,626			187,148
Capitalized lease obligations	20,917			20,822
Deferred land leases payable	1,301			1,215
Dividend and distributions payable	65,868			64,393
Security deposits	66,427			66,614
Liabilities related to assets held for sale	—			266,873
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities	100,000			100,000
Total liabilities	8,927,560			9,096,732
Commitments and contingencies	—			—
Noncontrolling interests in Operating Partnership	498,881			469,524
Preferred units	110,915			71,115

4

SL Green Realty Corp.

Consolidated Balance Sheets

(in thousands, except per share data)

	March 31, 2015			December 31, 2014
	(unaudited)
Equity
SL Green stockholders' equity:
Series I Preferred Stock, $0.01 par value, $25.00 liquidation preference, 9,200 issued and outstanding at both March 31, 2015 and December 31, 2014	221,932			221,932
Common stock, $0.01 par value, 160,000 shares authorized and 103,176and 100,928 issued and outstanding at March 31, 2015 and December 31, 2014, respectively (including3,643 and 3,603 shares held in Treasury at March 31, 2015 and December 31, 2014, respectively)	1,032			1,010
Additional paid-in-capital	5,572,410			5,289,479
Treasury stock at cost	(325,207		)	(320,471		)
Accumulated other comprehensive loss	(11,810		)	(6,980		)
Retained earnings	1,690,578			1,752,404
Total SL Green stockholders' equity	7,148,935			6,937,374
Noncontrolling interests in other partnerships	394,441			521,842
Total equity	7,543,376			7,459,216
Total liabilities and equity	$	17,080,732		$	17,096,587

The accompanying notes are an integral part of these financial statements.

5

SL Green Realty Corp.

Consolidated Statements of Income

(unaudited, in thousands, except per share data)

	Three Months Ended March 31,
	2015			2014
Revenues
Rental revenue, net	$	303,329		$	255,976
Escalation and reimbursement	40,969			37,807
Investment income	42,069			54,084
Other income	9,932			14,578
Total revenues	396,299			362,445
Expenses
Operating expenses, including related party expenses of $3,808 and $3,513 in 2015 and 2014, respectively	76,777			69,909
Real estate taxes	55,723			52,350
Ground rent	8,188			8,033
Interest expense, net of interest income	75,807			76,178
Amortization of deferred financing costs	6,615			3,657
Depreciation and amortization	108,337			86,515
Transaction related costs	1,143			2,474
Marketing, general and administrative	25,464			23,257
Total expenses	358,054			322,373
Income from continuing operations before equity in net income from unconsolidated joint ventures, equity in net gain on sale of interest in unconsolidated joint venture/real estate and (loss) gain on early extinguishment of debt	38,245			40,072
Equity in net income from unconsolidated joint ventures	4,030			6,128
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—			104,640
(Loss) gain on early extinguishment of debt	(49		)	3
Income from continuing operations	42,226			150,843
Net income from discontinued operations	427			5,769
Gain on sale of discontinued operations	12,983			—
Net income	55,636			156,612
Net income attributable to noncontrolling interests:
Noncontrolling interests in the Operating Partnership	(1,743		)	(4,729		)
Noncontrolling interests in other partnerships	(5,927		)	(1,490		)
Preferred units distributions	(951		)	(565		)
Net income attributable to SL Green	47,015			149,828
Perpetual preferred stock dividends	(3,738		)	(3,738		)
Net income attributable to SL Green common stockholders	$	43,277		$	146,090
Amounts attributable to SL Green common stockholders:
Income from continuing operations before gains on sale and discontinued operations	$	30,387		$	39,143
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—			101,359
Net income from discontinued operations	410			5,588
Gain on sale of discontinued operations	12,480			—
Net income attributable to SL Green common stockholders	$	43,277		$	146,090

6

SL Green Realty Corp.

Consolidated Statements of Income

(unaudited, in thousands, except per share data)

	Three Months Ended March 31,
	2015		2014
Basic earnings per share:
Income from continuing operations before gains on sale and discontinued operations	$	0.31	$	0.41
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—		1.07
Net income from discontinued operations	—		0.06
Gain on sale of discontinued operations	0.13		—
Net income attributable to SL Green common stockholders	$	0.44	$	1.54
Diluted earnings per share:
Income from continuing operations before gains on sale and discontinued operations	$	0.31	$	0.41
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—		1.06
Net income from discontinued operations	—		0.06
Gain on sale of discontinued operations	0.13		—
Net income attributable to SL Green common stockholders	$	0.44	$	1.53
Dividends per share	$	0.60	$	0.50
Basic weighted average common shares outstanding	98,402		95,117
Diluted weighted average common shares and common share equivalents outstanding	103,019		98,716

The accompanying notes are an integral part of these financial statements.

7

SL Green Realty Corp.

Consolidated Statements of Comprehensive Income

(unaudited, in thousands)

	Three Months Ended March 31,
	2015			2014
Net income	$	55,636		$	156,612
Other comprehensive (loss) income:
Change in net unrealized (loss) gain on derivative instruments, including SL Green's share of joint venture net unrealized (loss) gain on derivative instruments	(5,680		)	168
Change in unrealized gain on marketable securities	650			129
Other comprehensive (loss) income	(5,030		)	297
Comprehensive income	50,606			156,909
Net income attributable to noncontrolling interests and preferred units distributions	(8,621		)	(6,784		)
Other comprehensive loss attributable to noncontrolling interests	200			42
Comprehensive income attributable to SL Green	$	42,185		$	150,167

The accompanying notes are an integral part of these financial statements.

8

SL Green Realty Corp.

Consolidated Statement of Equity

(unaudited, in thousands, except per share data)

	SL Green Realty Corp. Stockholders
				Common Stock
		Series I Preferred Stock		Shares	Par Value		Additional Paid- In-Capital		Treasury Stock			Accumulated Other Comprehensive Loss			Retained Earnings			Noncontrolling Interests			Total
Balance at December 31, 2014		$	221,932	97,325	$	1,010	$	5,289,479	$	(320,471	)	$	(6,980	)	$	1,752,404		$	521,842		$	7,459,216
Net income															47,015			5,927			52,942
Acquisition of subsidiary interest from noncontrolling interest							7,564											(11,084		)	(3,520		)
Other comprehensive loss												(4,830		)							(4,830		)
Preferred dividends															(3,738		)				(3,738		)
DRSPP proceeds				775	8		99,488														99,496
Conversion of units of the Operating Partnership to common stock				317	3		37,404														37,407
Reallocation of noncontrolling interest in the Operating Partnership															(45,456		)				(45,456		)
Reallocation of capital account relating to sale																		(10,144		)	(10,144		)
Deferred compensation plan and stock award, net				26			1,306		(4,736		)										(3,430		)
Amortization of deferred compensation plan							6,239														6,239
Issuance of common stock				953	10		120,587														120,597
Proceeds from stock options exercised				137	1		10,343														10,344
Contributions to consolidated joint venture interests																					—
Cash distributions to noncontrolling interests																		(112,100		)	(112,100		)
Cash distributions declared ($0.60 per common share, none of which represented a return of capital for federal income tax purposes)															(59,647		)				(59,647		)
Balance at March 31, 2015		$	221,932	99,533	$	1,032	$	5,572,410	$	(325,207	)	$	(11,810	)	$	1,690,578		$	394,441		$	7,543,376

The accompanying notes are an integral part of these financial statements.

9

SL Green Realty Corp.

Consolidated Statements of Cash Flows

(unaudited, in thousands)

	Three Months Ended March 31,
	2015			2014
Operating Activities
Net income	$	55,636		$	156,612
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	114,955			93,680
Equity in net income from unconsolidated joint ventures	(4,030		)	(6,128		)
Distributions of cumulative earnings from unconsolidated joint ventures	15,489			7,669
Equity in net gain on sale of interest in unconsolidated joint venture interest/real estate	—			(104,640		)
Gain on sale of discontinued operations	(12,983		)	—
Loss (gain) on early extinguishment of debt	49			(3		)
Deferred rents receivable	(32,367		)	(11,133		)
Other non-cash adjustments	4,590			(12,792		)
Changes in operating assets and liabilities:
Restricted cash—operations	(1,652		)	(10,520		)
Tenant and other receivables	7,096			11,899
Related party receivables	(353		)	(11,885		)
Deferred lease costs	(11,017		)	(4,476		)
Other assets	(38,280		)	(32,949		)
Accounts payable, accrued expenses and other liabilities and security deposits	(20,230		)	(1,821		)
Deferred revenue and land leases payable	14,056			14,635
Net cash provided by operating activities	90,959			88,148
Investing Activities
Acquisitions of real estate property	(6,290		)	—
Additions to land, buildings and improvements	(47,117		)	(48,213		)
Escrowed cash—capital improvements/acquisition deposits	(3,084		)	(34,861		)
Investments in unconsolidated joint ventures	(83,772		)	(18,966		)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	45,546			72,558
Proceeds from disposition of real estate/joint venture interest	485,540			109,196
Proceeds from sale of marketable securities	133			—
Purchases of marketable securities	(7,769		)	—
Other investments	(5,424		)	(1,573		)
Origination of debt and preferred equity investments	(174,420		)	(150,464		)
Repayments or redemption of debt and preferred equity investments	26,954			522
Net cash provided by (used in) investing activities	230,297			(71,801		)

10

SL Green Realty Corp.

Consolidated Statements of Cash Flows

(unaudited, in thousands)

	Three Months Ended March 31,
	2015			2014
Financing Activities
Proceeds from mortgages and other loans payable	$	—		$	121,216
Repayments of mortgages and other loans payable	(481,608		)	(10,772		)
Proceeds from revolving credit facility and senior unsecured notes	665,000			603,000
Repayments of revolving credit facility and senior unsecured notes	(530,000		)	(440,690		)
Proceeds from stock options exercised and DRSSP issuance	109,840			8,992
Net proceeds from sale of common stock	120,597			24
Redemption of preferred unit	(200		)	—
Distributions to noncontrolling interests in other partnerships	(110,867		)	(1,586		)
Contributions from noncontrolling interests in other partnerships	—			517
Distributions to noncontrolling interests in the Operating Partnership	(2,349		)	(1,500		)
Dividends paid on common and preferred stock	(62,903		)	(51,652		)
Other obligations related to mortgage loan participations	25,000			—
Deferred loan costs and capitalized lease obligation	(4,405		)	(3,426		)
Net cash (used in) provided by financing activities	(271,895		)	224,123
Net increase in cash and cash equivalents	49,361			240,470
Cash and cash equivalents at beginning of year	281,409			206,692
Cash and cash equivalents at end of year	$	330,770		$	447,162
Supplemental Disclosure of Non-Cash Investing and Financing Activities:
Issuance of common stock as deferred compensation	$	1,306		$	1,295
Issuance of units in the Operating Partnership	22,114			17,314
Redemption of units in the Operating Partnership	37,407			16,583
Derivative instruments at fair value	4,426			110
Exchange of debt investment for equity in joint venture	10,151			—
Transfer of restricted cash to operating cash and cash equivalents as a result of sale	21,578			—
Acquisition of subsidiary interest from noncontrolling interest	3,500			—
Tenant improvements and capital expenditures payable	17,664			9,898
Fair value adjustment to noncontrolling interest in the Operating Partnership	45,456			29,464
Transfer to net assets held for sale	—			63,925
Transfer to liabilities related to net assets held for sale	—			49,704
Transfer of financing receivable to debt investment	—			19,675
Deferred leasing payable	2,372			—
Issuance of preferred units	40,000			—

The accompanying notes are an integral part of these financial statements.

11

SL Green Operating Partnership, L.P.

Consolidated Balance Sheets

(in thousands, except per unit data)

	March 31, 2015			December 31, 2014
	(unaudited)
Assets
Commercial real estate properties, at cost:
Land and land interests	$	3,830,787		$	3,844,518
Building and improvements	8,697,145			8,778,593
Building leasehold and improvements	1,423,087			1,418,585
Property under capital lease	27,445			27,445
	13,978,464			14,069,141
Less: accumulated depreciation	(1,973,674		)	(1,905,165		)
	12,004,790			12,163,976
Assets held for sale	—			462,430
Cash and cash equivalents	330,770			281,409
Restricted cash	128,834			149,176
Investment in marketable securities	47,716			39,429
Tenant and other receivables, net of allowance of $18,047 and $18,068 in 2015 and 2014, respectively	50,156			57,369
Related party receivables	12,088			11,735
Deferred rents receivable, net of allowance of $26,480 and $27,411 in 2015 and 2014, respectively	408,229			374,944
Debt and preferred equity investments, net of discounts and deferred origination fees of $18,797 and $19,172 in 2015 and 2014, respectively	1,548,739			1,408,804
Investments in unconsolidated joint ventures	1,244,185			1,172,020
Deferred costs, net	326,555			327,962
Other assets	978,670			647,333
Total assets	$	17,080,732		$	17,096,587
Liabilities
Mortgages and other loans payable	$	5,359,043		$	5,586,709
Revolving credit facility	520,000			385,000
Term loan and senior unsecured notes	2,110,041			2,107,078
Accrued interest payable and other liabilities	162,910			137,634
Accounts payable and accrued expenses	151,427			173,246
Deferred revenue	369,626			187,148
Capitalized lease obligations	20,917			20,822
Deferred land leases payable	1,301			1,215
Dividend and distributions payable	65,868			64,393
Security deposits	66,427			66,614
Liabilities related to assets held for sale	—			266,873
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities	100,000			100,000
Total liabilities	8,927,560			9,096,732
Commitments and contingencies	—			—
Preferred units	110,915			71,115

12

SL Green Operating Partnership, L.P.

Consolidated Balance Sheets

(in thousands, except per unit data)

	March 31, 2015			December 31, 2014
	(unaudited)
Capital
SLGOP partners' capital:
Series I Preferred Units, $25.00 liquidation preference, 9,200 issued and outstanding at both March 31, 2015 and December 31, 2014	221,932			221,932
SL Green partners' capital (1,034 and 1,013 general partner common units and 98,499 and 96,312 limited partner common units outstanding at March 31, 2015 and December 31, 2014, respectively)	7,340,771			7,078,924
Limited partner interests in SLGOP (3,913and 3,973 limited partner common units outstanding at March 31, 2015 and December 31, 2014, respectively)	97,399			113,298
Accumulated other comprehensive loss	(12,286		)	(7,256		)
Total SLGOP partners' capital	7,647,816			7,406,898
Noncontrolling interests in other partnerships	394,441			521,842
Total capital	8,042,257			7,928,740
Total liabilities and capital	$	17,080,732		$	17,096,587

The accompanying notes are an integral part of these financial statements.

13

SL Green Operating Partnership, L.P.

Consolidated Statements of Income

(unaudited, in thousands, except per unit data)

	Three Months Ended March 31,
	2015			2014
Revenues
Rental revenue, net	$	303,329		$	255,976
Escalation and reimbursement	40,969			37,807
Investment income	42,069			54,084
Other income	9,932			14,578
Total revenues	396,299			362,445
Expenses
Operating expenses, including related party expenses of $3,808 and $3,513 in 2015 and 2014, respectively	76,777			69,909
Real estate taxes	55,723			52,350
Ground rent	8,188			8,033
Interest expense, net of interest income	75,807			76,178
Amortization of deferred financing costs	6,615			3,657
Depreciation and amortization	108,337			86,515
Transaction related costs	1,143			2,474
Marketing, general and administrative	25,464			23,257
Total expenses	358,054			322,373
Income from continuing operations before equity in net income from unconsolidated joint ventures, equity in net gain on sale of interest in unconsolidated joint venture/real estate and (loss) gain on early extinguishment of debt	38,245			40,072
Equity in net income from unconsolidated joint ventures	4,030			6,128
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—			104,640
(Loss) gain on early extinguishment of debt	(49		)	3
Income from continuing operations	42,226			150,843
Net income from discontinued operations	427			5,769
Gain on sale of discontinued operations	12,983			—
Net income	55,636			156,612
Net income attributable to noncontrolling interests in other partnerships	(5,927		)	(1,490		)
Preferred unit distributions	(951		)	(565		)
Net income attributable to SLGOP	48,758			154,557
Perpetual preferred unit distributions	(3,738		)	(3,738		)
Net income attributable to SLGOP common unitholders	$	45,020		$	150,819
Amounts attributable to SLGOP common unitholders:
Income from continuing operations before gains on sale and discontinued operations	$	31,610		$	40,410
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—			104,640
Net income from discontinued operations	427			5,769
Gain on sale of discontinued operations	12,983			—
Net income attributable toSLGOP common unitholders	$	45,020		$	150,819

14

SL Green Operating Partnership, L.P.

Consolidated Statements of Income

(unaudited, in thousands, except per unit data)

	Three Months Ended March 31,
	2015		2014
Basic earnings per unit:
Income from continuing operations before gains on sale and discontinued operations	$	0.31	$	0.41
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—		1.07
Net income from discontinued operations	—		0.06
Gain on sale of discontinued operations	0.13		—
Net income attributable to SLGOP common unitholders	$	0.44	$	1.54
Diluted earnings per unit:
Income from continuing operations before gains on sale and discontinued operations	$	0.31	$	0.41
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—		1.06
Net income from discontinued operations	—		0.06
Gain on sale of discontinued operations	0.13		—
Net income attributable to SLGOP common unitholders	$	0.44	$	1.53
Dividends per unit	$	0.60	$	0.50
Basic weighted average common units outstanding	102,366		98,196
Diluted weighted average common units and common unit equivalents outstanding	103,019		98,716

The accompanying notes are an integral part of these financial statements.

15

SL Green Operating Partnership, L.P.

Consolidated Statements of Comprehensive Income

(unaudited, in thousands)

	Three Months Ended March 31,
	2015			2014
Net income	$	55,636		$	156,612
Other comprehensive (loss) income:
Change in net unrealized (loss) gain on derivative instruments, including SLGOP's share of joint venture net unrealized (loss) gain on derivative instruments	(5,680		)	168
Change in unrealized gain on marketable securities	650			129
Other comprehensive (loss) income	(5,030		)	297
Comprehensive income	50,606			156,909
Net income attributable to noncontrolling interests	(5,927		)	(1,490		)
Comprehensive income attributable to SLGOP	$	44,679		$	155,419

The accompanying notes are an integral part of these financial statements.

16

SL Green Operating Partnership, L.P.

Consolidated Statement of Capital

(unaudited, in thousands, except per unit data)

	SL Green Operating Partnership Unitholders
				General Partner				Limited Partners
	Series I Preferred Units			Common Units	Common Unitholders			Common Units		Common Unitholders			Accumulated Other Comprehensive Loss			Noncontrolling Interests			Total
Balance at December 31, 2014	$	221,932		97,325	$	7,078,924		3,973		$	113,298		$	(7,256	)	$	521,842		$	7,928,740
Net income	3,738				43,277					1,743						5,927			54,685
Acquisition of subsidiary interest from noncontrolling interest					7,564											(11,084		)	(3,520		)
Other comprehensive loss													(5,030		)				(5,030		)
Preferred distributions	(3,738		)																(3,738		)
Issuance of common units								257		22,114									22,114
DRSPP proceeds				775	99,496														99,496
Conversion of units of the Operating Partnership to common stock				317	37,407			(317	)	(37,407		)							—
Reallocation of capital account relating to sale																(10,144		)	(10,144		)
Deferred compensation plan and stock award, net				26	(3,430		)												(3,430		)
Amortization of deferred compensation plan					6,239														6,239
Contribution to consolidated joint venture interest																—			—
Contributions - net proceeds from common stock offering				953	120,597														120,597
Contributions - proceeds from stock options exercised				137	10,344														10,344
Cash distributions to noncontrolling interests																(112,100		)	(112,100		)
Cash distributions declared ($0.60 per common unit, none of which represented a return of capital for federal income tax purposes)					(59,647		)			(2,349		)							(61,996		)
Balance at March 31, 2015	$	221,932		99,533	$	7,340,771		3,913		$	97,399		$	(12,286	)	$	394,441		$	8,042,257

The accompanying notes are an integral part of these financial statements.

17

SL Green Operating Partnership, L.P.

Consolidated Statements of Cash Flows

(unaudited, in thousands)

	Three Months Ended March 31,
	2015			2014
Operating Activities
Net income	$	55,636		$	156,612
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	114,955			93,680
Equity in net income from unconsolidated joint ventures	(4,030		)	(6,128		)
Distributions of cumulative earnings from unconsolidated joint ventures	15,489			7,669
Equity in net gain on sale of interest in unconsolidated joint venture interest/real estate	—			(104,640		)
Gain on sale of discontinued operations	(12,983		)	—
Loss (gain) on early extinguishment of debt	49			(3		)
Deferred rents receivable	(32,367		)	(11,133		)
Other non-cash adjustments	4,590			(12,792		)
Changes in operating assets and liabilities:
Restricted cash—operations	(1,652		)	(10,520		)
Tenant and other receivables	7,096			11,899
Related party receivables	(353		)	(11,885		)
Deferred lease costs	(11,017		)	(4,476		)
Other assets	(38,280		)	(32,949		)
Accounts payable, accrued expenses and other liabilities and security deposits	(20,230		)	(1,821		)
Deferred revenue and land leases payable	14,056			14,635
Net cash provided by operating activities	90,959			88,148
Investing Activities
Acquisitions of real estate property	(6,290		)	—
Additions to land, buildings and improvements	(47,117		)	(48,213		)
Escrowed cash—capital improvements/acquisition deposits	(3,084		)	(34,861		)
Investments in unconsolidated joint ventures	(83,772		)	(18,966		)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	45,546			72,558
Net proceeds from disposition of real estate/joint venture interest	485,540			109,196
Proceeds from sale of marketable securities	133			—
Purchases of marketable securities	(7,769		)	—
Other investments	(5,424		)	(1,573		)
Origination of debt and preferred equity investments	(174,420		)	(150,464		)
Repayments or redemption of debt and preferred equity investments	26,954			522
Net cash provided by (used in) investing activities	230,297			(71,801		)

18

SL Green Operating Partnership, L.P.

Consolidated Statements of Cash Flows

(unaudited, in thousands)

	Three Months Ended March 31,
	2015			2014
Financing Activities
Proceeds from mortgages and other loans payable	$	—		$	121,216
Repayments of mortgages and other loans payable	(481,608		)	(10,772		)
Proceeds from revolving credit facility, term loan and senior unsecured notes	665,000			603,000
Repayments of revolving credit facility, term loan and senior unsecured notes	(530,000		)	(440,690		)
Contributions of proceeds from stock options exercised and DRSSP issuance	109,840			8,992
Contributions of net proceeds from sale of common stock	120,597			24
Redemption of preferred units	(200		)	—
Distributions to noncontrolling interests in other partnerships	(110,867		)	(1,586		)
Contributions from noncontrolling interests in other partnerships	—			517
Distributions paid on common and preferred units	(65,252		)	(53,152		)
Other obligations related to mortgage loan participations	25,000			—
Deferred loan costs and capitalized lease obligation	(4,405		)	(3,426		)
Net cash (used in) provided by financing activities	(271,895		)	224,123
Net increase in cash and cash equivalents	49,361			240,470
Cash and cash equivalents at beginning of year	281,409			206,692
Cash and cash equivalents at end of year	$	330,770		$	447,162
Supplemental Disclosure of Non-Cash Investing and Financing Activities:
Issuance of common stock as deferred compensation	$	1,306		$	1,295
Issuance of units in the Operating Partnership	22,114			17,314
Redemption of units in the Operating Partnership	37,407			16,583
Derivative instruments at fair value	4,426			110
Exchange of debt investment for equity in joint venture	10,151			—
Transfer of restricted cash to operating cash and cash equivalents as a result of sale	21,578			—
Acquisition of subsidiary interest from noncontrolling interest	3,500			—
Tenant improvements and capital expenditures payable	17,664			9,898
Transfer to net assets held for sale	—			63,925
Transfer to liabilities related to net assets held for sale	—			49,704
Transfer of financing receivable to debt investment	—			19,675
Deferred leasing payable	2,372			—
Issuance of preferred units	40,000			—

The accompanying notes are an integral part of these financial statements.

19

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements

March 31, 2015

(unaudited)

1. Organization and Basis of Presentation

SL Green Realty Corp., which is referred to as the Company or SL Green, a Maryland corporation, and SL Green Operating Partnership, L.P., which is referred to as SLGOP or the Operating Partnership, a Delaware limited partnership, were formed in June 1997 for the purpose of combining the commercial real estate business of S.L. Green Properties, Inc. and its affiliated partnerships and entities. The Operating Partnership received a contribution of interest in the real estate properties, as well as 95% of the economic interest in the management, leasing and construction companies which are referred to as the Service Corporation, a consolidated variable interest entity. All of the management, leasing and construction services with respect to the properties that are wholly-owned by us are conducted through SL Green Management LLC which is 100% owned by the Operating Partnership. The Company has qualified, and expects to qualify in the current fiscal year, as a real estate investment trust, or REIT, under the Internal Revenue Code of 1986, as amended, or the Code, and operates as a self-administered, self-managed REIT. A REIT is a legal entity that holds real estate interests and, through payments of dividends to stockholders, is permitted to minimize the payment of Federal income taxes at the corporate level. Unless the context requires otherwise, all references to "we," "our" and "us" means the Company and all entities owned or controlled by the Company, including the Operating Partnership.

Substantially all of our assets are held by, and all of our operations are conducted through the Operating Partnership. The Company is the sole managing general partner of the Operating Partnership. As of March 31, 2015, noncontrolling investors held, in the aggregate, a 3.78% limited partnership interest in the Operating Partnership. We refer to these interests as the noncontrolling interests in the Operating Partnership. See Note 11, "Noncontrolling Interests on the Company's Consolidated Financial Statements."

Reckson Associates Realty Corp., or Reckson, and Reckson Operating Partnership, L.P., or ROP, are wholly-owned subsidiaries of the Operating Partnership.

As of March 31, 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, Long Island, Westchester County, Connecticut and New Jersey, which are collectively known as the Suburban properties:

		Consolidated			Unconsolidated		Total
Location	Type	Number of Properties		Approximate Square Feet	Number of Properties	Approximate Square Feet	Number of Properties	Approximate Square Feet	Weighted Average Occupancy(1)
Commercial:
Manhattan	Office	23		18,429,045	7	3,476,115	30	21,905,160	96.0	%
	Retail	9	(2)	403,735	7	279,628	16	683,363	90.7	%
	Development/Redevelopment	8		883,862	5	1,952,782	13	2,836,644	38.0	%
	Fee Interest	2		783,530	—	—	2	783,530	100.0	%
		42		20,500,172	19	5,708,525	61	26,208,697	89.7	%
Suburban	Office	27		4,365,400	4	1,222,100	31	5,587,500	80.8	%
	Retail	1		52,000	—	—	1	52,000	100.0	%
	Development/Redevelopment	2		86,000	2	65,641	4	151,641	57.5	%
		30		4,503,400	6	1,287,741	36	5,791,141	80.3	%
Total commercial properties		72		25,003,572	25	6,996,266	97	31,999,838	88.0	%
Residential:
Manhattan	Residential	3	(2)	735,587	17	2,046,733	20	2,782,320	96.8	%
Suburban	Residential	1		66,611	—	—	1	66,611	84.4	%
Total residential properties		4		802,198	17	2,046,733	21	2,848,931	96.4	%
Total portfolio		76		25,805,770	42	9,042,999	118	34,848,769	88.7	%

____________________________________________________________________

(1) The weighted average occupancy for commercial properties represents the total occupied 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.

20

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

(2) As of March 31, 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.

As of March 31, 2015, we also managed an approximately 336,201 square foot office building owned by a third party and held debt and preferred equity investments with a book value of $1.5 billion.

Partnership Agreement

In accordance with the partnership agreement of the Operating Partnership, or the Operating Partnership Agreement, we allocate all distributions and profits and losses in proportion to the percentage of ownership interests of the respective partners. As the managing general partner of the Operating Partnership, we are required to take such reasonable efforts, as determined by us in our sole discretion, to cause the Operating Partnership to distribute sufficient amounts to enable the payment of sufficient dividends by us to minimize any Federal income or excise tax at the Company level. Under the Operating Partnership Agreement, each limited partner has the right to redeem units of limited partnership interests for cash, or if we so elect, shares of SL Green's common stock on a one-for-one basis.

Basis of Quarterly Presentation

The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States 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 accounting principles generally accepted in the United States 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 and the Operating Partnership at March 31, 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 the Annual Report on Form 10-K for the year ended December 31, 2014 of the Company and the Operating Partnership.

The consolidated balance sheets at December 31, 2014 have been derived from the audited financial statements as of that date but do not include all the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

2. 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 debt and preferred equity investments. See Note 5, "Debt and Preferred Equity Investments" and Note 6, "Investments in Unconsolidated Joint Ventures." 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. Included in commercial real estate properties on our consolidated balance sheets as of March 31, 2015 and December 31, 2014 are $198.5 million and $198.4 million, respectively, related to our consolidated VIEs. Included in mortgages and other loans payable on our consolidated balance sheets as of March 31, 2015 and December 31, 2014 are $106.0 million and $106.5 million, respectively, related to our consolidated VIEs. Also, included in assets held for sale and liabilities related to assets held for sale on our consolidated balance sheets as of December 31, 2014 are $445.0 million of commercial real estate and $253.9 million of mortgage related to our consolidated VIEs.

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 equity 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 debt 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

21

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

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 do not believe that the values of any of our consolidated properties were other than temporarily impaired at March 31, 2015.

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 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 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 $14.3 million and $6.1 million in rental revenue for the three months ended March 31, 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. We recognized a reduction in interest expense for the amortization of the above-market rate mortgages assumed of $0.6 million and $1.5 million for the three months ended March 31, 2015 and 2014, respectively.

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

	March 31, 2015			December 31, 2014
Identified intangible assets (included in other assets):
Gross amount	$	968,763		$	664,297
Accumulated amortization	(408,884		)	(383,236		)
Net	$	559,879		$	281,061
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	847,326		$	655,755
Accumulated amortization	(506,578		)	(483,948		)
Net	$	340,748		$	171,807

Fair Value Measurements

See Note 17, "Fair Value Measurements."

22

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Investment in Marketable Securities

We invest in marketable securities. At the time of purchase, we are required to designate a security as held-to-maturity, available-for-sale, or trading depending on ability and intent. We do not have any securities designated as held-to-maturity or trading at March 31, 2015. Securities available-for-sale are reported at fair value pursuant to ASC 820-10, with the net unrealized gains or losses reported as a component of accumulated other comprehensive income or loss. Unrealized losses that are determined to be other-than-temporary are recognized in earnings up to their credit component.

The cost of bonds and marketable securities sold is determined using the specific identification method.

At March 31, 2015 and December 31, 2014, we held the following marketable securities (in thousands):

	March 31, 2015		December 31, 2014
Equity marketable securities	$	4,287	$	4,332
Mortgage-backed securities	43,429		35,097
Total marketable securities available-for-sale	$	47,716	$	39,429

The cost basis of the commercial mortgage-backed securities was $40.0 million and $32.4 million at March 31, 2015 and December 31, 2014, respectively. These securities mature at various times through 2049.

During the three months ended March 31, 2015, we disposed of marketable securities for aggregate net proceeds of $0.1 million. We did not sell any of our marketable securities during the three months ended March 31, 2014.

Investments in Unconsolidated Joint Ventures

We assess our investments in unconsolidated joint ventures for recoverability, and if it is determined that a loss in value of the investment is other than temporary, we write down the investment to its fair value. We evaluate our equity investments for impairment based on the joint venture's projected discounted cash flows. We do not believe that the values of any of our equity investments were impaired at March 31, 2015.

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 debt and 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

23

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

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 debt and 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 debt and 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 debt or 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 debt or preferred equity investment at a discount with the intention of foreclosing on the collateral, we do not accrete the discount. For debt 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.

Debt and 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 debt or preferred equity investment is resumed when such non-accrual debt or 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 statement of income. 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 debt and 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 three months ended March 31, 2015 and 2014.

24

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Debt and preferred equity investments held for sale are carried at the lower of cost or fair market value using available market information obtained through consultation with dealers or other originators of such investments as well as discounted cash flow models based on Level 3 data pursuant to ASC 820-10. As circumstances change, management may conclude not to sell an investment designated as held for sale. In such situations, the investment will be reclassified at its net carrying value to debt and preferred equity investments held to maturity. For these reclassified investments, the difference between the current carrying value and the expected cash to be collected at maturity will be accreted into income over the remaining term of the investment.

Income Taxes

SL Green is taxed as a REIT under Section 856(c) of the Code. As a REIT, SL Green generally is not subject to Federal income tax. To maintain its qualification as a REIT, SL Green must distribute at least 90% of its REIT taxable income to its stockholders and meet certain other requirements. If SL Green fails to qualify as a REIT in any taxable year, we will be subject to Federal income tax on SL Green's taxable income at regular corporate rates. SL Green may also be subject to certain state, local and franchise taxes. Under certain circumstances, Federal income and excise taxes may be due on SL Green's undistributed taxable income.

The Operating Partnership 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. The only provision for income taxes included in the consolidated statements of income relates to the Operating Partnership’s consolidated taxable REIT subsidiaries. The Operating Partnership may also be subject to certain state, local and franchise taxes.

Pursuant to amendments to the Code that became effective January 1, 2001, we have elected, and may elect in the future, to treat certain of our existing or newly created corporate subsidiaries as taxable REIT subsidiaries, or TRSs. In general, TRSs may perform non-customary services for the tenants of the Company, hold assets that we cannot hold directly and generally may engage in any real estate or non-real estate related business. The TRSs generate income, resulting in Federal and state income tax liability for these entities.

During the three months ended March 31, 2015 and 2014, we recorded Federal, state and local tax provisions of $0.3 millionand $2.9 million, respectively.

We follow a two-step approach for evaluating uncertain tax positions. Recognition (step one) occurs when an enterprise concludes that a tax position, based solely on its technical merits, is more-likely-than-not to be sustained upon examination. Measurement (step two) determines the amount of benefit that is more-likely-than-not to be realized upon settlement. Derecognition of a tax position that was previously recognized would occur when a company subsequently determines that a tax position no longer meets the more-likely-than-not threshold of being sustained. The use of a valuation allowance as a substitute for derecognition of tax positions is prohibited.

Stock-Based Employee Compensation Plans

We have a stock-based employee compensation plan, described more fully in Note 14, "Share-based Compensation."

The Company's stock options are recorded at fair value at the time of issuance. Fair value of the stock options is determined using the Black-Scholes option pricing model. The Black-Scholes model was developed for use in estimating the fair value of traded options, which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility. Because our plan has characteristics significantly different from those of traded options and because changes in the subjective input assumptions can materially affect the fair value estimate, in our opinion, the existing models do not necessarily provide a reliable single measure of the fair value of the employee stock options.

Compensation cost for stock options, if any, is recognized over the vesting period of the award. Our policy is to grant options with an exercise price equal to the quoted closing market price of the Company's common stock on the grant date. Awards of stock or restricted stock are expensed as compensation over the benefit period based on the fair value of the stock on the grant date.

For share-based awards with a performance or market measure, we recognize compensation cost over the requisite service period, using the accelerated attribution expense method. The requisite service period begins on the date the compensation committee of SL Green's board of directors authorizes the award, adopts any relevant performance measures and communicates the award to the employees. For programs with awards that vest based on the achievement of a performance condition or market condition, we determine whether it is probable that the performance condition will be met, and estimate compensation cost based on the fair value of the award at the applicable reporting date estimated using a binomial model or market quotes. For share-based awards for which there is no pre-established performance measure, we recognize compensation cost over the service vesting period, which represents the requisite service period, on a straight-line basis. In accordance with the provisions of our share-based incentive

25

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

compensation plans, we accept the return of shares of the Company's common stock, at the current quoted market price, from certain key employees to satisfy minimum statutory tax-withholding requirements related to shares that vested during the period.

Awards can also be made in the form of a separate series of units of limited partnership interest in the Operating Partnership called long-term incentive plan units, or LTIP units. LTIP units, which can be granted either as free-standing awards or in tandem with other awards under our stock incentive plan, are valued by reference to the value of the Company's common stock at the time of grant, and are subject to such conditions and restrictions as the compensation committee of the Company's board of directors may determine, including continued employment or service, computation of financial metrics and/or achievement of pre-established performance goals and objectives.

Earnings per Share of the Company

The Company presents both basic and diluted earnings per share, or EPS. Basic EPS excludes dilution and is computed by dividing net income attributable to common stockholders by the weighted average number of common shares outstanding during the period. Basic EPS includes participating securities, consisting of unvested restricted stock that receive nonforfeitable dividends similar to shares of common stock. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock, where such exercise or conversion would result in a lower EPS amount. Diluted EPS also includes units of limited partnership interest. The dilutive effect of stock options is reflected in the weighted average diluted outstanding shares calculation by application of the treasury stock method. There is no dilutive effect for the exchangeable senior notes as the conversion premium will be paid in cash.

Earnings per Unit of the Operating Partnership

The Operating Partnership presents both basic and diluted earnings per unit, or EPU.  Basic EPU excludes dilution and is computed by dividing net income attributable to common unitholders by the weighted average number of common units outstanding during the period. Basic EPU includes participating securities, consisting of unvested restricted units that receive nonforfeitable dividends similar to shares of common units. Diluted EPU reflects the potential dilution that could occur if securities or other contracts to issue common units were exercised or converted into common units, where such exercise or conversion would result in a lower EPU amount. The dilutive effect of unit options is reflected in the weighted average diluted outstanding units calculation by application of the treasury stock method. There is no dilutive effect for the exchangeable senior notes as the conversion premium will be paid in cash.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States 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.

Concentrations of Credit Risk

Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash investments, debt and 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 debt and preferred equity investments is located in New York City. See Note 5, "Debt and Preferred Equity 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, Long Island, Westchester County, Connecticut and New Jersey. The tenants located in our buildings operate in various industries. Other than three tenants who account for 10.7%, 7.1% and 5.4% of our share of annualized cash rent, respectively, no other tenant in our portfolio accounted for more than 2.1% of our share of annualized cash rent, including our share of joint venture annualized rent, at March 31, 2015. For the three months ended March 31, 2015, 10.1%, 9.7%, 7.7% and 7.4% of our annualized cash rent for consolidated properties was attributable to 1515 Broadway, 388-390 Greenwich Street, 1185 Avenue of the Americas and 919 Third Avenue, respectively.

Reclassification

Certain prior year balances have been reclassified to conform to our current year presentation primarily in order to eliminate discontinued operations from income from continuing operations.

26

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

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 (Accounting Standards Update, or 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 June 2014, the FASB issued final guidance that requires repurchase-to-maturity transactions to be accounted for as secured borrowings as if the transferor retains effective control, even though the transferred financial assets are not returned to the transferor at settlement and also eliminates existing guidance for repurchase financings (ASU, No. 2014-11). New disclosures are required for (1) certain transactions accounted for as secured borrowings and (2) transfers accounted for as sales when the transferor also retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction. The guidance is effective for the first interim or annual period beginning after December 15, 2014, except for the disclosures related to transactions accounted for as secured borrowings, which are effective for periods beginning after March 15, 2015. Early adoption of this guidance is prohibited. The Company has adopted the standard beginning in the first quarter of 2015. The adoption of this guidance did not have a material impact on our consolidated financial statements. The Company will adopt the presentation and disclosures related to transactions accounted for as secured borrowings during the second quarter of 2015.

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. 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 will change the presentation of discontinued operations for all properties held for sale and/or disposed of subsequent to January 1, 2015.

27

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

3. Property Acquisitions

2015 Acquisitions

During the three months ended March 31, 2015, the property listed below was acquired from a third party. The following summarizes our preliminary allocation of the purchase price of the assets acquired and liabilities assumed upon the closing of this acquisition (in thousands):

	1640 Flatbush Avenue(1)
Acquisition Date	March 2015
Ownership Type	Fee Interest
Property Type	Retail
Purchase Price Allocation:
Land	$	6,120
Building and building leasehold	680
Above-market lease value	—
Acquired in-place leases	—
Other assets, net of other liabilities	—
Assets acquired	6,800
Mark-to-market assumed debt	—
Below-market lease value	—
Derivatives	—
Liabilities assumed	—
Purchase price	$	6,800
Net consideration funded by us at closing, excluding consideration financed by debt	$	6,800
Equity and/or debt investment held	$	—
Debt assumed	$	—

____________________________________________________________________

(1) We are currently in the process of analyzing the purchase price allocation and, as such, we have not allocated any value to intangible assets such as above- and below-market lease or in-place leases.

28

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

2014 Acquisitions

During the three months ended March 31, 2015, we finalized the purchase price allocations based on third party appraisal and additional facts and circumstances that existed at the acquisition dates for the following 2014 acquisitions (in thousands):

	719 Seventh Avenue(1)(2)		115 Spring Street(1)		388-390 Greenwich Street(1)(3)
Acquisition Date	July 2014		July 2014		May 2014
Ownership Type	Fee Interest		Fee Interest		Fee Interest
Property Type	Development		Retail		Office
Purchase Price Allocation:
Land	$	41,850	$	11,078	$	516,292
Building and building leasehold	—		44,799		964,434
Above-market lease value	—		—		—
Acquired in-place leases	—		2,037		302,430
Other assets, net of other liabilities	—		—		6,495
Assets acquired	41,850		57,914		1,789,651
Mark-to-market assumed debt	—		—		—
Below-market lease value	—		4,789		186,782
Derivatives	—		—		18,001
Liabilities assumed	—		4,789		204,783
Purchase price	$	41,850	$	53,125	$	1,584,868
Net consideration funded by us at closing, excluding consideration financed by debt	$	41,850	$	53,125	$	208,614
Equity and/or debt investment held	$	—	$	—	$	148,025
Debt assumed	$	—	$	—	$	1,162,379

____________________________________________________________________

(1) Based on our preliminary analysis of the purchase price, we had allocated $14.4 million and $26.7 million to land and building, respectively, at 719 Seventh Avenue, $15.9 million and $37.2 million to land and building, respectively, at 115 Spring Street and $558.7 million and $1.0 billion to land and building, respectively, at 388-390 Greenwich. The impact to our consolidated statement of income for the three months ended March 31, 2015 was $6.7 million in rental revenue for the amortization of aggregate below-market leases and $10.1 million of depreciation expense.

(2) We, along with our joint venture partner, acquired this property for consideration that included the issuance of $14.1 million aggregate liquidation preference of Series L Preferred Units of limited partnership interest of the Operating Partnership and $9.5 million aggregate liquidation preference of Series K Preferred Units of limited partnership interest of the Operating Partnership. We hold a 75.0% controlling interest in this joint venture.

(3) In May 2014, we acquired Ivanhoe Cambridge, Inc.'s 49.65% economic interest in this property, thereby consolidating full ownership of the property. The transaction valued the consolidated interests at $1.585 billion. Simultaneous with the closing, we refinanced the previous mortgage with a $1.45 billion mortgage. We also assumed the existing derivative instruments, which swapped $504.0 million of the mortgage to fixed rate. We recognized a purchase price fair value adjustment of $71.4 million upon closing of this transaction. This property, which we initially acquired in December 2007, was previously accounted for as an investment in unconsolidated joint ventures.

29

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

For business combinations achieved in stages, the acquisition-date fair value of our equity interest in a property immediately before the acquisition date is determined based on estimated cash flow projections that utilize available market information and discount and capitalization rates that we deem appropriate. Estimates of future cash flows are based on a number of factors including historical operating results, known and anticipated trends, and market and economic conditions. The acquisition-date fair value of the equity interest in 388-390 Greenwich Street immediately before the acquisition date as well as the purchase price fair value, as determined in accordance with the methodology set out in the prior sentence, is as follows (in thousands):

	388-390 Greenwich Street
Contract purchase price	$	1,585,000
Net consideration funded by us at closing, excluding consideration financed by debt	(208,614		)
Debt assumed	(1,162,379		)
Fair value of retained equity interest	214,007
Equity and/or debt investment held	(148,025		)
Other(1)	5,464
Purchase price fair value adjustment	$	71,446

___________________________________________________________________

(1) Includes the acceleration of a deferred leasing commission from the joint venture to the Company.

4. Property Dispositions

The following table summarizes the properties sold during the three months ended March 31, 2015:

Property	Disposition Date	Property Type	Approximate Usable Square Feet	Sales Price (in millions)		Gain on Sale(1) (in millions)
180 Maiden Lane	January 2015	Office	1,090,000	$	470.0	$	17.0

____________________________________________________________________

(1) The gain on sale for 180 Maiden Lane is net of a $0.8 million employee compensation award accrued in connection with the realization of this investment gain as a bonus to certain employees that were instrumental in realizing the gain on sale. Additionally, amounts do not include adjustments for expense recorded in subsequent periods.

30

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Discontinued Operations

Discontinued operations included the results of operations of real estate assets sold prior to March 31, 2015. This included 180 Maiden Lane, which was sold in January 2015, 2 Herald Square, 985-987 Third Avenue and 673 First Avenue, which were sold during 2014.

The following table summarizes net income from discontinued operations for the three months ended March 31, 2015 and 2014, respectively (in thousands):

	Three Months Ended March 31,
	2015			2014
Revenues
Rental revenue	$	236		$	21,180
Escalation and reimbursement revenues	(127		)	3,397
Other income	—			3
Total revenues	109			24,580
Operating expenses	(631		)	4,461
Real estate taxes	250			3,985
Ground rent	—			2,196
Interest expense, net of interest income	109			4,661
Transaction related costs	(49		)	—
Depreciation and amortization	—			3,297
Amortization of deferred financing costs	3			211
Total expenses	(318		)	18,811
Net income from discontinued operations	$	427		$	5,769

5. Debt and Preferred Equity Investments

During the three months ended March 31, 2015 and 2014, our debt and preferred equity investments (net of discounts and deferred origination fees) increased $166.9 million and $189.4 million, respectively, due to originations, purchases, advances under future funding obligations, accretion of reserves, discount amortization, and paid-in-kind interest, net of premium amortization. We recorded repayments, participations and sales of $27.0 million and $0.5 million during the three months ended March 31, 2015 and 2014, respectively, which offset the increases in debt and preferred equity investments.

Debt Investments

As of March 31, 2015 and December 31, 2014, we held the following debt investments with an aggregate weighted average current yield of 10.27% at March 31, 2015 (in thousands):

Loan Type	March 31, 2015 Future Funding Obligations		March 31, 2015 Senior Financing		March 31, 2015 Carrying Value (1)		December 31, 2014 Carrying Value (1)		Initial Maturity Date
Fixed Rate Investments:
Jr. Mortgage Participation /Mezzanine Loan	$	—	$	205,000	$	71,291	$	70,688	February 2016
Jr. Mortgage Participation/Mezzanine Loan(2)(3)	—		—		45,863		45,611		Various(2)
Jr. Mortgage Participation	—		133,000		49,000		49,000		June 2016
Mezzanine Loan	—		165,000		71,721		71,656		November 2016
Jr. Mortgage Participation/Mezzanine Loan	—		1,109,000		100,758		98,934		March 2017
Mezzanine Loan(3)	—		—		65,868		65,770		March 2017

Loan Type	March 31, 2015 Future Funding Obligations		March 31, 2015 Senior Financing		March 31, 2015 Carrying Value (1)		December 31, 2014 Carrying Value (1)		Initial Maturity Date
Mezzanine Loan(4)	10,787		502,100		30,264		24,608		June 2017
Mezzanine Loan	—		539,000		49,622		49,629		July 2018
Mortgage Loan(5)	—		—		26,222		26,209		February 2019
Mortgage Loan	—		—		607		637		August 2019
Mezzanine Loan	—		15,000		3,500		3,500		September 2021
Mezzanine Loan(6)	—		90,000		19,932		19,930		November 2023
Mezzanine Loan	—		95,000		30,000		30,000		January 2025
Mezzanine Loan(7)	—		—		—		14,068
Jr. Mortgage Participation(8)	—		—		—		11,934
Total fixed rate	$	10,787	$	2,853,100	$	564,648	$	582,174
Floating Rate Investments:
Mezzanine Loan(9)	611		50,000		44,647		37,322		April 2015
Mortgage/Mezzanine Loan	—		—		109,802		109,527		June 2015
Mezzanine Loan	—		110,000		49,745		49,614		September 2015
Mezzanine Loan	—		775,000		73,699		73,402		March 2016
Mezzanine Loan(10)	—		160,000		22,586		22,573		June 2016
Mezzanine Loan	—		115,000		24,911		24,910		July 2016
Mezzanine Loan(11)	514		172,105		36,917		33,726		November 2016
Mezzanine Loan	—		360,000		99,144		99,023		November 2016
Mezzanine Loan(12)	17,104		117,202		43,906		42,750		December 2016
Mezzanine Loan	2,120		33,915		11,855		11,835		December 2016
Mortgage/Mezzanine Loan(13)	78,975		—		111,613		—		January 2017
Mezzanine Loan	8,781		92,294		20,955		20,651		January 2017
Jr. Mortgage Participation/Mezzanine Loan	2,522		112,393		38,905		38,524		July 2017
Mortgage/Mezzanine Loan	—		—		22,822		22,803		July 2017
Mortgage/Mezzanine Loan	—		—		16,861		16,848		September 2017
Mezzanine Loan	—		60,000		14,869		14,859		November 2017
Mortgage/Mezzanine Loan(14)	795		—		14,868		14,845		December 2017
Jr. Mortgage Participation/Mezzanine Loan	—		55,000		20,528		20,533		July 2018
Mortgage/Mezzanine Loan	—		—		18,159		18,083		February 2019
Mezzanine Loan	—		38,000		21,816		21,807		March 2019
Total floating rate	$	111,422	$	2,250,909	$	818,608	$	693,635
Total	$	122,209	$	5,104,009	$	1,383,256	$	1,275,809

____________________________________________________________________

(1) Carrying value is net of discounts, premiums, original issue discounts and deferred origination fees.

(2) The $22.8 million junior mortgage participation and $23.1 million mezzanine loan mature in February 2016 and May 2016, respectively.

(3) These loans are collateralized by defeasance securities.

(4) Carrying value is net of $41.3 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(5) In September 2014, we acquired a $26.4 million mortgage loan at a $0.2 million discount and a $5.7 million junior mortgage participation at a $5.7 million discount. The junior mortgage participation was a nonperforming loan at acquisition and is currently on non-accrual status.

(6) Carrying value is net of $5.0 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(7) This loan was repaid in February 2015.

(8) This loan was repaid in March 2015.

(9) This loan was repaid in April 2015.

31

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

(10) Carrying value is net of $7.4 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(11) This loan was repaid in April 2015.

(12) In February 2015, the maturity date was extended to December 2016.

(13) Carrying value is net of $25.0 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(14) Carrying value is net of $5.1 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

Preferred Equity Investments

As of March 31, 2015 and 2014, we held the following preferred equity investments with an aggregate weighted average current yield of 10.20% at March 31, 2015 (in thousands):

Type	March 31, 2015 Future Funding Obligations		March 31, 2015 Senior Financing		March 31, 2015 Carrying Value (1)		December 31, 2014 Carrying Value (1)		Initial Mandatory Redemption
Preferred equity(2)	$	—	$	550,000	$	124,907	$	123,041	July 2015
Preferred equity(3)	—		70,000		9,957		9,954		March 2018
Preferred equity	7,100		60,795		30,619		—		November 2018
	$	7,100	$	680,795	$	165,483	$	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) In March 2015, the maturity date was extended to March 2018.

At March 31, 2015 and December 31, 2014, all debt and preferred equity investments were performing in accordance with the terms of the relevant investments, with the exception of a junior mortgage participation acquired in September 2014, which has a carrying value of zero.

We have determined that we have one portfolio segment of financing receivables at March 31, 2015 and December 31, 2014 comprising commercial real estate which is primarily recorded in debt and preferred equity investments. Included in other assets is an additional amount of financing receivables totaling $122.3 million and $133.5 million at March 31, 2015 and December 31, 2014, respectively. No financing receivables were 90 days past due at March 31, 2015.

6. Investments in Unconsolidated Joint Ventures

We have investments in several real estate joint ventures with various partners. As of March 31, 2015 and December 31, 2014, 650 Fifth Avenue, 33 Beekman, and 3 Columbus Circle were VIEs in which we are not the primary beneficiary. Our net equity investment in these VIEs was $97.9 million and $146.2 million at March 31, 2015 and December 31, 2014, respectively. All other investments below are voting interest entities. As we do not control the joint ventures listed below, we account for them under the equity method of accounting.

The table below provides general information on each of our joint ventures as of March 31, 2015:

Property	Partner	Ownership Interest	Economic Interest	Approximate Square Feet	Acquisition Date	Acquisition Price(1) (in thousands)
100 Park Avenue	Prudential Real Estate Investors	49.90%	49.90%	834,000	January 2000	$	95,800
717 Fifth Avenue	Jeff Sutton/Private Investor	10.92%	10.92%	119,500	September 2006	251,900
800 Third Avenue(2)	Private Investors	60.52%	60.52%	526,000	December 2006	285,000
1745 Broadway	Ivanhoe Cambridge, Inc.	56.88%	56.88%	674,000	April 2007	520,000
Jericho Plaza	Onyx Equities/Credit Suisse	20.26%	20.26%	640,000	April 2007	210,000
The Meadows	Onyx Equities	50.00%	50.00%	582,100	September 2007	111,500
600 Lexington Avenue	Canadian Pension Plan Investment Board	55.00%	55.00%	303,515	May 2010	193,000

32

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Property	Partner	Ownership Interest	Economic Interest	Approximate Square Feet	Acquisition Date	Acquisition Price(1) (in thousands)
11 West 34th Street	Private Investor/ Jeff Sutton	30.00%	30.00%	17,150	December 2010	10,800
7 Renaissance	Louis Cappelli	50.00%	50.00%	65,641	December 2010	4,000
3 Columbus Circle(3)	The Moinian Group	48.90%	48.90%	741,500	January 2011	500,000
280 Park Avenue	Vornado Realty Trust	50.00%	50.00%	1,219,158	March 2011	400,000
1552-1560 Broadway(4)	Jeff Sutton	50.00%	50.00%	35,897	August 2011	136,550
724 Fifth Avenue	Jeff Sutton	50.00%	50.00%	65,040	January 2012	223,000
10 East 53rd Street	Canadian Pension Plan Investment Board	55.00%	55.00%	354,300	February 2012	252,500
33 Beekman(5)	Harel Insurance and Finance/TNG 33 LLC	45.90%	45.90%	—	August 2012	31,000
521 Fifth Avenue	Plaza Global Real Estate Partners LP	50.50%	50.50%	460,000	November 2012	315,000
21 East 66th Street(6)	Private Investors	32.28%	32.28%	16,736	December 2012	75,000
315 West 36th Street	Private Investors	35.50%	35.50%	147,619	December 2012	45,000
650 Fifth Avenue(7)	Jeff Sutton	50.00%	50.00%	32,324	November 2013	—
121 Greene Street	Jeff Sutton	50.00%	50.00%	7,131	September 2014	27,400
175-225 Third Street	KCLW 3rd Street LLC/LIVWRK LLC	95.00%	95.00%	—	October 2014	74,600
55 West 46th Street	Prudential Real Estate Investors	25.00%	25.00%	347,000	November 2014	295,000
Stonehenge Portfolio(8)	Various	Various	Various	2,046,733	February 2015	36,668

____________________________________________________________________

(1) Acquisition price represents the actual or implied gross purchase price for the joint venture.

(2) In March 2015, we acquired an additional 17.56% interest in this joint venture for $67.5 million.

(3) As a result of the sale of a condominium interest in September 2012, Young & Rubicam, Inc., or Y&R, owns a portion of the property, floors three through eight referred to as Y&R units. Because the joint venture has an option to repurchase the Y&R units, the gain associated with this sale was deferred.

(4) The purchase price represents only the purchase of the 1552 Broadway interest which comprised approximately 13,045 square feet. The joint venture also owns a long-term leasehold interest in the retail space and certain other spaces at 1560 Broadway, which is adjacent to 1552 Broadway.

(5) The property is currently being developed into a 30-story dormitory building, which will be conveyed to Pace University upon its completion under a long-term ground lease arrangement.

(6) We hold a 32.28% interest in three retail and two residential units at the property and a 16.14% interest in three residential units at the property.

(7) The joint venture owns a long-term leasehold interest in the retail space at 650 Fifth Avenue. In connection with the ground lease obligation, SLG provided a performance guaranty and our joint venture partner executed a contribution agreement to reflect its pro rata obligation. In the event the property is converted into a condominium unit and the landlord elects the purchase option, the joint venture shall be obligated to acquire the unit at the then fair value.

(8) In February 2015, we acquired an interest in a portfolio of Manhattan residential and retail properties for $40.2 million, of which $3.5 million represented an increase in ownership interest in six of our existing consolidated joint venture properties.  The $40.2 million of consideration included the issuance of $40.0 million aggregate liquidation preference of 3.75% Series M Preferred Units of limited partnership interest of the Operating Partnership.

Acquisition, Development and Construction Arrangements

Based on the characteristics of the following arrangements, which are similar to those of an investment, combined with the expected residual profit of not greater than 50%, we have accounted for these debt and preferred equity investments under the equity method. As of March 31, 2015 and December 31, 2014, the carrying value for acquisition, development and construction arrangements were as follows (in thousands):

Loan Type	March 31, 2015		December 31, 2014		Initial Maturity Date
Mezzanine loan and preferred equity	$	99,702	$	99,629	March 2016
Mezzanine loan(1)	45,964		46,246		February 2022
	$	145,666	$	145,875

____________________________________________________________________

(1) We have an option to convert our loan to equity interest subject to certain conditions. In addition, we have determined that our option to convert the loan to equity is not a derivative financial instrument pursuant to Generally Accepted Accounting Principles, or GAAP. As such, the embedded feature is not required to be bifurcated and the fair value accounting for the embedded feature at each reporting date is not applicable.

33

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Mortgages and Other Loans Payable

We generally finance our joint ventures with non-recourse debt. However, in certain cases we have provided guarantees or master leases for tenant space. These guarantees and master leases terminate upon the satisfaction of specified circumstances or repayment of the underlying loans. The first mortgage notes and other loans payable collateralized by the respective joint venture properties and assignment of leases at March 31, 2015 and December 31, 2014, respectively, are as follows (amounts in thousands):

Property	Maturity Date	Interest Rate(1)		March 31, 2015		December 31, 2014
Fixed Rate Debt:
7 Renaissance	December 2015	10.00	%	$	2,147	$	2,147
11 West 34th Street	January 2016	4.82	%	16,825		16,905
280 Park Avenue	June 2016	6.57	%	698,249		700,171
1745 Broadway	January 2017	5.68	%	340,000		340,000
Jericho Plaza	May 2017	5.65	%	163,750		163,750
800 Third Avenue	August 2017	6.00	%	20,910		20,910
315 West 36th Street	December 2017	3.16	%	25,000		25,000
521 Fifth Avenue	November 2019	3.73	%	170,000		170,000
717 Fifth Avenue(2)	July 2022	4.45	%	300,000		300,000
21 East 66th Street	April 2023	3.60	%	12,000		12,000
717 Fifth Avenue(2)	July 2024	9.00	%	317,126		314,381
3 Columbus Circle(3)	March 2025	2.83	%	350,000		—
Stonehenge Portfolio(4)	Various	4.18	%	435,416		—
Total fixed rate debt				$	2,851,423	$	2,065,264
Floating Rate Debt:
The Meadows	September 2015	7.75	%	67,350		67,350
1552 Broadway(5)	April 2016	4.29	%	188,409		184,210
Other loan payable	June 2016	1.08	%	30,000		30,000
650 Fifth Avenue(6)	October 2016	3.68	%	65,000		65,000
175-225 Third Street	December 2016	4.25	%	40,000		40,000
10 East 53rd Street	February 2017	2.68	%	125,000		125,000
724 Fifth Avenue	April 2017	2.60	%	275,000		275,000
33 Beekman(7)	August 2017	2.93	%	59,370		52,283
600 Lexington Avenue	October 2017	2.26	%	115,758		116,740
55 West 46th Street(8)	October 2017	2.48	%	150,000		150,000
Stonehenge Portfolio	December 2017	3.25	%	10,500		—
121 Greene Street	November 2019	1.68	%	15,000		15,000
100 Park Avenue	February 2021	1.93	%	360,000		360,000
21 East 66th Street	June 2033	2.88	%	1,864		1,883
3 Columbus Circle(3)				—		230,974
Total floating rate debt				$	1,503,251	$	1,713,440
Total joint venture mortgages and other loans payable				$	4,354,674	$	3,778,704

____________________________________________________________________

(1) Effective weighted average interest rate for the three months endedMarch 31, 2015, taking into account interest rate hedges in effect during the period.

(2) These loans are comprised of a $300.0 million fixed rate mortgage loan and $290.0 million mezzanine loan. The mezzanine loan is subject to accretion based on the difference between contractual interest rate and contractual pay rate.

(3) In March 2015, the joint venture refinanced the previous mortgage and incurred a net loss on early extinguishment of debt of $0.8 million.

(4) Amount is comprised of $13.5 million, $56.3 million, $35.0 million, $7.4 million, $143.3 million, and $179.9 million in fixed-rate mortgages that mature in July 2016, June 2017, November 2017, February 2018, August 2019, and June 2024, respectively.

(5) These loans are comprised of a $150.0 million mortgage loan and a $41.5 million mezzanine loan. As of March 31, 2015, $1.7 million of the mortgage loan and $1.4 million of the mezzanine loan was unfunded.

34

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

(6) This loan has a committed amount of $97.0 million, of which $32.0 million was unfunded as of March 31, 2015.

(7) This loan has a committed amount of $75.0 million, of which $18.4 million is recourse to us. Our partner has indemnified us for its pro rata share of the recourse guarantee. A portion of the guarantee terminates upon the joint venture reaching certain milestones. We believe it is unlikely that we will be required to perform under this guarantee.

(8) This loan has a committed amount of $190.0 million, of which $40.0 million was unfunded as of March 31, 2015.

We act as the operating partner and day-to-day manager for all our joint ventures, except for 800 Third Avenue, Jericho Plaza, 280 Park Avenue, 3 Columbus Circle, The Meadows, 315 West 36th Street, 21 East 66th Street, 175-225 Third Street and the Stonehenge Portfolio. We are entitled to receive fees for providing management, leasing, construction supervision and asset management services to certain of our joint ventures. We earned $2.8 million and $6.3 million from these services for the three months ended March 31, 2015 and 2014, respectively. In addition, we have the ability to earn incentive fees based on the ultimate financial performance of certain of the joint venture properties.

The combined balance sheets for the unconsolidated joint ventures, at March 31, 2015 and December 31, 2014, are as follows (in thousands):

	March 31, 2015		December 31, 2014
Assets
Commercial real estate property, net	$	6,104,572	$	5,275,632
Other assets	919,848		810,567
Total assets	$	7,024,420	$	6,086,199
Liabilities and members' equity
Mortgages and other loans payable	$	4,354,674	$	3,778,704
Other liabilities	506,768		485,572
Members' equity	2,162,978		1,821,923
Total liabilities and members' equity	$	7,024,420	$	6,086,199
Company's investments in unconsolidated joint ventures	$	1,244,185	$	1,172,020

The combined statements of income for the unconsolidated joint ventures, from acquisition date through the three months ended March 31, 2015 and 2014 are as follows (in thousands):

	Three Months Ended March 31,
	2015			2014
Total revenues	$	128,916		$	161,138
Operating expenses	25,486			26,683
Ground rent	2,592			2,025
Real estate taxes	19,376			16,936
Interest expense, net of interest income	44,007			52,336
Amortization of deferred financing costs	3,010			4,633
Transaction related costs	8			271
Depreciation and amortization	32,984			45,604
Total expenses	127,463			148,488
Loss on early extinguishment of debt	(833		)	(3,197		)
Net income (loss) before gain on sale	$	620		$	9,453
Company's equity in net income from unconsolidated joint ventures	$	4,030		$	6,128

35

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

7. Deferred Costs

Deferred costs at March 31, 2015 and 2014 consisted of the following (in thousands):

	March 31, 2015			December 31, 2014
Deferred leasing	$	389,935		$	385,555
Deferred financing	195,474			193,776
	585,409			579,331
Less accumulated amortization	(258,854		)	(251,369		)
Deferred costs, net	$	326,555		$	327,962

8. Mortgages and Other Loans Payable

The first mortgages and other loans payable collateralized by the respective properties and assignment of leases at March 31, 2015 and December 31, 2014, respectively, were as follows (amounts in thousands):

Property	Maturity Date	Interest Rate(1)		March 31, 2015		December 31, 2014
Fixed Rate Debt:
500 West Putnam Avenue	January 2016	5.52	%	$	22,823	$	22,968
Landmark Square	December 2016	4.00	%	80,848		81,269
485 Lexington Avenue	February 2017	5.61	%	450,000		450,000
120 West 45th Street	February 2017	6.12	%	170,000		170,000
762 Madison Avenue(2)	February 2017	3.81	%	8,001		8,045
885 Third Avenue	July 2017	6.26	%	267,650		267,650
1745 Broadway	June 2018	4.81	%	16,000		16,000
388-390 Greenwich Street(3)	June 2018	3.25	%	1,004,000		1,004,000
One Madison Avenue	May 2020	5.91	%	560,025		565,742
100 Church Street	July 2022	4.68	%	227,713		228,612
919 Third Avenue(4)	June 2023	5.12	%	500,000		500,000
400 East 57th Street	February 2024	4.13	%	68,588		68,896
400 East 58th Street	February 2024	4.13	%	29,395		29,527
420 Lexington Avenue	October 2024	3.99	%	300,000		300,000
1515 Broadway	March 2025	3.93	%	900,000		900,000
Series J Preferred Units(5)	April 2051	3.75	%	4,000		4,000
711 Third Avenue(6)				—		120,000
Total fixed rate debt				$	4,609,043	$	4,736,709
Floating Rate Debt:
Master repurchase agreement(7)	December 2015	3.43	%	—		100,000
388-390 Greenwich Street(3)	June 2018	1.93	%	446,000		446,000
248-252 Bedford Avenue	June 2019	1.68	%	29,000		29,000
220 East 42nd Street	October 2020	1.78	%	275,000		275,000
180 Maiden Lane(8)				—		253,942
Total floating rate debt				$	750,000	$	1,103,942
Total mortgages and other loans payable				$	5,359,043	$	5,840,651

____________________________________________________________________

(1) Effective weighted average interest rate for the three months ended March 31, 2015, taking into account interest rate hedges in effect during the period.

(2) In February 2015, we entered into a new swap agreement with a fixed interest rate of 3.86% per annum, which replaced the previous swap agreement with a fixed interest rate of 3.75% per annum.

(3) In connection with the acquisition of our joint venture partner's interest, we assumed the existing derivative instruments, which swapped $504.0 million of the mortgage to a fixed rate mortgage which bears interest at 3.80% per annum. In October 2014, we entered into multiple swap agreements to hedge our

interest rate exposure on the additional $500.0 million portion of this mortgage, which was swapped to a fixed rate of 2.69% per annum. Including the as-of right extension option, this loan matures in June 2021.

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

(5) In connection with the acquisition of a commercial real estate property, the Operating Partnership issued $4.0 million, or 4,000, 3.75% Series J Preferred Units of limited partnership interest, or the Series J Preferred Units, with a mandatory liquidation preference of $1,000.00 per unit. The Series J Preferred Units can be redeemed in cash by the Operating Partnership on the earlier of (i) the date of the sale of the property or (ii) April 30, 2051 or at the option of the unitholders as further prescribed in the related agreement.

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

(7) The Master Repurchase Agreement, or MRA, has a maximum facility capacity of $300.0 million.

(8) In January 2015, the property was sold and the debt was repaid.

At March 31, 2015 and December 31, 2014, the gross book value of the properties and debt and preferred equity investments collateralizing the mortgages and other loans payable was approximately $7.9 billion and $8.2 billion, respectively.

9. 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 March 31, 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 March 31, 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 March 31, 2015, the applicable spread was 125 basis points for revolving credit facility and 140 basis points for the term loan facility. At March 31, 2015, the effective interest rate was 1.43% for the revolving credit facility and 1.65% 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 March 31, 2015, the facility fee was 25 basis points. As of March 31, 2015, we had $107.6 million of outstanding letters of credit, $520.0 million drawn under the revolving credit facility and $833.0 million outstanding under the term loan facility, with total undrawn capacity of $572.4 million under the 2012 credit facility.

The Company, the Operating Partnership and ROP are all borrowers jointly and severally obligated under the 2012 credit facility. None of our other subsidiaries are obligors under the 2012 credit facility.

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

36

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Senior Unsecured Notes

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

Issuance	March 31, 2015 Unpaid Principal Balance		March 31, 2015 Accreted Balance		December 31, 2014 Accreted Balance		Coupon Rate(1)		Effective Rate		Term (in Years)	Maturity Date
March 31, 2006(2)	$	255,308	$	255,261	$	255,250	6.00	%	6.00	%	10	March 31, 2016
October 12, 2010(3)	345,000		312,005		309,069		3.00	%	3.00	%	7	October 15, 2017
August 5, 2011(4)	250,000		249,760		249,744		5.00	%	5.00	%	7	August 15, 2018
March 16, 2010(4)	250,000		250,000		250,000		7.75	%	7.75	%	10	March 15, 2020
November 15, 2012(4)	200,000		200,000		200,000		4.50	%	4.50	%	10	December 1, 2022
June 27, 2005(2)(5)	7		7		7		4.00	%	4.00	%	20	June 15, 2025
March 26, 2007(6)	10,008		10,008		10,008		3.00	%	3.00	%	20	March 30, 2027
	$	1,310,323	$	1,277,041	$	1,274,078

____________________________________________________________________

(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 ROP.

(3) Issued by the Operating Partnership. Interest on these exchangeable notes is payable semi-annually on April 15 and October 15. The notes had an initial exchange rate representing an exchange price that was set at a 30.0% premium to the last reported sale price of SL Green's common stock on October 6, 2010, or $85.81. The initial exchange rate is subject to adjustment under certain circumstances. The current exchange rate is 12.1632 shares of SL Green's common stock per $1,000 principal amount of these notes. The notes are senior unsecured obligations of the Operating Partnership and are exchangeable upon the occurrence of specified events and during the period beginning on the twenty-second scheduled trading day prior to the maturity date and ending on the second business day prior to the maturity date, into cash or a combination of cash and shares of SL Green's common stock, if any, at our option. As a result of meeting specified events (as defined in the Indenture Agreement), these notes became exchangeable commencing January 1, 2015 and will remain exchangeable through June 30, 2015. The notes are guaranteed by ROP. On the issuance date, $78.3 million of the debt balance was recorded in equity. As of March 31, 2015, $32.9 million remained to be amortized into the debt balance.

(4) Issued by the Company, the Operating Partnership and ROP, as co-obligors.

(5) Exchangeable senior debentures which are currently callable at par. In addition, the debentures can be put to ROP, at the option of the holder at par plus accrued and unpaid interest, on June 15, 2015 and 2020 and upon the occurrence of certain change of control transactions. As a result of the acquisition of all outstanding shares of common stock of Reckson, or the Reckson Merger, the adjusted exchange rate for the debentures is 7.7461 shares of SL Green's common stock per $1,000 of principal amount of debentures and the adjusted reference dividend for the debentures is $1.3491. In April 2015, we redeemed the remaining outstanding debentures.

(6) Issued by the Operating Partnership. Interest on these remaining exchangeable notes is payable semi-annually on March 30 and September 30. The notes have an initial exchange rate representing an exchange price that was set at a 25.0% premium to the last reported sale price of the Company's common stock on March 20, 2007, or $173.30. The initial exchange rate is subject to adjustment under certain circumstances. The current exchange rate is 5.7952 shares of SL Green's common stock per $1,000 principal amount of these notes. The notes are senior unsecured obligations of the Operating Partnership and are exchangeable upon the occurrence of specified events and during the period beginning on the twenty-second scheduled trading day prior to the maturity date and ending on the second business day prior to the maturity date, into cash or a combination of cash and shares of SL Green's common stock, if any, at our option. The notes are currently redeemable at the Operating Partnership’s option. The Operating Partnership may be required to repurchase the notes on March 30, 2017 and 2022, and upon the occurrence of certain designated events.

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, our 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 minimum amount of tangible net worth, a 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, we will not during any time when a default is continuing, make distributions with respect to common stock or other equity interests, except to enable the Company to continue to qualify as a REIT for Federal income tax purposes. As of March 31, 2015 and December 31, 2014, we were in compliance with all such covenants.

Junior Subordinated Deferrable Interest Debentures

In June 2005, the Company and the Operating Partnership issued $100.0 million in unsecured trust preferred securities through a newly formed trust, SL Green Capital Trust I, or the Trust, which is a wholly-owned subsidiary of the Operating Partnership. The securities mature in 2035 and bear interest at a fixed rate of 5.61% for the first ten years ending July 2015.

37

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Thereafter, the interest rate will float at 125 basis points over the three-month LIBOR. Interest payments may be deferred for a period of up to eight consecutive quarters if the Operating Partnership exercises its right to defer such payments. The Trust preferred securities are redeemable at the option of the Operating Partnership, in whole or in part, with no prepayment premium. We do not consolidate the Trust even though it is a variable interest entity as we are not the primary beneficiary. Because the Trust is not consolidated, we have recorded the debt on our consolidated balance sheets and the related payments are classified as interest expense.

Principal Maturities

Combined aggregate principal maturities of mortgages and other loans payable, 2012 credit facility, trust preferred securities, senior unsecured notes and our share of joint venture debt as of March 31, 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		Trust Preferred Securities		Senior Unsecured Notes			Total		Joint Venture Debt
Remaining 2015	$	22,882	$	—	$	—	$	—	$	—	$	7	(1)	$	22,889	$	39,407
2016	47,360		100,311		—		—		—		255,308			402,979		534,026
2017	61,063		895,329		—		—		—		355,008			1,311,400		582,755
2018	64,462		16,000		—		—		—		250,000			330,462		2,196
2019	70,409		28,317		—		833,000		—		—			931,726		104,688
Thereafter	200,403		3,852,505		520,000		—		100,000		450,000			5,122,908		446,744
	$	466,579	$	4,892,462	$	520,000	$	833,000	$	100,000	$	1,310,323		$	8,122,364	$	1,709,816

__________________________________________________________________

(1) In April 2015, we redeemed the remaining outstanding 4.00% Exchangeable Senior Debentures due 2025.

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

	Three Months Ended March 31,
	2015			2014
Interest expense	$	76,459		$	76,708
Interest income	(652		)	(530		)
Interest expense, net	$	75,807		$	76,178
Interest capitalized	$	8,558		$	4,271

10. 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. The Service Corporation 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 income, was $1.0 million and $0.9 million for the three months ended March 31, 2015 and 2014, respectively. We also recorded expenses of $4.0 million and $3.8 million for the three months ended March 31, 2015 and 2014, respectively, for these services (excluding services provided directly to tenants).

Management Fees

S.L. Green Management Corp., a consolidated entity, receives property management fees from an entity in which Stephen L. Green owns an interest. We received management fees from such entity of $127,200 and $104,800 for the three months ended March 31, 2015 and 2014, respectively.

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SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Other

Amounts due from related parties at March 31, 2015 and December 31, 2014 consisted of the following (in thousands):

	March 31, 2015		December 31, 2014
Due from joint ventures	$	1,214	$	1,254
Other	10,874		10,481
Related party receivables	$	12,088	$	11,735

11. Noncontrolling Interests on the Company's Consolidated Financial Statements

Noncontrolling interests represent the common and preferred units of limited partnership interest in the Operating Partnership not held by the Company as well as third party equity interests in our other consolidated subsidiaries. Noncontrolling interests in the Operating Partnership are shown in the mezzanine equity while the noncontrolling interests in our other consolidated subsidiaries are shown in the equity section of the Company’s consolidated financial statements.

Common Units of Limited Partnership Interest in the Operating Partnership

As of March 31, 2015 and December 31, 2014, the noncontrolling interest unit holders owned 3.78%, or 3,912,944 units, and 3.92%, or 3,973,016 units, of the Operating Partnership, respectively. At March 31, 2015, 3,912,944 shares of SL Green's common stock were reserved for issuance upon redemption of units of limited partnership interest of the Operating Partnership.

Noncontrolling interests in the Operating Partnership is recorded at the greater of its cost basis or fair market value based on the closing stock price of SL Green's common stock at the end of the reporting period.

Below is the rollforward analysis of the activity relating to the noncontrolling interests in the Operating Partnership as of March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015			December 31, 2014
Balance at beginning of period	$	469,524		$	265,476
Distributions	(2,349		)	(7,849		)
Issuance of common units	22,114			56,469
Redemption of common units	(37,407		)	(31,653		)
Net income	1,743			18,467
Accumulated other comprehensive income allocation	(200		)	175
Fair value adjustment	45,456			168,439
Balance at end of period	$	498,881		$	469,524

Preferred Units of Limited Partnership Interest in the Operating Partnership

The Operating Partnership has 1,902,0004.5% Series G Preferred Units of limited partnership interest, or the Series G Preferred Units outstanding, with a liquidation preference of $25.00 per unit, which were issued in January 2012 in conjunction with an acquisition. The Series G Preferred unitholders receive annual dividends of $1.125 per unit paid on a quarterly basis and dividends are cumulative, subject to certain provisions. The Series G Preferred Units are convertible into a number of common units of limited partnership interest in the Operating Partnership equal to (i) the liquidation preference plus accumulated and unpaid distributions on the conversion date divided by (ii) $88.50. The common units of limited partnership interest in the Operating Partnership may be redeemed in exchange for SL Green's common stock on a 1-to-1 basis. The Series G Preferred Units also provide the holder with the right to require the Operating Partnership to repurchase the Series G Preferred Units for cash before January 31, 2022.

The Operating Partnership has 60 Series F Preferred Units outstanding with a mandatory liquidation preference of $1,000.00 per unit.

The Operating Partnership has authorized up to 700,0003.5% Series K Preferred Units of limited partnership interest, or the Series K Preferred Units, with a liquidation preference of $25.00 per unit. In August 2014, the Company issued 563,954 Series K Preferred Units in conjunction with an acquisition. The Series K Preferred unitholders receive annual dividends of $0.875 per unit paid on a quarterly basis and dividends are cumulative, subject to certain provisions. The Series K Preferred Units can be redeemed at any time, at the option of the unitholder, either for cash or are convertible into a number of common units of limited partnership

39

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

interest in the Operating Partnership equal to (i) the liquidation preference plus accumulated and unpaid distributions on the conversion date divided by (ii) $134.67.

The Operating Partnership has authorized up to 500,0004.00% Series L Preferred Units of limited partnership interest, or the Series L Preferred Units, with a liquidation preference of $25.00 per unit. In August 2014, the Company issued 378,634 Series L Preferred Units in conjunction with an acquisition. The Series L Preferred unitholders receive annual dividends of $1.00 per unit paid on a quarterly basis and dividends are cumulative, subject to certain provisions. The Series L Preferred Units can be redeemed at any time at par for cash at the option of the unitholder.

The Operating Partnership has authorized up to 1,600,0003.75% Series M Preferred Units of limited partnership interest, or the Series M Preferred Units, with a liquidation preference of $25.00 per unit. In February 2015, the Company issued 1,600,000 Series M Preferred Units in conjunction with the acquisition of ownership interests in and relating to certain residential and retail real estate properties. The Series M Preferred unitholders receive annual dividends of $0.9375 per unit paid on a quarterly basis and dividends are cumulative, subject to certain provisions. The Series M Preferred Units can be redeemed at any time at par for cash at the option of the unitholder.

Below is the rollforward analysis of the activity relating to the preferred units in the Operating Partnership as of March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015			December 31, 2014
Balance at beginning of period	$	71,115		$	49,550
Issuance of preferred units	40,000			23,565
Redemption of preferred units	(200		)	(2,000		)
Balance at end of period	$	110,915		$	71,115

12. Stockholders’ Equity of the Company

Common Stock

Our authorized capital stock consists of 260,000,000 shares, $0.01 par value per share, consisting of 160,000,000 shares of common stock, $0.01 par value per share, 75,000,000 shares of excess stock, at $0.01 par value per share, and 25,000,000 shares of preferred stock, par value $0.01 per share. As of March 31, 2015, 99,532,817 shares of common stock and no shares of excess stock were issued and outstanding.

At-The-Market Equity Offering Program

In June 2014, the Company, along with the Operating Partnership, entered into an "at-the-market" equity offering program, or ATM Program, to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 895,956 shares of our common stock for aggregate net proceeds of $113.4 million comprising the remaining balance of this ATM Program. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 895,956 units of limited partnership interest of the Operating Partnership.

In March 2015, the Company, along with the Operating Partnership, entered into a new ATM Program to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 56,680 shares of our common stock for aggregate net proceeds of $7.5 million. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 56,680 units of limited partnership interest of the Operating Partnership. As of March 31, 2015, $292.5 million remained available for issuance of common stock under the new ATM program.

Perpetual Preferred Stock

We have 9,200,000 shares of our 6.50% Series I Cumulative Redeemable Preferred Stock, or the Series I Preferred Stock, outstanding with a mandatory liquidation preference of $25.00 per share. The Series I Preferred stockholders receive annual dividends of $1.625 per share paid on a quarterly basis and dividends are cumulative, subject to certain provisions. We are entitled to redeem the Series I Preferred Stock at par for cash at our option on or after August 10, 2017. In August 2012, we received $221.9 million in net proceeds from the issuance of the Series I Preferred Stock, which were recorded net of underwriters' discount and issuance costs, and contributed the net proceeds to the Operating Partnership in exchange for 9,200,000 units of 6.50% Series I Cumulative Redeemable Preferred Units of limited partnership interest, or the Series I Preferred Units.

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SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Dividend Reinvestment and Stock Purchase Plan

In February 2015, the Company filed a registration statement with the SEC for our dividend reinvestment and stock purchase plan, or DRSPP, which automatically became effective upon filing. The Company registered 3,500,000 shares of SL Green's common stock under the DRSPP. The DRSPP commenced on September 24, 2001.

During the three months ended March 31, 2015, the Company issued 775,161 shares of SL Green's common stock and received net proceeds of $99.5 million of proceeds from dividend reinvestments and/or stock purchases under the DRSPP. DRSPP shares may be issued at a discount to the market price.

Earnings per Share

SL Green's earnings per share for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic Earnings:
Income attributable to SL Green common stockholders	$	43,277	$	146,090
Effect of Dilutive Securities:
Redemption of units to common shares	1,743		4,729
Diluted Earnings:
Income attributable to SL Green common stockholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic Shares:
Weighted average common stock outstanding	98,402	95,117
Effect of Dilutive Securities:
Redemption of units to common shares	3,964	3,079
Stock-based compensation plans	653	520
Diluted weighted average common stock outstanding	103,019	98,716

SL Green has excluded 203,975 and 860,720 common stock equivalents from the diluted shares outstanding for the three months ended March 31, 2015 and 2014, respectively, as they were anti-dilutive.

13. Partners' Capital of the Operating Partnership

The Company is the sole general partner of the Operating Partnership and at March 31, 2015 owned 99,532,817 general and limited partnership interests in the Operating Partnership and 9,200,000 Series I Preferred Units. Partnership interests in the Operating Partnership are denominated as “common units of limited partnership interest” (also referred to as “OP Units”) or “preferred units of limited partnership interest” (also referred to as “Preferred Units”). All references to OP Units and Preferred Units outstanding exclude such units held by the Company. A holder of an OP Unit may present such OP Unit to the Operating Partnership for redemption at any time (subject to restrictions agreed upon at the issuance of OP Units to particular holders that may restrict such right for a period of time, generally one year from issuance). Upon presentation of an OP Unit for redemption, the Operating Partnership must redeem such OP Unit in exchange for the cash equal to the then value of a share of common stock of the Company, except that the Company may, at its election, in lieu of cash redemption, acquire such OP Unit for one share of common stock. Because the number of shares of common stock outstanding at all times equals the number of OP Units that the Company owns, one share of common stock is generally the economic equivalent of one OP Unit, and the quarterly distribution that may be paid to the holder of an OP Unit equals the quarterly dividend that may be paid to the holder of a share of common stock. Each series of Preferred Units makes a distribution that is set in accordance with an amendment to the partnership agreement of the Operating Partnership. Preferred Units may also be convertible into OP Units at the election of the holder thereof or the Company, subject to the terms of such Preferred Units.

Net income (loss) allocated to the preferred unitholders and common unitholders reflects their pro rata share of net income (loss) and distributions.

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SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

Limited Partner Units

As of March 31, 2015, limited partners other than SL Green owned 3.78%, or 3,912,944 common units, of the Operating Partnership.

Preferred Units

Preferred units not owned by SL Green are further described in Note 11, “Noncontrolling Interests on the Company’s Consolidated Financial Statements - Preferred Units of Limited Partnership Interest in the Operating Partnership.”

Earnings per Unit

The Operating Partnership's earnings per unit for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic and Diluted Earnings:
Income attributable to SLGOP common unitholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic units:
Weighted average common units outstanding	102,366	98,196
Effect of Dilutive Securities:
Stock-based compensation plans	653	520
Diluted weighted average common units outstanding	103,019	98,716

The Operating Partnership has excluded 203,975 and 860,720 common unit equivalents from the diluted units outstanding for the three months ended March 31, 2015 and 2014, respectively, as they were anti-dilutive.

14. Share-based Compensation

We have stock-based employee and director compensation plans. Our employees are compensated through the Operating Partnership. Under each plan, whenever the Company issues common or preferred stock, the Operating Partnership issues an equivalent number of units of limited partnership interest of a corresponding class to the Company.

Third Amended and Restated 2005 Stock Option and Incentive Plan

The Third Amended and Restated 2005 Stock Option and Incentive Plan, or the 2005 Plan, was approved by the Company's board of directors in April 2013 and its stockholders in June 2013 at the Company's annual meeting of stockholders. The 2005 Plan authorizes the issuance of stock options, stock appreciation rights, unrestricted and restricted stock, phantom shares, dividend equivalent rights and other equity-based awards. Subject to adjustments upon certain corporate transactions or events, awards with respect to up to a maximum of 17,130,000 fungible units may be granted under the 2005 Plan. Currently, different types of awards count against the limit on the number of fungible units differently, with (1) full-value awards (i.e., those that deliver the full value of the award upon vesting, such as restricted stock) counting as 2.76 fungible units per share subject to such award (2) stock options, stock appreciation rights and other awards that do not deliver full value and expire five years from the date of grant counting as 0.77 fungible units per share subject to such award and (3) all other awards (e.g., ten-year stock options) counting as 1.0 fungible units per share subject to such award. Awards granted under the 2005 Plan prior to the approval of the second amendment and restatement in June 2010 and third amendment and restatement in June 2013 continue to count against the fungible unit limit based on the ratios that were in effect at the time such awards were granted, which may be different than the current ratios. As a result, depending on the types of awards issued, the 2005 Plan may result in the issuance of more or less than 17,130,000 shares. If a stock option or other award granted under the 2005 Plan expires or terminates, the common stock subject to any portion of the award that expires or terminates without having been exercised or paid, as the case may be, will again become available for the issuance of additional awards. Shares of SL Green's common stock distributed under the 2005 Plan may be treasury shares or authorized but unissued shares. Currently, unless the 2005 Plan has been previously terminated by the Company's board of directors, new awards may be granted under the 2005 Plan until June 13, 2023, which is the tenth anniversary of the date that the 2005 Plan was most recently approved by the Company's stockholders. As of March 31, 2015, 1.5 million fungible units were available for

42

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

issuance under the 2005 Plan after reserving for shares underlying outstanding restricted stock units, phantom stock units granted pursuant to our Non-Employee Directors' Deferral Program and LTIP Units, including, among others, outstanding LTIP Units issued under our 2011 Long-Term Outperformance Plan.

Options are granted under the plan at the fair market value on the date of grant and, subject to employment, generally expire five or ten years from the date of grant, are not transferable other than on death, and generally vest in one to five years commencing one year from the date of grant.

The fair value of each stock option granted is estimated on the date of grant using the Black-Scholes option pricing model based on historical information with the following weighted average assumptions for grants during the year ended December 31, 2014. The Company did not grant any stock options during the three months ended March 31, 2015.

	March 31, 2015	December 31, 2014
Dividend yield	N/A	1.60	%
Expected life of option	N/A	3.6 years
Risk-free interest rate	N/A	1.29	%
Expected stock price volatility	N/A	33.97	%

A summary of the status of the Company's stock options as of March 31, 2015 and December 31, 2014 and changes during the three months ended March 31, 2015 and the year ended December 31, 2014 are as follows:

	March 31, 2015					December 31, 2014
	Options Outstanding			Weighted Average Exercise Price		Options Outstanding			Weighted Average Exercise Price
Balance at beginning of year	1,462,726			$	87.98	1,765,034			$	83.24
Granted	—			—		102,050			119.12
Exercised	(136,936		)	75.27		(348,156		)	72.76
Lapsed or cancelled	(8,767		)	103.57		(56,202		)	90.03
Balance at end of year	1,317,023			$	89.19	1,462,726			$	87.98
Options exercisable at end of year	624,057			$	87.82	428,951			$	90.32
Weighted average fair value of options granted during the year	$	—				$	2,841,678

All options were granted with strike prices ranging from $20.67 to $137.18. The remaining weighted average contractual life of the options outstanding was 3.97 and the remaining average contractual life of the options exercisable was 3.77.

During the three months ended March 31, 2015 and 2014, we recognized $2.0 million and $2.1 million of compensation expense, respectively, for these options. As of March 31, 2015, there was $12.0 million of total unrecognized compensation cost related to unvested stock options, which is expected to be recognized over a weighted average period of three years.

Stock-based Compensation

Effective January 1, 1999, the Company implemented a deferred compensation plan, or the Deferred Plan, where shares issued under the Deferred Plan were granted to certain employees, including our executives and vesting will occur annually upon the completion of a service period or our meeting established financial performance criteria. Annual vesting occurs at rates ranging from 15% to 35% once performance criteria are reached.

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SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

A summary of the Company's restricted stock as of March 31, 2015 and December 31, 2014 and charges during the three months ended March 31, 2015 and the year ended December 31, 2014 are as follows:

	March 31, 2015		December 31, 2014
Balance at beginning of period	3,000,979		2,994,197
Granted	2,603		9,550
Cancelled	—		(2,768		)
Balance at end of period	3,003,582		3,000,979
Vested during the period	84,581		75,043
Compensation expense recorded	$	1,936,853	$	9,658,019
Weighted average fair value of restricted stock granted during the period	$	333,153	$	1,141,675

The fair value of restricted stock that vested during the three months ended March 31, 2015 and the year ended December 31, 2014 was $7.2 million and $5.5 million, respectively. As of March 31, 2015, there was $10.5 million of total unrecognized compensation cost related to unvested restricted stock, which is expected to be recognized over a weighted average period of 1.9 years.

For the three months ended March 31, 2015 and 2014, $1.6 million and $1.6 million, respectively, was capitalized to assets associated with compensation expense related to our long-term compensation plans, restricted stock and stock options.

We granted LTIP Units, which include bonus, time-based and performance based awards, with a fair value of$25.4 million and $33.2 million as of March 31, 2015and December 31,2014, respectively. The grant date fair value of the LTIP Unit awards was calculated in accordance with ASC 718. A third party consultant determined the fair value of the LTIP Units to have a discount from SL Green's common stock price. The discount was calculated by considering the inherent uncertainty that the LTIP Units will reach parity with other common partnership units and the illiquidity due to transfer restrictions. As of March 31, 2015, there was $10.4 million of total unrecognized compensation expense related to the time-based and performance based awards, which is expected to be recognized over a weighted average period of 1.1 years. During the three months ended March 31, 2015 and 2014, we recorded compensation expense related to bonus, time-based and performance based awards of $13.2 million and $8.1 million, respectively.

2010 Notional Unit Long-Term Compensation Plan

In December 2009, the compensation committee of the Company's board of directors approved the general terms of the SL Green Realty Corp. 2010 Notional Unit Long-Term Compensation Program, or the 2010 Long-Term Compensation Plan. The 2010 Long-Term Compensation Plan is a long-term incentive compensation plan pursuant to which award recipients could earn, in the aggregate, from $15.0 million up to $75.0 million of LTIP Units in the Operating Partnership based on the Company's stock price appreciation over three years beginning on December 1, 2009; provided that, if maximum performance had been achieved, $25.0 million of awards could be earned at any time after the beginning of the second year and an additional $25.0 million of awards could be earned at any time after the beginning of the third year. In order to achieve maximum performance under the 2010 Long-Term Compensation Plan, the Company's aggregate stock price appreciation during the performance period had to equal or exceed 50%. The compensation committee determined that maximum performance had been achieved at or shortly after the beginning of each of the second and third years of the performance period and for the full performance period and, accordingly, 366,815 LTIP Units, 385,583 LTIP Units and 327,416 LTIP Units were earned under the 2010 Long-Term Compensation Plan in December 2010, 2011 and 2012, respectively. Substantially in accordance with the original terms of the program, 50% of these LTIP Units vested on December 17, 2012 (accelerated from the original January 1, 2013 vesting date), 25% of these LTIP Units vested on December 11, 2013 (accelerated from the original January 1, 2014 vesting date) and the remainder vested on January 1, 2015 based on continued employment. In accordance with the terms of the 2010 Long-Term Compensation Plan, distributions were not paid on any LTIP Units until they were earned, at which time we paid all distributions that would have been paid on the earned LTIP Units since the beginning of the performance period.

The cost of the 2010 Long-Term Compensation Plan ($31.7 million, subject to forfeitures) was amortized into earnings through the final vesting period of January 1, 2015. We recorded compensation expense of $0.3 million during the three months ended March 31, 2014 related to the 2010 Long-Term Compensation Plan.

2011 Outperformance Plan

In August 2011, the compensation committee of the Company's board of directors approved the general terms of the SL Green Realty Corp. 2011 Outperformance Plan, or the 2011 Outperformance Plan. Participants in the 2011 Outperformance Plan

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SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

could earn, in the aggregate, up to $85.0 million of LTIP Units in the Operating Partnership based on our total return to stockholders for the three-year period beginning September 1, 2011. Under the 2011 Outperformance Plan, participants were entitled to share in a "performance pool" comprised of LTIP Units with a value equal to 10% of the amount by which our total return to stockholders during the three-year period exceeded a cumulative total return to stockholders of 25%, subject to the maximum of $85.0 million of LTIP Units; provided that if maximum performance was achieved, one-third of each award could be earned at any time after the beginning of the second year and an additional one-third of each award could be earned at any time after the beginning of the third year. LTIP Units earned under the 2011 Outperformance Plan are subject to continued vesting requirements, with 50% of any awards earned vested on August 31, 2014 and the remaining 50% vesting on August 31, 2015, subject to continued employment with us through such dates. Participants were not entitled to distributions with respect to LTIP Units granted under the 2011 Outperformance Plan unless and until they were earned. For LTIP Units that were earned, each participant was also entitled to the distributions that would have been paid had the number of earned LTIP Units been issued at the beginning of the performance period, with such distributions being paid in the form of additional LTIP Units. Thereafter, distributions are to be paid currently with respect to all earned LTIP Units, whether vested or unvested. In June 2014, the compensation committee determined that maximum performance had been achieved during the third year of the performance period and, accordingly, 560,908 LTIP Units, representing two-thirds of each award, were earned, subject to vesting, under the 2011 Outperformance Plan. In September 2014, the compensation committee determined that maximum performance had been achieved for the full three-year performance period and, accordingly, 280,454 LTIP units, representing the final third of each award, were earned, subject to vesting, under the 2011 Outperformance Plan.

The cost of the 2011 Outperformance Plan ($26.8 million, subject to forfeitures) will be amortized into earnings through the final vesting period. We recorded compensation expense of $0.7 million and $1.9 million during the three months ended March 31, 2015 and 2014, respectively, related to the 2011 Outperformance Plan.

2014 Outperformance Plan

In August 2014, the compensation committee of the Company's board of directors approved the general terms of the SL Green Realty Corp. 2014 Outperformance Plan, or the 2014 Outperformance Plan. Participants in the 2014 Outperformance Plan may earn, in the aggregate, up to 610,000 LTIP Units in our Operating Partnership based on our total return to stockholders for the three-year period beginning September 1, 2014. For each individual award, two-thirds of the LTIP Units may be earned based on the Company’s absolute total return to stockholders and one-third of the LTIP Units may be earned based on relative total return to stockholders compared to the constituents of the MSCI REIT Index. Awards earned based on absolute total return to stockholders will be determined independently of awards earned based on relative total return to stockholders. In the event the Company’s performance reaches either threshold before the end of the three-year performance period, a pro-rata portion of the maximum award may be earned. For each component, if the Company’s performance reaches the maximum threshold beginning with the 19th month of the performance period, participants will earn one-third of the maximum award that may be earned for that component. If the Company’s performance reaches the maximum threshold during the third year of the performance period for a component, participants will earn two-thirds (or an additional one-third) of the maximum award that may be earned for that component. LTIP Units earned under the 2014 Outperformance Plan will be subject to continued vesting requirements, with 50% of any awards earned vesting on August 31, 2017 and the remaining 50% vesting on August 31, 2018, subject to continued employment with us through such dates. Participants will not be entitled to distributions with respect to LTIP Units granted under the 2014 Outperformance Plan unless and until they are earned. If LTIP Units are earned, each participant will also be entitled to the distributions that would have been paid had the number of earned LTIP Units been issued at the beginning of the performance period, with such distributions being paid in the form of cash or additional LTIP Units. Thereafter, distributions will be paid currently with respect to all earned LTIP Units, whether vested or unvested.

The cost of the 2014 Outperformance Plan ($27.9 million, subject to forfeitures), based on the portion of the 2014 Outperformance Plan granted as of March 31, 2015, will be amortized into earnings through the final vesting period. We recorded compensation expense of $1.4 million during the three months ended March 31, 2015 related to the 2014 Outperformance Plan.

Deferred Compensation Plan for Directors

Under our Non-Employee Director's Deferral Program, which commenced July 2004, the Company's non-employee directors may elect to defer up to 100% of their annual retainer fee, chairman fees, meeting fees and annual stock grant. Unless otherwise elected by a participant, fees deferred under the program shall be credited in the form of phantom stock units. The program provides that a director's phantom stock units generally will be settled in an equal number of shares of common stock upon the earlier of (i) the January 1 coincident with or next following such director's termination of service from the Board of Directors or (ii) a change in control by us, as defined by the program. Phantom stock units are credited to each non-employee director quarterly using the closing price of SL Green's common stock on the first business day of the respective quarter. Each participating non-

45

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

employee director is also credited with dividend equivalents or phantom stock units based on the dividend rate for each quarter, which are either paid in cash currently or credited to the director’s account as additional phantom stock units.

During the three months ended March 31, 2015, 5,613 phantom stock units were earned and 5,230 shares of common stock were issued to our board of directors. We recorded compensation expense of $1.3 million during the three months ended March 31, 2015 related to the Deferred Compensation Plan. As of March 31, 2015, there were 81,262 phantom stock units outstanding pursuant to our Non-Employee Director's Deferral Program.

Employee Stock Purchase Plan

In 2007, the Company's board of directors adopted the 2008 Employee Stock Purchase Plan, or ESPP, to encourage our employees to increase their efforts to make our business more successful by providing equity-based incentives to eligible employees. The ESPP is intended to qualify as an "employee stock purchase plan" under Section 423 of the Code, and has been adopted by the board to enable our eligible employees to purchase the Company's shares of common stock through payroll deductions. The ESPP became effective on January 1, 2008 with a maximum of 500,000 shares of the common stock available for issuance, subject to adjustment upon a merger, reorganization, stock split or other similar corporate change. The Company filed a registration statement on Form S-8 with the SEC with respect to the ESPP. The common stock is offered for purchase through a series of successive offering periods. Each offering period will be three months in duration and will begin on the first day of each calendar quarter, with the first offering period having commenced on January 1, 2008. The ESPP provides for eligible employees to purchase the common stock at a purchase price equal to 85% of the lesser of (1) the market value of the common stock on the first day of the offering period or (2) the market value of the common stock on the last day of the offering period. The ESPP was approved by our stockholders at our 2008 annual meeting of stockholders. As of March 31, 2015, 81,955 shares of SL Green's common stock had been issued under the ESPP.

15. Accumulated Other Comprehensive Loss of the Company

The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of March 31, 2015 (in thousands):

	Net unrealized loss on derivative instruments(1)			SL Green’s share of joint venture net unrealized loss on derivative instruments(2)			Unrealized gain and (loss) on marketable securities		Total
Balance at December 31, 2014	(9,498		)	(95		)	2,613		(6,980		)
Other comprehensive (loss) income before reclassifications	(7,198		)	(1,188		)	597		(7,789		)
Amounts reclassified from accumulated other comprehensive income	2,641			318			—		2,959
Balance at March 31, 2015	$	(14,055	)	$	(965	)	$	3,210	$	(11,810	)

____________________________________________________________________

(1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of income. As of March 31, 2015 and December 31, 2014, the deferred net losses from these terminated hedges, which is included in accumulated other comprehensive loss relating to net unrealized loss on derivative instrument, was $11.3 million and $11.8 million, respectively.

(2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net income from unconsolidated joint ventures in the respective consolidated statements of income.

46

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

16. Accumulated Other Comprehensive Loss of the Operating Partnership

The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of March 31, 2015 (in thousands):

	Net unrealized loss on derivative instruments(1)			SLGOP’s share of joint venture net unrealized loss on derivative instruments(2)			Unrealized gain and (loss) on marketable securities		Total
Balance at December 31, 2014	(9,845		)	(100		)	2,689		(7,256		)
Other comprehensive (loss) income before reclassifications	(7,521		)	(1,237		)	650		(8,108		)
Amounts reclassified from accumulated other comprehensive income	2,747			331			—		3,078
Balance at March 31, 2015	$	(14,619	)	$	(1,006	)	$	3,339	$	(12,286	)

____________________________________________________________________

(1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of income. As of March 31, 2015 and December 31, 2014, the deferred net losses from these terminated hedges, which is included in accumulated other comprehensive loss relating to net unrealized loss on derivative instrument, was $11.7 million and $12.2 million, respectively.

(2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net income from unconsolidated joint ventures in the respective consolidated statements of income.

17. 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 following tables set forth the assets and liabilities that we measure at fair value on a recurring and non-recurring basis by their levels in the fair value hierarchy at March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015
	Total		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	47,716	$	4,287	$	43,429	$	—
Interest rate swap agreements (included in other assets)	$	3	$	—	$	3	$	—
Liabilities:
Interest rate swap agreements (included in accrued interest payable and other liabilities)	$	16,983	$	—	$	16,983	$	—

47

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

	December 31, 2014
	Total		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	39,429	$	4,332	$	35,097	$	—
Interest rate swap agreements (included in other assets)	$	2,174	—		2,174		—
Liabilities:
Interest rate swap agreements (included in accrued interest payable and other liabilities)	$	14,728	$	—	$	14,728	$	—

We determine other than temporary impairment in real estate investments and debt and preferred equity investments, including intangibles utilizing cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, which are classified as Level 3 inputs.

The marketable securities classified as Level 1 were derived from quoted prices in active markets. The valuation technique used to measure the fair value of the marketable securities classified as Level 2 were valued based on quoted market prices or model driven valuations using the significant inputs derived from or corroborated by observable market data. Marketable securities in an unrealized loss position are not considered to be other than temporarily impaired. We do not intend to sell these securities and it is not more likely than not that we will be required to sell the investments before recovery of their amortized cost bases.

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, debt and 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 debt and 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 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 March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015				December 31, 2014
	Carrying Value		Fair Value		Carrying Value		Fair Value
Debt and preferred equity investments	$	1,548,739	(1)		$	1,408,804	(1)
Fixed rate debt	$	6,016,084	$	6,582,767	$	6,140,786	$	6,565,236
Variable rate debt	2,073,000		2,116,146		2,291,943		2,315,952
	$	8,089,084	$	8,698,913	$	8,432,729	$	8,881,188

____________________________________________________________________

(1) At March 31, 2015, debt and preferred equity investments had an estimated fair value ranging between $1.7 billion and $1.9 billion. At December 31, 2014, debt and preferred equity investments had an estimated fair value ranging between $1.5 billion and $1.8 billion.

Disclosure about fair value of financial instruments was based on pertinent information available to us as of March 31, 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.

48

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

18. 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 equity 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.

The following table summarizes the notional and fair value of our consolidated derivative financial instruments at March 31, 2015 based on Level 2 information. The notional value is an indication of the extent of our involvement in these instruments at that time, but does not represent exposure to credit, interest rate or market risks (amounts in thousands).

	Notional Value		Strike Rate		Effective Date	Expiration Date	Balance Sheet Location	Fair Value
Interest Rate Cap - Sold	$	504,000	4.750	%	May 2014	May 2016	Other Assets	$	(1	)
Interest Rate Cap	504,000		4.750	%	May 2014	May 2016	Other Liabilities	1
Interest Rate Cap	500,000		4.750	%	October 2014	May 2016	Other Assets	1
Interest Rate Cap - Sold	500,000		4.750	%	November 2014	May 2016	Other Liabilities	(1		)
Interest Rate Cap	446,000		4.750	%	October 2014	May 2016	Other Assets	1
Interest Rate Cap	263,426		6.000	%	November 2013	November 2015	Other Assets	—
Interest Rate Cap	137,500		4.000	%	October 2013	September 2015	Other Assets	—
Interest Rate Swap	200,000		0.938	%	October 2014	December 2017	Other Liabilities	(326		)
Interest Rate Swap	150,000		0.940	%	October 2014	December 2017	Other Liabilities	(251		)
Interest Rate Swap	150,000		0.940	%	October 2014	December 2017	Other Liabilities	(251		)
Interest Rate Swap	144,000		2.236	%	December 2012	December 2017	Other Liabilities	(5,108		)
Interest Rate Swap	86,400		1.948	%	December 2012	December 2017	Other Liabilities	(2,407		)
Interest Rate Swap	72,000		2.310	%	December 2012	December 2017	Other Liabilities	(2,696		)
Interest Rate Swap	72,000		1.345	%	December 2012	December 2017	Other Liabilities	(862		)
Interest Rate Swap	72,000		2.310	%	December 2012	December 2017	Other Liabilities	(2,696		)
Interest Rate Swap	57,600		1.990	%	December 2012	December 2017	Other Liabilities	(1,669		)
Interest Rate Swap	30,000		2.295	%	July 2010	June 2016	Other Liabilities	(682		)
Interest Rate Swap	8,018		0.852	%	February 2015	February 2017	Other Liabilities	(33		)
								$	(16,980	)

During the three months ended March 31, 2015 and 2014, we recorded a loss on the changes in the fair value of less than $1,000 and $11,000, respectively, which is included in interest expense on the consolidated statements of income.

The Company has agreements with each of its derivative counterparties that contain a provision where if the Company either defaults or is capable of being declared in default on any of its indebtedness, then the Company could also be declared in default on its derivative obligations. As of March 31, 2015, the fair value of derivatives in a net liability position including accrued interest but excluding any adjustment for nonperformance risk related to these agreements was $18.1 million. As of March 31, 2015, the Company has not posted any collateral related to these agreements and was not in breach of any agreement provisions. If the Company had breached any of these provisions, it could have been required to settle its obligations under the agreements at their aggregate termination value of $18.1 million at March 31, 2015.

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 mortgage obligation. 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 $9.3 million of the current balance held in accumulated other comprehensive loss will be reclassified into interest expense and $1.1 million of the portion related to our share of joint venture

49

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

accumulated other comprehensive loss will be reclassified into equity in net income from unconsolidated joint ventures within the next 12 months.

The following table presents the effect of our derivative financial instruments and our share of our joint ventures' derivative financial instruments that are designated and qualify as hedging instruments on the consolidated statements of income for the three months ended March 31, 2015 and 2014, respectively (in thousands):

	Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)						Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	Amount of Loss  Reclassified from Accumulated Other Comprehensive Loss  into Income (Effective Portion)				Location of Gain Recognized in Income on Derivative	Amount of (Loss) or Gain  Recognized into Income (Ineffective Portion)
	Three Months Ended March 31,							Three Months Ended March 31,					Three Months Ended March 31,
Derivative	2015			2014				2015		2014			2015			2014
Interest Rate Swaps/Caps	$	(7,521	)	$	(51	)	Interest expense	$	2,747	$	692	Interest expense	$	(410	)	$	1
Share of unconsolidated joint ventures' derivative instruments	(1,237		)	(1,746		)	Equity in net income from unconsolidated joint ventures	331		1,273		Equity in net income from unconsolidated joint ventures	(16		)	—
	$	(8,758	)	$	(1,797	)		$	3,078	$	1,965		$	(426	)	$	1

19. Commitments and Contingencies

Legal Proceedings

As of March 31, 2015, the Company and the Operating Partnership 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.

Capital and Ground Leases Arrangements

The following is a schedule of future minimum lease payments under capital leases and non-cancellable operating leases with initial terms in excess of one year as of March 31, 2015 (in thousands):

	Capital lease			Non-cancellable operating leases
Remaining 2015	$	109		$	22,869
2016	170			30,612
2017	291			30,845
2018	291			30,845
2019	315			30,862
Thereafter	56,568			720,698
Total minimum lease payments	57,744			$	866,731
Less amount representing interest	(36,827		)
Capital lease obligations	$	20,917

50

SL Green Realty Corp. and SL Green Operating Partnership, L.P.

Notes to Consolidated Financial Statements (cont.)

March 31, 2015

(unaudited)

20. Segment Information

The Company is a REIT engaged in all aspects of property ownership and management including investment, leasing operations, capital improvements, development and redevelopment, financing, construction and maintenance in the New York Metropolitan area and have two reportable segments, real estate and debt and preferred equity. 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, "Debt and Preferred Equity Investments," for additional details on our debt and preferred equity investments.

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

	Real Estate Segment		Debt and Preferred Equity Segment		Total Company
Total revenues
Three months ended:
March 31, 2015	$	354,230	$	42,069	$	396,299
March 31, 2014	308,361		54,084		362,445
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate
Three months ended:
March 31, 2015	$	6,759	$	35,467	$	42,226
March 31, 2014	620		45,583		46,203
Total assets
As of:
March 31, 2015	$	15,514,089	$	1,566,643	$	17,080,732
December 31, 2014	15,671,662		1,424,925		17,096,587

Income from continuing operations represents total revenues less total expenses for the real estate segment and total investment income less allocated interest expense for the debt and preferred equity segment. Interest costs for the debt and preferred equity segment are imputed assuming the portfolio is 100% leveraged by our MRA facility and 2012 revolving credit facility borrowing cost. We also allocate loan loss reserves, net of recoveries, and transaction related costs to the debt and preferred equity segment. We do not allocate marketing, general and administrative expenses (totaling $25.5 million and $23.3 million for the three months ended March 31, 2015 and 2014, respectively) to the debt and 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.

The table below reconciles income from continuing operations to net income for the three months ended March 31, 2015 and 2014 (in thousands):

	Three Months Ended March 31,
	2015		2014
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate	$	42,226	$	46,203
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—		104,640
Income from continuing operations	42,226		150,843
Net income from discontinued operations	427		5,769
Gain on sale of discontinued operations	12,983		—
Net income	$	55,636	$	156,612

51

ITEM 2.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Overview

SL Green Realty Corp., an S&P 500 Company, which is referred to as SL Green or the Company, a Maryland corporation, and SL Green Operating Partnership, L.P., which is referred to as SLGOP or the Operating Partnership, a Delaware limited partnership, were formed in June 1997 for the purpose of combining the commercial real estate business of S.L. Green Properties, Inc. and its affiliated partnerships and entities. The Company is a self-managed real estate investment trust, or REIT, with in-house capabilities in property management, acquisitions and dispositions, financing, development and redevelopment, construction and leasing. Unless the context requires otherwise, all references to "we," "our" and "us" means the Company and all entities owned or controlled by the Company, including the Operating Partnership.

Reckson Associates Realty Corp., or Reckson, and Reckson Operating Partnership, L.P. or ROP, are wholly-owned subsidiaries of the Operating Partnership.

The following discussion related to our consolidated financial statements should be read in conjunction with the financial statements appearing in this Quarterly Report on Form 10-Q and in Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2014.

As of March 31, 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, Long Island, Westchester County, Connecticut and New Jersey, which are collectively known as the Suburban properties:

		Consolidated			Unconsolidated		Total
Location	Type	Number of Properties		Approximate Square Feet	Number of Properties	Approximate Square Feet	Number of Properties	Approximate Square Feet	Weighted Average Occupancy(1)
Commercial:
Manhattan	Office	23		18,429,045	7	3,476,115	30	21,905,160	96.0	%
	Retail	9	(2)	403,735	7	279,628	16	683,363	90.7	%
	Development/Redevelopment	8		883,862	5	1,952,782	13	2,836,644	38.0	%
	Fee Interest	2		783,530	—	—	2	783,530	100.0	%
		42		20,500,172	19	5,708,525	61	26,208,697	89.7	%
Suburban	Office	27		4,365,400	4	1,222,100	31	5,587,500	80.8	%
	Retail	1		52,000	—	—	1	52,000	100.0	%
	Development/Redevelopment	2		86,000	2	65,641	4	151,641	57.5	%
		30		4,503,400	6	1,287,741	36	5,791,141	80.3	%
Total commercial properties		72		25,003,572	25	6,996,266	97	31,999,838	88.0	%
Residential:
Manhattan	Residential	3	(2)	735,587	17	2,046,733	20	2,782,320	96.8	%
Suburban	Residential	1		66,611	—	—	1	66,611	84.4	%
Total residential properties		4		802,198	17	2,046,733	21	2,848,931	96.4	%
Total portfolio		76		25,805,770	42	9,042,999	118	34,848,769	88.7	%

____________________________________________________________________

(1) The weighted average occupancy for commercial properties represents the total occupied 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 March 31, 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.

As of March 31, 2015, we also managed an approximately 336,201 square foot office building owned by a third party and held debt and preferred equity investments with a book value of $1.5 billion.

Critical Accounting Policies

Refer to the 2014 Annual Report on Form 10-K of the Company and the Operating Partnership for a discussion of our critical accounting policies, which include investment in commercial real estate properties, investment in unconsolidated joint ventures,

52

revenue recognition, allowance for doubtful accounts, reserve for possible credit losses and derivative instruments. There have been no changes to these accounting policies during the three months ended March 31, 2015.

Results of Operations

Comparison of the three months ended March 31, 2015 to the three months ended March 31, 2014

The following comparison for the three months ended March 31, 2015, or 2015, to the three months ended March 31, 2014, or 2014, makes reference to the following:  (i) the effect of the “Same-Store Properties,” which represents all operating properties owned by us at January 1, 2014 and still owned by us in the same manner at March 31, 2015 and totaled 59 of our 76 consolidated operating properties, representing 82.9% of our share of annualized cash rent, (ii) the effect of the “Acquisition Properties,” which represents all properties or interests in properties acquired in 2015 and 2014 and all non-Same-Store Properties, including properties that are under development, redevelopment or deconsolidated during the period, and (iii) “Other,” which represents corporate level items not allocable to specific properties, as well as the Service Corporation and eEmerge Inc. Any assets sold or held for sale are excluded from the income from continuing operations and from the following discussion.

	Same-Store									Acquisition					Other					Consolidated
(in millions)	2015		2014		$ Change			% Change		2015			2014		2015		2014			2015			2014			$ Change			% Change
Rental revenue	$	258.8	$	248.8	$	10.0		4.0	%	$	43.6		$	7.3	$	0.9	$	(0.2	)	$	303.3		$	255.9		$	47.4		18.5	%
Escalation and reimbursement	40.3		36.5		3.8			10.4	%	0.3			1.2		0.4		0.1			41.0			37.8			3.2			8.5	%
Investment income	—		—		—			—	%	0.1			—		42.0		54.1			42.1			54.1			(12.0		)	(22.2	)%
Other income	1.5		1.2		0.3			25.0	%	4.0			—		4.4		13.4			9.9			14.6			(4.7		)	(32.2	)%
Total revenues	300.6		286.5		14.1			4.9	%	48.0			8.5		47.7		67.4			396.3			362.4			33.9			9.4	%
Property operating expenses	134.5		124.2		10.3			8.3	%	2.7			4.2		3.5		1.8			140.7			130.2			10.5			8.1	%
Transaction related costs	—		0.8		(0.8		)	0.0 %		(0.2		)	0.5		1.3		1.2			1.1			2.5			(1.4		)	(56.0	)%
Marketing, general and administrative	—		—		—			—	%	—			—		25.5		23.3			25.5			23.3			2.2			9.4	%
	134.5		125.0		9.5			7.6	%	2.5			4.7		30.3		26.3			167.3			156.0			11.3			7.2	%
Net operating income	$	166.1	$	161.5	$	4.6		2.8	%	$	45.5		$	3.8	$	17.4	$	41.1		$	229.0		$	206.4		$	22.6		10.9	%
Other income (expenses):
Interest expense and amortization of deferred financing costs, net of interest income																				(82.5		)	(79.8		)	(2.7		)	3.4	%
Depreciation and amortization																				(108.3		)	(86.5		)	(21.8		)	25.2	%
Equity in net income from unconsolidated joint ventures																				4.0			6.1			(2.1		)	(34.4	)%
Equity in net gain on sale of interest in unconsolidated joint venture/real estate																				—			104.6			(104.6		)	(100.0	)%
(Loss) gain on early extinguishment of debt																				—			—			—			—	%
Income from continuing operation																				42.2			150.8			(108.6		)	(72.0	)%
Net income from discontinued operations																				0.4			5.8			(5.4		)	(93.1	)%
Gain on sale of discontinued operations																				13.0			—			13.0			100.0	%
Net income																				$	55.6		$	156.6		$	(101.0	)	(64.5	)%

Rental, Escalation and Reimbursement Revenues

Rental revenues increased primarily as a result of the properties acquired ($36.3 million), which included the consolidation of 388-390 Greenwich Street ($36.8 million) in 2014, and an increase in occupancy at our Same-Store Properties ($10.0 million). In May 2014, we acquired our joint venture partner's interest in 388-390 Greenwich Street thereby assuming full ownership of this triple net lease property. As a result of this acquisition, we consolidated the results of operations of this property beginning in May 2014. Prior to May 2014, we accounted for our investments in 388-390 Greenwich Street under the equity method of accounting.

Escalation and reimbursement revenue increased primarily as a result of higher real estate tax recoveries ($2.9 million) and higher operating expense escalations and electric reimbursements ($0.9 million) at the Same-Store Properties mainly attributable to increases in the related expenses.

Occupancy in our Same-Store consolidated office operating properties increased to 93.4% at March 31, 2015 as compared to 91.6% at March 31, 2014. Occupancy in our Same-Store Manhattan consolidated office operating portfolio, excluding leases signed but not yet commenced, increased to 95.7% at March 31, 2015 as compared to 93.7% at March 31, 2014. Occupancy for our Same-Store Suburban consolidated office operating portfolio, excluding leases signed but not yet commenced, increased to 81.0% at March 31, 2015 as compared to 78.7% at March 31, 2014.

The following table presents a summary of the commenced leasing activity for the three months ended March 31, 2015 in our Manhattan and Suburban portfolio:

	Useable SF	Rentable SF	New Cash Rent (per rentable SF) (1)		Prev. Escalated Rent (per rentable SF) (2)		TI/LC per rentable SF		Free Rent (in months)	Average Lease Term (in years)
Manhattan
Vacancy at beginning of year	1,030,205
Sold vacancies	—
Properties under development	—
Properties placed in service	—
Space which became available during the year(3)
•       Office	68,450
•       Retail	1,701
•       Storage	—
	70,151
Total space available	1,100,356
Leased space commenced during the year:
•       Office(4)	217,457	238,695	$	59.34	$	53.94	$	53.57	4.5	8.4
•       Retail	3,484	4,415	$	1,073.83	$	314.96	$	—	3.9	11.9
•       Storage	1,745	1,745	$	9.43	$	—	$	—	4.9	10.7
Total leased space commenced	222,686	244,855	$	77.28	$	62.85	$	52.22	4.5	8.5
Total available space at end of year	877,670
Early renewals
•       Office	58,101	61,612	$	71.17	$	65.25	$	12.03	3.1	7.2
•       Retail	—	—	$	—	$	—	$	—	—	0
•       Storage	381	443	$	35.00	$	33.94	$	—	—	6.2
Total early renewals	58,482	62,055	$	70.91	$	65.02	$	11.94	3.1	7.2
Total commenced leases, including replaced previous vacancy
•       Office		300,307	$	61.77	$	57.67	$	45.05	4.2	8.1
•       Retail		4,415	$	1,073.83	$	314.96	$	—	3.9	12.0
•       Storage		2,188	$	14.61	$	33.94	$	—	3.9	9.8
Total commenced leases		306,910	$	75.99	$	63.55	$	44.08	4.2	8.2

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	Useable SF	Rentable SF	New Cash Rent (per rentable SF) (1)		Prev. Escalated Rent (per rentable SF) (2)		TI/LC per rentable SF		Free Rent (in months)	Average Lease Term (in years)
Suburban
Vacancy at beginning of period	1,128,724
Properties placed in service	—
Space which became available during the year(3)
•       Office	199,603
•       Retail	—
•       Storage	3,672
	203,275
Total space available	1,331,999
Leased space commenced during the year:
•       Office(5)	110,518	111,711	$	32.61	$	35.10	$	18.03	5.6	7.5
•       Retail	—	—	$	—	$	—	$	—	—	0
•       Storage	450	450	$	18.00	$	12.00	$	—	—	5.0
Total leased space commenced	110,968	112,161	$	32.56	$	34.95	$	17.96	5.6	7.5
Total available space at end of the year	1,221,031
Early renewals
•       Office	50,340	50,884	$	35.49	$	34.83	$	6.10	2.9	4.3
•       Retail	—	—	$	—	$	—	$	—	—	0
•       Storage	—	—	$	—	$	—	$	—	—	0
Total early renewals	50,340	50,884	$	35.49	$	34.83	$	6.10	2.9	4.3
Total commenced leases, including replaced previous vacancy
•       Office		162,595	$	33.52	$	34.99	$	14.30	4.7	6.5
•       Retail		—	$	—	$	—	$	—	—	0
•       Storage		450	$	18.00	$	12.00	$	—	—	5.0
Total commenced leases		163,045	$	33.47	$	34.90	$	14.26	4.7	6.5

____________________________________________________________________

(1) Annual initial base rent.

(2) Escalated rent is calculated as total annual income less electric charges.

(3) Includes expiring space, relocating tenants and move-outs where tenants vacated. Excludes lease expirations where tenants held over.

(4) Average starting office rent excluding new tenants replacing vacancies was $58.96 per rentable square feet for 124,899 rentable square feet. Average starting office rent for office space (leased and early renewals, excluding new tenants replacing vacancies) was $62.99 per rentable square feet for 186,511 rentable square feet.

(5) Average starting office rent excluding new tenants replacing vacancies was $34.28 per rentable square feet for 72,102 rentable square feet. Average starting office rent for office space (leased and early renewals, excluding new tenants replacing vacancies) was $34.78 per rentable square feet for 122,986 rentable square feet.

At March 31, 2015, 2.9% and 8.6% of the office space leased at our consolidated Manhattan and Suburban operating properties, respectively, is expected to expire during the remainder of 2015. Based on our estimates at March 31, 2015, the current market asking rents on these expected 2015 lease expirations at our consolidated Manhattan operating properties are 8.1% higher than the existing in-place fully escalated rents while the current market asking rents on all our consolidated Manhattan operating properties are 13.6% higher than the existing in-place fully escalated rents on leases that are scheduled to expire in all future years. Based on our estimates at March 31, 2015, the current market asking rents on these expected 2015 lease expirations at our consolidated Suburban operating properties are 4.0% lower than the existing in-place fully escalated rents while the current market asking rents on all our consolidated Suburban operating properties are 2.4% higher than the existing in-place fully escalated rents on leases that are scheduled to expire in all future years.

Investment Income

Investment income decreased primarily as a result of additional income recognized during the three months ended March 31, 2014 for a mezzanine investment that was previously on non-accrual for which the underlying property was sold ($10.1 million) and a financing receivable which we began accruing interest following the completion of the development of the underlying property ($4.2 million). This decrease was partially offset by a higher invested balance during the first quarter of 2015. For the

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three months ended March 31, 2015, the weighted average debt and preferred equity investment balance outstanding and weighted average yield were $1.5 billion and 10.4%, respectively, compared to $1.4 billion and 10.6%, respectively, for the same period in 2014. As of March 31, 2015, the debt and preferred equity investments had a weighted average term to maturity of 1.9 years.

Other Income

Other income decreased primarily as a result of incentive income received in 2014 from a joint venture investment ($7.6 million) and lower contributions from Service Corporation ($1.1 million), partially offset by non-recurring fee received from a current tenant in 2015 ($3.5 million).

Property Operating Expenses

Property operating expenses increased primarily as a result of higher operating expenses at the Same-Store Properties ($10.3 million). The increase in property operating expenses at the Same-Store Properties was mainly a result of higher real estate taxes ($4.5 million), which was driven by higher assessed values and tax rates, utility expenses due, in part, to seasonality ($2.0 million), repairs and maintenance ($1.0 million) and payroll costs ($0.5 million).

Marketing, General and Administrative Expenses

Marketing, general and administrative, or MG&A, expenses increased primarily from the impact of stock based compensation related charges as a result of the issuance of stock based awards in the first quarter. MG&A expenses for the three months ended March 31, 2015 were $25.5 million, or 5.6% of total revenues including our share of joint venture revenues, and 53 basis points of total assets including our share of joint venture assets compared to $23.3 million, or 5.4% of total revenues including our share of joint venture revenues, and 53 basis points of total assets including our share of joint venture assets for the same period in 2014.

Interest Expense and Amortization of Deferred Financing Costs, Net of Interest Income

Interest expense and amortization of deferred financing costs, net of interest income, increased as a result of the acquisition of our joint venture partner's interest and a new mortgage at 388-390 Greenwich Street ($11.2 million), increased borrowings on the 2012 credit facility ($1.3 million) and the purchase of interest rate swaps during the fourth quarter of 2014 ($1.1 million). This increase was partially offset by the repayment of the mortgages at 625 Madison Avenue ($2.2 million) and 125 Park Avenue ($1.5 million) during the fourth quarter of 2014, decreased borrowings on our MRA ($1.1 million) and the repayment of 5.875% senior notes in August 2014 ($1.1 million). The weighted average consolidated debt balance outstanding increased from $7.1 billion for the three months ended March 31, 2014 to $8.3 billion for the three months ended March 31, 2015. The weighted average interest rate decreased from 4.60% for the three months ended March 31, 2014 to 3.94% for the three months ended March 31, 2015.

Depreciation and Amortization

Depreciation and amortization increased primarily as a result of the Acquisition Properties ($21.5 million), which included the consolidation of 388-390 Greenwich Street in 2014 ($20.4 million).

Equity in Net Income From Unconsolidated Joint Ventures

Equity in net income from unconsolidated joint ventures decreased primarily as a result of lower net income contributions from 388-390 Greenwich ($5.4 million) as a result of our acquisition of our joint venture partner's interest in May 2014, the refinancing and early prepayment of 3 Columbus Circle in the first quarter of 2015 ($0.9 million) and 724 Fifth Avenue in the second quarter of 2014 ($0.8 million), and 180 Broadway ($0.7 million), which was sold in September 2014. This increase was partially offset by higher contributions from the refinancing and early prepayment in 2014 of 100 Park Avenue ($2.6 million) and a debt and preferred equity investment that was originated late in the first quarter of 2014 ($2.1 million), which has been accounted for as an equity investment, and net loss recognized in 2014 from the West Coast Office portfolio ($2.4 million), which interests were sold in March 2014.

Occupancy at our unconsolidated Manhattan office operating properties was 94.1% and 91.3% at March 31, 2015 and 2014, respectively. Occupancy at our unconsolidated Suburban office operating properties was 80.1% and 88.9% at March 31, 2015 and 2014, respectively. At March 31, 2014, 8.3% and 7.5% of the space leased at our unconsolidated Manhattan and Suburban operating properties, respectively, are expected to expire in 2015. At March 31, 2014, we estimate that current market asking rents on these expected 2015 lease expirations at our unconsolidated Manhattan and Suburban office operating properties are 16.0% higher and 8.3% lower, respectively, than then existing in-place fully escalated rents.

Discontinued Operations

Discontinued operations for the three months ended March 31, 2015 includes the gain recognized on the sale of 180 Maiden Lane ($17.0 million) and the related results of operations. Discontinued operations for the three months ended March 31, 2014 includes the results of operations for 180 Maiden Lane and 2 Herald Square, 985-987 Third Avenue and 673 First Avenue, which were sold in 2014.

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Reconciliation of Same-Store Operating Income to Net Operating Income

We present Same-Store net operating income, or Same-Store NOI, because we believe that this measure provides investors with useful information regarding the operating performance of properties that are comparable for the periods presented. We determine Same-Store net operating income by subtracting Same-Store property operating expenses and ground rent from Same-Store rental revenues and other income. Our method of calculation may be different from methods used by other REITs, and, accordingly, may not be comparable to such other REITs. None of these measures is an alternative to net income (determined in accordance with GAAP) and Same-Store performance should not be considered an alternative to GAAP net income performance. 

For properties owned since January 1, 2014 and still owned and operated at March 31, 2015, Same-Store NOI is determined as follows (in millions):

	Three Months Ended March 31,
	2015		2014		$ Change		% Change
Rental revenues	$	299.1	$	285.3	$	13.8	4.84	%
Other income	1.5		1.2		0.3		25.00	%
Total revenues	300.6		286.5		14.1		4.92	%
Property operating expenses	134.5		125.0		9.5		7.60	%
Operating income	166.1		161.5		4.6		2.85	%
Less: Non-building revenue	0.5		0.2		0.3		150.00	%
Same-Store NOI	$	165.6	$	161.3	$	4.3	2.67	%

Same-Store NOI increased by $4.3 million, or 2.7%, from $161.3 million for the three months ended March 31, 2014 to $165.6 million for the year ended March 31, 2015.

Liquidity and Capital Resources

We currently expect that our principal sources of funds to meet our short-term and long-term liquidity requirements for working capital and funds for acquisition and development or redevelopment of properties, tenant improvements, leasing costs, repurchases or repayments of outstanding indebtedness (which may include exchangeable debt) and for debt and preferred equity investments will include:

(1) Cash flow from operations;

(2) Cash on hand;

(3) Borrowings under the 2012 credit facility;

(4) Other forms of secured or unsecured financing;

(5) Net proceeds from divestitures of properties and redemptions, participations and dispositions of debt and preferred equity investments; and

(6) Proceeds from common or preferred equity or debt offerings by the Company, the Operating Partnership (including issuances of units of limited partnership interest in the Operating Partnership and Trust preferred securities) or ROP.

Cash flow from operations is primarily dependent upon the occupancy level of our portfolio, the net effective rental rates achieved on our leases, the collectability of rent, operating escalations and recoveries from our tenants and the level of operating and other costs. Additionally, we believe that our debt and preferred equity investment program will continue to serve as a source of operating cash flow.

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The combined aggregate principal maturities of our property mortgages and other loans payable, corporate obligations and our share of joint venture debt, including as-of-right extension options, as of March 31, 2015 are as follows (in thousands):

	Remaining 2015			2016		2017		2018		2019		Thereafter		Total
Property mortgages and other loans	$	22,882		$	147,671	$	956,392	$	80,462	$	98,726	$	4,052,908	$	5,359,041
MRA facility	—			—		—		—		—		—		—
Corporate obligations	7		(1)	255,308		355,008		250,000		833,000		1,070,000		2,763,323
Joint venture debt-our share	39,407			534,026		582,755		2,196		104,688		446,744		1,709,816
Total	$	62,296		$	937,005	$	1,894,155	$	332,658	$	1,036,414	$	5,569,652	$	9,832,180

__________________________________________________________________

(1) In April 2015, we redeemed all of the outstanding 4.00% Exchangeable Senior Debentures due 2025.

As of March 31, 2015, we had $378.5 million of consolidated cash on hand, inclusive of $47.7 million of marketable securities. We expect to generate positive cash flow from operations for the foreseeable future. We may seek to access private and public debt and equity capital when the opportunity presents itself, although there is no guarantee that this capital will be made available to us at efficient levels or at all. Management believes that these sources of liquidity, if we are able to access them, along with potential refinancing opportunities for secured debt, will allow us to satisfy our debt obligations, as described above, upon maturity, if not before.

We also have investments in several real estate joint ventures with various partners who we consider to be financially stable and who have the ability to fund a capital call when needed. Most of our joint ventures are financed with non-recourse debt. We believe that property level cash flows along with unfunded committed indebtedness and proceeds from the refinancing of outstanding secured indebtedness will be sufficient to fund the capital needs of our joint venture properties.

Cash Flows

The following summary discussion of our cash flows is based on our consolidated statements of cash flows in "Item 8. Financial Statements" and is not meant to be an all-inclusive discussion of the changes in our cash flows for the periods presented below.

Cash and cash equivalents were $330.8 million and $447.2 million at March 31, 2015 and 2014, respectively, representing a decrease of $116.4 million. The decrease was a result of the following changes in cash flows (in thousands):

	Three Months Ended March 31,
	2015			2014			Increase (Decrease)
Net cash provided by operating activities	$	90,959		$	88,148		$	2,811
Net cash provided by (used in) investing activities	$	230,297		$	(71,801	)	$	302,098
Net cash (used in) provided by financing activities	$	(271,895	)	$	224,123		$	(496,018	)

Our principal source of operating cash flow is related to the leasing and operating of the properties in our portfolio. Our properties provide a relatively consistent stream of cash flow that provides us with resources to pay operating expenses, debt service and fund quarterly dividend and distribution payment requirements. At March 31, 2015, our Manhattan and Suburban consolidated office portfolios were 96% and 81% occupied, respectively. Our debt and preferred equity and joint venture investments also provide a steady stream of operating cash flow to us.

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Cash is used in investing activities to fund acquisitions, development or redevelopment projects and recurring and nonrecurring capital expenditures. We selectively invest in new projects that enable us to take advantage of our development, leasing, financing and property management skills and invest in existing buildings that meet our investment criteria. During the three months ended March 31, 2015, when compared to the three month ended March 31, 2014, we used cash primarily for the following investing activities (in thousands):

Acquisitions of real estate	$	(6,290	)
Capital expenditures and capitalized interest	1,096
Escrow cash-capital improvements/acquisition deposits	31,777
Joint venture investments	(64,806		)
Distributions from joint ventures	(27,012		)
Proceeds from sales of real estate/partial interest in property	376,344
Debt and preferred equity and other investments	(9,011		)
Increase in net cash provided by investing activities	$	302,098

Funds spent on capital expenditures, which comprise building and tenant improvements, decreased from $48.2 million for the three months ended March 31, 2014 to $47.1 million for the three months ended March 31, 2015. The decreased capital expenditures relate primarily to decreased costs incurred in connection with the redevelopment of properties.

We generally fund our investment activity through sale of real estate, property-level financing, our 2012 credit facility, MRA facility, senior unsecured notes, convertible or exchangeable securities, construction loans and from time to time, Company issued common or preferred stock, or the Operating Partnership may issue common or preferred units of limited partnership interest. During the three months ended March 31, 2015, when compared to the three months ended March 31, 2014, we used cash for the following financing activities (in thousands):

Proceeds from our debt obligations	$	(59,216	)
Repayments under our debt obligations	(560,146		)
Noncontrolling interests, contributions in excess of distributions	(110,647		)
Other financing activities	24,021
Proceeds from stock options exercised and DRSPP issuance	100,848
Proceeds from issuance of common and preferred stock	120,573
Redemption of preferred stock	(200		)
Dividends and distributions paid	(11,251		)
Increase in net cash used in financing activities	$	(496,018	)

Capitalization

As of March 31, 2015, SL Green had 99,532,817 shares of common stock, 3,912,944 common units of limited partnership interest in the Operating Partnership held by persons other than the Company, and 9,200,000 shares of SL Green's 6.50% Series I Cumulative Redeemable Preferred Stock, or Series I Preferred Stock, outstanding. In addition, persons other than the Company held Preferred Units of limited partnership interests in the Operating Partnership having an aggregate liquidation preference of $110.9 million.

At-The-Market Equity Offering Program

In June 2014, the Company, along with the Operating Partnership, entered into an "at-the-market" equity offering program, or ATM Program, to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 895,956 shares of our common stock for aggregate net proceeds of $113.4 million comprising the remaining balance of this ATM program. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 895,956 units of limited partnership interest of the Operating Partnership.

In March 2015, the Company, along with the Operating Partnership, entered into a new ATM Program to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 56,680 shares of our common stock for aggregate net proceeds of $7.5 million. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 56,680 units of limited partnership interest of the Operating Partnership. As of March 31, 2015, $292.5 million remained available for issuance of common stock under the new ATM program.

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Dividend Reinvestment and Stock Purchase Plan

In February 2015, the Company filed a registration statement with the SEC for our dividend reinvestment and stock purchase plan, or DRSPP, which automatically became effective upon filing. The Company registered 3,500,000 shares of SL Green's common stock under the DRSPP. The DRSPP commenced on September 24, 2001.

During the three months ended March 31, 2015, the Company issued 775,161 shares of SL Green's common stock and received $99.5 million of proceeds from dividend reinvestments and/or stock purchases under the DRSPP. DRSPP shares may be issued at a discount to the market price.

Third Amended and Restated 2005 Stock Option and Incentive Plan

The Third Amended and Restated 2005 Stock Option and Incentive Plan, or the 2005 Plan, was approved by the Company's board of directors in April 2013 and its stockholders in June 2013 at the Company's annual meeting of stockholders. Subject to adjustments upon certain corporate transactions or events, awards with respect to up to a maximum of 17,130,000 fungible units may be granted as options, restricted stock, phantom shares, dividend equivalent rights and other equity-based awards under the 2005 Plan.  As of March 31, 2015, 1.5 million fungible units were available for issuance under the 2005 Plan after reserving for shares underlying outstanding restricted stock units, phantom stock units granted pursuant to our Non-Employee Directors' Deferral Program and LTIP Units, including, among others, outstanding LTIP Units issued under our 2011 Long-Term Outperformance Plan.

2010 Notional Unit Long-Term Compensation Plan

In December 2009, the compensation committee of the Company's board of directors approved the general terms of the SL Green Realty Corp. 2010 Notional Unit Long-Term Compensation Program, or the 2010 Long-Term Compensation Plan. The 2010 Long-Term Compensation Plan is a long-term incentive compensation plan pursuant to which award recipients could earn, in the aggregate, from $15.0 million up to $75.0 million of LTIP Units in the Operating Partnership based on the Company's stock price appreciation over three years beginning on December 1, 2009; provided that, if maximum performance had been achieved, $25.0 million of awards could be earned at any time after the beginning of the second year and an additional $25.0 million of awards could be earned at any time after the beginning of the third year. In order to achieve maximum performance under the 2010 Long-Term Compensation Plan, the Company's aggregate stock price appreciation during the performance period had to equal or exceed 50%. The compensation committee determined that maximum performance had been achieved at or shortly after the beginning of each of the second and third years of the performance period and for the full performance period and, accordingly, 366,815 LTIP Units, 385,583 LTIP Units and 327,416 LTIP Units were earned under the 2010 Long-Term Compensation Plan in December 2010, 2011 and 2012, respectively. Substantially in accordance with the original terms of the program, 50% of these LTIP Units vested on December 17, 2012 (accelerated from the original January 1, 2013 vesting date), 25% of these LTIP Units vested on December 11, 2013 (accelerated from the original January 1, 2014 vesting date) and the remainder vested on January 1, 2015 based on continued employment. In accordance with the terms of the 2010 Long-Term Compensation Plan, distributions were not paid on any LTIP Units until they were earned, at which time we paid all distributions that would have been paid on the earned LTIP Units since the beginning of the performance period.

The cost of the 2010 Long-Term Compensation Plan ($31.7 million, subject to forfeitures) was amortized into earnings through the final vesting period of January 1, 2015. We recorded compensation expense of $0.3 million during the three months ended March 31, 2014 related to the 2010 Long-Term Compensation Plan.

2011 Outperformance Plan

In August 2011, the compensation committee of the Company's board of directors approved the general terms of the SL Green Realty Corp. 2011 Outperformance Plan, or the 2011 Outperformance Plan. Participants in the 2011 Outperformance Plan could earn, in the aggregate, up to $85.0 million of LTIP Units in the Operating Partnership based on our total return to stockholders for the three-year period beginning September 1, 2011. Under the 2011 Outperformance Plan, participants were entitled to share in a "performance pool" comprised of LTIP Units with a value equal to 10% of the amount by which our total return to stockholders during the three-year period exceeded a cumulative total return to stockholders of 25%, subject to the maximum of $85.0 million of LTIP Units; provided that if maximum performance was achieved, one-third of each award could be earned at any time after the beginning of the second year and an additional one-third of each award could be earned at any time after the beginning of the third year. LTIP Units earned under the 2011 Outperformance Plan are subject to continued vesting requirements, with 50% of any awards earned vested on August 31, 2014 and the remaining 50% vesting on August 31, 2015, subject to continued employment with us through such dates. Participants were not entitled to distributions with respect to LTIP Units granted under the 2011 Outperformance Plan unless and until they were earned. For LTIP Units that were earned, each participant was also be entitled to the distributions that would have been paid had the number of earned LTIP Units been issued at the beginning of the performance period, with such distributions being paid in the form of additional LTIP Units. Thereafter, distributions are to be paid currently with respect to all earned LTIP Units, whether vested or unvested. In June 2014, the compensation committee determined that maximum performance had been achieved during the third year of the performance period and, accordingly, 560,908 LTIP Units,

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representing two-thirds of each award, were earned, subject to vesting, under the 2011 Outperformance Plan. In September 2014, the compensation committee determined that maximum performance had been achieved for the full three-year performance period and, accordingly, 280,454 LTIP units, representing the final third of each award, were earned, subject to vesting, under the 2011 Outperformance Plan.

The cost of the 2011 Outperformance Plan ($26.8 million, subject to forfeitures) will be amortized into earnings through the final vesting period. We recorded compensation expense of $0.7 million and $1.9 million during the three months ended March 31, 2015 and 2014, respectively, related to the 2011 Outperformance Plan.

2014 Outperformance Plan

In August 2014, the compensation committee of the Company's board of directors approved the general terms of the SL Green Realty Corp. 2014 Outperformance Plan, or the 2014 Outperformance Plan. Participants in the 2014 Outperformance Plan may earn, in the aggregate, up to 610,000 LTIP Units in our Operating Partnership based on our total return to stockholders for the three-year period beginning September 1, 2014. For each individual award, two-thirds of the LTIP Units may be earned based on the Company’s absolute total return to stockholders and one-third of the LTIP Units may be earned based on relative total return to stockholders compared to the constituents of the MSCI REIT Index. Awards earned based on absolute total return to stockholders will be determined independently of awards earned based on relative total return to stockholders. In the event the Company’s performance reaches either threshold before the end of the three-year performance period, a pro-rata portion of the maximum award may be earned. For each component, if the Company’s performance reaches the maximum threshold beginning with the 19th month of the performance period, participants will earn one-third of the maximum award that may be earned for that component. If the Company’s performance reaches the maximum threshold during the third year of the performance period for a component, participants will earn two-thirds (or an additional one-third) of the maximum award that may be earned for that component. LTIP Units earned under the 2014 Outperformance Plan will be subject to continued vesting requirements, with 50% of any awards earned vesting on August 31, 2017 and the remaining 50% vesting on August 31, 2018, subject to continued employment with us through such dates. Participants will not be entitled to distributions with respect to LTIP Units granted under the 2014 Outperformance Plan unless and until they are earned. If LTIP Units are earned, each participant will also be entitled to the distributions that would have been paid had the number of earned LTIP Units been issued at the beginning of the performance period, with such distributions being paid in the form of cash or additional LTIP Units. Thereafter, distributions will be paid currently with respect to all earned LTIP Units, whether vested or unvested.

The cost of the 2014 Outperformance Plan ($27.9 million, subject to forfeitures), based on the portion of the 2014 Outperformance Plan granted as of March 31, 2015, will be amortized into earnings through the final vesting period. We recorded compensation expense of $1.4 million during the three months ended March 31, 2015 related to the 2014 Outperformance Plan.

Deferred Compensation Plan for Directors

Under our Non-Employee Director's Deferral Program, which commenced July 2004, the Company's non-employee directors may elect to defer up to 100% of their annual retainer fee, chairman fees, meeting fees and annual stock grant. Unless otherwise elected by a participant, fees deferred under the program shall be credited in the form of phantom stock units. The program provides that a director's phantom stock units generally will be settled in an equal number of shares of common stock upon the earlier of (i) the January 1 coincident with or next following such director's termination of service from the Board of Directors or (ii) a change in control by us, as defined by the program. Phantom stock units are credited to each non-employee director quarterly using the closing price of SL Green's common stock on the first business day of the respective quarter. Each participating non-employee director is also credited with dividend equivalents or phantom stock units based on the dividend rate for each quarter, which are either paid in cash currently or credited to the director’s account as additional phantom stock units.

During the three months ended March 31, 2015, 5,613 phantom stock units were earned and 5,230 shares of common stock were issued to our board of directors. We recorded compensation expense of $1.3 million during the three months ended March 31, 2015 related to the Deferred Compensation Plan. As of March 31, 2015, there were 81,262 phantom stock units outstanding pursuant to our Non-Employee Director's Deferral Program.

Employee Stock Purchase Plan

In 2007, the Company's board of directors adopted the 2008 Employee Stock Purchase Plan, or ESPP, to encourage our employees to increase their efforts to make our business more successful by providing equity-based incentives to eligible employees. The ESPP is intended to qualify as an "employee stock purchase plan" under Section 423 of the Code, and has been adopted by the board to enable our eligible employees to purchase the Company's shares of common stock through payroll deductions. The ESPP became effective on January 1, 2008 with a maximum of 500,000 shares of the common stock available for issuance, subject to adjustment upon a merger, reorganization, stock split or other similar corporate change. The Company filed a registration statement on Form S-8 with the SEC with respect to the ESPP. The common stock is offered for purchase through a series of successive offering periods. Each offering period will be three months in duration and will begin on the first day of each calendar quarter, with the first offering period having commenced on January 1, 2008. The ESPP provides for eligible employees to purchase

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the common stock at a purchase price equal to 85% of the lesser of (1) the market value of the common stock on the first day of the offering period or (2) the market value of the common stock on the last day of the offering period. The ESPP was approved by our stockholders at our 2008 annual meeting of stockholders. As of March 31, 2015, 81,955 shares of SL Green's common stock had been issued under the ESPP.

Market Capitalization

At March 31, 2015, borrowings under our mortgages and other loans payable, 2012 credit facility, senior unsecured notes, trust preferred securities and our share of joint venture debt represented 41.8% of our combined market capitalization of $23.4 billion (based on a common stock price of $128.38 per share, the closing price of SL Green's common stock on the NYSE on March 31, 2015). Market capitalization includes our consolidated debt, common and preferred stock and the conversion of all units of limited partnership interest in the Operating Partnership, and our share of joint venture debt.

Indebtedness

The table below summarizes our consolidated mortgages and other loans payable, 2012 credit facility, senior unsecured notes and trust preferred securities outstanding at March 31, 2015 and December 31, 2014, (amounts in thousands).

Debt Summary:	March 31, 2015			December 31, 2014
Balance
Fixed rate	$	4,974,083		$	5,098,741
Variable rate—hedged	1,042,001			1,042,045
Total fixed rate	6,016,084			6,140,786
Variable rate(1)	1,196,319			1,572,124
Variable rate—supporting variable rate assets	876,681			719,819
Total variable rate	2,073,000			2,291,943
Total	$	8,089,084		$	8,432,729
Percent of Total Debt:
Total fixed rate	74.4		%	72.8		%
Variable rate	25.6		%	27.2		%
Total	100.0		%	100.0		%
Effective Interest Rate for the Year:
Fixed rate	4.72		%	4.97		%
Variable rate	1.68		%	1.90		%
Effective interest rate	3.95		%	4.24		%

____________________________________________________________________

(1) At December 31, 2014, the variable rate balance included the mortgage at 180 Maiden Lane, which was included in liabilities related to assets held for sale.

The variable rate debt shown above generally bears interest at an interest rate based on 30-day LIBOR (0.18% and 0.17% at March 31, 2015 and December 31, 2014, respectively). Our consolidated debt at March 31, 2015 had a weighted average term to maturity of 5.82 years.

Certain of our debt and equity investments, with a carrying value of $0.9 billion at March 31, 2015, are variable rate investments which mitigate our exposure to interest rate changes on our unhedged variable rate debt.

Mortgage Financing

As of March 31, 2015, our total mortgage debt (excluding our share of joint venture mortgage debt of $1.7 billion) consisted of $4.6 billion of fixed rate debt, including swapped variable rate debt, with an effective weighted average interest rate of 4.72% and $0.8 billion of variable rate debt with an effective weighted average interest rate of 1.68%.

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

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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 March 31, 2015, the 2012 credit facility, as amended, consists 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 March 31, 2015, the 2012 credit facility bore interest at a spread over LIBOR ranging from (i) 87.5 basis points to 155.0 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 December 31, 2014, the applicable spread was 125 basis points for revolving credit facility and 140 basis points for the term loan facility. At March 31, 2015, the effective interest rate was 1.43% for the revolving credit facility and 1.65% 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 March 31, 2015, the facility fee was 25 basis points. As of March 31, 2015, we had $107.6 million of outstanding letters of credit, $520.0 million drawn under the revolving credit facility and $833.0 million outstanding under the term loan facility, with total undrawn capacity of $572.4 million under the 2012 credit facility.

The Company, the Operating Partnership and ROP are all borrowers jointly and severally obligated under the 2012 credit facility. None of our other subsidiaries are obligors under the 2012 credit facility.

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

Master Repurchase Agreement

The Master Repurchase Agreement, as amended in December 2013, or MRA, provides us an ability to sell certain debt investments in exchange for cash with a simultaneous agreement to repurchase the same debt investments at a certain date or on demand. This MRA has a maximum facility capacity of $300.0 million and bears interest ranging from 250 and 325 basis points over one-month LIBOR depending on the pledged collateral. At March 31, 2015, we had $300.0 million of undrawn capacity under the MRA.

Senior Unsecured Notes

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

Issuance	March 31, 2015 Unpaid Principal Balance		March 31, 2015 Accreted Balance		December 31, 2014 Accreted Balance		Coupon Rate(1)		Effective Rate		Term (in Years)	Maturity Date
March 31, 2006(2)	$	255,308	$	255,261	$	255,250	6.00	%	6.00	%	10	March 31, 2016
October 12, 2010(3)	345,000		312,005		309,069		3.00	%	3.00	%	7	October 15, 2017
August 5, 2011(4)	250,000		249,760		249,744		5.00	%	5.00	%	7	August 15, 2018
March 16, 2010(4)	250,000		250,000		250,000		7.75	%	7.75	%	10	March 15, 2020
November 15, 2012(4)	200,000		200,000		200,000		4.50	%	4.50	%	10	December 1, 2022
June 27, 2005(2)(5)	7		7		7		4.00	%	4.00	%	20	June 15, 2025
March 26, 2007(6)	10,008		10,008		10,008		3.00	%	3.00	%	20	March 30, 2027
	$	1,310,323	$	1,277,041	$	1,274,078

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(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 ROP.

(3) Issued by the Operating Partnership. Interest on these exchangeable notes is payable semi-annually on April 15 and October 15. The notes had an initial exchange rate representing an exchange price that was set at a 30.0% premium to the last reported sale price of SL Green's common stock on October 6, 2010, or $85.81. The initial exchange rate is subject to adjustment under certain circumstances. The current exchange rate is 12.1632 shares of SL Green's common stock per $1,000 principal amount of these notes. The notes are senior unsecured obligations of the Operating Partnership and are exchangeable upon the occurrence of specified events and during the period beginning on the twenty-second scheduled trading day prior to the maturity date and ending on the second business day prior to the maturity date, into cash or a combination of cash and shares of SL Green's common stock, if any, at our option. As a result of meeting specified events (as defined in the Indenture Agreement), these notes became exchangeable commencing January 1, 2015 and will remain exchangeable through June 30, 2015. The notes are guaranteed by ROP. On the issuance date, $78.3 million of the debt balance was recorded in equity. As of March 31, 2015, $32.9 million remained to be amortized into the debt balance.

(4) Issued by the Company, the Operating Partnership and ROP, as co-obligors.

(5) Exchangeable senior debentures which are currently callable at par. In addition, the debentures can be put to ROP, at the option of the holder at par plus accrued and unpaid interest, on June 15, 2015 and 2020 and upon the occurrence of certain change of control transactions. As a result of the acquisition of all outstanding shares of common stock of Reckson, or the Reckson Merger, the adjusted exchange rate for the debentures is 7.7461 shares of SL Green's

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common stock per $1,000 of principal amount of debentures and the adjusted reference dividend for the debentures is $1.3491. In April 2015, we redeemed the remaining outstanding debentures.

(6) Issued by the Operating Partnership. Interest on these remaining exchangeable notes is payable semi-annually on March 30 and September 30. The notes have an initial exchange rate representing an exchange price that was set at a 25.0% premium to the last reported sale price of the Company's common stock on March 20, 2007, or $173.30. The initial exchange rate is subject to adjustment under certain circumstances. The current exchange rate is 5.7952 shares of SL Green's common stock per $1,000 principal amount of these notes. The notes are senior unsecured obligations of the Operating Partnership and are exchangeable upon the occurrence of specified events and during the period beginning on the twenty-second scheduled trading day prior to the maturity date and ending on the second business day prior to the maturity date, into cash or a combination of cash and shares of SL Green's common stock, if any, at our option. The notes are currently redeemable at the Operating Partnership’s option. The Operating Partnership may be required to repurchase the notes on March 30, 2017 and 2022, and upon the occurrence of certain designated events.

Junior Subordinated Deferrable Interest Debentures

In June 2005, the Company and the Operating Partnership issued $100.0 million in unsecured trust preferred securities through a newly formed trust, SL Green Capital Trust I, or the Trust, which is a wholly-owned subsidiary of the Operating Partnership. The securities mature in 2035 and bear interest at a fixed rate of 5.61% for the first ten years ending July 2015. Thereafter, the interest rate will float at 125 basis points over the three-month LIBOR. Interest payments may be deferred for a period of up to eight consecutive quarters if the Operating Partnership exercises its right to defer such payments. The Trust preferred securities are redeemable at the option of the Operating Partnership, in whole or in part, with no prepayment premium. We do not consolidate the Trust even though it is a variable interest entity as we are not the primary beneficiary. Because the Trust is not consolidated, we have recorded the debt on our consolidated balance sheets and the related payments are classified as interest expense.

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, our 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 minimum amount of tangible net worth, a 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, we will not during any time when a default is continuing, make distributions with respect to common stock or other equity interests, except to enable the Company to continue to qualify as a REIT for Federal income tax purposes. As of March 31, 2015 and December 31, 2014, we were in compliance with all such covenants.

Interest Rate Risk

We are exposed to changes in interest rates primarily from our variable rate debt. Our exposure to interest rate changes are managed through either the use of interest rate derivatives instruments and/or through our variable rate debt and preferred equity investments. A hypothetical 100 basis point increase in interest rates along the entire interest rate curve for 2015 would increase our annual interest cost, net of interest income from variable rate debt and preferred equity investments, by $11.5 million and would increase our share of joint venture annual interest cost by $7.1 million.

We recognize most derivatives on the balance sheet at fair value. Derivatives that are not hedges are adjusted to fair value through income. If a derivative is considered 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 hedged 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 is immediately recognized in earnings.

Our long-term debt of $6.0 billion bears interest at fixed rates, and therefore the fair value of these instruments is affected by changes in the market interest rates. Our variable rate debt and variable rate joint venture debt as of March 31, 2015 bore interest based on a spread of LIBOR plus 90 basis points to LIBOR plus 935 basis points.

Contractual Obligations

Refer to our 2014 Annual Report on Form 10-K for a discussion of our contractual obligations. There have been no material changes, outside the ordinary course of business, to these contractual obligations during the three months ended March 31, 2015.

Off-Balance Sheet Arrangements

We have off-balance sheet investments, including joint ventures and debt and preferred equity investments. These investments all have varying ownership structures. Substantially all of our joint venture arrangements are accounted for under the equity method of accounting as we have the ability to exercise significant influence, but not control, over the operating and financial decisions of these joint venture arrangements. Our off-balance sheet arrangements are discussed in Note 5, "Debt and Preferred Equity Investments" and Note 6, "Investments in Unconsolidated Joint Ventures" in the accompanying consolidated financial statements.

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Capital Expenditures

We estimate that for the year ending December 31, 2015, we expect to incur $229.1 million of recurring capital expenditures and $145.5 million of development or redevelopment expenditures, net of loan reserves, (including tenant improvements and leasing commissions) on existing consolidated properties, and our share of capital expenditures at our joint venture properties, net of loan reserves, will be $74.9 million. We expect to fund these capital expenditures with operating cash flow, additional property level mortgage financings and cash on hand. Future property acquisitions may require substantial capital investments for refurbishment and leasing costs. We expect our capital needs over the next twelve months and thereafter will be met through a combination of cash on hand, net cash provided by operations, borrowings, potential asset sales or additional equity or debt issuances.

Dividends/Distributions

We expect to pay dividends to our stockholders based on the distributions we receive from our Operating Partnership primarily from property revenues net of operating expenses or, if necessary, from working capital.

To maintain our qualification as a REIT, we must pay annual dividends to our stockholders of at least 90% of our REIT taxable income, determined before taking into consideration the dividends paid deduction and net capital gains. We intend to continue to pay regular quarterly dividends to our stockholders. Based on our current annual dividend rate of $2.40 per share, we would pay $239.0 million in dividends to SL Green's common stockholders on an annual basis. Before we pay any dividend, whether for Federal income tax purposes or otherwise, which would only be paid out of available cash to the extent permitted under the 2012 credit facility and senior unsecured notes, we must first meet both our operating requirements and scheduled debt service on our mortgages and loans payable.

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. The Service Corporation 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 income, was $1.0 million and $0.9 million for the three months ended March 31, 2015 and 2014, respectively. We also recorded expenses of $4.0 million and $3.8 million for the three months ended March 31, 2015 and 2014, respectively, for these services (excluding services provided directly to tenants).

Management Fees

S.L. Green Management Corp., a consolidated entity, receives property management fees from an entity in which Stephen L. Green owns an interest. We received management fees from such entity of $127,200 and $104,800 for the three months ended March 31, 2015 and 2014, respectively.

Insurance

We maintain “all-risk” property and rental value coverage (including coverage regarding the perils of flood, earthquake and terrorism) within three property insurance portfolios and liability insurance. The first property portfolio maintains a blanket limit of $950.0 million per occurrence, including terrorism, for the majority of the New York City properties in our portfolio and expires December 31, 2015. The second portfolio maintains a limit of $700.0 million per occurrence, including terrorism, for several New York City properties and the majority of the Suburban properties and expires December 31, 2015. Each of these policies includes $100.0 million of flood coverage, with a lower sublimit for locations in high hazard flood zones. A third blanket property policy covers most of our residential assets and maintains a limit of $380 million per occurrence, including terrorism, for our residential properties and expires January 31, 2016. We maintain two liability policies which cover all our properties and provide limits of $201.0 million per occurrence and in the aggregate per location. The liability policies expire on October 31, 2015 and January 31, 2016 and cover our commercial and residential, respectively. Additional coverage may be purchased on a stand-alone basis for certain assets.

In October 2006, we formed a wholly-owned taxable REIT subsidiary, Belmont Insurance Company, or Belmont, to act as a captive insurance company and be one of the elements of our overall insurance program. Belmont is a subsidiary of ours. Belmont was formed in an effort to, among other reasons, stabilize to some extent the fluctuations of insurance market conditions. Belmont is licensed in New York to write Terrorism, NBCR (nuclear, biological, chemical, and radiological), General Liability, Environmental Liability, and D&O coverage.

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The Terrorism Risk Insurance Act, or TRIA, which was enacted in November 2002, was renewed December 31, 2005 and again on December 31, 2007. Congress extended TRIA, now called TRIPRA (Terrorism Risk Insurance Program Reauthorization and Extension Act of 2007) until December 31, 2014. TRIPRA was not renewed by Congress and expired on December 31, 2014. However, on January 12, 2015, TRIPRA was reauthorized until December 31, 2020 (Terrorism Insurance Program Reauthorization and Extension Act of 2015). The law extends the federal Terrorism Insurance Program that requires insurance companies to offer terrorism coverage and provides for compensation for insured losses resulting from acts of certified terrorism, subject to the current program trigger of $100.0 million, which will increase by $20 million per annum, commencing December 31, 2015. Our debt instruments, consisting of a non-recourse mortgage note secured by one of our properties, our 2012 credit facility, senior unsecured notes and other corporate obligations, as well as ground leases, contain customary covenants requiring us to maintain insurance. Although we believe that we currently maintain sufficient insurance coverage to satisfy these obligations, there is no assurance that in the future we will be able to procure coverage at a reasonable cost. In such instances, there can be no assurance that the lenders or ground lessors under these instruments will not take the position that a total or partial exclusion from “all-risk” insurance coverage for losses due to terrorist acts is a breach of these debt and ground lease instruments allowing the lenders or ground lessors to declare an event of default and accelerate repayment of debt or recapture of ground lease positions. In addition, if lenders prevail in asserting that we are required to maintain full coverage for these risks, it could result in substantially higher insurance premiums.

We own Belmont and the accounts of Belmont are part of our consolidated financial statements. If Belmont experiences a loss and is required to pay under its insurance policy, we would ultimately record the loss to the extent of Belmont’s required payment. Therefore, insurance coverage provided by Belmont should not be considered as the equivalent of third-party insurance, but rather as a modified form of self-insurance.

We monitor all properties that are subject to triple net leases to ensure that tenants are providing adequate coverage. Certain joint ventures may be covered under policies separate from our policies, at coverage limits which we deem to be adequate. We continually monitor these policies. Although we consider our insurance coverage to be appropriate, in the event of a major catastrophe, we may not have sufficient coverage to replace certain properties.

Funds From Operations

Funds From Operations, or FFO, is a widely recognized measure of REIT performance. We compute FFO in accordance with standards established by the National Association of Real Estate Investment Trusts, or NAREIT, which may not be comparable to FFO reported by other REITs that do not compute FFO in accordance with the NAREIT definition, or that interpret the NAREIT definition differently than we do. The revised White Paper on FFO approved by the Board of Governors of NAREIT in April 2002, and as subsequently amended, defines FFO as net income (loss) (computed in accordance with Generally Accepted Accounting Principles, or GAAP), excluding gains (or losses) from debt restructurings, sales of properties and real estate related impairment charges, plus real estate related depreciation and amortization and after adjustments for unconsolidated partnerships and joint ventures. We present FFO because we consider it an important supplemental measure of our operating performance and believe that it is frequently used by securities analysts, investors and other interested parties in the evaluation of REITs, particularly those that own and operate commercial office properties.

We also use FFO as one of several criteria to determine performance-based bonuses for members of our senior management. FFO is intended to exclude GAAP historical cost depreciation and amortization of real estate and related assets, which assumes that the value of real estate assets diminishes ratably over time. Historically, however, real estate values have risen or fallen with market conditions. Because FFO excludes depreciation and amortization unique to real estate, gains and losses from property dispositions and extraordinary items, it provides a performance measure that, when compared year over year, reflects the impact to operations from trends in occupancy rates, rental rates, operating costs, interest costs, providing perspective not immediately apparent from net income. FFO does not represent cash generated from operating activities in accordance with GAAP and should not be considered as an alternative to net income (determined in accordance with GAAP), as an indication of our financial performance or to cash flow from operating activities (determined in accordance with GAAP) as a measure of our liquidity, nor is it indicative of funds available to fund our cash needs, including our ability to make cash distributions.

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FFO for the three months ended March 31, 2015 and 2014, are as follows (in thousands):

	Three Months Ended March 31,
	2015			2014
Net income attributable to SL Green common stockholders	$	43,277		$	146,090
Add:
Depreciation and amortization	108,337			86,515
Discontinued operations depreciation adjustments	—			3,297
Joint venture depreciation and noncontrolling interest adjustments	8,622			12,987
Net income attributable to noncontrolling interests	7,670			6,219
Less:
Gain on sale of discontinued operations	12,983			—
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—			104,640
Depreciation on non-rental real estate assets	525			514
Funds from Operations attributable to SL Green common stockholders and noncontrolling interests	$	154,398		$	149,954
Cash flows provided by operating activities	$	90,959		$	88,148
Cash flows provided by (used in) investing activities	$	230,297		$	(71,801	)
Cash flows (used in) provided by financing activities	$	(271,895	)	$	224,123

Inflation

Substantially all of our office leases provide for separate real estate tax and operating expense escalations as well as operating expense recoveries based on increases in the Consumer Price Index or other measures such as porters' wage. In addition, many of the leases provide for fixed base rent increases. We believe that inflationary increases will be at least partially offset by the contractual rent increases and expense escalations described above.

Accounting Standards Updates

The Accounting Standards Updates are discussed in Note 2, "Significant Accounting Policies-Accounting Standards Updates" in the accompanying consolidated financial statements.

Forward-Looking Information

This report includes certain statements that may be deemed to be "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 and are intended to be covered by the safe harbor provisions thereof. All statements, other than statements of historical facts, included in this report that address activities, events or developments that we expect, believe or anticipate will or may occur in the future, including such matters as future capital expenditures, dividends and acquisitions (including the amount and nature thereof), development trends of the real estate industry and the Manhattan, Brooklyn, Westchester County, Connecticut, Long Island and New Jersey office markets, business strategies, expansion and growth of our operations and other similar matters, are forward-looking statements. These forward-looking statements are based on certain assumptions and analyses made by us in light of our experience and our perception of historical trends, current conditions, expected future developments and other factors we believe are appropriate.

Forward-looking statements are not guarantees of future performance and actual results or developments may differ materially, and we caution you not to place undue reliance on such statements. Forward-looking statements are generally identifiable by the use of the words "may," "will," "should," "expect," "anticipate," "estimate," "believe," "intend," "project," "continue," or the negative of these words, or other similar words or terms.

Forward-looking statements contained in this report are subject to a number of risks and uncertainties that may cause our actual results, performance or achievements to be materially different from future results, performance or achievements expressed or implied by forward-looking statements made by us. These risks and uncertainties include:

• the effect of general economic, business and financial conditions, and their effect on the New York City real estate market in particular;

• dependence upon certain geographic markets;

• risks of real estate acquisitions, dispositions, developments and redevelopment, including the cost of construction delays and cost overruns;

• risks relating to debt and preferred equity investments;

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• availability and creditworthiness of prospective tenants and borrowers;

• bankruptcy or insolvency of a major tenant or a significant number of smaller tenants;

• adverse changes in the real estate markets, including reduced demand for office space, increasing vacancy, and increasing availability of sublease space;

• availability of capital (debt and equity);

• unanticipated increases in financing and other costs, including a rise in interest rates;

• our ability to comply with financial covenants in our debt instruments;

• our ability to maintain its status as a REIT;

• risks of investing through joint venture structures, including the fulfillment by our partners of their financial obligations;

• the threat of terrorist attacks;

• our ability to obtain adequate insurance coverage at a reasonable cost and the potential for losses in excess of our insurance coverage, including as a result of environmental contamination; and,

• legislative, regulatory and/or safety requirements adversely affecting REITs and the real estate business including costs of compliance with the Americans with Disabilities Act, the Fair Housing Act and other similar laws and regulations.

Other factors and risks to our business, many of which are beyond our control, are described in other sections of this report and in our other filings with the SEC. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of future events, new information or otherwise.

67

ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

For quantitative and qualitative disclosure about market risk, see Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operation - Market Risk" in this Quarterly Report on Form 10-Q for the three months ended March 31, 2015 for the Company and the Operating Partnership and Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations—Market Rate Risk" in the Annual Report on Form 10-K for the year ended December 31, 2014 for the Company and the Operating Partnership. Our exposures to market risk have not changed materially since December 31, 2014.

ITEM 4.    CONTROLS AND PROCEDURES

SL GREEN REALTY CORP.

Evaluation of Disclosure Controls and Procedures

The Company maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, and that such information is accumulated and communicated to the Company's management, including the Company's Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure based closely on the definition of "disclosure controls and procedures" in Rule 13a-15(e) of the Exchange Act. Notwithstanding the foregoing, a control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that it will detect or uncover failures within the Company to disclose material information otherwise required to be set forth in our periodic reports. Also, the Company has investments in certain unconsolidated entities. As the Company does not control these entities, its disclosure controls and procedures with respect to such entities are necessarily substantially more limited than those the Company maintains with respect to its consolidated subsidiaries.

As of the end of the period covered by this report, the Company carried out an evaluation, under the supervision and with the participation of the Company's management, including our Chief Executive Officer and our Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures. Based upon that evaluation as of the end of the period covered by this report, the Company's Chief Executive Officer and Chief Financial Officer concluded that its disclosure controls and procedures were effective to give reasonable assurances to the timely collection, evaluation and disclosure of information relating to the Company that would potentially be subject to disclosure under the Exchange Act and the rules and regulations promulgated thereunder.

Changes in Internal Control over Financial Reporting

There have been no significant changes in the Company's internal control over financial reporting during the quarter ended March 31, 2015 that have materially affected, or are reasonably likely to materially affect, its internal control over financial reporting.

SL GREEN OPERATING PARTNERSHIP, L.P.

Evaluation of Disclosure Controls and Procedures

The Operating Partnership maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in the Operating Partnership's Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to the Operating Partnership's management, including the Chief Executive Officer and Chief Financial Officer of the Operating Partnership's general partner, as appropriate, to allow timely decisions regarding required disclosure based closely on the definition of “disclosure controls and procedures” in Rule 13a-15(e) of the Exchange Act. Notwithstanding the foregoing, a control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that it will detect or uncover failures within the Operating Partnership to disclose material information otherwise required to be set forth in the Operating Partnership's periodic reports. Also, the Operating Partnership has investments in certain unconsolidated entities. As the Operating Partnership does not control these entities, the Operating Partnership's disclosure controls and procedures with respect to such entities are necessarily substantially more limited than those it maintains with respect to its consolidated subsidiaries.

As of the end of the period covered by this report, the Operating Partnership carried out an evaluation, under the supervision and with the participation of management, including the Chief Executive Officer and Chief Financial Officer of the Operating Partnership's general partner, of the effectiveness of the design and operation of the Operating Partnership's disclosure controls and procedures. Based upon that evaluation as of the end of the period covered by this report, the Chief Executive Officer and Chief Financial Officer of the Operating Partnership's general partner concluded that the Operating Partnership's disclosure controls and procedures were effective to give reasonable assurances to the timely collection, evaluation and disclosure of information relating to the Operating Partnership that would potentially be subject to disclosure under the Exchange Act and the rules and regulations promulgated thereunder.

68

Changes in Internal Control over Financial Reporting

There have been no significant changes in the Operating Partnership's internal control over financial reporting during the quarter ended March 31, 2015 that have materially affected, or are reasonably likely to materially affect, its internal control over financial reporting.

69

PART II

ITEM 3.    LEGAL PROCEEDINGS

As of March 31, 2015, the Company and the Operating Partnership were not involved in any material litigation nor, to management's knowledge, was any material litigation threatened against us or our portfolio other than routine litigation arising in the ordinary course of business or litigation that is adequately covered by insurance.

ITEM 1A.    RISK FACTORS

There have been no material changes to the risk factors disclosed in "Part I. Item 1A. Risk Factors" in the 2014 Annual Report on Form 10-K of the Company and the Operating Partnership.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4.    MINE SAFETY DISCLOSURES

Not Applicable.

ITEM 5.    OTHER INFORMATION

None.

70

ITEM 6. EXHIBITS

10.1	Fourteenth Amendment to the First Amended and Restated Agreement of Limited Partnership of SL Green Operating Partnership, L.P., filed with the SEC on July 2, 2014.
10.2	Fifteenth Amendment to the First Amended and Restated Agreement of Limited Partnership of SL Green Operating Partnership, L.P., filed with the SEC on July 2, 2014.
10.3	Employment Agreement, dated as of October 30, 2014 between SL Green Realty Corp. and Matthew DiLiberto.
31.1	Certification by the Chief Executive Officer of the Company pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.2	Certification by the Chief Financial Officer of the Company pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.3	Certification by the Chief Executive Officer of the Company, the sole general partner of the Operating Partnership pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.4	Certification by the Chief Financial Officer of the Company, the sole general partner of the Operating Partnership pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.1	Certification by the Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.2	Certification by the Chief Financial Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.3	Certification by the Chief Executive Officer of the Company, the sole general partner of the Operating Partnership pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith.
32.4	Certification by the Chief Financial Officer of the Company, the sole general partner of the Operating Partnership pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith.
101.10	The following financial statements from SL Green Realty Corp. and SL Green Operating Partnership L.P.’s Quarterly Report on Form 10-Q for the three months ended March 31, 2015, formatted in XBRL: (i) Consolidated Balance Sheets (unaudited), (ii) Consolidated Statements of Income (unaudited), (iii) Consolidated Statements of Comprehensive Income (unaudited), (iv) Consolidated Statement of Equity (unaudited), (v) Consolidated Statement of Capital (unaudited) (vi) Consolidated Statements of Cash Flows (unaudited), and (vii) Notes to Consolidated Financial Statements (unaudited), detail tagged and filed herewith.

71

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	SL GREEN REALTY CORP.
	By:	/s/ MATTHEW J. DILIBERTO
Dated: May 8, 2015		Matthew J. DiLiberto Chief Financial Officer

72

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	SL GREEN OPERATING PARTNERSHIP, L.P.
	By:	SL Green Realty Corp.
		/s/ MATTHEW J. DILIBERTO
Dated: May 8, 2015	By:	Matthew J. DiLiberto Chief Financial Officer

73

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Marc Holliday, certify that:

1. I have reviewed this quarterly report on Form 10-Q of SL Green Realty Corp. (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 8, 2015
	/s/ Marc Holliday
Name:	Marc Holliday
Title:	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Matthew J. DiLiberto, certify that:

1. I have reviewed this quarterly report on Form 10-Q of SL Green Realty Corp. (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 8, 2015
	/s/ Matthew J. DiLiberto
Name:	Matthew J. DiLiberto
Title:	Chief Financial Officer

EX-31.3

Exhibit 31.3

CERTIFICATION

I, Marc Holliday, certify that:

1. I have reviewed this quarterly report on Form 10-Q of SL Green Operating Partnership, L.P. (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 8, 2015
	/s/ Marc Holliday
Name:	Marc Holliday
Title:	Chief Executive Officer
	of SL Green Realty Corp., the
	general partner of the registrant

EX-31.4

Exhibit 31.4

CERTIFICATION

I, Matthew J. DiLiberto, certify that:

1. I have reviewed this quarterly report on Form 10-Q of SL Green Operating Partnership, L.P. (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

	/s/ Matthew J. DiLiberto
Name:	Matthew J. DiLiberto
Title:	Chief Financial Officer
	of SL Green Realty Corp., the
	general partner of the registrant
May 8, 2015

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of SL Green Realty Corp. (the “Company”) on Form 10-Q as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Marc Holliday, Chief Executive Officer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/ Marc Holliday
Name:	Marc Holliday
Title:	Chief Executive Officer
May 8, 2015

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of SL Green Realty Corp. (the “Company”) on Form 10-Q as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Matthew J. DiLiberto, Chief Financial Officer of the Company, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/ Matthew J. DiLiberto
Name:	Matthew J. DiLiberto
Title:	Chief Financial Officer
May 8, 2015

EX-32.3

Exhibit 32.3

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of SL Green Operating Partnership, L.P. (the “Operating Partnership”) on Form 10-Q as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Marc Holliday, Chief Executive Officer of SL Green Realty Corp, the sole general partner of the Operating Partnership, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership.

	/s/ Marc Holliday
Name:	Marc Holliday
Title:	Chief Executive Officer
	of SL Green Realty Corp., the
	general partner of the Operating Partnership
May 8, 2015

EX-32.4

Exhibit 32.4

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of SL Green Operating Partnership, L.P. (the “Operating Partnership”) on Form 10-Q as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Matthew J. DiLiberto, Chief Financial Officer of SL Green Realty Corp, the sole general partner of the Operating Partnership, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership.

	/s/ Matthew J. DiLiberto
Name:	Matthew J. DiLiberto
Title:	Chief Financial Officer
	of SL Green Realty Corp., the
	general partner of the Operating Partnership
May 8, 2015

XML

Deferred Costs (Tables)

3 Months Ended

Mar. 31, 2015

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of components of deferred costs

Deferred costs at March 31, 2015 and 2014 consisted of the following (in thousands):

	March 31, 2015			December 31, 2014
Deferred leasing	$	389,935		$	385,555
Deferred financing	195,474			193,776
	585,409			579,331
Less accumulated amortization	(258,854		)	(251,369		)
Deferred costs, net	$	326,555		$	327,962

XML

Organization and Basis of Presentation (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 sqft building	Dec. 31, 2014
Real estate properties
Number of Properties	118
Approximate Square Feet (sqft)	34,848,769
Weighted Average Occupancy (as a percent)	88.70%
Carrying Value, Net of Discounts and Deferred Origination Fees	$ 1,548,739	$ 1,408,804
Number of shares to be received on redemption of one unit of limited partnership interests (shares)	1
Commercial properties
Real estate properties
Number of Properties	97
Approximate Square Feet (sqft)	31,999,838
Weighted Average Occupancy (as a percent)	88.00%
Residential
Real estate properties
Number of Properties	21
Approximate Square Feet (sqft)	2,848,931
Weighted Average Occupancy (as a percent)	96.40%
Managed office properties
Real estate properties
Approximate Square Feet (sqft)	336,201
Consolidated properties
Real estate properties
Number of Properties	76
Approximate Square Feet (sqft)	25,805,770
Consolidated properties | Commercial properties
Real estate properties
Number of Properties	72
Approximate Square Feet (sqft)	25,003,572
Consolidated properties | Residential
Real estate properties
Number of Properties	4
Approximate Square Feet (sqft)	802,198
Unconsolidated properties
Real estate properties
Number of Properties	42
Approximate Square Feet (sqft)	9,042,999
Unconsolidated properties | Commercial properties
Real estate properties
Number of Properties	25
Approximate Square Feet (sqft)	6,996,266
Unconsolidated properties | Residential
Real estate properties
Number of Properties	17
Approximate Square Feet (sqft)	2,046,733
Manhattan
Real estate properties
Number of Properties	61
Approximate Square Feet (sqft)	26,208,697
Weighted Average Occupancy (as a percent)	89.70%
Manhattan | Office
Real estate properties
Number of Properties	30
Approximate Square Feet (sqft)	21,905,160
Weighted Average Occupancy (as a percent)	96.00%
Manhattan | Retail
Real estate properties
Number of Properties	16
Approximate Square Feet (sqft)	683,363
Weighted Average Occupancy (as a percent)	90.70%
Manhattan | Development/Redevelopment
Real estate properties
Number of Properties	13
Approximate Square Feet (sqft)	2,836,644
Weighted Average Occupancy (as a percent)	38.00%
Manhattan | Fee Interest
Real estate properties
Number of Properties	2
Approximate Square Feet (sqft)	783,530
Weighted Average Occupancy (as a percent)	100.00%
Manhattan | Residential
Real estate properties
Number of Properties	20
Approximate Square Feet (sqft)	2,782,320
Weighted Average Occupancy (as a percent)	96.80%
Manhattan | Consolidated properties
Real estate properties
Number of Properties	42
Approximate Square Feet (sqft)	20,500,172
Manhattan | Consolidated properties | Office
Real estate properties
Number of Properties	23
Approximate Square Feet (sqft)	18,429,045
Manhattan | Consolidated properties | Retail
Real estate properties
Number of Properties	9
Approximate Square Feet (sqft)	403,735
Manhattan | Consolidated properties | Development/Redevelopment
Real estate properties
Number of Properties	8
Approximate Square Feet (sqft)	883,862
Manhattan | Consolidated properties | Fee Interest
Real estate properties
Number of Properties	2
Approximate Square Feet (sqft)	783,530
Manhattan | Consolidated properties | Residential
Real estate properties
Number of Properties	3
Approximate Square Feet (sqft)	735,587
Manhattan | Consolidated properties | Dual property type, retail portion
Real estate properties
Approximate Square Feet (sqft)	270,132
Manhattan | Consolidated properties | Dual property type, residential portion
Real estate properties
Approximate Square Feet (sqft)	222,855
Manhattan | Unconsolidated properties
Real estate properties
Number of Properties	19
Approximate Square Feet (sqft)	5,708,525
Manhattan | Unconsolidated properties | Office
Real estate properties
Number of Properties	7
Approximate Square Feet (sqft)	3,476,115
Manhattan | Unconsolidated properties | Retail
Real estate properties
Number of Properties	7
Approximate Square Feet (sqft)	279,628
Manhattan | Unconsolidated properties | Development/Redevelopment
Real estate properties
Number of Properties	5
Approximate Square Feet (sqft)	1,952,782
Manhattan | Unconsolidated properties | Fee Interest
Real estate properties
Number of Properties	0
Approximate Square Feet (sqft)	0
Manhattan | Unconsolidated properties | Residential
Real estate properties
Number of Properties	17
Approximate Square Feet (sqft)	2,046,733
Suburban
Real estate properties
Number of Properties	36
Approximate Square Feet (sqft)	5,791,141
Weighted Average Occupancy (as a percent)	80.30%
Suburban | Office
Real estate properties
Number of Properties	31
Approximate Square Feet (sqft)	5,587,500
Weighted Average Occupancy (as a percent)	80.80%
Suburban | Retail
Real estate properties
Number of Properties	1
Approximate Square Feet (sqft)	52,000
Weighted Average Occupancy (as a percent)	100.00%
Suburban | Development/Redevelopment
Real estate properties
Number of Properties	4
Approximate Square Feet (sqft)	151,641
Weighted Average Occupancy (as a percent)	57.50%
Suburban | Residential
Real estate properties
Number of Properties	1
Approximate Square Feet (sqft)	66,611
Weighted Average Occupancy (as a percent)	84.40%
Suburban | Consolidated properties
Real estate properties
Number of Properties	30
Approximate Square Feet (sqft)	4,503,400
Suburban | Consolidated properties | Office
Real estate properties
Number of Properties	27
Approximate Square Feet (sqft)	4,365,400
Suburban | Consolidated properties | Retail
Real estate properties
Number of Properties	1
Approximate Square Feet (sqft)	52,000
Suburban | Consolidated properties | Development/Redevelopment
Real estate properties
Number of Properties	2
Approximate Square Feet (sqft)	86,000
Suburban | Consolidated properties | Residential
Real estate properties
Number of Properties	1
Approximate Square Feet (sqft)	66,611
Suburban | Unconsolidated properties
Real estate properties
Number of Properties	6
Approximate Square Feet (sqft)	1,287,741
Suburban | Unconsolidated properties | Office
Real estate properties
Number of Properties	4
Approximate Square Feet (sqft)	1,222,100
Suburban | Unconsolidated properties | Retail
Real estate properties
Number of Properties	0
Approximate Square Feet (sqft)	0
Suburban | Unconsolidated properties | Development/Redevelopment
Real estate properties
Number of Properties	2
Approximate Square Feet (sqft)	65,641
Suburban | Unconsolidated properties | Residential
Real estate properties
Number of Properties	0
Approximate Square Feet (sqft)	0

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Accumulated Other Comprehensive Loss of the Operating Partnership (Tables) (SL Green Operating Partnership)

3 Months Ended

Mar. 31, 2015

SL Green Operating Partnership

Accumulated Other Comprehensive Income (Loss) [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss)

The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of March 31, 2015 (in thousands):

	Net unrealized loss on derivative instruments(1)			SLGOP’s share of joint venture net unrealized loss on derivative instruments(2)			Unrealized gain and (loss) on marketable securities		Total
Balance at December 31, 2014	(9,845		)	(100		)	2,689		(7,256		)
Other comprehensive (loss) income before reclassifications	(7,521		)	(1,237		)	650		(8,108		)
Amounts reclassified from accumulated other comprehensive income	2,747			331			—		3,078
Balance at March 31, 2015	$	(14,619	)	$	(1,006	)	$	3,339	$	(12,286	)

____________________________________________________________________

(1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of income. As of March 31, 2015 and December 31, 2014, the deferred net losses from these terminated hedges, which is included in accumulated other comprehensive loss relating to net unrealized loss on derivative instrument, was $11.7 million and $12.2 million, respectively.

(2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net income from unconsolidated joint ventures in the respective consolidated statements of income.

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Mortgages and Other Loans Payable (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Nov. 30, 2012	Oct. 31, 2014	Feb. 28, 2015	Jan. 31, 2015
Debt Instrument [Line Items]
Total fixed rate debt	$ 4,609,043,000	$ 4,736,709,000
Total floating rate debt	750,000,000	1,103,942,000
Total mortgages and other loans payable	5,359,043,000	5,840,651,000
Maximum facility capacity			1,600,000,000.0
Book value of collateral	7,900,000,000	8,200,000,000
Series J Preferred Stock
Debt Instrument [Line Items]
Total fixed rate debt	4,000,000	4,000,000
Temporary Equity, Carrying Amount, Attributable to Noncontrolling Interest	4,000,000
Preferred units, shares outstanding	4,000
Preferred Units (as a percent)	3.75%
Preferred Units, liquidation preference (in dollars per unit)	$ 1,000.00
Master repurchase agreement
Debt Instrument [Line Items]
Total floating rate debt	0	100,000,000
Maximum facility capacity	300,000,000.0
500 West Putnam Avenue
Debt Instrument [Line Items]
Total fixed rate debt	22,823,000	22,968,000
Landmark Square
Debt Instrument [Line Items]
Total fixed rate debt	80,848,000	81,269,000
485 Lexington Avenue
Debt Instrument [Line Items]
Total fixed rate debt	450,000,000	450,000,000
120 West 45th Street
Debt Instrument [Line Items]
Total fixed rate debt	170,000,000	170,000,000
762 Madison Avenue
Debt Instrument [Line Items]
Total fixed rate debt	8,001,000	8,045,000
885 Third Avenue
Debt Instrument [Line Items]
Total fixed rate debt	267,650,000	267,650,000
1745 Broadway
Debt Instrument [Line Items]
Total fixed rate debt	16,000,000	16,000,000
388-390 Greenwich Street
Debt Instrument [Line Items]
Total fixed rate debt	1,004,000,000	1,004,000,000
Total floating rate debt	446,000,000	446,000,000
388-390 Greenwich Street | Swap One
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	3.80%
Total fixed rate debt	504,000,000
388-390 Greenwich Street | Swap Two
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)				2.69%
Total fixed rate debt				500,000,000
One Madison Avenue
Debt Instrument [Line Items]
Total fixed rate debt	560,025,000	565,742,000
100 Church Street
Debt Instrument [Line Items]
Total fixed rate debt	227,713,000	228,612,000
919 Third Avenue
Debt Instrument [Line Items]
Total fixed rate debt	500,000,000	500,000,000
Interest in property (as a percent)	51.00%
400 East 57th Street
Debt Instrument [Line Items]
Total fixed rate debt	68,588,000	68,896,000
400 East 58th Street
Debt Instrument [Line Items]
Total fixed rate debt	29,395,000	29,527,000
420 Lexington Avenue
Debt Instrument [Line Items]
Total fixed rate debt	300,000,000	300,000,000
1515 Broadway
Debt Instrument [Line Items]
Total fixed rate debt	900,000,000	900,000,000
711 Third Avenue
Debt Instrument [Line Items]
Total fixed rate debt	0	120,000,000
248-252 Bedford Avenue
Debt Instrument [Line Items]
Total floating rate debt	29,000,000	29,000,000
220 East 42nd Street
Debt Instrument [Line Items]
Total floating rate debt	275,000,000	275,000,000
180 Maiden Lane
Debt Instrument [Line Items]
Total floating rate debt	$ 0	$ 253,942,000
Weighted Average | Series J Preferred Stock
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	3.75%
Weighted Average | Master repurchase agreement
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	3.43%
Weighted Average | 500 West Putnam Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	5.52%
Weighted Average | Landmark Square
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.00%
Weighted Average | 485 Lexington Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	5.61%
Weighted Average | 120 West 45th Street
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	6.12%
Weighted Average | 762 Madison Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	3.81%				3.86%	3.75%
Weighted Average | 885 Third Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	6.26%
Weighted Average | 1745 Broadway
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.81%
Weighted Average | 388-390 Greenwich Street
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	3.25%
Interest rate, floating rate debt (as a percent)	1.93%
Weighted Average | One Madison Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	5.91%
Weighted Average | 100 Church Street
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.68%
Weighted Average | 919 Third Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	5.12%
Weighted Average | 400 East 57th Street
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.13%
Weighted Average | 400 East 58th Street
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.13%
Weighted Average | 420 Lexington Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	3.99%
Weighted Average | 1515 Broadway
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	3.93%
Weighted Average | 248-252 Bedford Avenue
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	1.68%
Weighted Average | 220 East 42nd Street
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	1.78%

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Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Principles of Consolidation
Commercial real estate properties	$ 12,004,790	$ 12,163,976
Mortgages and other loans payable	5,359,043	5,586,709
Assets held for sale	0	462,430
Liabilities related to assets held for sale	0	266,873
Consolidated VIEs
Principles of Consolidation
Commercial real estate properties	198,500	198,400
Mortgages and other loans payable	106,000	106,500
Commercial properties | Consolidated VIEs
Principles of Consolidation
Assets held for sale		445,000
Liabilities related to assets held for sale		$ 253,900

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Stockholders' Equity of the Company (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Authorized capital stock (shares)	260,000,000
Authorized shares, par value (in dollars per share)	$ 0.01
Common stock, shares authorized	160,000,000	160,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Excess stock, shares authorized (shares)	75,000,000
Excess stock, par value (in dollars per share)	$ 0.01
Preferred stock, shares authorized (shares)	25,000,000
Preferred stock, par value (in dollars per share)	$ 0.01
Shares issued (shares)	99,532,817
Excess shares issued (shares)	0

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Share-based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of weighted average assumptions used to estimate the grant date fair value of options granted

The fair value of each stock option granted is estimated on the date of grant using the Black-Scholes option pricing model based on historical information with the following weighted average assumptions for grants during the year ended December 31, 2014. The Company did not grant any stock options during the three months ended March 31, 2015.

	March 31, 2015	December 31, 2014
Dividend yield	N/A	1.60	%
Expected life of option	N/A	3.6 years
Risk-free interest rate	N/A	1.29	%
Expected stock price volatility	N/A	33.97	%

Summary of the status of stock options and changes during the period

A summary of the status of the Company's stock options as of March 31, 2015 and December 31, 2014 and changes during the three months ended March 31, 2015 and the year ended December 31, 2014 are as follows:

	March 31, 2015					December 31, 2014
	Options Outstanding			Weighted Average Exercise Price		Options Outstanding			Weighted Average Exercise Price
Balance at beginning of year	1,462,726			$	87.98	1,765,034			$	83.24
Granted	—			—		102,050			119.12
Exercised	(136,936		)	75.27		(348,156		)	72.76
Lapsed or cancelled	(8,767		)	103.57		(56,202		)	90.03
Balance at end of year	1,317,023			$	89.19	1,462,726			$	87.98
Options exercisable at end of year	624,057			$	87.82	428,951			$	90.32
Weighted average fair value of options granted during the year	$	—				$	2,841,678

Summary of restricted stock and charges during the period

A summary of the Company's restricted stock as of March 31, 2015 and December 31, 2014 and charges during the three months ended March 31, 2015 and the year ended December 31, 2014 are as follows:

	March 31, 2015		December 31, 2014
Balance at beginning of period	3,000,979		2,994,197
Granted	2,603		9,550
Cancelled	—		(2,768		)
Balance at end of period	3,003,582		3,000,979
Vested during the period	84,581		75,043
Compensation expense recorded	$	1,936,853	$	9,658,019
Weighted average fair value of restricted stock granted during the period	$	333,153	$	1,141,675

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Organization and Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of commercial office properties

As of March 31, 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, Long Island, Westchester County, Connecticut and New Jersey, which are collectively known as the Suburban properties:

		Consolidated			Unconsolidated		Total
Location	Type	Number of Properties		Approximate Square Feet	Number of Properties	Approximate Square Feet	Number of Properties	Approximate Square Feet	Weighted Average Occupancy(1)
Commercial:
Manhattan	Office	23		18,429,045	7	3,476,115	30	21,905,160	96.0	%
	Retail	9	(2)	403,735	7	279,628	16	683,363	90.7	%
	Development/Redevelopment	8		883,862	5	1,952,782	13	2,836,644	38.0	%
	Fee Interest	2		783,530	—	—	2	783,530	100.0	%
		42		20,500,172	19	5,708,525	61	26,208,697	89.7	%
Suburban	Office	27		4,365,400	4	1,222,100	31	5,587,500	80.8	%
	Retail	1		52,000	—	—	1	52,000	100.0	%
	Development/Redevelopment	2		86,000	2	65,641	4	151,641	57.5	%
		30		4,503,400	6	1,287,741	36	5,791,141	80.3	%
Total commercial properties		72		25,003,572	25	6,996,266	97	31,999,838	88.0	%
Residential:
Manhattan	Residential	3	(2)	735,587	17	2,046,733	20	2,782,320	96.8	%
Suburban	Residential	1		66,611	—	—	1	66,611	84.4	%
Total residential properties		4		802,198	17	2,046,733	21	2,848,931	96.4	%
Total portfolio		76		25,805,770	42	9,042,999	118	34,848,769	88.7	%

____________________________________________________________________

(1) The weighted average occupancy for commercial properties represents the total occupied 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 March 31, 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.

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Stockholders' Equity of the Company (Details 2) (USD $)	3 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Aug. 31, 2012	Dec. 31, 2014	Jun. 30, 2014	Feb. 28, 2015
Stockholders' Equity
Net proceeds from sale of common stock	$ 120,597,000	$ 24,000
Common stock, shares authorized	160,000,000			160,000,000
At-the-Market Equity Offering Programs
Stockholders' Equity
Aggregate value of the shares of common stock to be sold					300,000,000.0
Issuance of common stock (in shares)	895,956
Net proceeds from sale of common stock	113,400,000
New At-the-Market Equity offering programs
Stockholders' Equity
Aggregate value of the shares of common stock to be sold	300,000,000.0
Issuance of common stock (in shares)	56,680
Net proceeds from sale of common stock	7,500,000
Aggregate value of shares available for issuance	292,500,000
Series I Preferred Stock
Stockholders' Equity
Preferred stock, shares outstanding	9,200,000			9,200,000
Dividend rate preferred units (as a percent)	6.50%
Perpetual Preferred stock, liquidation preference (in dollars per share)	$ 25.00			25.00
Perpetual Preferred stock, annual dividends per share (in dollars per share)	$ 1.625
Net proceeds from sale of preferred stock			221,900,000
Dividend Reinvestment and Stock Purchase Plan (DRIP)
Stockholders' Equity
Issuance of common stock (in shares)	775,161
Net proceeds from sale of common stock	$ 99,500,000
Common stock, shares authorized						3,500,000

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Corporate Indebtedness (Details 3) (USD $)	1 Months Ended	3 Months Ended
	Jun. 30, 2005	Mar. 31, 2015	Apr. 30, 2015
Scheduled Amortization and Principal Repayments
Remaining 2015		$ 22,889,000
2016		402,979,000
2017		1,311,400,000
2018		330,462,000
2019		931,726,000
Thereafter		5,122,908,000
Total amortization of debt and principal repayments		8,122,364,000
Trust Preferred Securities
Debt Instrument [Line Items]
Proceeds from Issuance of Debt	100,000,000.0
Coupon Rate (as a percent)		5.61%
Number of Years from Issuance of Debt for which Fixed Rate of Interest will be in Force		10 years
Scheduled Amortization and Principal Repayments
Remaining 2015		0
2016		0
2017		0
2018		0
2019		0
Thereafter		100,000,000
Total amortization of debt and principal repayments		100,000,000
Mortgages and other loans payable
Scheduled Amortization
Remaining 2015		22,882,000
2016		47,360,000
2017		61,063,000
2018		64,462,000
2019		70,409,000
Thereafter		200,403,000
Total amortization of debt		466,579,000
Principal Repayments and Joint Venture Debt
Remaining 2015		0
2016		100,311,000
2017		895,329,000
2018		16,000,000
2019		28,317,000
Thereafter		3,852,505,000
Total principal repayments		4,892,462,000
2012 Credit Facility
Scheduled Amortization and Principal Repayments
Remaining 2015		0
2016		0
2017		0
2018		0
2019		0
Thereafter		520,000,000
Total amortization of debt and principal repayments		520,000,000
Unsecured Term Loan
Scheduled Amortization and Principal Repayments
Remaining 2015		0
2016		0
2017		0
2018		0
2019		833,000,000
Thereafter		0
Total amortization of debt and principal repayments		833,000,000
Senior Unsecured Notes
Scheduled Amortization and Principal Repayments
Remaining 2015		7,000
2016		255,308,000
2017		355,008,000
2018		250,000,000
2019		0
Thereafter		450,000,000
Total amortization of debt and principal repayments		1,310,323,000
Joint venture
Principal Repayments and Joint Venture Debt
Remaining 2015		39,407,000
2016		534,026,000
2017		582,755,000
2018		2,196,000
2019		104,688,000
Thereafter		446,744,000
Total principal repayments		$ 1,709,816,000
LIBOR | Trust Preferred Securities
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)		1.25%
LIBOR | Unsecured Term Loan
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)		1.40%
Senior unsecured notes | 4.00% Senior unsecured notes maturing on June 15, 2025
Debt Instrument [Line Items]
Coupon Rate (as a percent)		4.00%
Subsequent Event | Senior unsecured notes | 4.00% Senior unsecured notes maturing on June 15, 2025
Debt Instrument [Line Items]
Coupon Rate (as a percent)			4.00%

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Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Initial term of non cancellable operating leases, minimum (in years)	1 year
Capital lease
Remaining 2015	$ 109
2016	170
2017	291
2018	291
2019	315
Thereafter	56,568
Total minimum lease payments	57,744
Less amount representing interest	(36,827)
Capital lease obligations	20,917
Non-cancellable operating leases
Remaining 2015	22,869
2016	30,612
2017	30,845
2018	30,845
2019	30,862
Thereafter	720,698
Total minimum lease payments	$ 866,731

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Significant Accounting Policies (Details 3) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Investment in Marketable Securities
Marketable securities	$ 47,716,000	$ 39,429,000
Mortgage-backed securities
Investment in Marketable Securities
Cost basis	40,000,000	32,400,000
Level 1 | Equity Securities
Investment in Marketable Securities
Marketable securities	4,287,000	4,332,000
Level 2 | Mortgage-backed securities
Investment in Marketable Securities
Marketable securities	43,429,000	35,097,000
Fair Value
Investment in Marketable Securities
Marketable securities	$ 47,716,000	$ 39,429,000

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Noncontrolling Interests on the Company's Consolidated Financial Statements (Details) (USD $)	3 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Feb. 28, 2015	Dec. 31, 2014 unit	Jan. 31, 2012	Aug. 31, 2014
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Balance at beginning of period	$ 469,524,000
Distributions	(112,100,000)
Redemption of common units	(3,520,000)
Net income	1,743,000	4,729,000
Accumulated other comprehensive income allocation	(200,000)	(42,000)
Balance at end of period	498,881,000
Series M Preferred Units
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Dividend rate preferred units (as a percent)			3.75%
SL Green Operating Partnership
Organization
Noncontrolling interest in the operating partnership (as a percent)	3.78%			3.92%
Number of units of operating partnership owned by the noncontrolling interest unit holders (shares)	3,912,944			3,973,016
Shares of common stock reserved for issuance upon redemption of units of limited partnership interest in operating partnership (shares)	3,912,944
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Balance at beginning of period	469,524,000	265,476,000		265,476,000
Distributions	(2,349,000)			(7,849,000)
Issuance of common units	22,114,000			56,469,000
Redemption of common units	(37,407,000)			(31,653,000)
Net income	1,743,000			18,467,000
Accumulated other comprehensive income allocation	(200,000)			175,000
Fair value adjustment	45,456,000			168,439,000
Balance at end of period	498,881,000			469,524,000
SL Green Operating Partnership | Series G Preferred Units
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Number of preferred units issued (in shares)					1,902,000
Dividend rate preferred units (as a percent)					4.50%
Liquidation preference of preferred units (in dollars per share)					$ 25.00
Annual dividends on preferred units (in dollars per share)	$ 1.125
Operating partnership common stock value use for conversion of preferred units (in dollars per share)	$ 88.50
Number of company common stock issue on redemption of operation partnership common units	1
SL Green Operating Partnership | Series F Preferred Units
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Number of preferred units issued (in shares)	60
Mandatory liquidation preference (in dollars per share)	$ 1,000.00
SL Green Operating Partnership | Series K Preferred Units
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Number of preferred units issued (in shares)						563,954
Dividend rate preferred units (as a percent)	3.50%
Liquidation preference of preferred units (in dollars per share)	$ 25.00
Annual dividends on preferred units (in dollars per share)	$ 0.875
Operating partnership common stock value use for conversion of preferred units (in dollars per share)	$ 134.67
Preferred Units, shares authorized	700,000
SL Green Operating Partnership | Series L Preferred Units
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Number of preferred units issued (in shares)						378,634
Dividend rate preferred units (as a percent)	4.00%
Liquidation preference of preferred units (in dollars per share)	$ 25.00
Annual dividends on preferred units (in dollars per share)	$ 1.00
Preferred Units, shares authorized	500,000
SL Green Operating Partnership | Series M Preferred Units
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Number of preferred units issued (in shares)			1,600,000
Dividend rate preferred units (as a percent)	3.75%
Liquidation preference of preferred units (in dollars per share)	$ 25.00
Annual dividends on preferred units (in dollars per share)	$ 0.9375
Preferred Units, shares authorized	1,600,000

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Accumulated Other Comprehensive Loss of the Operating Partnership (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) of the Operating Partnership [Roll Forward]
Beginning Balance		$ (6,980,000)
Ending Balance	(11,810,000)	(6,980,000)
Deferred net losses from terminated hedges	11,300,000	11,800,000
SL Green Operating Partnership
Accumulated Other Comprehensive Income (Loss) of the Operating Partnership [Roll Forward]
Beginning Balance	(7,256,000)
Other comprehensive (loss) income before reclassifications	(8,108,000)
Amounts reclassified from accumulated other comprehensive income	3,078,000
Ending Balance	(12,286,000)
Deferred net losses from terminated hedges	11,700,000	12,200,000
Net unrealized loss on derivative instruments | SL Green Operating Partnership
Accumulated Other Comprehensive Income (Loss) of the Operating Partnership [Roll Forward]
Beginning Balance	(9,845,000)
Other comprehensive (loss) income before reclassifications	(7,521,000)
Amounts reclassified from accumulated other comprehensive income	2,747,000
Ending Balance	(14,619,000)
Unrealized gain and (loss) on marketable securities | SL Green Operating Partnership
Accumulated Other Comprehensive Income (Loss) of the Operating Partnership [Roll Forward]
Beginning Balance	2,689,000
Other comprehensive (loss) income before reclassifications	650,000
Amounts reclassified from accumulated other comprehensive income	0
Ending Balance	3,339,000
Joint venture | Net unrealized loss on derivative instruments | SL Green Operating Partnership
Accumulated Other Comprehensive Income (Loss) of the Operating Partnership [Roll Forward]
Beginning Balance	(100,000)
Other comprehensive (loss) income before reclassifications	(1,237,000)
Amounts reclassified from accumulated other comprehensive income	331,000
Ending Balance	$ (1,006,000)

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Partners' Capital of the Operating Partnership (Details)	Mar. 31, 2015	Dec. 31, 2014
Common Stock
Stockholders' Equity
Units outstanding (units)	99,533,000	97,325,000
SL Green Operating Partnership
Stockholders' Equity
Noncontrolling interest in the operating partnership (as a percent)	3.78%	3.92%
Number of units of operating partnership owned by the noncontrolling interest unit holders (units)	3,912,944	3,973,016
SL Green Operating Partnership | Series I Preferred Units
Stockholders' Equity
Units outstanding (units)	9,200,000
SL Green Operating Partnership | Common Stock
Stockholders' Equity
Units outstanding (units)	99,532,817

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Fair Value Measurements (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Fair Value of Financial Instruments
Marketable securities	$ 47,716,000	$ 39,429,000
Interest rate swap agreements (included in other assets)	3,000	2,174,000
Interest rate swap agreements (included in accrued interest payable and other liabilities)	16,983,000	14,728,000
Debt and preferred equity investments	1,548,739,000	1,408,804,000
Carrying Value
Fair Value of Financial Instruments
Fixed rate debt	6,016,084,000	6,140,786,000
Variable rate debt	2,073,000,000	2,291,943,000
Total	8,089,084,000	8,432,729,000
Fair Value
Fair Value of Financial Instruments
Marketable securities	47,716,000	39,429,000
Total	8,698,913,000	8,881,188,000
Estimated fair value of debt and preferred equity investments, low end of range	1,700,000,000	1,500,000,000
Estimated fair value of debt and preferred equity investments, high end of range	1,900,000,000	1,800,000,000
Level 1
Fair Value of Financial Instruments
Interest rate swap agreements (included in other assets)	0	0
Interest rate swap agreements (included in accrued interest payable and other liabilities)	0	0
Level 2
Fair Value of Financial Instruments
Interest rate swap agreements (included in other assets)	3,000	2,174,000
Interest rate swap agreements (included in accrued interest payable and other liabilities)	16,983,000	14,728,000
Level 3
Fair Value of Financial Instruments
Marketable securities	0	0
Interest rate swap agreements (included in other assets)	0	0
Interest rate swap agreements (included in accrued interest payable and other liabilities)	0	0
Level 3 | Carrying Value
Fair Value of Financial Instruments
Debt and preferred equity investments	1,548,739,000	1,408,804,000
Level 3 | Fair Value
Fair Value of Financial Instruments
Fixed rate debt	6,582,767,000	6,565,236,000
Variable rate debt	2,116,146,000	2,315,952,000
Equity Securities | Level 1
Fair Value of Financial Instruments
Marketable securities	4,287,000	4,332,000
Mortgage-backed securities | Level 2
Fair Value of Financial Instruments
Marketable securities	$ 43,429,000	$ 35,097,000

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Noncontrolling Interests on the Company's Consolidated Financial Statements - Preferred Unit Activity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Rollforward Analysis of Preferred Unit Activity
Redemption of preferred units	$ (3,520)
SL Green Operating Partnership
Rollforward Analysis of Preferred Unit Activity
Issuance of preferred units	22,114	56,469
Redemption of preferred units	(37,407)	(31,653)
SL Green Operating Partnership | Preferred Units
Rollforward Analysis of Preferred Unit Activity
Balance at beginning of period	71,115	49,550
Issuance of preferred units	40,000	23,565
Redemption of preferred units	(200)	(2,000)
Balance at end of period	$ 110,915	$ 71,115

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Corporate Indebtedness (Details) (USD $)	1 Months Ended			3 Months Ended
	Jan. 31, 2015	Nov. 30, 2014	Mar. 31, 2014	Mar. 31, 2015	Dec. 31, 2014	Nov. 30, 2012
Corporate Indebtedness
Credit facility, maximum borrowing capacity						$ 1,600,000,000.0
Outstanding under line of credit facility				520,000,000	385,000,000
Term loan
Corporate Indebtedness
Credit facility, maximum borrowing capacity			783,000,000	833,000,000
Increase in credit facility		50,000,000	383,000,000
Decrease in basis points (as a percent)	0.20%		0.25%
Decrease in facility fee (as a percent)	0.05%
Effective rate (as a percent)				1.65%
Term loan | LIBOR
Corporate Indebtedness
Interest rate added to base rate (as a percent)				1.40%
Term loan | LIBOR | Minimum
Corporate Indebtedness
Interest rate added to base rate (as a percent)				0.95%
Term loan | LIBOR | Maximum
Corporate Indebtedness
Interest rate added to base rate (as a percent)				1.90%
Revolving credit facility
Corporate Indebtedness
Credit facility, maximum borrowing capacity				1,200,000,000.0
Maximum borrowing capacity, optional expansion				1,500,000,000.0
Effective rate (as a percent)				1.43%
Outstanding under line of credit facility				520,000,000
Revolving credit facility | Minimum
Corporate Indebtedness
Unused balance fee (as a percent)				0.125%
Facility fee (as a percent)				0.25%
Revolving credit facility | Maximum
Corporate Indebtedness
Unused balance fee (as a percent)				0.30%
Revolving credit facility | LIBOR
Corporate Indebtedness
Interest rate added to base rate (as a percent)				1.25%
Revolving credit facility | LIBOR | Minimum
Corporate Indebtedness
Interest rate added to base rate (as a percent)				0.875%
Revolving credit facility | LIBOR | Maximum
Corporate Indebtedness
Interest rate added to base rate (as a percent)				1.55%
2012 Credit Facility
Corporate Indebtedness
Letters of credit				107,600,000
Ability to borrow under line of credit facility				572,400,000

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Share-based Compensation

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-based Compensation

Share-based Compensation

We have stock-based employee and director compensation plans. Our employees are compensated through the Operating Partnership. Under each plan, whenever the Company issues common or preferred stock, the Operating Partnership issues an equivalent number of units of limited partnership interest of a corresponding class to the Company.

Third Amended and Restated 2005 Stock Option and Incentive Plan

The Third Amended and Restated 2005 Stock Option and Incentive Plan, or the 2005 Plan, was approved by the Company's board of directors in April 2013 and its stockholders in June 2013 at the Company's annual meeting of stockholders. The 2005 Plan authorizes the issuance of stock options, stock appreciation rights, unrestricted and restricted stock, phantom shares, dividend equivalent rights and other equity-based awards. Subject to adjustments upon certain corporate transactions or events, awards with respect to up to a maximum of 17,130,000 fungible units may be granted under the 2005 Plan. Currently, different types of awards count against the limit on the number of fungible units differently, with (1) full-value awards (i.e., those that deliver the full value of the award upon vesting, such as restricted stock) counting as 2.76 fungible units per share subject to such award (2) stock options, stock appreciation rights and other awards that do not deliver full value and expire five years from the date of grant counting as 0.77 fungible units per share subject to such award and (3) all other awards (e.g., ten-year stock options) counting as 1.0 fungible units per share subject to such award. Awards granted under the 2005 Plan prior to the approval of the second amendment and restatement in June 2010 and third amendment and restatement in June 2013 continue to count against the fungible unit limit based on the ratios that were in effect at the time such awards were granted, which may be different than the current ratios. As a result, depending on the types of awards issued, the 2005 Plan may result in the issuance of more or less than 17,130,000 shares. If a stock option or other award granted under the 2005 Plan expires or terminates, the common stock subject to any portion of the award that expires or terminates without having been exercised or paid, as the case may be, will again become available for the issuance of additional awards. Shares of SL Green's common stock distributed under the 2005 Plan may be treasury shares or authorized but unissued shares. Currently, unless the 2005 Plan has been previously terminated by the Company's board of directors, new awards may be granted under the 2005 Plan until June 13, 2023, which is the tenth anniversary of the date that the 2005 Plan was most recently approved by the Company's stockholders. As of March 31, 2015, 1.5 million fungible units were available for issuance under the 2005 Plan after reserving for shares underlying outstanding restricted stock units, phantom stock units granted pursuant to our Non-Employee Directors' Deferral Program and LTIP Units, including, among others, outstanding LTIP Units issued under our 2011 Long-Term Outperformance Plan.

Options are granted under the plan at the fair market value on the date of grant and, subject to employment, generally expire five or ten years from the date of grant, are not transferable other than on death, and generally vest in one to five years commencing one year from the date of grant.

The fair value of each stock option granted is estimated on the date of grant using the Black-Scholes option pricing model based on historical information with the following weighted average assumptions for grants during the year ended December 31, 2014. The Company did not grant any stock options during the three months ended March 31, 2015.

	March 31, 2015	December 31, 2014
Dividend yield	N/A	1.60	%
Expected life of option	N/A	3.6 years
Risk-free interest rate	N/A	1.29	%
Expected stock price volatility	N/A	33.97	%

A summary of the status of the Company's stock options as of March 31, 2015 and December 31, 2014 and changes during the three months ended March 31, 2015 and the year ended December 31, 2014 are as follows:

	March 31, 2015					December 31, 2014
	Options Outstanding			Weighted Average Exercise Price		Options Outstanding			Weighted Average Exercise Price
Balance at beginning of year	1,462,726			$	87.98	1,765,034			$	83.24
Granted	—			—		102,050			119.12
Exercised	(136,936		)	75.27		(348,156		)	72.76
Lapsed or cancelled	(8,767		)	103.57		(56,202		)	90.03
Balance at end of year	1,317,023			$	89.19	1,462,726			$	87.98
Options exercisable at end of year	624,057			$	87.82	428,951			$	90.32
Weighted average fair value of options granted during the year	$	—				$	2,841,678

All options were granted with strike prices ranging from $20.67 to $137.18. The remaining weighted average contractual life of the options outstanding was 3.97 and the remaining average contractual life of the options exercisable was 3.77.

During the three months ended March 31, 2015 and 2014, we recognized $2.0 million and $2.1 million of compensation expense, respectively, for these options. As of March 31, 2015, there was $12.0 million of total unrecognized compensation cost related to unvested stock options, which is expected to be recognized over a weighted average period of three years.

Stock-based Compensation

Effective January 1, 1999, the Company implemented a deferred compensation plan, or the Deferred Plan, where shares issued under the Deferred Plan were granted to certain employees, including our executives and vesting will occur annually upon the completion of a service period or our meeting established financial performance criteria. Annual vesting occurs at rates ranging from 15% to 35% once performance criteria are reached.

A summary of the Company's restricted stock as of March 31, 2015 and December 31, 2014 and charges during the three months ended March 31, 2015 and the year ended December 31, 2014 are as follows:

	March 31, 2015		December 31, 2014
Balance at beginning of period	3,000,979		2,994,197
Granted	2,603		9,550
Cancelled	—		(2,768		)
Balance at end of period	3,003,582		3,000,979
Vested during the period	84,581		75,043
Compensation expense recorded	$	1,936,853	$	9,658,019
Weighted average fair value of restricted stock granted during the period	$	333,153	$	1,141,675

The fair value of restricted stock that vested during the three months ended March 31, 2015 and the year ended December 31, 2014 was $7.2 million and $5.5 million, respectively. As of March 31, 2015, there was $10.5 million of total unrecognized compensation cost related to unvested restricted stock, which is expected to be recognized over a weighted average period of 1.9 years.

For the three months ended March 31, 2015 and 2014, $1.6 million and $1.6 million, respectively, was capitalized to assets associated with compensation expense related to our long-term compensation plans, restricted stock and stock options.

We granted LTIP Units, which include bonus, time-based and performance based awards, with a fair value of$25.4 million and $33.2 million as of March 31, 2015and December 31,2014, respectively. The grant date fair value of the LTIP Unit awards was calculated in accordance with ASC 718. A third party consultant determined the fair value of the LTIP Units to have a discount from SL Green's common stock price. The discount was calculated by considering the inherent uncertainty that the LTIP Units will reach parity with other common partnership units and the illiquidity due to transfer restrictions. As of March 31, 2015, there was $10.4 million of total unrecognized compensation expense related to the time-based and performance based awards, which is expected to be recognized over a weighted average period of 1.1 years. During the three months ended March 31, 2015 and 2014, we recorded compensation expense related to bonus, time-based and performance based awards of $13.2 million and $8.1 million, respectively.

2010 Notional Unit Long-Term Compensation Plan

In December 2009, the compensation committee of the Company's board of directors approved the general terms of the SL Green Realty Corp. 2010 Notional Unit Long-Term Compensation Program, or the 2010 Long-Term Compensation Plan. The 2010 Long-Term Compensation Plan is a long-term incentive compensation plan pursuant to which award recipients could earn, in the aggregate, from $15.0 million up to $75.0 million of LTIP Units in the Operating Partnership based on the Company's stock price appreciation over three years beginning on December 1, 2009; provided that, if maximum performance had been achieved, $25.0 million of awards could be earned at any time after the beginning of the second year and an additional $25.0 million of awards could be earned at any time after the beginning of the third year. In order to achieve maximum performance under the 2010 Long-Term Compensation Plan, the Company's aggregate stock price appreciation during the performance period had to equal or exceed 50%. The compensation committee determined that maximum performance had been achieved at or shortly after the beginning of each of the second and third years of the performance period and for the full performance period and, accordingly, 366,815 LTIP Units, 385,583 LTIP Units and 327,416 LTIP Units were earned under the 2010 Long-Term Compensation Plan in December 2010, 2011 and 2012, respectively. Substantially in accordance with the original terms of the program, 50% of these LTIP Units vested on December 17, 2012 (accelerated from the original January 1, 2013 vesting date), 25% of these LTIP Units vested on December 11, 2013 (accelerated from the original January 1, 2014 vesting date) and the remainder vested on January 1, 2015 based on continued employment. In accordance with the terms of the 2010 Long-Term Compensation Plan, distributions were not paid on any LTIP Units until they were earned, at which time we paid all distributions that would have been paid on the earned LTIP Units since the beginning of the performance period.

The cost of the 2010 Long-Term Compensation Plan ($31.7 million, subject to forfeitures) was amortized into earnings through the final vesting period of January 1, 2015. We recorded compensation expense of $0.3 million during the three months ended March 31, 2014 related to the 2010 Long-Term Compensation Plan.

2011 Outperformance Plan

In August 2011, the compensation committee of the Company's board of directors approved the general terms of the SL Green Realty Corp. 2011 Outperformance Plan, or the 2011 Outperformance Plan. Participants in the 2011 Outperformance Plan could earn, in the aggregate, up to $85.0 million of LTIP Units in the Operating Partnership based on our total return to stockholders for the three-year period beginning September 1, 2011. Under the 2011 Outperformance Plan, participants were entitled to share in a "performance pool" comprised of LTIP Units with a value equal to 10% of the amount by which our total return to stockholders during the three-year period exceeded a cumulative total return to stockholders of 25%, subject to the maximum of $85.0 million of LTIP Units; provided that if maximum performance was achieved, one-third of each award could be earned at any time after the beginning of the second year and an additional one-third of each award could be earned at any time after the beginning of the third year. LTIP Units earned under the 2011 Outperformance Plan are subject to continued vesting requirements, with 50% of any awards earned vested on August 31, 2014 and the remaining 50% vesting on August 31, 2015, subject to continued employment with us through such dates. Participants were not entitled to distributions with respect to LTIP Units granted under the 2011 Outperformance Plan unless and until they were earned. For LTIP Units that were earned, each participant was also entitled to the distributions that would have been paid had the number of earned LTIP Units been issued at the beginning of the performance period, with such distributions being paid in the form of additional LTIP Units. Thereafter, distributions are to be paid currently with respect to all earned LTIP Units, whether vested or unvested. In June 2014, the compensation committee determined that maximum performance had been achieved during the third year of the performance period and, accordingly, 560,908 LTIP Units, representing two-thirds of each award, were earned, subject to vesting, under the 2011 Outperformance Plan. In September 2014, the compensation committee determined that maximum performance had been achieved for the full three-year performance period and, accordingly, 280,454 LTIP units, representing the final third of each award, were earned, subject to vesting, under the 2011 Outperformance Plan.

The cost of the 2011 Outperformance Plan ($26.8 million, subject to forfeitures) will be amortized into earnings through the final vesting period. We recorded compensation expense of $0.7 million and $1.9 million during the three months ended March 31, 2015 and 2014, respectively, related to the 2011 Outperformance Plan.

2014 Outperformance Plan

In August 2014, the compensation committee of the Company's board of directors approved the general terms of the SL Green Realty Corp. 2014 Outperformance Plan, or the 2014 Outperformance Plan. Participants in the 2014 Outperformance Plan may earn, in the aggregate, up to 610,000 LTIP Units in our Operating Partnership based on our total return to stockholders for the three-year period beginning September 1, 2014. For each individual award, two-thirds of the LTIP Units may be earned based on the Company’s absolute total return to stockholders and one-third of the LTIP Units may be earned based on relative total return to stockholders compared to the constituents of the MSCI REIT Index. Awards earned based on absolute total return to stockholders will be determined independently of awards earned based on relative total return to stockholders. In the event the Company’s performance reaches either threshold before the end of the three-year performance period, a pro-rata portion of the maximum award may be earned. For each component, if the Company’s performance reaches the maximum threshold beginning with the 19th month of the performance period, participants will earn one-third of the maximum award that may be earned for that component. If the Company’s performance reaches the maximum threshold during the third year of the performance period for a component, participants will earn two-thirds (or an additional one-third) of the maximum award that may be earned for that component. LTIP Units earned under the 2014 Outperformance Plan will be subject to continued vesting requirements, with 50% of any awards earned vesting on August 31, 2017 and the remaining 50% vesting on August 31, 2018, subject to continued employment with us through such dates. Participants will not be entitled to distributions with respect to LTIP Units granted under the 2014 Outperformance Plan unless and until they are earned. If LTIP Units are earned, each participant will also be entitled to the distributions that would have been paid had the number of earned LTIP Units been issued at the beginning of the performance period, with such distributions being paid in the form of cash or additional LTIP Units. Thereafter, distributions will be paid currently with respect to all earned LTIP Units, whether vested or unvested.

The cost of the 2014 Outperformance Plan ($27.9 million, subject to forfeitures), based on the portion of the 2014 Outperformance Plan granted as of March 31, 2015, will be amortized into earnings through the final vesting period. We recorded compensation expense of $1.4 million during the three months ended March 31, 2015 related to the 2014 Outperformance Plan.

Deferred Compensation Plan for Directors

Under our Non-Employee Director's Deferral Program, which commenced July 2004, the Company's non-employee directors may elect to defer up to 100% of their annual retainer fee, chairman fees, meeting fees and annual stock grant. Unless otherwise elected by a participant, fees deferred under the program shall be credited in the form of phantom stock units. The program provides that a director's phantom stock units generally will be settled in an equal number of shares of common stock upon the earlier of (i) the January 1 coincident with or next following such director's termination of service from the Board of Directors or (ii) a change in control by us, as defined by the program. Phantom stock units are credited to each non-employee director quarterly using the closing price of SL Green's common stock on the first business day of the respective quarter. Each participating non-employee director is also credited with dividend equivalents or phantom stock units based on the dividend rate for each quarter, which are either paid in cash currently or credited to the director’s account as additional phantom stock units.

During the three months ended March 31, 2015, 5,613 phantom stock units were earned and 5,230 shares of common stock were issued to our board of directors. We recorded compensation expense of $1.3 million during the three months ended March 31, 2015 related to the Deferred Compensation Plan. As of March 31, 2015, there were 81,262 phantom stock units outstanding pursuant to our Non-Employee Director's Deferral Program.

Employee Stock Purchase Plan

In 2007, the Company's board of directors adopted the 2008 Employee Stock Purchase Plan, or ESPP, to encourage our employees to increase their efforts to make our business more successful by providing equity-based incentives to eligible employees. The ESPP is intended to qualify as an "employee stock purchase plan" under Section 423 of the Code, and has been adopted by the board to enable our eligible employees to purchase the Company's shares of common stock through payroll deductions. The ESPP became effective on January 1, 2008 with a maximum of 500,000 shares of the common stock available for issuance, subject to adjustment upon a merger, reorganization, stock split or other similar corporate change. The Company filed a registration statement on Form S-8 with the SEC with respect to the ESPP. The common stock is offered for purchase through a series of successive offering periods. Each offering period will be three months in duration and will begin on the first day of each calendar quarter, with the first offering period having commenced on January 1, 2008. The ESPP provides for eligible employees to purchase the common stock at a purchase price equal to 85% of the lesser of (1) the market value of the common stock on the first day of the offering period or (2) the market value of the common stock on the last day of the offering period. The ESPP was approved by our stockholders at our 2008 annual meeting of stockholders. As of March 31, 2015, 81,955 shares of SL Green's common stock had been issued under the ESPP.

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Financial Instruments: Derivatives and Hedging (Tables)

3 Months Ended

Mar. 31, 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 consolidated derivative financial instruments at March 31, 2015 based on Level 2 information. The notional value is an indication of the extent of our involvement in these instruments at that time, but does not represent exposure to credit, interest rate or market risks (amounts in thousands).

	Notional Value		Strike Rate		Effective Date	Expiration Date	Balance Sheet Location	Fair Value
Interest Rate Cap - Sold	$	504,000	4.750	%	May 2014	May 2016	Other Assets	$	(1	)
Interest Rate Cap	504,000		4.750	%	May 2014	May 2016	Other Liabilities	1
Interest Rate Cap	500,000		4.750	%	October 2014	May 2016	Other Assets	1
Interest Rate Cap - Sold	500,000		4.750	%	November 2014	May 2016	Other Liabilities	(1		)
Interest Rate Cap	446,000		4.750	%	October 2014	May 2016	Other Assets	1
Interest Rate Cap	263,426		6.000	%	November 2013	November 2015	Other Assets	—
Interest Rate Cap	137,500		4.000	%	October 2013	September 2015	Other Assets	—
Interest Rate Swap	200,000		0.938	%	October 2014	December 2017	Other Liabilities	(326		)
Interest Rate Swap	150,000		0.940	%	October 2014	December 2017	Other Liabilities	(251		)
Interest Rate Swap	150,000		0.940	%	October 2014	December 2017	Other Liabilities	(251		)
Interest Rate Swap	144,000		2.236	%	December 2012	December 2017	Other Liabilities	(5,108		)
Interest Rate Swap	86,400		1.948	%	December 2012	December 2017	Other Liabilities	(2,407		)
Interest Rate Swap	72,000		2.310	%	December 2012	December 2017	Other Liabilities	(2,696		)
Interest Rate Swap	72,000		1.345	%	December 2012	December 2017	Other Liabilities	(862		)
Interest Rate Swap	72,000		2.310	%	December 2012	December 2017	Other Liabilities	(2,696		)
Interest Rate Swap	57,600		1.990	%	December 2012	December 2017	Other Liabilities	(1,669		)
Interest Rate Swap	30,000		2.295	%	July 2010	June 2016	Other Liabilities	(682		)
Interest Rate Swap	8,018		0.852	%	February 2015	February 2017	Other Liabilities	(33		)
								$	(16,980	)

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

The following table presents the effect of our derivative financial instruments and our share of our joint ventures' derivative financial instruments that are designated and qualify as hedging instruments on the consolidated statements of income for the three months ended March 31, 2015 and 2014, respectively (in thousands):

	Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)						Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	Amount of Loss  Reclassified from Accumulated Other Comprehensive Loss  into Income (Effective Portion)				Location of Gain Recognized in Income on Derivative	Amount of (Loss) or Gain  Recognized into Income (Ineffective Portion)
	Three Months Ended March 31,							Three Months Ended March 31,					Three Months Ended March 31,
Derivative	2015			2014				2015		2014			2015			2014
Interest Rate Swaps/Caps	$	(7,521	)	$	(51	)	Interest expense	$	2,747	$	692	Interest expense	$	(410	)	$	1
Share of unconsolidated joint ventures' derivative instruments	(1,237		)	(1,746		)	Equity in net income from unconsolidated joint ventures	331		1,273		Equity in net income from unconsolidated joint ventures	(16		)	—
	$	(8,758	)	$	(1,797	)		$	3,078	$	1,965		$	(426	)	$	1

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Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2015

Related Party Transactions [Abstract]

Schedule of amounts due from/to related parties

Amounts due from related parties at March 31, 2015 and December 31, 2014 consisted of the following (in thousands):

	March 31, 2015		December 31, 2014
Due from joint ventures	$	1,214	$	1,254
Other	10,874		10,481
Related party receivables	$	12,088	$	11,735

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Related Party Transactions (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Amounts due from/to related parties
Due from joint ventures	$ 1,214,000		$ 1,254,000
Other	10,874,000		10,481,000
Related party receivables	12,088,000		11,735,000
Alliance Building Services
Related Party Transactions
Profit participation from related party	1,000,000	900,000
Payments made for services	4,000,000	3,800,000
Entity with Stephen L Green ownership interest
Related Party Transactions
Property management fees from related party	$ 127,200	$ 104,800

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Debt and Preferred Equity Investments (Tables)

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Summary of debt investments

As of March 31, 2015 and December 31, 2014, we held the following debt investments with an aggregate weighted average current yield of 10.27% at March 31, 2015 (in thousands):

Loan Type	March 31, 2015 Future Funding Obligations		March 31, 2015 Senior Financing		March 31, 2015 Carrying Value (1)		December 31, 2014 Carrying Value (1)		Initial Maturity Date
Fixed Rate Investments:
Jr. Mortgage Participation /Mezzanine Loan	$	—	$	205,000	$	71,291	$	70,688	February 2016
Jr. Mortgage Participation/Mezzanine Loan(2)(3)	—		—		45,863		45,611		Various(2)
Jr. Mortgage Participation	—		133,000		49,000		49,000		June 2016
Mezzanine Loan	—		165,000		71,721		71,656		November 2016
Jr. Mortgage Participation/Mezzanine Loan	—		1,109,000		100,758		98,934		March 2017
Mezzanine Loan(3)	—		—		65,868		65,770		March 2017

Loan Type	March 31, 2015 Future Funding Obligations		March 31, 2015 Senior Financing		March 31, 2015 Carrying Value (1)		December 31, 2014 Carrying Value (1)		Initial Maturity Date
Mezzanine Loan(4)	10,787		502,100		30,264		24,608		June 2017
Mezzanine Loan	—		539,000		49,622		49,629		July 2018
Mortgage Loan(5)	—		—		26,222		26,209		February 2019
Mortgage Loan	—		—		607		637		August 2019
Mezzanine Loan	—		15,000		3,500		3,500		September 2021
Mezzanine Loan(6)	—		90,000		19,932		19,930		November 2023
Mezzanine Loan	—		95,000		30,000		30,000		January 2025
Mezzanine Loan(7)	—		—		—		14,068
Jr. Mortgage Participation(8)	—		—		—		11,934
Total fixed rate	$	10,787	$	2,853,100	$	564,648	$	582,174
Floating Rate Investments:
Mezzanine Loan(9)	611		50,000		44,647		37,322		April 2015
Mortgage/Mezzanine Loan	—		—		109,802		109,527		June 2015
Mezzanine Loan	—		110,000		49,745		49,614		September 2015
Mezzanine Loan	—		775,000		73,699		73,402		March 2016
Mezzanine Loan(10)	—		160,000		22,586		22,573		June 2016
Mezzanine Loan	—		115,000		24,911		24,910		July 2016
Mezzanine Loan(11)	514		172,105		36,917		33,726		November 2016
Mezzanine Loan	—		360,000		99,144		99,023		November 2016
Mezzanine Loan(12)	17,104		117,202		43,906		42,750		December 2016
Mezzanine Loan	2,120		33,915		11,855		11,835		December 2016
Mortgage/Mezzanine Loan(13)	78,975		—		111,613		—		January 2017
Mezzanine Loan	8,781		92,294		20,955		20,651		January 2017
Jr. Mortgage Participation/Mezzanine Loan	2,522		112,393		38,905		38,524		July 2017
Mortgage/Mezzanine Loan	—		—		22,822		22,803		July 2017
Mortgage/Mezzanine Loan	—		—		16,861		16,848		September 2017
Mezzanine Loan	—		60,000		14,869		14,859		November 2017
Mortgage/Mezzanine Loan(14)	795		—		14,868		14,845		December 2017
Jr. Mortgage Participation/Mezzanine Loan	—		55,000		20,528		20,533		July 2018
Mortgage/Mezzanine Loan	—		—		18,159		18,083		February 2019
Mezzanine Loan	—		38,000		21,816		21,807		March 2019
Total floating rate	$	111,422	$	2,250,909	$	818,608	$	693,635
Total	$	122,209	$	5,104,009	$	1,383,256	$	1,275,809

____________________________________________________________________

(1) Carrying value is net of discounts, premiums, original issue discounts and deferred origination fees.

(2) The $22.8 million junior mortgage participation and $23.1 million mezzanine loan mature in February 2016 and May 2016, respectively.

(3) These loans are collateralized by defeasance securities.

(4) Carrying value is net of $41.3 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(5) In September 2014, we acquired a $26.4 million mortgage loan at a $0.2 million discount and a $5.7 million junior mortgage participation at a $5.7 million discount. The junior mortgage participation was a nonperforming loan at acquisition and is currently on non-accrual status.

(6) Carrying value is net of $5.0 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(7) This loan was repaid in February 2015.

(8) This loan was repaid in March 2015.

(9) This loan was repaid in April 2015.

(10) Carrying value is net of $7.4 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(11) This loan was repaid in April 2015.

(12) In February 2015, the maturity date was extended to December 2016.

(13) Carrying value is net of $25.0 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(14) Carrying value is net of $5.1 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

Summary of preferred equity investments

As of March 31, 2015 and 2014, we held the following preferred equity investments with an aggregate weighted average current yield of 10.20% at March 31, 2015 (in thousands):

Type	March 31, 2015 Future Funding Obligations		March 31, 2015 Senior Financing		March 31, 2015 Carrying Value (1)		December 31, 2014 Carrying Value (1)		Initial Mandatory Redemption
Preferred equity(2)	$	—	$	550,000	$	124,907	$	123,041	July 2015
Preferred equity(3)	—		70,000		9,957		9,954		March 2018
Preferred equity	7,100		60,795		30,619		—		November 2018
	$	7,100	$	680,795	$	165,483	$	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) In March 2015, the maturity date was extended to March 2018.

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Schedule of selected results of operations and selected asset information

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

	Real Estate Segment		Debt and Preferred Equity Segment		Total Company
Total revenues
Three months ended:
March 31, 2015	$	354,230	$	42,069	$	396,299
March 31, 2014	308,361		54,084		362,445
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate
Three months ended:
March 31, 2015	$	6,759	$	35,467	$	42,226
March 31, 2014	620		45,583		46,203
Total assets
As of:
March 31, 2015	$	15,514,089	$	1,566,643	$	17,080,732
December 31, 2014	15,671,662		1,424,925		17,096,587

Schedule of reconciliation of income from continuing operations to net income attributable to SL Green common stockholders

The table below reconciles income from continuing operations to net income for the three months ended March 31, 2015 and 2014 (in thousands):

	Three Months Ended March 31,
	2015		2014
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate	$	42,226	$	46,203
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—		104,640
Income from continuing operations	42,226		150,843
Net income from discontinued operations	427		5,769
Gain on sale of discontinued operations	12,983		—
Net income	$	55,636	$	156,612

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Investment in Unconsolidated Joint Ventures (Details 2) (USD $)	1 Months Ended	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Total fixed rate debt	$ 4,609,043,000	$ 4,609,043,000		$ 4,736,709,000
Total floating rate debt	750,000,000	750,000,000		1,103,942,000
Total mortgages and other loans payable	5,359,043,000	5,359,043,000		5,840,651,000
(Loss) gain on early extinguishment of debt	(800,000)	(49,000)	3,000
1745 Broadway
Debt Instrument [Line Items]
Total fixed rate debt	16,000,000	16,000,000		16,000,000
Joint venture
Debt Instrument [Line Items]
Total fixed rate debt	2,851,423,000	2,851,423,000		2,065,264,000
Total floating rate debt	1,503,251,000	1,503,251,000		1,713,440,000
Total mortgages and other loans payable	4,354,674,000	4,354,674,000		3,778,704,000
Maximum amount of loan recourse to entity	18,400,000	18,400,000
Joint venture | 7 Renaissance
Debt Instrument [Line Items]
Total fixed rate debt	2,147,000	2,147,000		2,147,000
Joint venture | 11 West 34th Street
Debt Instrument [Line Items]
Total fixed rate debt	16,825,000	16,825,000		16,905,000
Joint venture | 280 Park Avenue
Debt Instrument [Line Items]
Total fixed rate debt	698,249,000	698,249,000		700,171,000
Joint venture | 1745 Broadway
Debt Instrument [Line Items]
Total fixed rate debt	340,000,000	340,000,000		340,000,000
Joint venture | Jericho Plaza
Debt Instrument [Line Items]
Total fixed rate debt	163,750,000	163,750,000		163,750,000
Joint venture | 800 Third Avenue
Debt Instrument [Line Items]
Total fixed rate debt	20,910,000	20,910,000		20,910,000
Joint venture | 315 West 36th Street
Debt Instrument [Line Items]
Total fixed rate debt	25,000,000	25,000,000		25,000,000
Joint venture | 521 Fifth Avenue
Debt Instrument [Line Items]
Total fixed rate debt	170,000,000	170,000,000		170,000,000
Joint venture | 717 Fifth Avenue | Mortgage loan
Debt Instrument [Line Items]
Committed amount	300,000,000	300,000,000
Joint venture | 717 Fifth Avenue | Mezzanine loans
Debt Instrument [Line Items]
Committed amount	290,000,000	290,000,000
Joint venture | 21 East 66th Street
Debt Instrument [Line Items]
Total fixed rate debt	12,000,000	12,000,000		12,000,000
Total floating rate debt	1,864,000	1,864,000		1,883,000
Joint venture | 3 Columbus Circle
Debt Instrument [Line Items]
Total fixed rate debt	350,000,000	350,000,000		0
Total floating rate debt	0	0		230,974,000
Joint venture | Stonehenge Portfolio
Debt Instrument [Line Items]
Total fixed rate debt	435,416,000	435,416,000		0
Total floating rate debt	10,500,000	10,500,000		0
Joint venture | The Meadows
Debt Instrument [Line Items]
Total floating rate debt	67,350,000	67,350,000		67,350,000
Joint venture | 1552 Broadway
Debt Instrument [Line Items]
Total floating rate debt	188,409,000	188,409,000		184,210,000
Joint venture | 1552 Broadway | Mortgage loan
Debt Instrument [Line Items]
Committed amount	150,000,000	150,000,000
Unfunded amount	1,700,000	1,700,000
Joint venture | 1552 Broadway | Mezzanine loans
Debt Instrument [Line Items]
Committed amount	41,500,000	41,500,000
Unfunded amount	1,400,000	1,400,000
Joint venture | Other loan payable
Debt Instrument [Line Items]
Total floating rate debt	30,000,000	30,000,000		30,000,000
Joint venture | 650 Fifth Avenue
Debt Instrument [Line Items]
Total floating rate debt	65,000,000	65,000,000		65,000,000
Joint venture | 650 Fifth Avenue | Mortgage loan
Debt Instrument [Line Items]
Committed amount	97,000,000	97,000,000
Unfunded amount	32,000,000	32,000,000
Joint venture | 175-225 Third Street
Debt Instrument [Line Items]
Total floating rate debt	40,000,000	40,000,000		40,000,000
Joint venture | 10 East 53rd Street
Debt Instrument [Line Items]
Total floating rate debt	125,000,000	125,000,000		125,000,000
Joint venture | 724 Fifth Avenue
Debt Instrument [Line Items]
Total floating rate debt	275,000,000	275,000,000		275,000,000
Joint venture | 33 Beekman
Debt Instrument [Line Items]
Total floating rate debt	59,370,000	59,370,000		52,283,000
Maximum amount of loan recourse to entity	75,000,000	75,000,000
Joint venture | 600 Lexington Avenue
Debt Instrument [Line Items]
Total floating rate debt	115,758,000	115,758,000		116,740,000
Joint venture | 55 West 46th Street
Debt Instrument [Line Items]
Total floating rate debt	150,000,000	150,000,000		150,000,000
Joint venture | 55 West 46th Street | Mortgage loan
Debt Instrument [Line Items]
Committed amount	190,000,000	190,000,000
Unfunded amount	40,000,000	40,000,000
Joint venture | 121 Greene Street
Debt Instrument [Line Items]
Total floating rate debt	15,000,000	15,000,000		15,000,000
Joint venture | 100 Park Avenue
Debt Instrument [Line Items]
Total floating rate debt	360,000,000	360,000,000		360,000,000
Initial Maturity July 2022 | Joint venture | 717 Fifth Avenue
Debt Instrument [Line Items]
Total fixed rate debt	300,000,000	300,000,000		300,000,000
Initial Maturity July 2024 | Joint venture | 717 Fifth Avenue
Debt Instrument [Line Items]
Total fixed rate debt	317,126,000	317,126,000		314,381,000
Initial Maturity July 2016 | Joint venture | Stonehenge Portfolio
Debt Instrument [Line Items]
Total fixed rate debt	13,500,000	13,500,000
Initial Maturity June 2017 | Joint venture | Stonehenge Portfolio
Debt Instrument [Line Items]
Total fixed rate debt	56,300,000	56,300,000
Initial Maturity November 2017 | Joint venture | Stonehenge Portfolio
Debt Instrument [Line Items]
Total fixed rate debt	35,000,000	35,000,000
Initial Maturity February 2018 | Joint venture | Stonehenge Portfolio
Debt Instrument [Line Items]
Total fixed rate debt	7,400,000	7,400,000
Initial Maturity August 2019 | Joint venture | Stonehenge Portfolio
Debt Instrument [Line Items]
Total fixed rate debt	143,300,000	143,300,000
Initial Maturity June 2024 | Joint venture | Stonehenge Portfolio
Debt Instrument [Line Items]
Total fixed rate debt	$ 179,900,000	$ 179,900,000
Weighted Average | 1745 Broadway
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.81%	4.81%
Weighted Average | Joint venture | 7 Renaissance
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	10.00%	10.00%
Weighted Average | Joint venture | 11 West 34th Street
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.82%	4.82%
Weighted Average | Joint venture | 280 Park Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	6.57%	6.57%
Weighted Average | Joint venture | 1745 Broadway
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	5.68%	5.68%
Weighted Average | Joint venture | Jericho Plaza
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	5.65%	5.65%
Weighted Average | Joint venture | 800 Third Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	6.00%	6.00%
Weighted Average | Joint venture | 315 West 36th Street
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	3.16%	3.16%
Weighted Average | Joint venture | 521 Fifth Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	3.73%	3.73%
Weighted Average | Joint venture | 21 East 66th Street
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	3.60%	3.60%
Interest rate, floating rate debt (as a percent)	2.88%	2.88%
Weighted Average | Joint venture | 3 Columbus Circle
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	2.83%	2.83%
Weighted Average | Joint venture | Stonehenge Portfolio
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.18%	4.18%
Interest rate, floating rate debt (as a percent)	3.25%	3.25%
Weighted Average | Joint venture | The Meadows
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	7.75%	7.75%
Weighted Average | Joint venture | 1552 Broadway
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	4.29%	4.29%
Weighted Average | Joint venture | Other loan payable
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	1.08%	1.08%
Weighted Average | Joint venture | 650 Fifth Avenue
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	3.68%	3.68%
Weighted Average | Joint venture | 175-225 Third Street
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	4.25%	4.25%
Weighted Average | Joint venture | 10 East 53rd Street
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	2.68%	2.68%
Weighted Average | Joint venture | 724 Fifth Avenue
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	2.60%	2.60%
Weighted Average | Joint venture | 33 Beekman
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	2.93%	2.93%
Weighted Average | Joint venture | 600 Lexington Avenue
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	2.26%	2.26%
Weighted Average | Joint venture | 55 West 46th Street
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	2.48%	2.48%
Weighted Average | Joint venture | 121 Greene Street
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	1.68%	1.68%
Weighted Average | Joint venture | 100 Park Avenue
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)	1.93%	1.93%
Weighted Average | Initial Maturity July 2022 | Joint venture | 717 Fifth Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.45%	4.45%
Weighted Average | Initial Maturity July 2024 | Joint venture | 717 Fifth Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	9.00%	9.00%

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Property Acquisitions Schedule of Fair Value of Equity Interest Immediately Before Acquisition Date (Details) (388-390 Greenwich Street, USD $) In Thousands, unless otherwise specified	0 Months Ended		1 Months Ended
	May 15, 2014	May 14, 2014	May 31, 2014	May 15, 2014	May 14, 2014
388-390 Greenwich Street
Property Acquisitions
Contract purchase price	$ 1,584,868	$ 1,585,000		$ 1,584,868	$ 1,585,000
Net consideration funded by us at closing, excluding consideration financed by debt	(208,614)	(208,614)
Debt assumed	(1,162,379)	(1,162,379)
Fair value of retained equity interest		214,007
Equity and/or debt investment held	(148,025)	(148,025)
Other		5,464
Purchase price fair value adjustment		$ 71,446	$ 71,400

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Accumulated Other Comprehensive Loss of the Company (Tables) (SL Green Realty Corp)

3 Months Ended

Mar. 31, 2015

SL Green Realty Corp

Accumulated Other Comprehensive Income (Loss) [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss)

The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of March 31, 2015 (in thousands):

	Net unrealized loss on derivative instruments(1)			SL Green’s share of joint venture net unrealized loss on derivative instruments(2)			Unrealized gain and (loss) on marketable securities		Total
Balance at December 31, 2014	(9,498		)	(95		)	2,613		(6,980		)
Other comprehensive (loss) income before reclassifications	(7,198		)	(1,188		)	597		(7,789		)
Amounts reclassified from accumulated other comprehensive income	2,641			318			—		2,959
Balance at March 31, 2015	$	(14,055	)	$	(965	)	$	3,210	$	(11,810	)

____________________________________________________________________

(1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of income. As of March 31, 2015 and December 31, 2014, the deferred net losses from these terminated hedges, which is included in accumulated other comprehensive loss relating to net unrealized loss on derivative instrument, was $11.3 million and $11.8 million, respectively.

(2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net income from unconsolidated joint ventures in the respective consolidated statements of income.

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Consolidated Statement of Capital Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Increase (Decrease) in Partner's Capital
Acquisition of subsidiary interest from noncontrolling interest	$ (3,520)
Other comprehensive loss	(5,030)
Issuance of common units	22,114
DRSPP proceeds	99,496
Conversion of units of the Operating Partnership to common stock	37,407
Reallocation of capital account relating to sale	(10,144)
Deferred compensation plan and stock award, net	(3,430)
Amortization of deferred compensation plan	6,239
Cash distributions to noncontrolling interests	(112,100)
Common Stock
Increase (Decrease) in Partner's Capital
DRSPP proceeds (in shares)	775
DRSPP proceeds	8
Conversion of units of the Operating Partnership to common stock (in units)	317
Conversion of units of the Operating Partnership to common stock	3
Noncontrolling Interests
Increase (Decrease) in Partner's Capital
Acquisition of subsidiary interest from noncontrolling interest	(11,084)
Reallocation of capital account relating to sale	(10,144)
Cash distributions to noncontrolling interests	(112,100)
SL Green Operating Partnership
Increase (Decrease) in Partner's Capital
Beginning Balance	7,928,740
Net income	54,685
Other comprehensive loss	(5,030)
Preferred distributions	(3,738)
Issuance of common units	22,114
DRSPP proceeds	99,496
Conversion of units of the Operating Partnership to common stock	0
Deferred compensation plan and stock award, net	(3,430)
Amortization of deferred compensation plan	6,239
Contribution to consolidated joint venture interest	0
Contributions - net proceeds from common stock offering	120,597
Contributions - proceeds from stock options exercised	10,344
Cash distributions to noncontrolling interests	(112,100)
Cash distributions declared ($0.60 per common unit, none of which represented a return of capital for federal income tax purposes)	(61,996)
Ending Balance	8,042,257
SL Green Operating Partnership | General Partner
Increase (Decrease) in Partner's Capital
Beginning Balance	7,078,924
Beginning Balance (units)	97,325
Net income	43,277
DRSPP proceeds (in shares)	775
DRSPP proceeds	99,496
Conversion of units of the Operating Partnership to common stock (in units)	317
Conversion of units of the Operating Partnership to common stock	37,407
Deferred compensation plan and stock award, net (units)	26
Deferred compensation plan and stock award, net	(3,430)
Amortization of deferred compensation plan	6,239
Contributions - net proceeds from common stock offering (in units)	953
Contributions - net proceeds from common stock offering	120,597
Contributions - proceeds from stock options exercised (in units)	137
Contributions - proceeds from stock options exercised	10,344
Cash distributions declared ($0.60 per common unit, none of which represented a return of capital for federal income tax purposes)	(59,647)
Ending Balance	7,340,771
Ending Balance (units)	99,533
SL Green Operating Partnership | Limited Partners
Increase (Decrease) in Partner's Capital
Beginning Balance (units)	3,973
Issuance of common units (in units)	257
Conversion of units of the Operating Partnership to common stock (in units)	317
Ending Balance (units)	3,913
SL Green Operating Partnership | Series I Preferred Stock
Increase (Decrease) in Partner's Capital
Beginning Balance	221,932
Net income	3,738
Preferred distributions	(3,738)
Ending Balance	221,932
SL Green Operating Partnership | Common Stock | Limited Partners
Increase (Decrease) in Partner's Capital
Beginning Balance	113,298
Net income	1,743
Acquisition of subsidiary interest from noncontrolling interest	7,564
Issuance of common units	22,114
Conversion of units of the Operating Partnership to common stock	(37,407)
Cash distributions declared ($0.60 per common unit, none of which represented a return of capital for federal income tax purposes)	(2,349)
Ending Balance	97,399
SL Green Operating Partnership | Accumulated Other Comprehensive Loss
Increase (Decrease) in Partner's Capital
Beginning Balance	(7,256)
Other comprehensive loss	(5,030)
Ending Balance	(12,286)
SL Green Operating Partnership | Noncontrolling Interests
Increase (Decrease) in Partner's Capital
Beginning Balance	521,842
Net income	5,927
Acquisition of subsidiary interest from noncontrolling interest	(11,084)
Reallocation of capital account relating to sale	(10,144)
Cash distributions to noncontrolling interests	(112,100)
Ending Balance	$ 394,441

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Property Dispositions (Details) (USD $)	3 Months Ended		1 Months Ended
	Mar. 31, 2015 sqft	Mar. 31, 2014	Jan. 31, 2015 sqft
Properties Sold [Abstract]
Approximate Usable Square Feet (sqft)	34,848,769
Gain on Sale	$ 12,983,000	$ 0
Revenues
Rental revenue	236,000	21,180,000
Escalation and reimbursement revenues	(127,000)	3,397,000
Other income	0	3,000
Total revenues	109,000	24,580,000
Operating expenses	(631,000)	4,461,000
Real estate taxes	250,000	3,985,000
Ground rent	0	2,196,000
Interest expense, net of interest income	109,000	4,661,000
Transaction related costs	(49,000)	0
Depreciation and amortization	0	3,297,000
Amortization of deferred financing costs	3,000	211,000
Total expenses	(318,000)	18,811,000
Net income from discontinued operations	427,000	5,769,000
180 Maiden Lane
Properties Sold [Abstract]
Approximate Usable Square Feet (sqft)			1,090,000
Sales Price			470,000,000
Gain on Sale			17,000,000
Employee compensation award			$ 800,000

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Noncontrolling Interests on the Company's Consolidated Financial Statements (Tables)

3 Months Ended

Mar. 31, 2015

Noncontrolling Interest [Abstract]

Schedule of Noncontrolling Interest

Below is the rollforward analysis of the activity relating to the noncontrolling interests in the Operating Partnership as of March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015			December 31, 2014
Balance at beginning of period	$	469,524		$	265,476
Distributions	(2,349		)	(7,849		)
Issuance of common units	22,114			56,469
Redemption of common units	(37,407		)	(31,653		)
Net income	1,743			18,467
Accumulated other comprehensive income allocation	(200		)	175
Fair value adjustment	45,456			168,439
Balance at end of period	$	498,881		$	469,524

Schedule of Preferred Unit Activity

Below is the rollforward analysis of the activity relating to the preferred units in the Operating Partnership as of March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015			December 31, 2014
Balance at beginning of period	$	71,115		$	49,550
Issuance of preferred units	40,000			23,565
Redemption of preferred units	(200		)	(2,000		)
Balance at end of period	$	110,915		$	71,115

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Financial Instruments: Derivatives and Hedging

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Financial Instruments: Derivatives and Hedging

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 equity 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.

The following table summarizes the notional and fair value of our consolidated derivative financial instruments at March 31, 2015 based on Level 2 information. The notional value is an indication of the extent of our involvement in these instruments at that time, but does not represent exposure to credit, interest rate or market risks (amounts in thousands).

	Notional Value		Strike Rate		Effective Date	Expiration Date	Balance Sheet Location	Fair Value
Interest Rate Cap - Sold	$	504,000	4.750	%	May 2014	May 2016	Other Assets	$	(1	)
Interest Rate Cap	504,000		4.750	%	May 2014	May 2016	Other Liabilities	1
Interest Rate Cap	500,000		4.750	%	October 2014	May 2016	Other Assets	1
Interest Rate Cap - Sold	500,000		4.750	%	November 2014	May 2016	Other Liabilities	(1		)
Interest Rate Cap	446,000		4.750	%	October 2014	May 2016	Other Assets	1
Interest Rate Cap	263,426		6.000	%	November 2013	November 2015	Other Assets	—
Interest Rate Cap	137,500		4.000	%	October 2013	September 2015	Other Assets	—
Interest Rate Swap	200,000		0.938	%	October 2014	December 2017	Other Liabilities	(326		)
Interest Rate Swap	150,000		0.940	%	October 2014	December 2017	Other Liabilities	(251		)
Interest Rate Swap	150,000		0.940	%	October 2014	December 2017	Other Liabilities	(251		)
Interest Rate Swap	144,000		2.236	%	December 2012	December 2017	Other Liabilities	(5,108		)
Interest Rate Swap	86,400		1.948	%	December 2012	December 2017	Other Liabilities	(2,407		)
Interest Rate Swap	72,000		2.310	%	December 2012	December 2017	Other Liabilities	(2,696		)
Interest Rate Swap	72,000		1.345	%	December 2012	December 2017	Other Liabilities	(862		)
Interest Rate Swap	72,000		2.310	%	December 2012	December 2017	Other Liabilities	(2,696		)
Interest Rate Swap	57,600		1.990	%	December 2012	December 2017	Other Liabilities	(1,669		)
Interest Rate Swap	30,000		2.295	%	July 2010	June 2016	Other Liabilities	(682		)
Interest Rate Swap	8,018		0.852	%	February 2015	February 2017	Other Liabilities	(33		)
								$	(16,980	)

During the three months ended March 31, 2015 and 2014, we recorded a loss on the changes in the fair value of less than $1,000 and $11,000, respectively, which is included in interest expense on the consolidated statements of income.

The Company has agreements with each of its derivative counterparties that contain a provision where if the Company either defaults or is capable of being declared in default on any of its indebtedness, then the Company could also be declared in default on its derivative obligations. As of March 31, 2015, the fair value of derivatives in a net liability position including accrued interest but excluding any adjustment for nonperformance risk related to these agreements was $18.1 million. As of March 31, 2015, the Company has not posted any collateral related to these agreements and was not in breach of any agreement provisions. If the Company had breached any of these provisions, it could have been required to settle its obligations under the agreements at their aggregate termination value of $18.1 million at March 31, 2015.

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 mortgage obligation. 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 $9.3 million of the current balance held in accumulated other comprehensive loss will be reclassified into interest expense and $1.1 million of the portion related to our share of joint venture accumulated other comprehensive loss will be reclassified into equity in net income from unconsolidated joint ventures within the next 12 months.

The following table presents the effect of our derivative financial instruments and our share of our joint ventures' derivative financial instruments that are designated and qualify as hedging instruments on the consolidated statements of income for the three months ended March 31, 2015 and 2014, respectively (in thousands):

	Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)						Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	Amount of Loss  Reclassified from Accumulated Other Comprehensive Loss  into Income (Effective Portion)				Location of Gain Recognized in Income on Derivative	Amount of (Loss) or Gain  Recognized into Income (Ineffective Portion)
	Three Months Ended March 31,							Three Months Ended March 31,					Three Months Ended March 31,
Derivative	2015			2014				2015		2014			2015			2014
Interest Rate Swaps/Caps	$	(7,521	)	$	(51	)	Interest expense	$	2,747	$	692	Interest expense	$	(410	)	$	1
Share of unconsolidated joint ventures' derivative instruments	(1,237		)	(1,746		)	Equity in net income from unconsolidated joint ventures	331		1,273		Equity in net income from unconsolidated joint ventures	(16		)	—
	$	(8,758	)	$	(1,797	)		$	3,078	$	1,965		$	(426	)	$	1

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Fair Value Measurements

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

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 following tables set forth the assets and liabilities that we measure at fair value on a recurring and non-recurring basis by their levels in the fair value hierarchy at March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015
	Total		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	47,716	$	4,287	$	43,429	$	—
Interest rate swap agreements (included in other assets)	$	3	$	—	$	3	$	—
Liabilities:
Interest rate swap agreements (included in accrued interest payable and other liabilities)	$	16,983	$	—	$	16,983	$	—

	December 31, 2014
	Total		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	39,429	$	4,332	$	35,097	$	—
Interest rate swap agreements (included in other assets)	$	2,174	—		2,174		—
Liabilities:
Interest rate swap agreements (included in accrued interest payable and other liabilities)	$	14,728	$	—	$	14,728	$	—

We determine other than temporary impairment in real estate investments and debt and preferred equity investments, including intangibles utilizing cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, which are classified as Level 3 inputs.

The marketable securities classified as Level 1 were derived from quoted prices in active markets. The valuation technique used to measure the fair value of the marketable securities classified as Level 2 were valued based on quoted market prices or model driven valuations using the significant inputs derived from or corroborated by observable market data. Marketable securities in an unrealized loss position are not considered to be other than temporarily impaired. We do not intend to sell these securities and it is not more likely than not that we will be required to sell the investments before recovery of their amortized cost bases.

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, debt and 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 debt and 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 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 March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015				December 31, 2014
	Carrying Value		Fair Value		Carrying Value		Fair Value
Debt and preferred equity investments	$	1,548,739	(1)		$	1,408,804	(1)
Fixed rate debt	$	6,016,084	$	6,582,767	$	6,140,786	$	6,565,236
Variable rate debt	2,073,000		2,116,146		2,291,943		2,315,952
	$	8,089,084	$	8,698,913	$	8,432,729	$	8,881,188

____________________________________________________________________

(1) At March 31, 2015, debt and preferred equity investments had an estimated fair value ranging between $1.7 billion and $1.9 billion. At December 31, 2014, debt and preferred equity investments had an estimated fair value ranging between $1.5 billion and $1.8 billion.

Disclosure about fair value of financial instruments was based on pertinent information available to us as of March 31, 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.

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Significant Accounting Policies (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Investment in Commercial Real Estate Properties
Increase in rental revenue from amortization of acquired leases	$ 14,300,000	$ 6,100,000
Reduction in interest expense from amortization of above-market rate mortgages	600,000	1,500,000
Identified intangible assets (included in other assets):
Gross amount	968,763,000		664,297,000
Accumulated amortization	(408,884,000)		(383,236,000)
Net	559,879,000		281,061,000
Identified intangible liabilities (included in deferred revenue):
Gross amount	847,326,000		655,755,000
Accumulated amortization	(506,578,000)		(483,948,000)
Net	$ 340,748,000		$ 171,807,000
Above-market leases | Minimum
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)	1 year
Above-market leases | Maximum
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)	14 years
In-place leases | Minimum
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)	1 year
In-place leases | Maximum
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)	14 years
Building | Minimum
Investment in Commercial Real Estate Properties
Estimated useful life (in years)	3 years
Building | Maximum
Investment in Commercial Real Estate Properties
Estimated useful life (in years)	40 years

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Stockholders' Equity of the Company (Tables)

3 Months Ended

Mar. 31, 2015

Stockholders' Equity Note [Abstract]

Schedule of Earnings Per Share

SL Green's earnings per share for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic Earnings:
Income attributable to SL Green common stockholders	$	43,277	$	146,090
Effect of Dilutive Securities:
Redemption of units to common shares	1,743		4,729
Diluted Earnings:
Income attributable to SL Green common stockholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic Shares:
Weighted average common stock outstanding	98,402	95,117
Effect of Dilutive Securities:
Redemption of units to common shares	3,964	3,079
Stock-based compensation plans	653	520
Diluted weighted average common stock outstanding	103,019	98,716

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Legal Proceedings

As of March 31, 2015, the Company and the Operating Partnership 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.

Capital and Ground Leases Arrangements

The following is a schedule of future minimum lease payments under capital leases and non-cancellable operating leases with initial terms in excess of one year as of March 31, 2015 (in thousands):

	Capital lease			Non-cancellable operating leases
Remaining 2015	$	109		$	22,869
2016	170			30,612
2017	291			30,845
2018	291			30,845
2019	315			30,862
Thereafter	56,568			720,698
Total minimum lease payments	57,744			$	866,731
Less amount representing interest	(36,827		)
Capital lease obligations	$	20,917

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Segment Information

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Segment Information

Segment Information

The Company is a REIT engaged in all aspects of property ownership and management including investment, leasing operations, capital improvements, development and redevelopment, financing, construction and maintenance in the New York Metropolitan area and have two reportable segments, real estate and debt and preferred equity. 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, "Debt and Preferred Equity Investments," for additional details on our debt and preferred equity investments.

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

	Real Estate Segment		Debt and Preferred Equity Segment		Total Company
Total revenues
Three months ended:
March 31, 2015	$	354,230	$	42,069	$	396,299
March 31, 2014	308,361		54,084		362,445
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate
Three months ended:
March 31, 2015	$	6,759	$	35,467	$	42,226
March 31, 2014	620		45,583		46,203
Total assets
As of:
March 31, 2015	$	15,514,089	$	1,566,643	$	17,080,732
December 31, 2014	15,671,662		1,424,925		17,096,587

Income from continuing operations represents total revenues less total expenses for the real estate segment and total investment income less allocated interest expense for the debt and preferred equity segment. Interest costs for the debt and preferred equity segment are imputed assuming the portfolio is 100% leveraged by our MRA facility and 2012 revolving credit facility borrowing cost. We also allocate loan loss reserves, net of recoveries, and transaction related costs to the debt and preferred equity segment. We do not allocate marketing, general and administrative expenses (totaling $25.5 million and $23.3 million for the three months ended March 31, 2015 and 2014, respectively) to the debt and 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.

The table below reconciles income from continuing operations to net income for the three months ended March 31, 2015 and 2014 (in thousands):

	Three Months Ended March 31,
	2015		2014
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate	$	42,226	$	46,203
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	—		104,640
Income from continuing operations	42,226		150,843
Net income from discontinued operations	427		5,769
Gain on sale of discontinued operations	12,983		—
Net income	$	55,636	$	156,612

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Consolidated Statement of Equity (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Stockholders' Equity [Abstract]
Cash distribution declared, per common share (in dollars per share)	$ 0.60	$ 0.50

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Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 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 debt and preferred equity investments. See Note 5, "Debt and Preferred Equity Investments" and Note 6, "Investments in Unconsolidated Joint Ventures." 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. Included in commercial real estate properties on our consolidated balance sheets as of March 31, 2015 and December 31, 2014 are $198.5 million and $198.4 million, respectively, related to our consolidated VIEs. Included in mortgages and other loans payable on our consolidated balance sheets as of March 31, 2015 and December 31, 2014 are $106.0 million and $106.5 million, respectively, related to our consolidated VIEs. Also, included in assets held for sale and liabilities related to assets held for sale on our consolidated balance sheets as of December 31, 2014 are $445.0 million of commercial real estate and $253.9 million of mortgage related to our consolidated VIEs.

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 equity 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 debt 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 do not believe that the values of any of our consolidated properties were other than temporarily impaired at March 31, 2015.

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 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 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.

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.

We determine other than temporary impairment in real estate investments and debt and preferred equity investments, including intangibles utilizing cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, which are classified as Level 3 inputs.

The marketable securities classified as Level 1 were derived from quoted prices in active markets. The valuation technique used to measure the fair value of the marketable securities classified as Level 2 were valued based on quoted market prices or model driven valuations using the significant inputs derived from or corroborated by observable market data. Marketable securities in an unrealized loss position are not considered to be other than temporarily impaired. We do not intend to sell these securities and it is not more likely than not that we will be required to sell the investments before recovery of their amortized cost bases.

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, debt and 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 debt and 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 to their present value using adjusted market interest rates, which is provided by a third-party specialist.

Investment in Marketable Securities

Investment in Marketable Securities

We invest in marketable securities. At the time of purchase, we are required to designate a security as held-to-maturity, available-for-sale, or trading depending on ability and intent. We do not have any securities designated as held-to-maturity or trading at March 31, 2015. Securities available-for-sale are reported at fair value pursuant to ASC 820-10, with the net unrealized gains or losses reported as a component of accumulated other comprehensive income or loss. Unrealized losses that are determined to be other-than-temporary are recognized in earnings up to their credit component.

The cost of bonds and marketable securities sold is determined using the specific identification method.

Investment in Unconsolidated Joint Ventures

Investments in Unconsolidated Joint Ventures

We assess our investments in unconsolidated joint ventures for recoverability, and if it is determined that a loss in value of the investment is other than temporary, we write down the investment to its fair value. We evaluate our equity investments for impairment based on the joint venture's projected discounted cash flows. We do not believe that the values of any of our equity investments were impaired at March 31, 2015.

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 debt and 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 debt and 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 debt and 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 debt or 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 debt or preferred equity investment at a discount with the intention of foreclosing on the collateral, we do not accrete the discount. For debt 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.

Debt and 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 debt or preferred equity investment is resumed when such non-accrual debt or 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 statement of income. 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 debt and 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 three months ended March 31, 2015 and 2014.

Debt and preferred equity investments held for sale are carried at the lower of cost or fair market value using available market information obtained through consultation with dealers or other originators of such investments as well as discounted cash flow models based on Level 3 data pursuant to ASC 820-10. As circumstances change, management may conclude not to sell an investment designated as held for sale. In such situations, the investment will be reclassified at its net carrying value to debt and preferred equity investments held to maturity. For these reclassified investments, the difference between the current carrying value and the expected cash to be collected at maturity will be accreted into income over the remaining term of the investment.

Income Taxes

Income Taxes

SL Green is taxed as a REIT under Section 856(c) of the Code. As a REIT, SL Green generally is not subject to Federal income tax. To maintain its qualification as a REIT, SL Green must distribute at least 90% of its REIT taxable income to its stockholders and meet certain other requirements. If SL Green fails to qualify as a REIT in any taxable year, we will be subject to Federal income tax on SL Green's taxable income at regular corporate rates. SL Green may also be subject to certain state, local and franchise taxes. Under certain circumstances, Federal income and excise taxes may be due on SL Green's undistributed taxable income.

The Operating Partnership 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. The only provision for income taxes included in the consolidated statements of income relates to the Operating Partnership’s consolidated taxable REIT subsidiaries. The Operating Partnership may also be subject to certain state, local and franchise taxes.

Pursuant to amendments to the Code that became effective January 1, 2001, we have elected, and may elect in the future, to treat certain of our existing or newly created corporate subsidiaries as taxable REIT subsidiaries, or TRSs. In general, TRSs may perform non-customary services for the tenants of the Company, hold assets that we cannot hold directly and generally may engage in any real estate or non-real estate related business. The TRSs generate income, resulting in Federal and state income tax liability for these entities.

During the three months ended March 31, 2015 and 2014, we recorded Federal, state and local tax provisions of $0.3 millionand $2.9 million, respectively.

We follow a two-step approach for evaluating uncertain tax positions. Recognition (step one) occurs when an enterprise concludes that a tax position, based solely on its technical merits, is more-likely-than-not to be sustained upon examination. Measurement (step two) determines the amount of benefit that is more-likely-than-not to be realized upon settlement. Derecognition of a tax position that was previously recognized would occur when a company subsequently determines that a tax position no longer meets the more-likely-than-not threshold of being sustained. The use of a valuation allowance as a substitute for derecognition of tax positions is prohibited.

Stock-Based Employee Compensation Plans

Stock-Based Employee Compensation Plans

We have a stock-based employee compensation plan, described more fully in Note 14, "Share-based Compensation."

The Company's stock options are recorded at fair value at the time of issuance. Fair value of the stock options is determined using the Black-Scholes option pricing model. The Black-Scholes model was developed for use in estimating the fair value of traded options, which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility. Because our plan has characteristics significantly different from those of traded options and because changes in the subjective input assumptions can materially affect the fair value estimate, in our opinion, the existing models do not necessarily provide a reliable single measure of the fair value of the employee stock options.

Compensation cost for stock options, if any, is recognized over the vesting period of the award. Our policy is to grant options with an exercise price equal to the quoted closing market price of the Company's common stock on the grant date. Awards of stock or restricted stock are expensed as compensation over the benefit period based on the fair value of the stock on the grant date.

For share-based awards with a performance or market measure, we recognize compensation cost over the requisite service period, using the accelerated attribution expense method. The requisite service period begins on the date the compensation committee of SL Green's board of directors authorizes the award, adopts any relevant performance measures and communicates the award to the employees. For programs with awards that vest based on the achievement of a performance condition or market condition, we determine whether it is probable that the performance condition will be met, and estimate compensation cost based on the fair value of the award at the applicable reporting date estimated using a binomial model or market quotes. For share-based awards for which there is no pre-established performance measure, we recognize compensation cost over the service vesting period, which represents the requisite service period, on a straight-line basis. In accordance with the provisions of our share-based incentive compensation plans, we accept the return of shares of the Company's common stock, at the current quoted market price, from certain key employees to satisfy minimum statutory tax-withholding requirements related to shares that vested during the period.

Awards can also be made in the form of a separate series of units of limited partnership interest in the Operating Partnership called long-term incentive plan units, or LTIP units. LTIP units, which can be granted either as free-standing awards or in tandem with other awards under our stock incentive plan, are valued by reference to the value of the Company's common stock at the time of grant, and are subject to such conditions and restrictions as the compensation committee of the Company's board of directors may determine, including continued employment or service, computation of financial metrics and/or achievement of pre-established performance goals and objectives.

Earnings per Share of the Company

Earnings per Share of the Company

The Company presents both basic and diluted earnings per share, or EPS. Basic EPS excludes dilution and is computed by dividing net income attributable to common stockholders by the weighted average number of common shares outstanding during the period. Basic EPS includes participating securities, consisting of unvested restricted stock that receive nonforfeitable dividends similar to shares of common stock. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock, where such exercise or conversion would result in a lower EPS amount. Diluted EPS also includes units of limited partnership interest. The dilutive effect of stock options is reflected in the weighted average diluted outstanding shares calculation by application of the treasury stock method. There is no dilutive effect for the exchangeable senior notes as the conversion premium will be paid in cash.

Earnings per Unit of the Operating Partnership

Earnings per Unit of the Operating Partnership

The Operating Partnership presents both basic and diluted earnings per unit, or EPU.  Basic EPU excludes dilution and is computed by dividing net income attributable to common unitholders by the weighted average number of common units outstanding during the period. Basic EPU includes participating securities, consisting of unvested restricted units that receive nonforfeitable dividends similar to shares of common units. Diluted EPU reflects the potential dilution that could occur if securities or other contracts to issue common units were exercised or converted into common units, where such exercise or conversion would result in a lower EPU amount. The dilutive effect of unit options is reflected in the weighted average diluted outstanding units calculation by application of the treasury stock method. There is no dilutive effect for the exchangeable senior notes as the conversion premium will be paid in cash.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States 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.

Concentration of Credit Risk

Concentrations of Credit Risk

Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash investments, debt and 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 debt and preferred equity investments is located in New York City. See Note 5, "Debt and Preferred Equity 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, Long Island, 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 eliminate discontinued operations from income from continuing operations.

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 (Accounting Standards Update, or 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 June 2014, the FASB issued final guidance that requires repurchase-to-maturity transactions to be accounted for as secured borrowings as if the transferor retains effective control, even though the transferred financial assets are not returned to the transferor at settlement and also eliminates existing guidance for repurchase financings (ASU, No. 2014-11). New disclosures are required for (1) certain transactions accounted for as secured borrowings and (2) transfers accounted for as sales when the transferor also retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction. The guidance is effective for the first interim or annual period beginning after December 15, 2014, except for the disclosures related to transactions accounted for as secured borrowings, which are effective for periods beginning after March 15, 2015. Early adoption of this guidance is prohibited. The Company has adopted the standard beginning in the first quarter of 2015. The adoption of this guidance did not have a material impact on our consolidated financial statements. The Company will adopt the presentation and disclosures related to transactions accounted for as secured borrowings during the second quarter of 2015.

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. 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 will change the presentation of discontinued operations for all properties held for sale and/or disposed of subsequent to January 1, 2015.

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Share-based Compensation-Additional Information (Details) (USD $)	3 Months Ended		12 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2012	Jan. 31, 2015	Aug. 31, 2011	Aug. 31, 2014	Dec. 31, 2013	Dec. 11, 2013	Dec. 17, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Sep. 30, 2014	Jun. 30, 2014	Jan. 01, 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost of the plan, subject to adjustment for forfeitures	$ 1,600,000	$ 1,600,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of commencement of option vesting, from date of grant (in years)	1 year
Exercise price of options granted, low end of the range (in dollars per share)	$ 20.67
Exercise price of options granted, high end of the range (in dollars per share)	$ 137.18
Remaining weighted average contractual life of the options outstanding (in years)	3 years 11 months 19 days
Remaining weighted average contractual life of the options exercisable (in years)	3 years 9 months 7 days
Total unrecognized compensation cost related to unvested stock awards	12,000,000
Weighted average period for recognition of compensation cost related to unvested stock awards (in years)	3 years
Weighted average fair value of options granted during the year	0		2,841,678
Stock options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration period (in years)	5 years
Options vesting period (in years)	1 year
Stock options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award expiration period (in years)	10 years
Options vesting period (in years)	5 years
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	1,936,853		9,658,019
Total unrecognized compensation cost related to unvested stock awards	10,500,000
Weighted average period for recognition of compensation cost related to unvested stock awards (in years)	1 year 10 months 24 days
Annual award vesting rate, low end of range (as a percent)	15.00%
Annual award vesting rate, high end of range (as a percent)	35.00%
Fair value of restricted stock vested during the period	7,200,000		5,500,000
Weighted average fair value of options granted during the year	333,153		1,141,675
Awards granted (in shares)	2,603		9,550
Awards outstanding (in shares)	3,003,582		3,000,979					2,994,197
LTIP units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of options granted during the year	25,400,000		33,200,000	0
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to unvested stock awards	10,400,000
Weighted average period for recognition of compensation cost related to unvested stock awards (in years)	1 year 1 month 6 days
Share-based Compensation	13,200,000	8,100,000
Third Amendment and Restated 2005 Stock Option and Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum fungible units that may be granted (in shares)	17,130,000
Fungible units per share (in fungible units per share)	2.76
Shares that may be issued if equal to fungible units (shares) (less than)	17,130,000
Fungible units	1,500,000
Third Amendment and Restated 2005 Stock Option and Incentive Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	2,000,000	2,100,000
Stock options, stock appreciation rights and other awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fungible units per share (in fungible units per share)	0.77
Award expiration period (in years)	5 years
All other awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fungible units per share (in fungible units per share)	1.0
Award expiration period (in years)	10 years
2010 Notional Unit Long-Term Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		300,000
Cost of the plan, subject to adjustment for forfeitures					31,700,000
Approximate amount of awards that may be earned by recipients after beginning of the second year if maximum performance achieved													25,000,000
Approximate amount of awards that may be earned by recipients after beginning of the third year if maximum performance achieved													25,000,000
Minimum stock price appreciation to earn maximum amount of awards (as a percent)													50.00%
LTIP units earned (in shares)				327,416							385,583	366,815
Percentage of LTIP Units earned, vested (percent)									25.00%	50.00%
2010 Notional Unit Long-Term Compensation Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Approximate amount of LTIP units that may be earned by the recipients based on stock price appreciation													15,000,000
2010 Notional Unit Long-Term Compensation Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Approximate amount of LTIP units that may be earned by the recipients based on stock price appreciation													75,000,000
2011 Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	700,000	1,900,000
Cost of the plan, subject to adjustment for forfeitures	26,800,000
Approximate amount of LTIP units that may be earned by the recipients based on stock price appreciation						85,000,000
LTIP units earned (in shares)														280,454	560,908
Value of LTIP Units that could be earned expressed as percentage of outperformance amount in excess of the 30% benchmark (percent)						10.00%
Duration period return to stockholders exceeds 25% (in years)						3 years
Cumulative return to stockholders (percent)						25.00%
Return to stockholders						85,000,000.0
Performance period (in years)						3 years
2014 Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	1,400,000
Cost of the plan, subject to adjustment for forfeitures	27,900,000
LTIP units earned (in shares)							610,000
Performance period (in years)							3 years
Award period (in years)							3 years
Percentage of LTIP units that may be earned based on the Company's absolute total return to stockholders							66.67%
Percentage of LTIP units that may be earned based on relative total return to stockholders compared to constituents of the MSCI REIT index							33.33%
Deferred Stock Compensation Plan for Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 1,300,000
Maximum percentage of the annual retainer fee, chairman fees and meeting fees that may be deferred by non-employee directors (percent)	100.00%
Awards granted (in shares)	5,613
Shares issued (in shares)	5,230
Awards outstanding (in shares)	81,262
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for issuance (shares)																500,000
Duration of each offering period starting the first day of each calendar quarter (in months)	3 months
Purchase price as a percentage of market value of the common stock (percent)	85.00%
Shares of common stock issued (shares)	81,955
Earned anytime after beginning of second year | 2011 Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of units vested						33.33%
Earned any time after beginning of third year | 2011 Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of units vested						66.67%
Vested on August 31, 2014 | 2011 Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of units vested						50.00%
Vesting on August 31, 2015 | 2011 Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of units vested						50.00%
Vesting on August 31, 2017 | 2014 Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of units vested							50.00%
Vesting on August 31, 2018 | 2014 Outperformance Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of units vested							50.00%

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Mortgages and Other Loans Payable (Tables)

3 Months Ended

Mar. 31, 2015

Mortgages and Other Loans Payable

Schedule of first mortgages and other loans payable collateralized by the respective properties and assignment of leases

The first mortgages and other loans payable collateralized by the respective properties and assignment of leases at March 31, 2015 and December 31, 2014, respectively, were as follows (amounts in thousands):

Property	Maturity Date	Interest Rate(1)		March 31, 2015		December 31, 2014
Fixed Rate Debt:
500 West Putnam Avenue	January 2016	5.52	%	$	22,823	$	22,968
Landmark Square	December 2016	4.00	%	80,848		81,269
485 Lexington Avenue	February 2017	5.61	%	450,000		450,000
120 West 45th Street	February 2017	6.12	%	170,000		170,000
762 Madison Avenue(2)	February 2017	3.81	%	8,001		8,045
885 Third Avenue	July 2017	6.26	%	267,650		267,650
1745 Broadway	June 2018	4.81	%	16,000		16,000
388-390 Greenwich Street(3)	June 2018	3.25	%	1,004,000		1,004,000
One Madison Avenue	May 2020	5.91	%	560,025		565,742
100 Church Street	July 2022	4.68	%	227,713		228,612
919 Third Avenue(4)	June 2023	5.12	%	500,000		500,000
400 East 57th Street	February 2024	4.13	%	68,588		68,896
400 East 58th Street	February 2024	4.13	%	29,395		29,527
420 Lexington Avenue	October 2024	3.99	%	300,000		300,000
1515 Broadway	March 2025	3.93	%	900,000		900,000
Series J Preferred Units(5)	April 2051	3.75	%	4,000		4,000
711 Third Avenue(6)				—		120,000
Total fixed rate debt				$	4,609,043	$	4,736,709
Floating Rate Debt:
Master repurchase agreement(7)	December 2015	3.43	%	—		100,000
388-390 Greenwich Street(3)	June 2018	1.93	%	446,000		446,000
248-252 Bedford Avenue	June 2019	1.68	%	29,000		29,000
220 East 42nd Street	October 2020	1.78	%	275,000		275,000
180 Maiden Lane(8)				—		253,942
Total floating rate debt				$	750,000	$	1,103,942
Total mortgages and other loans payable				$	5,359,043	$	5,840,651

____________________________________________________________________

(1) Effective weighted average interest rate for the three months ended March 31, 2015, taking into account interest rate hedges in effect during the period.

(2) In February 2015, we entered into a new swap agreement with a fixed interest rate of 3.86% per annum, which replaced the previous swap agreement with a fixed interest rate of 3.75% per annum.

(3) In connection with the acquisition of our joint venture partner's interest, we assumed the existing derivative instruments, which swapped $504.0 million of the mortgage to a fixed rate mortgage which bears interest at 3.80% per annum. In October 2014, we entered into multiple swap agreements to hedge our interest rate exposure on the additional $500.0 million portion of this mortgage, which was swapped to a fixed rate of 2.69% per annum. Including the as-of right extension option, this loan matures in June 2021.

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

(5) In connection with the acquisition of a commercial real estate property, the Operating Partnership issued $4.0 million, or 4,000, 3.75% Series J Preferred Units of limited partnership interest, or the Series J Preferred Units, with a mandatory liquidation preference of $1,000.00 per unit. The Series J Preferred Units can be redeemed in cash by the Operating Partnership on the earlier of (i) the date of the sale of the property or (ii) April 30, 2051 or at the option of the unitholders as further prescribed in the related agreement.

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

(7) The Master Repurchase Agreement, or MRA, has a maximum facility capacity of $300.0 million.

(8) In January 2015, the property was sold and the debt was repaid.

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Organization and Basis of Presentation (Details) (SL Green Operating Partnership)	0 Months Ended
	Mar. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Organization
Percentage of ownership in SL Green Management LLC owned by operating partnership (percent)	100.00%
Noncontrolling interest in the operating partnership (as a percent)	3.78%	3.78%	3.92%
Service Corporation
Organization
Economic interest in variable interest entity (as a percent)	95.00%

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Corporate Indebtedness (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Oct. 06, 2010	Mar. 20, 2007
Debt disclosures by scheduled maturity date
Accreted Balance	$ 2,110,041,000	$ 2,107,078,000
Senior unsecured notes
Debt disclosures by scheduled maturity date
Unpaid Principal Balance	1,310,323,000
Accreted Balance	1,277,041,000	1,274,078,000
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
Accreted Balance	255,261,000	255,250,000
Coupon Rate (as a percent)	6.00%
Effective rate (as a percent)	6.00%
Term (in Years)	10 years
Senior unsecured notes | 3.00% Senior unsecured notes maturing on October 15, 2017
Debt disclosures by scheduled maturity date
Unpaid Principal Balance	345,000,000
Accreted Balance	312,005,000	309,069,000
Coupon Rate (as a percent)	3.00%
Effective rate (as a percent)	3.00%
Term (in Years)	7 years
Premium on sale price to calculate exchange price of notes (as a percent)			30.00%
Exchange price (in dollars per share)			$ 85.81
Adjusted exchange rate for the debentures (in shares)	12.1632
Principal amount of debentures, basis for conversion	1,000
Amount of convertible debt recorded in equity			78,300,000
Debt Instrument, Unamortized Discount	32,900,000
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
Accreted Balance	249,760,000	249,744,000
Coupon Rate (as a percent)	5.00%
Effective rate (as a percent)	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
Accreted Balance	250,000,000	250,000,000
Coupon Rate (as a percent)	7.75%
Effective rate (as a percent)	7.75%
Term (in Years)	10 years
Senior unsecured notes | 4.50% Senior unsecured notes maturing on December 1, 2022
Debt disclosures by scheduled maturity date
Unpaid Principal Balance	200,000,000
Accreted Balance	200,000,000	200,000,000
Coupon Rate (as a percent)	4.50%
Effective rate (as a percent)	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	7,000
Accreted Balance	7,000	7,000
Coupon Rate (as a percent)	4.00%
Effective rate (as a percent)	4.00%
Term (in Years)	20 years
Exchange price (in dollars per share)	$ 1.3491
Adjusted exchange rate for the debentures (in shares)	7.7461
Principal amount of debentures, basis for conversion	1,000
Senior unsecured notes | 3.00% Senior unsecured notes maturing on March 30, 2027
Debt disclosures by scheduled maturity date
Unpaid Principal Balance	10,008,000
Accreted Balance	10,008,000	10,008,000
Coupon Rate (as a percent)	3.00%
Effective rate (as a percent)	3.00%
Term (in Years)	20 years
Premium on sale price to calculate exchange price of notes (as a percent)				25.00%
Exchange price (in dollars per share)				$ 173.30
Adjusted exchange rate for the debentures (in shares)	5.7952
Principal amount of debentures, basis for conversion	$ 1,000

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Commercial real estate properties, at cost:
Land and land interests	$ 3,830,787	$ 3,844,518
Building and improvements	8,697,145	8,778,593
Building leasehold and improvements	1,423,087	1,418,585
Property under capital lease	27,445	27,445
Total commercial real estate properties, at cost	13,978,464	14,069,141
Less: accumulated depreciation	(1,973,674)	(1,905,165)
Total commercial real estate properties, net	12,004,790	12,163,976
Assets held for sale	0	462,430
Cash and cash equivalents	330,770	281,409
Restricted cash	128,834	149,176
Investment in marketable securities	47,716	39,429
Tenant and other receivables, net of allowance of $18,047 and $18,068 in 2015 and 2014, respectively	50,156	57,369
Related party receivables	12,088	11,735
Deferred rents receivable, net of allowance of $26,480 and $27,411 in 2015 and 2014, respectively	408,229	374,944
Debt and preferred equity investments, net of discounts and deferred origination fees of $18,797 and $19,172 in 2015 and 2014, respectively	1,548,739	1,408,804
Investments in unconsolidated joint ventures	1,244,185	1,172,020
Deferred costs, net	326,555	327,962
Other assets	978,670	647,333
Total assets	17,080,732	17,096,587
Liabilities
Mortgages and other loans payable	5,359,043	5,586,709
Revolving credit facility	520,000	385,000
Term loan and senior unsecured notes	2,110,041	2,107,078
Accrued interest payable and other liabilities	162,910	137,634
Accounts payable and accrued expenses	151,427	173,246
Deferred revenue	369,626	187,148
Capitalized lease obligations	20,917	20,822
Deferred land leases payable	1,301	1,215
Dividend and distributions payable	65,868	64,393
Security deposits	66,427	66,614
Liabilities related to assets held for sale	0	266,873
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities	100,000	100,000
Total liabilities	8,927,560	9,096,732
Commitments and contingencies
Noncontrolling interests in Operating Partnership	498,881	469,524
Preferred units	110,915	71,115
Equity
Common stock, $0.01 par value, 160,000 shares authorized and 103,176 and 100,928 issued and outstanding at March 31, 2015 and December 31, 2014, respectively (including 3,643 and 3,603 shares held in Treasury at March 31, 2015 and December 31, 2014, respectively)	1,032	1,010
Additional paid-in-capital	5,572,410	5,289,479
Treasury stock at cost	(325,207)	(320,471)
Accumulated other comprehensive loss	(11,810)	(6,980)
Retained earnings	1,690,578	1,752,404
Total SL Green stockholders' equity	7,148,935	6,937,374
Noncontrolling interests in other partnerships	394,441	521,842
Total equity	7,543,376	7,459,216
SL Green stockholders equity:
Total liabilities and equity	17,080,732	17,096,587
Series I Preferred Stock
Equity
Series I Preferred Stock, $0.01 par value, $25.00 liquidation preference, 9,200 issued and outstanding at both March 31, 2015 and December 31, 2014	221,932	221,932
SL Green Operating Partnership
Commercial real estate properties, at cost:
Land and land interests	3,830,787	3,844,518
Building and improvements	8,697,145	8,778,593
Building leasehold and improvements	1,423,087	1,418,585
Property under capital lease	27,445	27,445
Total commercial real estate properties, at cost	13,978,464	14,069,141
Less: accumulated depreciation	(1,973,674)	(1,905,165)
Total commercial real estate properties, net	12,004,790	12,163,976
Assets held for sale	0	462,430
Cash and cash equivalents	330,770	281,409
Restricted cash	128,834	149,176
Investment in marketable securities	47,716	39,429
Tenant and other receivables, net of allowance of $18,047 and $18,068 in 2015 and 2014, respectively	50,156	57,369
Related party receivables	12,088	11,735
Deferred rents receivable, net of allowance of $26,480 and $27,411 in 2015 and 2014, respectively	408,229	374,944
Debt and preferred equity investments, net of discounts and deferred origination fees of $18,797 and $19,172 in 2015 and 2014, respectively	1,548,739	1,408,804
Investments in unconsolidated joint ventures	1,244,185	1,172,020
Deferred costs, net	326,555	327,962
Other assets	978,670	647,333
Total assets	17,080,732	17,096,587
Liabilities
Mortgages and other loans payable	5,359,043	5,586,709
Revolving credit facility	520,000	385,000
Term loan and senior unsecured notes	2,110,041	2,107,078
Accrued interest payable and other liabilities	162,910	137,634
Accounts payable and accrued expenses	151,427	173,246
Deferred revenue	369,626	187,148
Capitalized lease obligations	20,917	20,822
Deferred land leases payable	1,301	1,215
Dividend and distributions payable	65,868	64,393
Security deposits	66,427	66,614
Liabilities related to assets held for sale	0	266,873
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities	100,000	100,000
Total liabilities	8,927,560	9,096,732
Commitments and contingencies
Preferred units	110,915	71,115
Equity
Accumulated other comprehensive loss	(12,286)	(7,256)
SL Green stockholders equity:
SL Green partners' capital (1,034 and 1,013 general partner common units and 98,499 and 96,312 limited partner common units outstanding at March 31, 2015 and December 31, 2014, respectively)	7,340,771	7,078,924
Limited partner interests in SLGOP (3,913 and 3,973 limited partner common units outstanding at March 31, 2015 and December 31, 2014, respectively)	97,399	113,298
Total SLGOP partners' capital	7,647,816	7,406,898
Noncontrolling interests in other partnerships	394,441	521,842
Total capital	8,042,257	7,928,740
Total liabilities and equity	17,080,732	17,096,587
SL Green Operating Partnership | Series I Preferred Stock
SL Green stockholders equity:
Series I Preferred Units, $25.00 liquidation preference, 9,200 issued and outstanding at both March 31, 2015 and December 31, 2014	221,932	221,932
Total capital	$ 221,932	$ 221,932

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Partners' Capital of the Operating Partnership (Tables)

3 Months Ended

Mar. 31, 2015

Equity [Abstract]

Schedule of calculation of numerator and denominator in earnings per unit

The Operating Partnership's earnings per unit for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic and Diluted Earnings:
Income attributable to SLGOP common unitholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic units:
Weighted average common units outstanding	102,366	98,196
Effect of Dilutive Securities:
Stock-based compensation plans	653	520
Diluted weighted average common units outstanding	103,019	98,716

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net income	$ 55,636	$ 156,612
Other comprehensive (loss) income:
Change in net unrealized (loss) gain on derivative instruments, including SL Green's/SLGOP's share of joint venture net unrealized (loss) gain on derivative instruments	(5,680)	168
Change in unrealized gain on marketable securities	650	129
Other comprehensive (loss) income	(5,030)	297
Comprehensive income	50,606	156,909
Net income attributable to noncontrolling interests and preferred units distributions	(8,621)	(6,784)
Other comprehensive loss attributable to noncontrolling interests	200	42
Comprehensive income attributable to SL Green	42,185	150,167
SL Green Operating Partnership
Net income	55,636	156,612
Other comprehensive (loss) income:
Change in net unrealized (loss) gain on derivative instruments, including SL Green's/SLGOP's share of joint venture net unrealized (loss) gain on derivative instruments	(5,680)	168
Change in unrealized gain on marketable securities	650	129
Other comprehensive (loss) income	(5,030)	297
Comprehensive income	50,606	156,909
Net income attributable to noncontrolling interests and preferred units distributions	(5,927)	(1,490)
Comprehensive income attributable to SL Green	$ 44,679	$ 155,419

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Significant Accounting Policies (Details 5) (Annualized rent, Customer concentration)	3 Months Ended
	Mar. 31, 2015 Tenant
Concentration of Credit Risk
Number of tenants (tenants)	3
Maximum percentage of annualized rent for any one tenant not individually disclosed (percent) (more than)	2.10%
1515 Broadway
Concentration of Credit Risk
Percentage of concentration (percent)	10.10%
388 and 390 Greenwich Street
Concentration of Credit Risk
Percentage of concentration (percent)	9.70%
1185 Avenue of the Americas
Concentration of Credit Risk
Percentage of concentration (percent)	7.70%
919 Third Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	7.40%
Tenant 1
Concentration of Credit Risk
Percentage of concentration (percent)	10.70%
Tenant 2
Concentration of Credit Risk
Percentage of concentration (percent)	7.10%
Tenant 3
Concentration of Credit Risk
Percentage of concentration (percent)	5.40%

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Property Acquisitions (Tables)

3 Months Ended

Mar. 31, 2015

Property Acquisitions

Schedule of Fair Value of Equity Interest Immediately Before Acquisition Date

The acquisition-date fair value of the equity interest in 388-390 Greenwich Street immediately before the acquisition date as well as the purchase price fair value, as determined in accordance with the methodology set out in the prior sentence, is as follows (in thousands):

	388-390 Greenwich Street
Contract purchase price	$	1,585,000
Net consideration funded by us at closing, excluding consideration financed by debt	(208,614		)
Debt assumed	(1,162,379		)
Fair value of retained equity interest	214,007
Equity and/or debt investment held	(148,025		)
Other(1)	5,464
Purchase price fair value adjustment	$	71,446

___________________________________________________________________

(1) Includes the acceleration of a deferred leasing commission from the joint venture to the Company.

2015 Acquisitions

Property Acquisitions

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following summarizes our preliminary allocation of the purchase price of the assets acquired and liabilities assumed upon the closing of this acquisition (in thousands):

	1640 Flatbush Avenue(1)
Acquisition Date	March 2015
Ownership Type	Fee Interest
Property Type	Retail
Purchase Price Allocation:
Land	$	6,120
Building and building leasehold	680
Above-market lease value	—
Acquired in-place leases	—
Other assets, net of other liabilities	—
Assets acquired	6,800
Mark-to-market assumed debt	—
Below-market lease value	—
Derivatives	—
Liabilities assumed	—
Purchase price	$	6,800
Net consideration funded by us at closing, excluding consideration financed by debt	$	6,800
Equity and/or debt investment held	$	—
Debt assumed	$	—

____________________________________________________________________

(1) We are currently in the process of analyzing the purchase price allocation and, as such, we have not allocated any value to intangible assets such as above- and below-market lease or in-place leases.

2014 Acquisitions

Property Acquisitions

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

During the three months ended March 31, 2015, we finalized the purchase price allocations based on third party appraisal and additional facts and circumstances that existed at the acquisition dates for the following 2014 acquisitions (in thousands):

	719 Seventh Avenue(1)(2)		115 Spring Street(1)		388-390 Greenwich Street(1)(3)
Acquisition Date	July 2014		July 2014		May 2014
Ownership Type	Fee Interest		Fee Interest		Fee Interest
Property Type	Development		Retail		Office
Purchase Price Allocation:
Land	$	41,850	$	11,078	$	516,292
Building and building leasehold	—		44,799		964,434
Above-market lease value	—		—		—
Acquired in-place leases	—		2,037		302,430
Other assets, net of other liabilities	—		—		6,495
Assets acquired	41,850		57,914		1,789,651
Mark-to-market assumed debt	—		—		—
Below-market lease value	—		4,789		186,782
Derivatives	—		—		18,001
Liabilities assumed	—		4,789		204,783
Purchase price	$	41,850	$	53,125	$	1,584,868
Net consideration funded by us at closing, excluding consideration financed by debt	$	41,850	$	53,125	$	208,614
Equity and/or debt investment held	$	—	$	—	$	148,025
Debt assumed	$	—	$	—	$	1,162,379

____________________________________________________________________

(1) Based on our preliminary analysis of the purchase price, we had allocated $14.4 million and $26.7 million to land and building, respectively, at 719 Seventh Avenue, $15.9 million and $37.2 million to land and building, respectively, at 115 Spring Street and $558.7 million and $1.0 billion to land and building, respectively, at 388-390 Greenwich. The impact to our consolidated statement of income for the three months ended March 31, 2015 was $6.7 million in rental revenue for the amortization of aggregate below-market leases and $10.1 million of depreciation expense.

(2) We, along with our joint venture partner, acquired this property for consideration that included the issuance of $14.1 million aggregate liquidation preference of Series L Preferred Units of limited partnership interest of the Operating Partnership and $9.5 million aggregate liquidation preference of Series K Preferred Units of limited partnership interest of the Operating Partnership. We hold a 75.0% controlling interest in this joint venture.

(3) In May 2014, we acquired Ivanhoe Cambridge, Inc.'s 49.65% economic interest in this property, thereby consolidating full ownership of the property. The transaction valued the consolidated interests at $1.585 billion. Simultaneous with the closing, we refinanced the previous mortgage with a $1.45 billion mortgage. We also assumed the existing derivative instruments, which swapped $504.0 million of the mortgage to fixed rate. We recognized a purchase price fair value adjustment of $71.4 million upon closing of this transaction. This property, which we initially acquired in December 2007, was previously accounted for as an investment in unconsolidated joint ventures.

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Debt and Preferred Equity Investments (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2015 segment	Dec. 31, 2014 segment
Investments, Debt and Equity Securities [Abstract]
Number of portfolio segments of financial receivables (segment)	1	1
Additional amount of financing receivables included in other assets	$ 122.3	$ 133.5

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Noncontrolling Interests on the Company's Consolidated Financial Statements

3 Months Ended

Mar. 31, 2015

Noncontrolling Interest [Abstract]

Noncontrolling Interests on the Company's Consolidated Financial Statements

Noncontrolling Interests on the Company's Consolidated Financial Statements

Noncontrolling interests represent the common and preferred units of limited partnership interest in the Operating Partnership not held by the Company as well as third party equity interests in our other consolidated subsidiaries. Noncontrolling interests in the Operating Partnership are shown in the mezzanine equity while the noncontrolling interests in our other consolidated subsidiaries are shown in the equity section of the Company’s consolidated financial statements.

Common Units of Limited Partnership Interest in the Operating Partnership

As of March 31, 2015 and December 31, 2014, the noncontrolling interest unit holders owned 3.78%, or 3,912,944 units, and 3.92%, or 3,973,016 units, of the Operating Partnership, respectively. At March 31, 2015, 3,912,944 shares of SL Green's common stock were reserved for issuance upon redemption of units of limited partnership interest of the Operating Partnership.

Noncontrolling interests in the Operating Partnership is recorded at the greater of its cost basis or fair market value based on the closing stock price of SL Green's common stock at the end of the reporting period.

Below is the rollforward analysis of the activity relating to the noncontrolling interests in the Operating Partnership as of March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015			December 31, 2014
Balance at beginning of period	$	469,524		$	265,476
Distributions	(2,349		)	(7,849		)
Issuance of common units	22,114			56,469
Redemption of common units	(37,407		)	(31,653		)
Net income	1,743			18,467
Accumulated other comprehensive income allocation	(200		)	175
Fair value adjustment	45,456			168,439
Balance at end of period	$	498,881		$	469,524

Preferred Units of Limited Partnership Interest in the Operating Partnership

The Operating Partnership has 1,902,0004.5% Series G Preferred Units of limited partnership interest, or the Series G Preferred Units outstanding, with a liquidation preference of $25.00 per unit, which were issued in January 2012 in conjunction with an acquisition. The Series G Preferred unitholders receive annual dividends of $1.125 per unit paid on a quarterly basis and dividends are cumulative, subject to certain provisions. The Series G Preferred Units are convertible into a number of common units of limited partnership interest in the Operating Partnership equal to (i) the liquidation preference plus accumulated and unpaid distributions on the conversion date divided by (ii) $88.50. The common units of limited partnership interest in the Operating Partnership may be redeemed in exchange for SL Green's common stock on a 1-to-1 basis. The Series G Preferred Units also provide the holder with the right to require the Operating Partnership to repurchase the Series G Preferred Units for cash before January 31, 2022.

The Operating Partnership has 60 Series F Preferred Units outstanding with a mandatory liquidation preference of $1,000.00 per unit.

The Operating Partnership has authorized up to 700,0003.5% Series K Preferred Units of limited partnership interest, or the Series K Preferred Units, with a liquidation preference of $25.00 per unit. In August 2014, the Company issued 563,954 Series K Preferred Units in conjunction with an acquisition. The Series K Preferred unitholders receive annual dividends of $0.875 per unit paid on a quarterly basis and dividends are cumulative, subject to certain provisions. The Series K Preferred Units can be redeemed at any time, at the option of the unitholder, either for cash or are convertible into a number of common units of limited partnership interest in the Operating Partnership equal to (i) the liquidation preference plus accumulated and unpaid distributions on the conversion date divided by (ii) $134.67.

The Operating Partnership has authorized up to 500,0004.00% Series L Preferred Units of limited partnership interest, or the Series L Preferred Units, with a liquidation preference of $25.00 per unit. In August 2014, the Company issued 378,634 Series L Preferred Units in conjunction with an acquisition. The Series L Preferred unitholders receive annual dividends of $1.00 per unit paid on a quarterly basis and dividends are cumulative, subject to certain provisions. The Series L Preferred Units can be redeemed at any time at par for cash at the option of the unitholder.

The Operating Partnership has authorized up to 1,600,0003.75% Series M Preferred Units of limited partnership interest, or the Series M Preferred Units, with a liquidation preference of $25.00 per unit. In February 2015, the Company issued 1,600,000 Series M Preferred Units in conjunction with the acquisition of ownership interests in and relating to certain residential and retail real estate properties. The Series M Preferred unitholders receive annual dividends of $0.9375 per unit paid on a quarterly basis and dividends are cumulative, subject to certain provisions. The Series M Preferred Units can be redeemed at any time at par for cash at the option of the unitholder.

Below is the rollforward analysis of the activity relating to the preferred units in the Operating Partnership as of March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015			December 31, 2014
Balance at beginning of period	$	71,115		$	49,550
Issuance of preferred units	40,000			23,565
Redemption of preferred units	(200		)	(2,000		)
Balance at end of period	$	110,915		$	71,115

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Property Dispositions (Tables)

3 Months Ended

Mar. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

Summary of properties sold and income from discontinued operations

The following table summarizes the properties sold during the three months ended March 31, 2015:

Property	Disposition Date	Property Type	Approximate Usable Square Feet	Sales Price (in millions)		Gain on Sale(1) (in millions)
180 Maiden Lane	January 2015	Office	1,090,000	$	470.0	$	17.0

____________________________________________________________________

(1) The gain on sale for 180 Maiden Lane is net of a $0.8 million employee compensation award accrued in connection with the realization of this investment gain as a bonus to certain employees that were instrumental in realizing the gain on sale. Additionally, amounts do not include adjustments for expense recorded in subsequent periods.

The following table summarizes net income from discontinued operations for the three months ended March 31, 2015 and 2014, respectively (in thousands):

	Three Months Ended March 31,
	2015			2014
Revenues
Rental revenue	$	236		$	21,180
Escalation and reimbursement revenues	(127		)	3,397
Other income	—			3
Total revenues	109			24,580
Operating expenses	(631		)	4,461
Real estate taxes	250			3,985
Ground rent	—			2,196
Interest expense, net of interest income	109			4,661
Transaction related costs	(49		)	—
Depreciation and amortization	—			3,297
Amortization of deferred financing costs	3			211
Total expenses	(318		)	18,811
Net income from discontinued operations	$	427		$	5,769

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Partners' Capital of the Operating Partnership

3 Months Ended

Mar. 31, 2015

Stockholders' Equity

Partners' Capital of the Operating Partnership

Stockholders’ Equity of the Company

Common Stock

Our authorized capital stock consists of 260,000,000 shares, $0.01 par value per share, consisting of 160,000,000 shares of common stock, $0.01 par value per share, 75,000,000 shares of excess stock, at $0.01 par value per share, and 25,000,000 shares of preferred stock, par value $0.01 per share. As of March 31, 2015, 99,532,817 shares of common stock and no shares of excess stock were issued and outstanding.

At-The-Market Equity Offering Program

In June 2014, the Company, along with the Operating Partnership, entered into an "at-the-market" equity offering program, or ATM Program, to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 895,956 shares of our common stock for aggregate net proceeds of $113.4 million comprising the remaining balance of this ATM Program. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 895,956 units of limited partnership interest of the Operating Partnership.

In March 2015, the Company, along with the Operating Partnership, entered into a new ATM Program to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 56,680 shares of our common stock for aggregate net proceeds of $7.5 million. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 56,680 units of limited partnership interest of the Operating Partnership. As of March 31, 2015, $292.5 million remained available for issuance of common stock under the new ATM program.

Perpetual Preferred Stock

We have 9,200,000 shares of our 6.50% Series I Cumulative Redeemable Preferred Stock, or the Series I Preferred Stock, outstanding with a mandatory liquidation preference of $25.00 per share. The Series I Preferred stockholders receive annual dividends of $1.625 per share paid on a quarterly basis and dividends are cumulative, subject to certain provisions. We are entitled to redeem the Series I Preferred Stock at par for cash at our option on or after August 10, 2017. In August 2012, we received $221.9 million in net proceeds from the issuance of the Series I Preferred Stock, which were recorded net of underwriters' discount and issuance costs, and contributed the net proceeds to the Operating Partnership in exchange for 9,200,000 units of 6.50% Series I Cumulative Redeemable Preferred Units of limited partnership interest, or the Series I Preferred Units.

Dividend Reinvestment and Stock Purchase Plan

In February 2015, the Company filed a registration statement with the SEC for our dividend reinvestment and stock purchase plan, or DRSPP, which automatically became effective upon filing. The Company registered 3,500,000 shares of SL Green's common stock under the DRSPP. The DRSPP commenced on September 24, 2001.

During the three months ended March 31, 2015, the Company issued 775,161 shares of SL Green's common stock and received net proceeds of $99.5 million of proceeds from dividend reinvestments and/or stock purchases under the DRSPP. DRSPP shares may be issued at a discount to the market price.

Earnings per Share

SL Green's earnings per share for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic Earnings:
Income attributable to SL Green common stockholders	$	43,277	$	146,090
Effect of Dilutive Securities:
Redemption of units to common shares	1,743		4,729
Diluted Earnings:
Income attributable to SL Green common stockholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic Shares:
Weighted average common stock outstanding	98,402	95,117
Effect of Dilutive Securities:
Redemption of units to common shares	3,964	3,079
Stock-based compensation plans	653	520
Diluted weighted average common stock outstanding	103,019	98,716

SL Green has excluded 203,975 and 860,720 common stock equivalents from the diluted shares outstanding for the three months ended March 31, 2015 and 2014, respectively, as they were anti-dilutive.

SL Green Operating Partnership

Stockholders' Equity

Partners' Capital of the Operating Partnership

Partners' Capital of the Operating Partnership

The Company is the sole general partner of the Operating Partnership and at March 31, 2015 owned 99,532,817 general and limited partnership interests in the Operating Partnership and 9,200,000 Series I Preferred Units. Partnership interests in the Operating Partnership are denominated as “common units of limited partnership interest” (also referred to as “OP Units”) or “preferred units of limited partnership interest” (also referred to as “Preferred Units”). All references to OP Units and Preferred Units outstanding exclude such units held by the Company. A holder of an OP Unit may present such OP Unit to the Operating Partnership for redemption at any time (subject to restrictions agreed upon at the issuance of OP Units to particular holders that may restrict such right for a period of time, generally one year from issuance). Upon presentation of an OP Unit for redemption, the Operating Partnership must redeem such OP Unit in exchange for the cash equal to the then value of a share of common stock of the Company, except that the Company may, at its election, in lieu of cash redemption, acquire such OP Unit for one share of common stock. Because the number of shares of common stock outstanding at all times equals the number of OP Units that the Company owns, one share of common stock is generally the economic equivalent of one OP Unit, and the quarterly distribution that may be paid to the holder of an OP Unit equals the quarterly dividend that may be paid to the holder of a share of common stock. Each series of Preferred Units makes a distribution that is set in accordance with an amendment to the partnership agreement of the Operating Partnership. Preferred Units may also be convertible into OP Units at the election of the holder thereof or the Company, subject to the terms of such Preferred Units.

Net income (loss) allocated to the preferred unitholders and common unitholders reflects their pro rata share of net income (loss) and distributions.

Limited Partner Units

As of March 31, 2015, limited partners other than SL Green owned 3.78%, or 3,912,944 common units, of the Operating Partnership.

Preferred Units

Preferred units not owned by SL Green are further described in Note 11, “Noncontrolling Interests on the Company’s Consolidated Financial Statements - Preferred Units of Limited Partnership Interest in the Operating Partnership.”

Earnings per Unit

The Operating Partnership's earnings per unit for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic and Diluted Earnings:
Income attributable to SLGOP common unitholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic units:
Weighted average common units outstanding	102,366	98,196
Effect of Dilutive Securities:
Stock-based compensation plans	653	520
Diluted weighted average common units outstanding	103,019	98,716

The Operating Partnership has excluded 203,975 and 860,720 common unit equivalents from the diluted units outstanding for the three months ended March 31, 2015 and 2014, respectively, as they were anti-dilutive.

Accumulated Other Comprehensive Loss of the Operating Partnership

The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of March 31, 2015 (in thousands):

	Net unrealized loss on derivative instruments(1)			SLGOP’s share of joint venture net unrealized loss on derivative instruments(2)			Unrealized gain and (loss) on marketable securities		Total
Balance at December 31, 2014	(9,845		)	(100		)	2,689		(7,256		)
Other comprehensive (loss) income before reclassifications	(7,521		)	(1,237		)	650		(8,108		)
Amounts reclassified from accumulated other comprehensive income	2,747			331			—		3,078
Balance at March 31, 2015	$	(14,619	)	$	(1,006	)	$	3,339	$	(12,286	)

____________________________________________________________________

(1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of income. As of March 31, 2015 and December 31, 2014, the deferred net losses from these terminated hedges, which is included in accumulated other comprehensive loss relating to net unrealized loss on derivative instrument, was $11.7 million and $12.2 million, respectively.

(2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net income from unconsolidated joint ventures in the respective consolidated statements of income.

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Investment in Unconsolidated Joint Ventures (Details 3) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Assets
Commercial real estate property, net	$ 12,004,790,000		$ 12,163,976,000
Other assets	978,670,000		647,333,000
Liabilities and members' equity
Mortgages and other loans payable	5,359,043,000		5,586,709,000
Company's investments in unconsolidated joint ventures	1,244,185,000		1,172,020,000
Combined statements of income for the unconsolidated joint ventures
Operating expenses	76,777,000	69,909,000
Ground rent	8,188,000	8,033,000
Real estate taxes	55,723,000	52,350,000
Interest expense, net of interest income	75,807,000	76,178,000
Amortization of deferred financing costs	6,615,000	3,657,000
Transaction related costs	1,143,000	2,474,000
Depreciation and amortization	108,337,000	86,515,000
Total expenses	358,054,000	322,373,000
Company's equity in net income from unconsolidated joint ventures	4,030,000	6,128,000
Joint venture
Assets
Commercial real estate property, net	6,104,572,000		5,275,632,000
Other assets	919,848,000		810,567,000
Total assets	7,024,420,000		6,086,199,000
Liabilities and members' equity
Mortgages and other loans payable	4,354,674,000		3,778,704,000
Other liabilities	506,768,000		485,572,000
Members' equity	2,162,978,000		1,821,923,000
Total liabilities and members' equity	7,024,420,000		6,086,199,000
Company's investments in unconsolidated joint ventures	1,244,185,000		1,172,020,000
Combined statements of income for the unconsolidated joint ventures
Total revenues	128,916,000	161,138,000
Operating expenses	25,486,000	26,683,000
Ground rent	2,592,000	2,025,000
Real estate taxes	19,376,000	16,936,000
Interest expense, net of interest income	44,007,000	52,336,000
Amortization of deferred financing costs	3,010,000	4,633,000
Transaction related costs	8,000	271,000
Depreciation and amortization	32,984,000	45,604,000
Total expenses	127,463,000	148,488,000
Loss on early extinguishment of debt	(833,000)	(3,197,000)
Net income (loss) before gain on sale	620,000	9,453,000
Company's equity in net income from unconsolidated joint ventures	4,030,000	6,128,000
Joint venture
Investment in Unconsolidated Joint Ventures
Management fees, base revenue	$ 2,800,000	$ 6,300,000

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Consolidated Statement of Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid- In-Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Retained Earnings	Noncontrolling Interests	Series I Preferred Stock Preferred Stock
Beginning Balance at Dec. 31, 2014	$ 7,459,216	$ 1,010	$ 5,289,479	$ (320,471)	$ (6,980)	$ 1,752,404	$ 521,842	$ 221,932
Beginning Balance (in shares) at Dec. 31, 2014		97,325,000
Increase (Decrease) in Stockholders' Equity
Net income	52,942					47,015	5,927
Acquisition of subsidiary interest from noncontrolling interest	(3,520)		7,564				(11,084)
Other comprehensive loss	(4,830)				(4,830)
Preferred dividends	(3,738)					(3,738)
DRSPP proceeds (in shares)		775,000
DRSPP proceeds	99,496	8	99,488
Conversion of units of the Operating Partnership to common stock (in shares)		317,000
Conversion of units of the Operating Partnership to common stock	37,407	3	37,404
Reallocation of noncontrolling interest in the Operating Partnership	(45,456)					(45,456)
Reallocation of capital account relating to sale	(10,144)						(10,144)
Deferred compensation plan and stock award, net (in shares)		26,000
Deferred compensation plan and stock award, net	(3,430)		1,306	(4,736)
Amortization of deferred compensation plan	6,239		6,239
Issuance of common stock (in shares)		953,000
Issuance of common stock	120,597	10	120,587
Proceeds from stock options exercised (in shares)		137,000
Proceeds from stock options exercised	10,344	1	10,343
Contributions to consolidated joint venture interests	0
Cash distributions to noncontrolling interests	(112,100)						(112,100)
Cash distributions declared ($0.60 per common share, none of which represented a return of capital for federal income tax purposes)	(59,647)					(59,647)
Ending Balance at Mar. 31, 2015	$ 7,543,376	$ 1,032	$ 5,572,410	$ (325,207)	$ (11,810)	$ 1,690,578	$ 394,441	$ 221,932
Ending Balance (in shares) at Mar. 31, 2015		99,533,000

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Tenant and other receivables, allowance	$ 18,047	$ 18,068
Deferred rents receivable, allowance	26,480	27,411
Debt and preferred equity investments, discount	18,797	19,172
Preferred stock, par value (in dollars per share)	$ 0.01
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	160,000,000	160,000,000
Common stock, shares issued	103,176,000	100,928,000
Common stock, shares outstanding	103,176,000	100,928,000
Treasury stock, shares	3,643,000	3,603,000
Series I Preferred Stock
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, liquidation preference (in dollars per share)	$ 25.00	$ 25.00
Preferred stock, shares issued	9,200,000	9,200,000
Preferred stock, shares outstanding	9,200,000	9,200,000
SL Green Operating Partnership
Tenant and other receivables, allowance	18,047	18,068
Deferred rents receivable, allowance	26,480	27,411
Debt and preferred equity investments, discount	$ 18,797	$ 19,172
SL Green partner's capital, general partner common units outstanding (shares)	1,034,000	1,013,000
SL Green partners' capital, limited partner common units outstanding (shares)	98,499,000	96,312,000
Limited partner interests in Operating Partnership, limited partner common units outstanding (shares)	3,913,000	3,973,000
SL Green Operating Partnership | Series I Preferred Stock
Preferred units, liquidation preference (in dollars per share)	$ 25.00	$ 25.00
Preferred units, shares issued	9,200,000	9,200,000
Preferred units, shares outstanding	9,200,000	9,200,000

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Investments in Unconsolidated Joint Ventures

3 Months Ended

Mar. 31, 2015

Equity Method Investments and Joint Ventures [Abstract]

Investments in Unconsolidated Joint Ventures

Investments in Unconsolidated Joint Ventures

We have investments in several real estate joint ventures with various partners. As of March 31, 2015 and December 31, 2014, 650 Fifth Avenue, 33 Beekman, and 3 Columbus Circle were VIEs in which we are not the primary beneficiary. Our net equity investment in these VIEs was $97.9 million and $146.2 million at March 31, 2015 and December 31, 2014, respectively. All other investments below are voting interest entities. As we do not control the joint ventures listed below, we account for them under the equity method of accounting.

The table below provides general information on each of our joint ventures as of March 31, 2015:

Property	Partner	Ownership Interest	Economic Interest	Approximate Square Feet	Acquisition Date	Acquisition Price(1) (in thousands)
100 Park Avenue	Prudential Real Estate Investors	49.90%	49.90%	834,000	January 2000	$	95,800
717 Fifth Avenue	Jeff Sutton/Private Investor	10.92%	10.92%	119,500	September 2006	251,900
800 Third Avenue(2)	Private Investors	60.52%	60.52%	526,000	December 2006	285,000
1745 Broadway	Ivanhoe Cambridge, Inc.	56.88%	56.88%	674,000	April 2007	520,000
Jericho Plaza	Onyx Equities/Credit Suisse	20.26%	20.26%	640,000	April 2007	210,000
The Meadows	Onyx Equities	50.00%	50.00%	582,100	September 2007	111,500
600 Lexington Avenue	Canadian Pension Plan Investment Board	55.00%	55.00%	303,515	May 2010	193,000

Property	Partner	Ownership Interest	Economic Interest	Approximate Square Feet	Acquisition Date	Acquisition Price(1) (in thousands)
11 West 34th Street	Private Investor/ Jeff Sutton	30.00%	30.00%	17,150	December 2010	10,800
7 Renaissance	Louis Cappelli	50.00%	50.00%	65,641	December 2010	4,000
3 Columbus Circle(3)	The Moinian Group	48.90%	48.90%	741,500	January 2011	500,000
280 Park Avenue	Vornado Realty Trust	50.00%	50.00%	1,219,158	March 2011	400,000
1552-1560 Broadway(4)	Jeff Sutton	50.00%	50.00%	35,897	August 2011	136,550
724 Fifth Avenue	Jeff Sutton	50.00%	50.00%	65,040	January 2012	223,000
10 East 53rd Street	Canadian Pension Plan Investment Board	55.00%	55.00%	354,300	February 2012	252,500
33 Beekman(5)	Harel Insurance and Finance/TNG 33 LLC	45.90%	45.90%	—	August 2012	31,000
521 Fifth Avenue	Plaza Global Real Estate Partners LP	50.50%	50.50%	460,000	November 2012	315,000
21 East 66th Street(6)	Private Investors	32.28%	32.28%	16,736	December 2012	75,000
315 West 36th Street	Private Investors	35.50%	35.50%	147,619	December 2012	45,000
650 Fifth Avenue(7)	Jeff Sutton	50.00%	50.00%	32,324	November 2013	—
121 Greene Street	Jeff Sutton	50.00%	50.00%	7,131	September 2014	27,400
175-225 Third Street	KCLW 3rd Street LLC/LIVWRK LLC	95.00%	95.00%	—	October 2014	74,600
55 West 46th Street	Prudential Real Estate Investors	25.00%	25.00%	347,000	November 2014	295,000
Stonehenge Portfolio(8)	Various	Various	Various	2,046,733	February 2015	36,668

____________________________________________________________________

(1) Acquisition price represents the actual or implied gross purchase price for the joint venture.

(2) In March 2015, we acquired an additional 17.56% interest in this joint venture for $67.5 million.

(3) As a result of the sale of a condominium interest in September 2012, Young & Rubicam, Inc., or Y&R, owns a portion of the property, floors three through eight referred to as Y&R units. Because the joint venture has an option to repurchase the Y&R units, the gain associated with this sale was deferred.

(4) The purchase price represents only the purchase of the 1552 Broadway interest which comprised approximately 13,045 square feet. The joint venture also owns a long-term leasehold interest in the retail space and certain other spaces at 1560 Broadway, which is adjacent to 1552 Broadway.

(5) The property is currently being developed into a 30-story dormitory building, which will be conveyed to Pace University upon its completion under a long-term ground lease arrangement.

(6) We hold a 32.28% interest in three retail and two residential units at the property and a 16.14% interest in three residential units at the property.

(7) The joint venture owns a long-term leasehold interest in the retail space at 650 Fifth Avenue. In connection with the ground lease obligation, SLG provided a performance guaranty and our joint venture partner executed a contribution agreement to reflect its pro rata obligation. In the event the property is converted into a condominium unit and the landlord elects the purchase option, the joint venture shall be obligated to acquire the unit at the then fair value.

(8) In February 2015, we acquired an interest in a portfolio of Manhattan residential and retail properties for $40.2 million, of which $3.5 million represented an increase in ownership interest in six of our existing consolidated joint venture properties.  The $40.2 million of consideration included the issuance of $40.0 million aggregate liquidation preference of 3.75% Series M Preferred Units of limited partnership interest of the Operating Partnership.

Acquisition, Development and Construction Arrangements

Based on the characteristics of the following arrangements, which are similar to those of an investment, combined with the expected residual profit of not greater than 50%, we have accounted for these debt and preferred equity investments under the equity method. As of March 31, 2015 and December 31, 2014, the carrying value for acquisition, development and construction arrangements were as follows (in thousands):

Loan Type	March 31, 2015		December 31, 2014		Initial Maturity Date
Mezzanine loan and preferred equity	$	99,702	$	99,629	March 2016
Mezzanine loan(1)	45,964		46,246		February 2022
	$	145,666	$	145,875

____________________________________________________________________

(1) We have an option to convert our loan to equity interest subject to certain conditions. In addition, we have determined that our option to convert the loan to equity is not a derivative financial instrument pursuant to Generally Accepted Accounting Principles, or GAAP. As such, the embedded feature is not required to be bifurcated and the fair value accounting for the embedded feature at each reporting date is not applicable.

Mortgages and Other Loans Payable

We generally finance our joint ventures with non-recourse debt. However, in certain cases we have provided guarantees or master leases for tenant space. These guarantees and master leases terminate upon the satisfaction of specified circumstances or repayment of the underlying loans. The first mortgage notes and other loans payable collateralized by the respective joint venture properties and assignment of leases at March 31, 2015 and December 31, 2014, respectively, are as follows (amounts in thousands):

Property	Maturity Date	Interest Rate(1)		March 31, 2015		December 31, 2014
Fixed Rate Debt:
7 Renaissance	December 2015	10.00	%	$	2,147	$	2,147
11 West 34th Street	January 2016	4.82	%	16,825		16,905
280 Park Avenue	June 2016	6.57	%	698,249		700,171
1745 Broadway	January 2017	5.68	%	340,000		340,000
Jericho Plaza	May 2017	5.65	%	163,750		163,750
800 Third Avenue	August 2017	6.00	%	20,910		20,910
315 West 36th Street	December 2017	3.16	%	25,000		25,000
521 Fifth Avenue	November 2019	3.73	%	170,000		170,000
717 Fifth Avenue(2)	July 2022	4.45	%	300,000		300,000
21 East 66th Street	April 2023	3.60	%	12,000		12,000
717 Fifth Avenue(2)	July 2024	9.00	%	317,126		314,381
3 Columbus Circle(3)	March 2025	2.83	%	350,000		—
Stonehenge Portfolio(4)	Various	4.18	%	435,416		—
Total fixed rate debt				$	2,851,423	$	2,065,264
Floating Rate Debt:
The Meadows	September 2015	7.75	%	67,350		67,350
1552 Broadway(5)	April 2016	4.29	%	188,409		184,210
Other loan payable	June 2016	1.08	%	30,000		30,000
650 Fifth Avenue(6)	October 2016	3.68	%	65,000		65,000
175-225 Third Street	December 2016	4.25	%	40,000		40,000
10 East 53rd Street	February 2017	2.68	%	125,000		125,000
724 Fifth Avenue	April 2017	2.60	%	275,000		275,000
33 Beekman(7)	August 2017	2.93	%	59,370		52,283
600 Lexington Avenue	October 2017	2.26	%	115,758		116,740
55 West 46th Street(8)	October 2017	2.48	%	150,000		150,000
Stonehenge Portfolio	December 2017	3.25	%	10,500		—
121 Greene Street	November 2019	1.68	%	15,000		15,000
100 Park Avenue	February 2021	1.93	%	360,000		360,000
21 East 66th Street	June 2033	2.88	%	1,864		1,883
3 Columbus Circle(3)				—		230,974
Total floating rate debt				$	1,503,251	$	1,713,440
Total joint venture mortgages and other loans payable				$	4,354,674	$	3,778,704

____________________________________________________________________

(1) Effective weighted average interest rate for the three months endedMarch 31, 2015, taking into account interest rate hedges in effect during the period.

(2) These loans are comprised of a $300.0 million fixed rate mortgage loan and $290.0 million mezzanine loan. The mezzanine loan is subject to accretion based on the difference between contractual interest rate and contractual pay rate.

(3) In March 2015, the joint venture refinanced the previous mortgage and incurred a net loss on early extinguishment of debt of $0.8 million.

(4) Amount is comprised of $13.5 million, $56.3 million, $35.0 million, $7.4 million, $143.3 million, and $179.9 million in fixed-rate mortgages that mature in July 2016, June 2017, November 2017, February 2018, August 2019, and June 2024, respectively.

(5) These loans are comprised of a $150.0 million mortgage loan and a $41.5 million mezzanine loan. As of March 31, 2015, $1.7 million of the mortgage loan and $1.4 million of the mezzanine loan was unfunded.

(6) This loan has a committed amount of $97.0 million, of which $32.0 million was unfunded as of March 31, 2015.

(7) This loan has a committed amount of $75.0 million, of which $18.4 million is recourse to us. Our partner has indemnified us for its pro rata share of the recourse guarantee. A portion of the guarantee terminates upon the joint venture reaching certain milestones. We believe it is unlikely that we will be required to perform under this guarantee.

(8) This loan has a committed amount of $190.0 million, of which $40.0 million was unfunded as of March 31, 2015.

We act as the operating partner and day-to-day manager for all our joint ventures, except for 800 Third Avenue, Jericho Plaza, 280 Park Avenue, 3 Columbus Circle, The Meadows, 315 West 36th Street, 21 East 66th Street, 175-225 Third Street and the Stonehenge Portfolio. We are entitled to receive fees for providing management, leasing, construction supervision and asset management services to certain of our joint ventures. We earned $2.8 million and $6.3 million from these services for the three months ended March 31, 2015 and 2014, respectively. In addition, we have the ability to earn incentive fees based on the ultimate financial performance of certain of the joint venture properties.

The combined balance sheets for the unconsolidated joint ventures, at March 31, 2015 and December 31, 2014, are as follows (in thousands):

	March 31, 2015		December 31, 2014
Assets
Commercial real estate property, net	$	6,104,572	$	5,275,632
Other assets	919,848		810,567
Total assets	$	7,024,420	$	6,086,199
Liabilities and members' equity
Mortgages and other loans payable	$	4,354,674	$	3,778,704
Other liabilities	506,768		485,572
Members' equity	2,162,978		1,821,923
Total liabilities and members' equity	$	7,024,420	$	6,086,199
Company's investments in unconsolidated joint ventures	$	1,244,185	$	1,172,020

The combined statements of income for the unconsolidated joint ventures, from acquisition date through the three months ended March 31, 2015 and 2014 are as follows (in thousands):

	Three Months Ended March 31,
	2015			2014
Total revenues	$	128,916		$	161,138
Operating expenses	25,486			26,683
Ground rent	2,592			2,025
Real estate taxes	19,376			16,936
Interest expense, net of interest income	44,007			52,336
Amortization of deferred financing costs	3,010			4,633
Transaction related costs	8			271
Depreciation and amortization	32,984			45,604
Total expenses	127,463			148,488
Loss on early extinguishment of debt	(833		)	(3,197		)
Net income (loss) before gain on sale	$	620		$	9,453
Company's equity in net income from unconsolidated joint ventures	$	4,030		$	6,128

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Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Reconciliation of income from continuing operations to net income attributable to SL Green common stockholders
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate	$ 42,226	$ 46,203
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	0	104,640
Income from continuing operations	42,226	150,843
Net income from discontinued operations	427	5,769
Gain on sale of discontinued operations	12,983	0
Net income	$ 55,636	$ 156,612

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Document and Entity Information	3 Months Ended
	Mar. 31, 2015	May 04, 2015
Document Information [Line Items]
Entity Registrant Name	SL GREEN REALTY CORP
Entity Central Index Key	0001040971
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		99,582,364
SL Green Operating Partnership
Document Information [Line Items]
Entity Registrant Name	SL GREEN OPERATING PARTNERSHIP, LP.
Entity Central Index Key	0001492869
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		1,005,426

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Deferred Costs

3 Months Ended

Mar. 31, 2015

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Deferred Costs

Deferred Costs

Deferred costs at March 31, 2015 and 2014 consisted of the following (in thousands):

	March 31, 2015			December 31, 2014
Deferred leasing	$	389,935		$	385,555
Deferred financing	195,474			193,776
	585,409			579,331
Less accumulated amortization	(258,854		)	(251,369		)
Deferred costs, net	$	326,555		$	327,962

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Stockholders' Equity of the Company (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Basic Earnings:
Income attributable to SL Green common stockholders	$ 43,277	$ 146,090
Diluted Earnings:
Income attributable to SL Green common stockholders	45,020	150,819
Basic Shares:
Basic weighted average common shares outstanding (shares)	98,402,000	95,117,000
Effect of Dilutive Securities:
Redemption of units to common shares (shares)	3,964,000	3,079,000
Stock-based compensation plans (shares)	653,000	520,000
Diluted weighted average common stock outstanding (shares)	103,019,000	98,716,000
Common stock shares excluded from the diluted shares outstanding (shares)	203,975	860,720
Common Stock
Effect of Dilutive Securities:
Redemption of units to common shares	$ 1,743	$ 4,729

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Segment Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2015 segment	Mar. 31, 2014	Dec. 31, 2014
Segment information
Number of reportable segments (segment)	2
Total revenues	$ 396,299,000	$ 362,445,000
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate	42,226,000	46,203,000
Total assets	17,080,732,000		17,096,587,000
Leverage rate assumption (as a percent)	100.00%
Marketing, general and administrative expenses and transaction related costs	25,500,000	23,300,000
Real Estate Segment
Segment information
Total revenues	354,230,000	308,361,000
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate	6,759,000	620,000
Total assets	15,514,089,000		15,671,662,000
Debt and Preferred Equity Segment
Segment information
Total revenues	42,069,000	54,084,000
Income from continuing operations before equity in net gain on sale of interest in unconsolidated joint venture/real estate	35,467,000	45,583,000
Total assets	$ 1,566,643,000		$ 1,424,925,000

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Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues
Rental revenue, net	$ 303,329	$ 255,976
Escalation and reimbursement	40,969	37,807
Investment income	42,069	54,084
Other income	9,932	14,578
Total revenues	396,299	362,445
Expenses
Operating expenses, including related party expenses of $3,808 and $3,513 in 2015 and 2014, respectively	76,777	69,909
Real estate taxes	55,723	52,350
Ground rent	8,188	8,033
Interest expense, net of interest income	75,807	76,178
Amortization of deferred financing costs	6,615	3,657
Depreciation and amortization	108,337	86,515
Transaction related costs	1,143	2,474
Marketing, general and administrative	25,464	23,257
Total expenses	358,054	322,373
Income from continuing operations before equity in net income from unconsolidated joint ventures, equity in net gain on sale of interest in unconsolidated joint venture/real estate and (loss) gain on early extinguishment of debt	38,245	40,072
Equity in net income from unconsolidated joint ventures	4,030	6,128
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	0	104,640
(Loss) gain on early extinguishment of debt	(49)	3
Income from continuing operations	42,226	150,843
Net income from discontinued operations	427	5,769
Gain on sale of discontinued operations	12,983	0
Net income	55,636	156,612
Net income attributable to noncontrolling interests:
Noncontrolling interests in the Operating Partnership	(1,743)	(4,729)
Net income attributable to noncontrolling interests in other partnerships	(5,927)	(1,490)
Preferred units distributions	(951)	(565)
Net income attributable to SL Green/SLGOP	47,015	149,828
Perpetual preferred stock dividends	(3,738)	(3,738)
Amounts attributable to SL Green common stockholders:
Income from continuing operations before gains on sale and discontinued operations	30,387	39,143
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	0	101,359
Net income from discontinued operations	410	5,588
Gain on sale of discontinued operations	12,480	0
Net income attributable to SL Green common stockholders	43,277	146,090
Basic earnings per share:
Income from continuing operations before gains on sale and discontinued operations (usd per share)	$ 0.31	$ 0.41
Equity in net gain on sale of interest in unconsolidated joint venture/real estate (usd per share)	$ 0.00	$ 1.07
Net income from discontinued operations (usd per share)	$ 0.00	$ 0.06
Gain on sale of discontinued operations (usd per share)	$ 0.13	$ 0.00
Net income attributable to SL Green common stockholders (usd per share)	$ 0.44	$ 1.54
Diluted earnings per share:
Income from continuing operations before gains on sale and discontinued operations (usd per share)	$ 0.31	$ 0.41
Equity in net gain on sale of interest in unconsolidated joint venture/real estate (usd per share)	$ 0.00	$ 1.06
Net income from discontinued operations (usd per share)	$ 0.00	$ 0.06
Gain on sale of discontinued operations (usd per share)	$ 0.13	$ 0.00
Net income attributable to SL Green common stockholders (usd per share)	$ 0.44	$ 1.53
Dividends per share/unit (in usd per share)	$ 0.60	$ 0.50
Basic weighted average common shares outstanding (shares)	98,402	95,117
Diluted weighted average common shares and common share equivalents outstanding (in shares)	103,019	98,716
SL Green Operating Partnership
Revenues
Rental revenue, net	303,329	255,976
Escalation and reimbursement	40,969	37,807
Investment income	42,069	54,084
Other income	9,932	14,578
Total revenues	396,299	362,445
Expenses
Operating expenses, including related party expenses of $3,808 and $3,513 in 2015 and 2014, respectively	76,777	69,909
Real estate taxes	55,723	52,350
Ground rent	8,188	8,033
Interest expense, net of interest income	75,807	76,178
Amortization of deferred financing costs	6,615	3,657
Depreciation and amortization	108,337	86,515
Transaction related costs	1,143	2,474
Marketing, general and administrative	25,464	23,257
Total expenses	358,054	322,373
Income from continuing operations before equity in net income from unconsolidated joint ventures, equity in net gain on sale of interest in unconsolidated joint venture/real estate and (loss) gain on early extinguishment of debt	38,245	40,072
Equity in net income from unconsolidated joint ventures	4,030	6,128
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	0	104,640
(Loss) gain on early extinguishment of debt	(49)	3
Income from continuing operations	42,226	150,843
Net income from discontinued operations	427	5,769
Gain on sale of discontinued operations	12,983	0
Net income	55,636	156,612
Net income attributable to noncontrolling interests:
Net income attributable to noncontrolling interests in other partnerships	(5,927)	(1,490)
Preferred unit distributions	(951)	(565)
Net income attributable to SL Green/SLGOP	48,758	154,557
Perpetual preferred unit distributions	(3,738)	(3,738)
Net income attributable to SLGOP common unitholders	45,020	150,819
Amounts attributable to SL Green common stockholders:
Income from continuing operations before gains on sale and discontinued operations	31,610	40,410
Equity in net gain on sale of interest in unconsolidated joint venture/real estate	0	104,640
Net income from discontinued operations	427	5,769
Gain on sale of discontinued operations	$ 12,983	$ 0
Basic earnings per share:
Income from continuing operations before gains on sale and discontinued operations (in dollars per share)	$ 0.31	$ 0.41
Equity in net gain on sale of interest in unconsolidated joint venture/real estate (usd per share)	$ 0.00	$ 1.07
Net income from discontinued operations (in dollars per share)	$ 0.00	$ 0.06
Gain on sale of discontinued operations (usd per share)	$ 0.13	$ 0.00
Net income attributable to SLGOP common unitholders (in dollars per share)	$ 0.44	$ 1.54
Diluted earnings per share:
Income from continuing operations before gains on sale and discontinued operations (in dollars per share)	$ 0.31	$ 0.41
Equity in net gain on sale of interest in unconsolidated joint venture/real estate (usd per share)	$ 0.00	$ 1.06
Net income from discontinued operations (in dollars per share)	$ 0.00	$ 0.06
Gain on sale of discontinued operations (usd per share)	$ 0.13	$ 0.00
Net income attributable to SLGOP common unitholders (in dollars per share)	$ 0.44	$ 1.53
Dividends per share/unit (in usd per share)	$ 0.60
Basic weighted average common units outstanding (in shares)	102,366	98,196
Diluted weighted average common units and common unit equivalents outstanding (in shares)	103,019	98,716

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Organization and Basis of Presentation

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Basis of Presentation

Organization and Basis of Presentation

SL Green Realty Corp., which is referred to as the Company or SL Green, a Maryland corporation, and SL Green Operating Partnership, L.P., which is referred to as SLGOP or the Operating Partnership, a Delaware limited partnership, were formed in June 1997 for the purpose of combining the commercial real estate business of S.L. Green Properties, Inc. and its affiliated partnerships and entities. The Operating Partnership received a contribution of interest in the real estate properties, as well as 95% of the economic interest in the management, leasing and construction companies which are referred to as the Service Corporation, a consolidated variable interest entity. All of the management, leasing and construction services with respect to the properties that are wholly-owned by us are conducted through SL Green Management LLC which is 100% owned by the Operating Partnership. The Company has qualified, and expects to qualify in the current fiscal year, as a real estate investment trust, or REIT, under the Internal Revenue Code of 1986, as amended, or the Code, and operates as a self-administered, self-managed REIT. A REIT is a legal entity that holds real estate interests and, through payments of dividends to stockholders, is permitted to minimize the payment of Federal income taxes at the corporate level. Unless the context requires otherwise, all references to "we," "our" and "us" means the Company and all entities owned or controlled by the Company, including the Operating Partnership.

Substantially all of our assets are held by, and all of our operations are conducted through the Operating Partnership. The Company is the sole managing general partner of the Operating Partnership. As of March 31, 2015, noncontrolling investors held, in the aggregate, a 3.78% limited partnership interest in the Operating Partnership. We refer to these interests as the noncontrolling interests in the Operating Partnership. See Note 11, "Noncontrolling Interests on the Company's Consolidated Financial Statements."

Reckson Associates Realty Corp., or Reckson, and Reckson Operating Partnership, L.P., or ROP, are wholly-owned subsidiaries of the Operating Partnership.

As of March 31, 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, Long Island, Westchester County, Connecticut and New Jersey, which are collectively known as the Suburban properties:

		Consolidated			Unconsolidated		Total
Location	Type	Number of Properties		Approximate Square Feet	Number of Properties	Approximate Square Feet	Number of Properties	Approximate Square Feet	Weighted Average Occupancy(1)
Commercial:
Manhattan	Office	23		18,429,045	7	3,476,115	30	21,905,160	96.0	%
	Retail	9	(2)	403,735	7	279,628	16	683,363	90.7	%
	Development/Redevelopment	8		883,862	5	1,952,782	13	2,836,644	38.0	%
	Fee Interest	2		783,530	—	—	2	783,530	100.0	%
		42		20,500,172	19	5,708,525	61	26,208,697	89.7	%
Suburban	Office	27		4,365,400	4	1,222,100	31	5,587,500	80.8	%
	Retail	1		52,000	—	—	1	52,000	100.0	%
	Development/Redevelopment	2		86,000	2	65,641	4	151,641	57.5	%
		30		4,503,400	6	1,287,741	36	5,791,141	80.3	%
Total commercial properties		72		25,003,572	25	6,996,266	97	31,999,838	88.0	%
Residential:
Manhattan	Residential	3	(2)	735,587	17	2,046,733	20	2,782,320	96.8	%
Suburban	Residential	1		66,611	—	—	1	66,611	84.4	%
Total residential properties		4		802,198	17	2,046,733	21	2,848,931	96.4	%
Total portfolio		76		25,805,770	42	9,042,999	118	34,848,769	88.7	%

____________________________________________________________________

(1) The weighted average occupancy for commercial properties represents the total occupied 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 March 31, 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.

As of March 31, 2015, we also managed an approximately 336,201 square foot office building owned by a third party and held debt and preferred equity investments with a book value of $1.5 billion.

Partnership Agreement

In accordance with the partnership agreement of the Operating Partnership, or the Operating Partnership Agreement, we allocate all distributions and profits and losses in proportion to the percentage of ownership interests of the respective partners. As the managing general partner of the Operating Partnership, we are required to take such reasonable efforts, as determined by us in our sole discretion, to cause the Operating Partnership to distribute sufficient amounts to enable the payment of sufficient dividends by us to minimize any Federal income or excise tax at the Company level. Under the Operating Partnership Agreement, each limited partner has the right to redeem units of limited partnership interests for cash, or if we so elect, shares of SL Green's common stock on a one-for-one basis.

Basis of Quarterly Presentation

The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States 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 accounting principles generally accepted in the United States 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 and the Operating Partnership at March 31, 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 the Annual Report on Form 10-K for the year ended December 31, 2014 of the Company and the Operating Partnership.

The consolidated balance sheets at December 31, 2014 have been derived from the audited financial statements as of that date but do not include all the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating Activities
Net income	$ 55,636	$ 156,612
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	114,955	93,680
Equity in net income from unconsolidated joint ventures	(4,030)	(6,128)
Distributions of cumulative earnings from unconsolidated joint ventures	15,489	7,669
Equity in net gain on sale of interest in unconsolidated joint venture interest/real estate	0	(104,640)
Gain on sale of discontinued operations	(12,983)	0
Loss (gain) on early extinguishment of debt	49	(3)
Deferred rents receivable	(32,367)	(11,133)
Other non-cash adjustments	4,590	(12,792)
Changes in operating assets and liabilities:
Restricted cash—operations	(1,652)	(10,520)
Tenant and other receivables	7,096	11,899
Related party receivables	(353)	(11,885)
Deferred lease costs	(11,017)	(4,476)
Other assets	(38,280)	(32,949)
Accounts payable, accrued expenses and other liabilities and security deposits	(20,230)	(1,821)
Deferred revenue and land leases payable	14,056	14,635
Net cash provided by operating activities	90,959	88,148
Investing Activities
Acquisitions of real estate property	(6,290)	0
Additions to land, buildings and improvements	(47,117)	(48,213)
Escrowed cash—capital improvements/acquisition deposits	(3,084)	(34,861)
Investments in unconsolidated joint ventures	(83,772)	(18,966)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	45,546	72,558
Proceeds from disposition of real estate/joint venture interest	485,540	109,196
Proceeds from sale of marketable securities	133	0
Purchases of marketable securities	(7,769)	0
Other investments	(5,424)	(1,573)
Origination of debt and preferred equity investments	(174,420)	(150,464)
Repayments or redemption of debt and preferred equity investments	26,954	522
Net cash provided by (used in) investing activities	230,297	(71,801)
Financing Activities
Proceeds from mortgages and other loans payable	0	121,216
Repayments of mortgages and other loans payable	(481,608)	(10,772)
Proceeds from revolving credit facility and senior unsecured notes	665,000	603,000
Repayments of revolving credit facility and senior unsecured notes	(530,000)	(440,690)
Proceeds from stock options exercised and DRSSP issuance	109,840	8,992
Net proceeds from sale of common stock	120,597	24
Redemption of preferred unit	(200)	0
Distributions to noncontrolling interests in other partnerships	(110,867)	(1,586)
Contributions from noncontrolling interests in other partnerships	0	517
Distributions to noncontrolling interests in the Operating Partnership	(2,349)	(1,500)
Dividends/Distributions paid on common and preferred stock/units	(62,903)	(51,652)
Other obligations related to mortgage loan participations	25,000	0
Deferred loan costs and capitalized lease obligation	(4,405)	(3,426)
Net cash (used in) provided by financing activities	(271,895)	224,123
Net increase in cash and cash equivalents	49,361	240,470
Cash and cash equivalents at beginning of year	281,409	206,692
Cash and cash equivalents at end of year	330,770	447,162
Supplemental Disclosure of Non-Cash Investing and Financing Activities:
Issuance of common stock as deferred compensation	1,306	1,295
Issuance of units in the Operating Partnership	22,114	17,314
Redemption of units in the Operating Partnership	37,407	16,583
Derivative instruments at fair value	4,426	110
Exchange of debt investment for equity in joint venture	10,151	0
Transfer of restricted cash to operating cash and cash equivalents as a result of sale	21,578	0
Acquisition of subsidiary interest from noncontrolling interest	3,500	0
Tenant improvements and capital expenditures payable	17,664	9,898
Fair value adjustment to noncontrolling interest in the Operating Partnership	45,456	29,464
Transfer to net assets held for sale	0	63,925
Transfer to liabilities related to net assets held for sale	0	49,704
Transfer of financing receivable to debt investment	0	19,675
Deferred leasing payable	2,372	0
Issuance of preferred units	40,000	0
SL Green Operating Partnership
Operating Activities
Net income	55,636	156,612
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	114,955	93,680
Equity in net income from unconsolidated joint ventures	(4,030)	(6,128)
Distributions of cumulative earnings from unconsolidated joint ventures	15,489	7,669
Equity in net gain on sale of interest in unconsolidated joint venture interest/real estate	0	(104,640)
Gain on sale of discontinued operations	(12,983)	0
Loss (gain) on early extinguishment of debt	49	(3)
Deferred rents receivable	(32,367)	(11,133)
Other non-cash adjustments	4,590	(12,792)
Changes in operating assets and liabilities:
Restricted cash—operations	(1,652)	(10,520)
Tenant and other receivables	7,096	11,899
Related party receivables	(353)	(11,885)
Deferred lease costs	(11,017)	(4,476)
Other assets	(38,280)	(32,949)
Accounts payable, accrued expenses and other liabilities and security deposits	(20,230)	(1,821)
Deferred revenue and land leases payable	14,056	14,635
Net cash provided by operating activities	90,959	88,148
Investing Activities
Acquisitions of real estate property	(6,290)	0
Additions to land, buildings and improvements	(47,117)	(48,213)
Escrowed cash—capital improvements/acquisition deposits	(3,084)	(34,861)
Investments in unconsolidated joint ventures	(83,772)	(18,966)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	45,546	72,558
Proceeds from disposition of real estate/joint venture interest	485,540	109,196
Proceeds from sale of marketable securities	133	0
Purchases of marketable securities	(7,769)	0
Other investments	(5,424)	(1,573)
Origination of debt and preferred equity investments	(174,420)	(150,464)
Repayments or redemption of debt and preferred equity investments	26,954	522
Net cash provided by (used in) investing activities	230,297	(71,801)
Financing Activities
Proceeds from mortgages and other loans payable	0	121,216
Repayments of mortgages and other loans payable	(481,608)	(10,772)
Proceeds from revolving credit facility and senior unsecured notes	665,000	603,000
Repayments of revolving credit facility and senior unsecured notes	(530,000)	(440,690)
Proceeds from stock options exercised and DRSSP issuance	109,840	8,992
Net proceeds from sale of common stock	120,597	24
Redemption of preferred unit	(200)	0
Distributions to noncontrolling interests in other partnerships	(110,867)	(1,586)
Contributions from noncontrolling interests in other partnerships	0	517
Dividends/Distributions paid on common and preferred stock/units	(65,252)	(53,152)
Other obligations related to mortgage loan participations	25,000	0
Deferred loan costs and capitalized lease obligation	(4,405)	(3,426)
Net cash (used in) provided by financing activities	(271,895)	224,123
Net increase in cash and cash equivalents	49,361	240,470
Cash and cash equivalents at beginning of year	281,409	206,692
Cash and cash equivalents at end of year	330,770	447,162
Supplemental Disclosure of Non-Cash Investing and Financing Activities:
Issuance of common stock as deferred compensation	1,306	1,295
Issuance of units in the Operating Partnership	22,114	17,314
Redemption of units in the Operating Partnership	37,407	16,583
Derivative instruments at fair value	4,426	110
Exchange of debt investment for equity in joint venture	10,151	0
Tenant improvements and capital expenditures payable	17,664	9,898
Transfer to net assets held for sale	0	63,925
Transfer to liabilities related to net assets held for sale	0	49,704
Transfer of financing receivable to debt investment	0	19,675
Deferred leasing payable	2,372	0
Issuance of preferred units	$ 40,000	$ 0

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Stockholders' Equity of the Company

3 Months Ended

Mar. 31, 2015

Stockholders' Equity Note [Abstract]

Stockholders' Equity of the Company

Stockholders’ Equity of the Company

Common Stock

Our authorized capital stock consists of 260,000,000 shares, $0.01 par value per share, consisting of 160,000,000 shares of common stock, $0.01 par value per share, 75,000,000 shares of excess stock, at $0.01 par value per share, and 25,000,000 shares of preferred stock, par value $0.01 per share. As of March 31, 2015, 99,532,817 shares of common stock and no shares of excess stock were issued and outstanding.

At-The-Market Equity Offering Program

In June 2014, the Company, along with the Operating Partnership, entered into an "at-the-market" equity offering program, or ATM Program, to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 895,956 shares of our common stock for aggregate net proceeds of $113.4 million comprising the remaining balance of this ATM Program. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 895,956 units of limited partnership interest of the Operating Partnership.

In March 2015, the Company, along with the Operating Partnership, entered into a new ATM Program to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 56,680 shares of our common stock for aggregate net proceeds of $7.5 million. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 56,680 units of limited partnership interest of the Operating Partnership. As of March 31, 2015, $292.5 million remained available for issuance of common stock under the new ATM program.

Perpetual Preferred Stock

We have 9,200,000 shares of our 6.50% Series I Cumulative Redeemable Preferred Stock, or the Series I Preferred Stock, outstanding with a mandatory liquidation preference of $25.00 per share. The Series I Preferred stockholders receive annual dividends of $1.625 per share paid on a quarterly basis and dividends are cumulative, subject to certain provisions. We are entitled to redeem the Series I Preferred Stock at par for cash at our option on or after August 10, 2017. In August 2012, we received $221.9 million in net proceeds from the issuance of the Series I Preferred Stock, which were recorded net of underwriters' discount and issuance costs, and contributed the net proceeds to the Operating Partnership in exchange for 9,200,000 units of 6.50% Series I Cumulative Redeemable Preferred Units of limited partnership interest, or the Series I Preferred Units.

Dividend Reinvestment and Stock Purchase Plan

In February 2015, the Company filed a registration statement with the SEC for our dividend reinvestment and stock purchase plan, or DRSPP, which automatically became effective upon filing. The Company registered 3,500,000 shares of SL Green's common stock under the DRSPP. The DRSPP commenced on September 24, 2001.

During the three months ended March 31, 2015, the Company issued 775,161 shares of SL Green's common stock and received net proceeds of $99.5 million of proceeds from dividend reinvestments and/or stock purchases under the DRSPP. DRSPP shares may be issued at a discount to the market price.

Earnings per Share

SL Green's earnings per share for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic Earnings:
Income attributable to SL Green common stockholders	$	43,277	$	146,090
Effect of Dilutive Securities:
Redemption of units to common shares	1,743		4,729
Diluted Earnings:
Income attributable to SL Green common stockholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic Shares:
Weighted average common stock outstanding	98,402	95,117
Effect of Dilutive Securities:
Redemption of units to common shares	3,964	3,079
Stock-based compensation plans	653	520
Diluted weighted average common stock outstanding	103,019	98,716

SL Green has excluded 203,975 and 860,720 common stock equivalents from the diluted shares outstanding for the three months ended March 31, 2015 and 2014, respectively, as they were anti-dilutive.

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Mortgages and Other Loans Payable

3 Months Ended

Mar. 31, 2015

Mortgages and Other Loans Payable

Mortgages and Other Loans Payable

Mortgages and Other Loans Payable

The first mortgages and other loans payable collateralized by the respective properties and assignment of leases at March 31, 2015 and December 31, 2014, respectively, were as follows (amounts in thousands):

Property	Maturity Date	Interest Rate(1)		March 31, 2015		December 31, 2014
Fixed Rate Debt:
500 West Putnam Avenue	January 2016	5.52	%	$	22,823	$	22,968
Landmark Square	December 2016	4.00	%	80,848		81,269
485 Lexington Avenue	February 2017	5.61	%	450,000		450,000
120 West 45th Street	February 2017	6.12	%	170,000		170,000
762 Madison Avenue(2)	February 2017	3.81	%	8,001		8,045
885 Third Avenue	July 2017	6.26	%	267,650		267,650
1745 Broadway	June 2018	4.81	%	16,000		16,000
388-390 Greenwich Street(3)	June 2018	3.25	%	1,004,000		1,004,000
One Madison Avenue	May 2020	5.91	%	560,025		565,742
100 Church Street	July 2022	4.68	%	227,713		228,612
919 Third Avenue(4)	June 2023	5.12	%	500,000		500,000
400 East 57th Street	February 2024	4.13	%	68,588		68,896
400 East 58th Street	February 2024	4.13	%	29,395		29,527
420 Lexington Avenue	October 2024	3.99	%	300,000		300,000
1515 Broadway	March 2025	3.93	%	900,000		900,000
Series J Preferred Units(5)	April 2051	3.75	%	4,000		4,000
711 Third Avenue(6)				—		120,000
Total fixed rate debt				$	4,609,043	$	4,736,709
Floating Rate Debt:
Master repurchase agreement(7)	December 2015	3.43	%	—		100,000
388-390 Greenwich Street(3)	June 2018	1.93	%	446,000		446,000
248-252 Bedford Avenue	June 2019	1.68	%	29,000		29,000
220 East 42nd Street	October 2020	1.78	%	275,000		275,000
180 Maiden Lane(8)				—		253,942
Total floating rate debt				$	750,000	$	1,103,942
Total mortgages and other loans payable				$	5,359,043	$	5,840,651

____________________________________________________________________

(1) Effective weighted average interest rate for the three months ended March 31, 2015, taking into account interest rate hedges in effect during the period.

(2) In February 2015, we entered into a new swap agreement with a fixed interest rate of 3.86% per annum, which replaced the previous swap agreement with a fixed interest rate of 3.75% per annum.

(3) In connection with the acquisition of our joint venture partner's interest, we assumed the existing derivative instruments, which swapped $504.0 million of the mortgage to a fixed rate mortgage which bears interest at 3.80% per annum. In October 2014, we entered into multiple swap agreements to hedge our interest rate exposure on the additional $500.0 million portion of this mortgage, which was swapped to a fixed rate of 2.69% per annum. Including the as-of right extension option, this loan matures in June 2021.

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

(5) In connection with the acquisition of a commercial real estate property, the Operating Partnership issued $4.0 million, or 4,000, 3.75% Series J Preferred Units of limited partnership interest, or the Series J Preferred Units, with a mandatory liquidation preference of $1,000.00 per unit. The Series J Preferred Units can be redeemed in cash by the Operating Partnership on the earlier of (i) the date of the sale of the property or (ii) April 30, 2051 or at the option of the unitholders as further prescribed in the related agreement.

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

(7) The Master Repurchase Agreement, or MRA, has a maximum facility capacity of $300.0 million.

(8) In January 2015, the property was sold and the debt was repaid.

At March 31, 2015 and December 31, 2014, the gross book value of the properties and debt and preferred equity investments collateralizing the mortgages and other loans payable was approximately $7.9 billion and $8.2 billion, respectively.

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Share-based Compensation (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Stock options
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Dividend yield (as a percent)		1.60%
Expected life of option (in years)		3 years 7 months 6 days
Risk-free interest rate (as a percent)		1.29%
Expected stock price volatility (as a percent)		33.97%
Options Outstanding
Balance at beginning of year (in shares)	1,462,726	1,765,034
Granted (in shares)	0	102,050
Exercised (in shares)	(136,936)	(348,156)
Lapsed or cancelled (in shares)	(8,767)	(56,202)
Balance at end of period (in shares)	1,317,023	1,462,726
Options exercisable at end of year (in shares)	624,057	428,951
Weighted average fair value of options granted during the year	$ 0	$ 2,841,678
Weighted Average Exercise Price
Balance at beginning of year (in dollars per share)	$ 87.98	$ 83.24
Granted (in dollars per share)	$ 0.00	$ 119.12
Exercised (in dollars per share)	$ 75.27	$ 72.76
Lapsed or cancelled (in dollars per share)	$ 103.57	$ 90.03
Balance at end of period (in dollars per share)	$ 89.19	$ 87.98
Options exercisable at end of period (in dollars per share)	$ 87.82	$ 90.32
Restricted Stock Awards
Options Outstanding
Weighted average fair value of options granted during the year	333,153	1,141,675
Summary of restricted stock
Balance at beginning of year (in shares)	3,000,979	2,994,197
Granted (in shares)	2,603	9,550
Cancelled (in shares)	0	(2,768)
Balance at end of period (in shares)	3,003,582	3,000,979
Vested during the period (in shares)	84,581	75,043
Compensation expense recorded	$ 1,936,853	$ 9,658,019

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Property Dispositions

3 Months Ended

Mar. 31, 2015

Discontinued Operations and Disposal Groups [Abstract]

Property Dispositions

Property Dispositions

The following table summarizes the properties sold during the three months ended March 31, 2015:

Property	Disposition Date	Property Type	Approximate Usable Square Feet	Sales Price (in millions)		Gain on Sale(1) (in millions)
180 Maiden Lane	January 2015	Office	1,090,000	$	470.0	$	17.0

____________________________________________________________________

(1) The gain on sale for 180 Maiden Lane is net of a $0.8 million employee compensation award accrued in connection with the realization of this investment gain as a bonus to certain employees that were instrumental in realizing the gain on sale. Additionally, amounts do not include adjustments for expense recorded in subsequent periods.

Discontinued Operations

Discontinued operations included the results of operations of real estate assets sold prior to March 31, 2015. This included 180 Maiden Lane, which was sold in January 2015, 2 Herald Square, 985-987 Third Avenue and 673 First Avenue, which were sold during 2014.

The following table summarizes net income from discontinued operations for the three months ended March 31, 2015 and 2014, respectively (in thousands):

	Three Months Ended March 31,
	2015			2014
Revenues
Rental revenue	$	236		$	21,180
Escalation and reimbursement revenues	(127		)	3,397
Other income	—			3
Total revenues	109			24,580
Operating expenses	(631		)	4,461
Real estate taxes	250			3,985
Ground rent	—			2,196
Interest expense, net of interest income	109			4,661
Transaction related costs	(49		)	—
Depreciation and amortization	—			3,297
Amortization of deferred financing costs	3			211
Total expenses	(318		)	18,811
Net income from discontinued operations	$	427		$	5,769

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Property Acquisitions (Details) (USD $)	3 Months Ended		1 Months Ended		0 Months Ended		1 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Jul. 31, 2014	May 15, 2014	May 14, 2014	May 31, 2014
Recognized Identifiable Assets Acquired and Liabilities Assumed
Impact to rental revenue for amortization of aggregate below-market leases	$ 303,329,000	$ 255,976,000
Impact to depreciation expense	108,337,000	86,515,000
1640 Flatbush Avenue
Recognized Identifiable Assets Acquired and Liabilities Assumed
Land	6,120,000		6,120,000
Building and building leasehold	680,000		680,000
Above market lease value	0		0
Acquired in-place leases	0		0
Other assets, net of other liabilities	0		0
Assets acquired	6,800,000		6,800,000
Mark-to-market assumed debt	0		0
Below market lease value	0		0
Derivatives	0		0
Liabilities assumed	0		0
Purchase price	6,800,000		6,800,000
Net consideration funded by us at closing, excluding consideration financed by debt			6,800,000
Equity and/or debt investment held			0
Debt assumed			0
719 Seventh Avenue
Recognized Identifiable Assets Acquired and Liabilities Assumed
Land				41,850,000
Building and building leasehold				0
Above market lease value				0
Acquired in-place leases				0
Other assets, net of other liabilities				0
Assets acquired				41,850,000
Mark-to-market assumed debt				0
Below market lease value				0
Derivatives				0
Liabilities assumed				0
Purchase price				41,850,000
Net consideration funded by us at closing, excluding consideration financed by debt				41,850,000
Equity and/or debt investment held				0
Debt assumed				0
Ownership interest in consolidated joint venture (as a percent)				75.00%
719 Seventh Avenue | Series L Preferred Units
Recognized Identifiable Assets Acquired and Liabilities Assumed
Issuance of aggregate liquidation preference of preferred units				14,100,000
719 Seventh Avenue | Series K Preferred Units
Recognized Identifiable Assets Acquired and Liabilities Assumed
Issuance of aggregate liquidation preference of preferred units				9,500,000
719 Seventh Avenue | Scenario, Previously Reported
Recognized Identifiable Assets Acquired and Liabilities Assumed
Land				14,400,000
Building and building leasehold				26,700,000
115 Spring Street
Recognized Identifiable Assets Acquired and Liabilities Assumed
Land				11,078,000
Building and building leasehold				44,799,000
Above market lease value				0
Acquired in-place leases				2,037,000
Other assets, net of other liabilities				0
Assets acquired				57,914,000
Mark-to-market assumed debt				0
Below market lease value				4,789,000
Derivatives				0
Liabilities assumed				4,789,000
Purchase price				53,125,000
Net consideration funded by us at closing, excluding consideration financed by debt				53,125,000
Equity and/or debt investment held				0
Debt assumed				0
115 Spring Street | Scenario, Previously Reported
Recognized Identifiable Assets Acquired and Liabilities Assumed
Land				15,900,000
Building and building leasehold				37,200,000
388-390 Greenwich Street
Recognized Identifiable Assets Acquired and Liabilities Assumed
Land					516,292,000
Building and building leasehold					964,434,000
Above market lease value					0
Acquired in-place leases					302,430,000
Other assets, net of other liabilities					6,495,000
Assets acquired					1,789,651,000
Mark-to-market assumed debt					0
Below market lease value					186,782,000
Derivatives					18,001,000
Liabilities assumed					204,783,000
Purchase price					1,584,868,000	1,585,000,000
Net consideration funded by us at closing, excluding consideration financed by debt					208,614,000	208,614,000
Equity and/or debt investment held					148,025,000	148,025,000
Debt assumed					1,162,379,000	1,162,379,000
Economic interest (as a percent)							49.65%
Value of interest							1,585,000,000
Face amount of loan							1,450,000,000
Notional value							504,000,000
Purchase price fair value adjustment						71,446,000	71,400,000
388-390 Greenwich Street | Scenario, Previously Reported
Recognized Identifiable Assets Acquired and Liabilities Assumed
Land							558,700,000
Building and building leasehold							1,000,000,000
719 Seventh Avenue, 115 Spring Street and 388-390 Greenwich Street
Recognized Identifiable Assets Acquired and Liabilities Assumed
Impact to rental revenue for amortization of aggregate below-market leases	6,700,000
Impact to depreciation expense	$ 10,100,000

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Significant Accounting Policies

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Significant Accounting Policies

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 debt and preferred equity investments. See Note 5, "Debt and Preferred Equity Investments" and Note 6, "Investments in Unconsolidated Joint Ventures." 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. Included in commercial real estate properties on our consolidated balance sheets as of March 31, 2015 and December 31, 2014 are $198.5 million and $198.4 million, respectively, related to our consolidated VIEs. Included in mortgages and other loans payable on our consolidated balance sheets as of March 31, 2015 and December 31, 2014 are $106.0 million and $106.5 million, respectively, related to our consolidated VIEs. Also, included in assets held for sale and liabilities related to assets held for sale on our consolidated balance sheets as of December 31, 2014 are $445.0 million of commercial real estate and $253.9 million of mortgage related to our consolidated VIEs.

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 equity 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 debt 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 do not believe that the values of any of our consolidated properties were other than temporarily impaired at March 31, 2015.

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 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 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 $14.3 million and $6.1 million in rental revenue for the three months ended March 31, 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. We recognized a reduction in interest expense for the amortization of the above-market rate mortgages assumed of $0.6 million and $1.5 million for the three months ended March 31, 2015 and 2014, respectively.

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

	March 31, 2015			December 31, 2014
Identified intangible assets (included in other assets):
Gross amount	$	968,763		$	664,297
Accumulated amortization	(408,884		)	(383,236		)
Net	$	559,879		$	281,061
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	847,326		$	655,755
Accumulated amortization	(506,578		)	(483,948		)
Net	$	340,748		$	171,807

Fair Value Measurements

See Note 17, "Fair Value Measurements."

Investment in Marketable Securities

We invest in marketable securities. At the time of purchase, we are required to designate a security as held-to-maturity, available-for-sale, or trading depending on ability and intent. We do not have any securities designated as held-to-maturity or trading at March 31, 2015. Securities available-for-sale are reported at fair value pursuant to ASC 820-10, with the net unrealized gains or losses reported as a component of accumulated other comprehensive income or loss. Unrealized losses that are determined to be other-than-temporary are recognized in earnings up to their credit component.

The cost of bonds and marketable securities sold is determined using the specific identification method.

At March 31, 2015 and December 31, 2014, we held the following marketable securities (in thousands):

	March 31, 2015		December 31, 2014
Equity marketable securities	$	4,287	$	4,332
Mortgage-backed securities	43,429		35,097
Total marketable securities available-for-sale	$	47,716	$	39,429

The cost basis of the commercial mortgage-backed securities was $40.0 million and $32.4 million at March 31, 2015 and December 31, 2014, respectively. These securities mature at various times through 2049.

During the three months ended March 31, 2015, we disposed of marketable securities for aggregate net proceeds of $0.1 million. We did not sell any of our marketable securities during the three months ended March 31, 2014.

Investments in Unconsolidated Joint Ventures

We assess our investments in unconsolidated joint ventures for recoverability, and if it is determined that a loss in value of the investment is other than temporary, we write down the investment to its fair value. We evaluate our equity investments for impairment based on the joint venture's projected discounted cash flows. We do not believe that the values of any of our equity investments were impaired at March 31, 2015.

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 debt and 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 debt and 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 debt and 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 debt or 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 debt or preferred equity investment at a discount with the intention of foreclosing on the collateral, we do not accrete the discount. For debt 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.

Debt and 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 debt or preferred equity investment is resumed when such non-accrual debt or 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 statement of income. 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 debt and 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 three months ended March 31, 2015 and 2014.

Debt and preferred equity investments held for sale are carried at the lower of cost or fair market value using available market information obtained through consultation with dealers or other originators of such investments as well as discounted cash flow models based on Level 3 data pursuant to ASC 820-10. As circumstances change, management may conclude not to sell an investment designated as held for sale. In such situations, the investment will be reclassified at its net carrying value to debt and preferred equity investments held to maturity. For these reclassified investments, the difference between the current carrying value and the expected cash to be collected at maturity will be accreted into income over the remaining term of the investment.

Income Taxes

SL Green is taxed as a REIT under Section 856(c) of the Code. As a REIT, SL Green generally is not subject to Federal income tax. To maintain its qualification as a REIT, SL Green must distribute at least 90% of its REIT taxable income to its stockholders and meet certain other requirements. If SL Green fails to qualify as a REIT in any taxable year, we will be subject to Federal income tax on SL Green's taxable income at regular corporate rates. SL Green may also be subject to certain state, local and franchise taxes. Under certain circumstances, Federal income and excise taxes may be due on SL Green's undistributed taxable income.

The Operating Partnership 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. The only provision for income taxes included in the consolidated statements of income relates to the Operating Partnership’s consolidated taxable REIT subsidiaries. The Operating Partnership may also be subject to certain state, local and franchise taxes.

Pursuant to amendments to the Code that became effective January 1, 2001, we have elected, and may elect in the future, to treat certain of our existing or newly created corporate subsidiaries as taxable REIT subsidiaries, or TRSs. In general, TRSs may perform non-customary services for the tenants of the Company, hold assets that we cannot hold directly and generally may engage in any real estate or non-real estate related business. The TRSs generate income, resulting in Federal and state income tax liability for these entities.

During the three months ended March 31, 2015 and 2014, we recorded Federal, state and local tax provisions of $0.3 millionand $2.9 million, respectively.

We follow a two-step approach for evaluating uncertain tax positions. Recognition (step one) occurs when an enterprise concludes that a tax position, based solely on its technical merits, is more-likely-than-not to be sustained upon examination. Measurement (step two) determines the amount of benefit that is more-likely-than-not to be realized upon settlement. Derecognition of a tax position that was previously recognized would occur when a company subsequently determines that a tax position no longer meets the more-likely-than-not threshold of being sustained. The use of a valuation allowance as a substitute for derecognition of tax positions is prohibited.

Stock-Based Employee Compensation Plans

We have a stock-based employee compensation plan, described more fully in Note 14, "Share-based Compensation."

The Company's stock options are recorded at fair value at the time of issuance. Fair value of the stock options is determined using the Black-Scholes option pricing model. The Black-Scholes model was developed for use in estimating the fair value of traded options, which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility. Because our plan has characteristics significantly different from those of traded options and because changes in the subjective input assumptions can materially affect the fair value estimate, in our opinion, the existing models do not necessarily provide a reliable single measure of the fair value of the employee stock options.

Compensation cost for stock options, if any, is recognized over the vesting period of the award. Our policy is to grant options with an exercise price equal to the quoted closing market price of the Company's common stock on the grant date. Awards of stock or restricted stock are expensed as compensation over the benefit period based on the fair value of the stock on the grant date.

For share-based awards with a performance or market measure, we recognize compensation cost over the requisite service period, using the accelerated attribution expense method. The requisite service period begins on the date the compensation committee of SL Green's board of directors authorizes the award, adopts any relevant performance measures and communicates the award to the employees. For programs with awards that vest based on the achievement of a performance condition or market condition, we determine whether it is probable that the performance condition will be met, and estimate compensation cost based on the fair value of the award at the applicable reporting date estimated using a binomial model or market quotes. For share-based awards for which there is no pre-established performance measure, we recognize compensation cost over the service vesting period, which represents the requisite service period, on a straight-line basis. In accordance with the provisions of our share-based incentive compensation plans, we accept the return of shares of the Company's common stock, at the current quoted market price, from certain key employees to satisfy minimum statutory tax-withholding requirements related to shares that vested during the period.

Awards can also be made in the form of a separate series of units of limited partnership interest in the Operating Partnership called long-term incentive plan units, or LTIP units. LTIP units, which can be granted either as free-standing awards or in tandem with other awards under our stock incentive plan, are valued by reference to the value of the Company's common stock at the time of grant, and are subject to such conditions and restrictions as the compensation committee of the Company's board of directors may determine, including continued employment or service, computation of financial metrics and/or achievement of pre-established performance goals and objectives.

Earnings per Share of the Company

The Company presents both basic and diluted earnings per share, or EPS. Basic EPS excludes dilution and is computed by dividing net income attributable to common stockholders by the weighted average number of common shares outstanding during the period. Basic EPS includes participating securities, consisting of unvested restricted stock that receive nonforfeitable dividends similar to shares of common stock. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock, where such exercise or conversion would result in a lower EPS amount. Diluted EPS also includes units of limited partnership interest. The dilutive effect of stock options is reflected in the weighted average diluted outstanding shares calculation by application of the treasury stock method. There is no dilutive effect for the exchangeable senior notes as the conversion premium will be paid in cash.

Earnings per Unit of the Operating Partnership

The Operating Partnership presents both basic and diluted earnings per unit, or EPU.  Basic EPU excludes dilution and is computed by dividing net income attributable to common unitholders by the weighted average number of common units outstanding during the period. Basic EPU includes participating securities, consisting of unvested restricted units that receive nonforfeitable dividends similar to shares of common units. Diluted EPU reflects the potential dilution that could occur if securities or other contracts to issue common units were exercised or converted into common units, where such exercise or conversion would result in a lower EPU amount. The dilutive effect of unit options is reflected in the weighted average diluted outstanding units calculation by application of the treasury stock method. There is no dilutive effect for the exchangeable senior notes as the conversion premium will be paid in cash.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States 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.

Concentrations of Credit Risk

Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash investments, debt and 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 debt and preferred equity investments is located in New York City. See Note 5, "Debt and Preferred Equity 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, Long Island, Westchester County, Connecticut and New Jersey. The tenants located in our buildings operate in various industries. Other than three tenants who account for 10.7%, 7.1% and 5.4% of our share of annualized cash rent, respectively, no other tenant in our portfolio accounted for more than 2.1% of our share of annualized cash rent, including our share of joint venture annualized rent, at March 31, 2015. For the three months ended March 31, 2015, 10.1%, 9.7%, 7.7% and 7.4% of our annualized cash rent for consolidated properties was attributable to 1515 Broadway, 388-390 Greenwich Street, 1185 Avenue of the Americas and 919 Third Avenue, respectively.

Reclassification

Certain prior year balances have been reclassified to conform to our current year presentation primarily in order to eliminate discontinued operations from income from continuing operations.

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 (Accounting Standards Update, or 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 June 2014, the FASB issued final guidance that requires repurchase-to-maturity transactions to be accounted for as secured borrowings as if the transferor retains effective control, even though the transferred financial assets are not returned to the transferor at settlement and also eliminates existing guidance for repurchase financings (ASU, No. 2014-11). New disclosures are required for (1) certain transactions accounted for as secured borrowings and (2) transfers accounted for as sales when the transferor also retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction. The guidance is effective for the first interim or annual period beginning after December 15, 2014, except for the disclosures related to transactions accounted for as secured borrowings, which are effective for periods beginning after March 15, 2015. Early adoption of this guidance is prohibited. The Company has adopted the standard beginning in the first quarter of 2015. The adoption of this guidance did not have a material impact on our consolidated financial statements. The Company will adopt the presentation and disclosures related to transactions accounted for as secured borrowings during the second quarter of 2015.

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. 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 will change the presentation of discontinued operations for all properties held for sale and/or disposed of subsequent to January 1, 2015.

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Property Acquisitions

3 Months Ended

Mar. 31, 2015

Business Combinations [Abstract]

Property Acquisitions

Property Acquisitions

2015 Acquisitions

During the three months ended March 31, 2015, the property listed below was acquired from a third party. The following summarizes our preliminary allocation of the purchase price of the assets acquired and liabilities assumed upon the closing of this acquisition (in thousands):

	1640 Flatbush Avenue(1)
Acquisition Date	March 2015
Ownership Type	Fee Interest
Property Type	Retail
Purchase Price Allocation:
Land	$	6,120
Building and building leasehold	680
Above-market lease value	—
Acquired in-place leases	—
Other assets, net of other liabilities	—
Assets acquired	6,800
Mark-to-market assumed debt	—
Below-market lease value	—
Derivatives	—
Liabilities assumed	—
Purchase price	$	6,800
Net consideration funded by us at closing, excluding consideration financed by debt	$	6,800
Equity and/or debt investment held	$	—
Debt assumed	$	—

____________________________________________________________________

(1) We are currently in the process of analyzing the purchase price allocation and, as such, we have not allocated any value to intangible assets such as above- and below-market lease or in-place leases.

2014 Acquisitions

During the three months ended March 31, 2015, we finalized the purchase price allocations based on third party appraisal and additional facts and circumstances that existed at the acquisition dates for the following 2014 acquisitions (in thousands):

	719 Seventh Avenue(1)(2)		115 Spring Street(1)		388-390 Greenwich Street(1)(3)
Acquisition Date	July 2014		July 2014		May 2014
Ownership Type	Fee Interest		Fee Interest		Fee Interest
Property Type	Development		Retail		Office
Purchase Price Allocation:
Land	$	41,850	$	11,078	$	516,292
Building and building leasehold	—		44,799		964,434
Above-market lease value	—		—		—
Acquired in-place leases	—		2,037		302,430
Other assets, net of other liabilities	—		—		6,495
Assets acquired	41,850		57,914		1,789,651
Mark-to-market assumed debt	—		—		—
Below-market lease value	—		4,789		186,782
Derivatives	—		—		18,001
Liabilities assumed	—		4,789		204,783
Purchase price	$	41,850	$	53,125	$	1,584,868
Net consideration funded by us at closing, excluding consideration financed by debt	$	41,850	$	53,125	$	208,614
Equity and/or debt investment held	$	—	$	—	$	148,025
Debt assumed	$	—	$	—	$	1,162,379

____________________________________________________________________

(1) Based on our preliminary analysis of the purchase price, we had allocated $14.4 million and $26.7 million to land and building, respectively, at 719 Seventh Avenue, $15.9 million and $37.2 million to land and building, respectively, at 115 Spring Street and $558.7 million and $1.0 billion to land and building, respectively, at 388-390 Greenwich. The impact to our consolidated statement of income for the three months ended March 31, 2015 was $6.7 million in rental revenue for the amortization of aggregate below-market leases and $10.1 million of depreciation expense.

(2) We, along with our joint venture partner, acquired this property for consideration that included the issuance of $14.1 million aggregate liquidation preference of Series L Preferred Units of limited partnership interest of the Operating Partnership and $9.5 million aggregate liquidation preference of Series K Preferred Units of limited partnership interest of the Operating Partnership. We hold a 75.0% controlling interest in this joint venture.

(3) In May 2014, we acquired Ivanhoe Cambridge, Inc.'s 49.65% economic interest in this property, thereby consolidating full ownership of the property. The transaction valued the consolidated interests at $1.585 billion. Simultaneous with the closing, we refinanced the previous mortgage with a $1.45 billion mortgage. We also assumed the existing derivative instruments, which swapped $504.0 million of the mortgage to fixed rate. We recognized a purchase price fair value adjustment of $71.4 million upon closing of this transaction. This property, which we initially acquired in December 2007, was previously accounted for as an investment in unconsolidated joint ventures.

For business combinations achieved in stages, the acquisition-date fair value of our equity interest in a property immediately before the acquisition date is determined based on estimated cash flow projections that utilize available market information and discount and capitalization rates that we deem appropriate. Estimates of future cash flows are based on a number of factors including historical operating results, known and anticipated trends, and market and economic conditions. The acquisition-date fair value of the equity interest in 388-390 Greenwich Street immediately before the acquisition date as well as the purchase price fair value, as determined in accordance with the methodology set out in the prior sentence, is as follows (in thousands):

	388-390 Greenwich Street
Contract purchase price	$	1,585,000
Net consideration funded by us at closing, excluding consideration financed by debt	(208,614		)
Debt assumed	(1,162,379		)
Fair value of retained equity interest	214,007
Equity and/or debt investment held	(148,025		)
Other(1)	5,464
Purchase price fair value adjustment	$	71,446

___________________________________________________________________

(1) Includes the acceleration of a deferred leasing commission from the joint venture to the Company.

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Debt and Preferred Equity Investments

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Debt and Preferred Equity Investments

Debt and Preferred Equity Investments

During the three months ended March 31, 2015 and 2014, our debt and preferred equity investments (net of discounts and deferred origination fees) increased $166.9 million and $189.4 million, respectively, due to originations, purchases, advances under future funding obligations, accretion of reserves, discount amortization, and paid-in-kind interest, net of premium amortization. We recorded repayments, participations and sales of $27.0 million and $0.5 million during the three months ended March 31, 2015 and 2014, respectively, which offset the increases in debt and preferred equity investments.

Debt Investments

As of March 31, 2015 and December 31, 2014, we held the following debt investments with an aggregate weighted average current yield of 10.27% at March 31, 2015 (in thousands):

Loan Type	March 31, 2015 Future Funding Obligations		March 31, 2015 Senior Financing		March 31, 2015 Carrying Value (1)		December 31, 2014 Carrying Value (1)		Initial Maturity Date
Fixed Rate Investments:
Jr. Mortgage Participation /Mezzanine Loan	$	—	$	205,000	$	71,291	$	70,688	February 2016
Jr. Mortgage Participation/Mezzanine Loan(2)(3)	—		—		45,863		45,611		Various(2)
Jr. Mortgage Participation	—		133,000		49,000		49,000		June 2016
Mezzanine Loan	—		165,000		71,721		71,656		November 2016
Jr. Mortgage Participation/Mezzanine Loan	—		1,109,000		100,758		98,934		March 2017
Mezzanine Loan(3)	—		—		65,868		65,770		March 2017

Loan Type	March 31, 2015 Future Funding Obligations		March 31, 2015 Senior Financing		March 31, 2015 Carrying Value (1)		December 31, 2014 Carrying Value (1)		Initial Maturity Date
Mezzanine Loan(4)	10,787		502,100		30,264		24,608		June 2017
Mezzanine Loan	—		539,000		49,622		49,629		July 2018
Mortgage Loan(5)	—		—		26,222		26,209		February 2019
Mortgage Loan	—		—		607		637		August 2019
Mezzanine Loan	—		15,000		3,500		3,500		September 2021
Mezzanine Loan(6)	—		90,000		19,932		19,930		November 2023
Mezzanine Loan	—		95,000		30,000		30,000		January 2025
Mezzanine Loan(7)	—		—		—		14,068
Jr. Mortgage Participation(8)	—		—		—		11,934
Total fixed rate	$	10,787	$	2,853,100	$	564,648	$	582,174
Floating Rate Investments:
Mezzanine Loan(9)	611		50,000		44,647		37,322		April 2015
Mortgage/Mezzanine Loan	—		—		109,802		109,527		June 2015
Mezzanine Loan	—		110,000		49,745		49,614		September 2015
Mezzanine Loan	—		775,000		73,699		73,402		March 2016
Mezzanine Loan(10)	—		160,000		22,586		22,573		June 2016
Mezzanine Loan	—		115,000		24,911		24,910		July 2016
Mezzanine Loan(11)	514		172,105		36,917		33,726		November 2016
Mezzanine Loan	—		360,000		99,144		99,023		November 2016
Mezzanine Loan(12)	17,104		117,202		43,906		42,750		December 2016
Mezzanine Loan	2,120		33,915		11,855		11,835		December 2016
Mortgage/Mezzanine Loan(13)	78,975		—		111,613		—		January 2017
Mezzanine Loan	8,781		92,294		20,955		20,651		January 2017
Jr. Mortgage Participation/Mezzanine Loan	2,522		112,393		38,905		38,524		July 2017
Mortgage/Mezzanine Loan	—		—		22,822		22,803		July 2017
Mortgage/Mezzanine Loan	—		—		16,861		16,848		September 2017
Mezzanine Loan	—		60,000		14,869		14,859		November 2017
Mortgage/Mezzanine Loan(14)	795		—		14,868		14,845		December 2017
Jr. Mortgage Participation/Mezzanine Loan	—		55,000		20,528		20,533		July 2018
Mortgage/Mezzanine Loan	—		—		18,159		18,083		February 2019
Mezzanine Loan	—		38,000		21,816		21,807		March 2019
Total floating rate	$	111,422	$	2,250,909	$	818,608	$	693,635
Total	$	122,209	$	5,104,009	$	1,383,256	$	1,275,809

____________________________________________________________________

(1) Carrying value is net of discounts, premiums, original issue discounts and deferred origination fees.

(2) The $22.8 million junior mortgage participation and $23.1 million mezzanine loan mature in February 2016 and May 2016, respectively.

(3) These loans are collateralized by defeasance securities.

(4) Carrying value is net of $41.3 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(5) In September 2014, we acquired a $26.4 million mortgage loan at a $0.2 million discount and a $5.7 million junior mortgage participation at a $5.7 million discount. The junior mortgage participation was a nonperforming loan at acquisition and is currently on non-accrual status.

(6) Carrying value is net of $5.0 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(7) This loan was repaid in February 2015.

(8) This loan was repaid in March 2015.

(9) This loan was repaid in April 2015.

(10) Carrying value is net of $7.4 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(11) This loan was repaid in April 2015.

(12) In February 2015, the maturity date was extended to December 2016.

(13) Carrying value is net of $25.0 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

(14) Carrying value is net of $5.1 million that was participated out, which is included in other assets and other liabilities on the consolidated balance sheets as a result of the transfer not meeting the conditions for sale accounting.

Preferred Equity Investments

As of March 31, 2015 and 2014, we held the following preferred equity investments with an aggregate weighted average current yield of 10.20% at March 31, 2015 (in thousands):

Type	March 31, 2015 Future Funding Obligations		March 31, 2015 Senior Financing		March 31, 2015 Carrying Value (1)		December 31, 2014 Carrying Value (1)		Initial Mandatory Redemption
Preferred equity(2)	$	—	$	550,000	$	124,907	$	123,041	July 2015
Preferred equity(3)	—		70,000		9,957		9,954		March 2018
Preferred equity	7,100		60,795		30,619		—		November 2018
	$	7,100	$	680,795	$	165,483	$	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) In March 2015, the maturity date was extended to March 2018.

At March 31, 2015 and December 31, 2014, all debt and preferred equity investments were performing in accordance with the terms of the relevant investments, with the exception of a junior mortgage participation acquired in September 2014, which has a carrying value of zero.

We have determined that we have one portfolio segment of financing receivables at March 31, 2015 and December 31, 2014 comprising commercial real estate which is primarily recorded in debt and preferred equity investments. Included in other assets is an additional amount of financing receivables totaling $122.3 million and $133.5 million at March 31, 2015 and December 31, 2014, respectively. No financing receivables were 90 days past due at March 31, 2015.

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Debt and Preferred Equity Investments (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Preferred equity investment
Aggregate weighted average current yield (as a percent)	10.27%
Carrying Value, Net of Discounts and Deferred Origination Fees	$ 1,548,739	$ 1,408,804
Preferred Equity, July 2015
Preferred equity investment
Future Funding Obligations	0
Senior Financing	550,000
Carrying Value, Net of Discounts and Deferred Origination Fees	124,907	123,041
Preferred Equity, March 2018
Preferred equity investment
Future Funding Obligations	0
Senior Financing	70,000
Carrying Value, Net of Discounts and Deferred Origination Fees	9,957	9,954
Preferred Equity, November 2018
Preferred equity investment
Future Funding Obligations	7,100
Senior Financing	60,795
Carrying Value, Net of Discounts and Deferred Origination Fees	30,619	0
Preferred equity investments
Preferred equity investment
Aggregate weighted average current yield (as a percent)	10.20%
Senior Financing	680,795
Carrying Value, Net of Discounts and Deferred Origination Fees	$ 165,483	$ 132,995

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Accumulated Other Comprehensive Loss of the Company (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance		$ (6,980,000)
Ending Balance	(11,810,000)	(6,980,000)
Deferred net losses from terminated hedges	11,300,000	11,800,000
SL Green Realty Corp
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	(6,980,000)
Other comprehensive (loss) income before reclassifications	(7,789,000)
Amounts reclassified from accumulated other comprehensive income	2,959,000
Ending Balance	(11,810,000)
SL Green Realty Corp | Net unrealized loss on derivative instruments
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	(9,498,000)
Other comprehensive (loss) income before reclassifications	(7,198,000)
Amounts reclassified from accumulated other comprehensive income	2,641,000
Ending Balance	(14,055,000)
SL Green Realty Corp | Unrealized gain and (loss) on marketable securities
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	2,613,000
Other comprehensive (loss) income before reclassifications	597,000
Amounts reclassified from accumulated other comprehensive income	0
Ending Balance	3,210,000
SL Green Realty Corp | Joint venture | Net unrealized loss on derivative instruments
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	(95,000)
Other comprehensive (loss) income before reclassifications	(1,188,000)
Amounts reclassified from accumulated other comprehensive income	318,000
Ending Balance	$ (965,000)

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Investment in Unconsolidated Joint Ventures (Details) (USD $)	1 Months Ended
	Mar. 31, 2015 sqft	Feb. 28, 2015 property	Dec. 31, 2014
General information on each joint venture
Net equity investment in VIEs in which the entity is not primary beneficiary	$ 97,900,000		$ 146,200,000
Approximate Square Feet (sqft)	34,848,769
Loans Receivable, Gross, Commercial, Acquisition	145,666,000		145,875,000
100 Park Avenue
General information on each joint venture
Ownership Percentage	49.90%
Economic Interest (as a percent)	49.90%
Approximate Square Feet (sqft)	834,000
Acquisition Price	95,800,000
717 Fifth Avenue
General information on each joint venture
Ownership Percentage	10.92%
Economic Interest (as a percent)	10.92%
Approximate Square Feet (sqft)	119,500
Acquisition Price	251,900,000
800 Third Avenue
General information on each joint venture
Ownership Percentage	60.52%
Economic Interest (as a percent)	60.52%
Approximate Square Feet (sqft)	526,000
Acquisition Price	285,000,000
Additional Ownership Percentage Acquired	17.56%
Additional Cost for additional interest in joint venture	67,500,000
1745 Broadway
General information on each joint venture
Ownership Percentage	56.88%
Economic Interest (as a percent)	56.88%
Approximate Square Feet (sqft)	674,000
Acquisition Price	520,000,000
Jericho Plaza
General information on each joint venture
Ownership Percentage	20.26%
Economic Interest (as a percent)	20.26%
Approximate Square Feet (sqft)	640,000
Acquisition Price	210,000,000
The Meadows
General information on each joint venture
Ownership Percentage	50.00%
Economic Interest (as a percent)	50.00%
Approximate Square Feet (sqft)	582,100
Acquisition Price	111,500,000
600 Lexington Avenue
General information on each joint venture
Ownership Percentage	55.00%
Economic Interest (as a percent)	55.00%
Approximate Square Feet (sqft)	303,515
Acquisition Price	193,000,000
11 West 34th Street
General information on each joint venture
Ownership Percentage	30.00%
Economic Interest (as a percent)	30.00%
Approximate Square Feet (sqft)	17,150
Acquisition Price	10,800,000
7 Renaissance
General information on each joint venture
Ownership Percentage	50.00%
Economic Interest (as a percent)	50.00%
Approximate Square Feet (sqft)	65,641
Acquisition Price	4,000,000
3 Columbus Circle
General information on each joint venture
Ownership Percentage	48.90%
Economic Interest (as a percent)	48.90%
Approximate Square Feet (sqft)	741,500
Acquisition Price	500,000,000
280 Park Avenue
General information on each joint venture
Ownership Percentage	50.00%
Economic Interest (as a percent)	50.00%
Approximate Square Feet (sqft)	1,219,158
Acquisition Price	400,000,000
1552-1560 Broadway
General information on each joint venture
Ownership Percentage	50.00%
Economic Interest (as a percent)	50.00%
Approximate Square Feet (sqft)	35,897
Acquisition Price	136,550,000
724 Fifth Avenue
General information on each joint venture
Ownership Percentage	50.00%
Economic Interest (as a percent)	50.00%
Approximate Square Feet (sqft)	65,040
Acquisition Price	223,000,000
10 East 53rd Street
General information on each joint venture
Ownership Percentage	55.00%
Economic Interest (as a percent)	55.00%
Approximate Square Feet (sqft)	354,300
Acquisition Price	252,500,000
33 Beekman
General information on each joint venture
Ownership Percentage	45.90%
Economic Interest (as a percent)	45.90%
Approximate Square Feet (sqft)	0
Acquisition Price	31,000,000
Number of Floors of Student Housing	30
521 Fifth Avenue
General information on each joint venture
Ownership Percentage	50.50%
Economic Interest (as a percent)	50.50%
Approximate Square Feet (sqft)	460,000
Acquisition Price	315,000,000
21 East 66th Street
General information on each joint venture
Ownership Percentage	32.28%
Economic Interest (as a percent)	32.28%
Approximate Square Feet (sqft)	16,736
Acquisition Price	75,000,000
315 West 36th Street
General information on each joint venture
Ownership Percentage	35.50%
Economic Interest (as a percent)	35.50%
Approximate Square Feet (sqft)	147,619
Acquisition Price	45,000,000
650 Fifth Avenue
General information on each joint venture
Ownership Percentage	50.00%
Economic Interest (as a percent)	50.00%
Approximate Square Feet (sqft)	32,324
Acquisition Price	0
121 Greene Street
General information on each joint venture
Ownership Percentage	50.00%
Economic Interest (as a percent)	50.00%
Approximate Square Feet (sqft)	7,131
Acquisition Price	27,400,000
175-225 Third Street
General information on each joint venture
Ownership Percentage	95.00%
Economic Interest (as a percent)	95.00%
Approximate Square Feet (sqft)	0
Acquisition Price	74,600,000
55 West 46th Street
General information on each joint venture
Ownership Percentage	25.00%
Economic Interest (as a percent)	25.00%
Approximate Square Feet (sqft)	347,000
Acquisition Price	295,000,000
Stonehenge Portfolio
General information on each joint venture
Approximate Square Feet (sqft)	2,046,733
Acquisition Price	36,668,000	40,200,000
Increase in real estate investment ownership interest		3,500,000
Number of Joint Venture Properties with an Increased Ownership Interest		6
1552 Broadway
General information on each joint venture
Approximate Square Feet (sqft)	13,045
Three Retail and Two Residential Units | 21 East 66th Street
General information on each joint venture
Ownership Percentage	32.28%
Number of Stores	3
Number Of Residential Units	2
Three Residential Units | 21 East 66th Street
General information on each joint venture
Ownership Percentage	16.14%
Number Of Residential Units	3
Series M Preferred Units
General information on each joint venture
Preferred Units (as a percent)		3.75%
Series M Preferred Units | Stonehenge Portfolio
General information on each joint venture
Issuance of aggregate liquidation preference of preferred units		40,000,000
Mezzanine loan and preferred equity due March 2016
General information on each joint venture
Loans Receivable, Gross, Commercial, Acquisition	99,702,000		99,629,000
Mezzanine loan due February 2022
General information on each joint venture
Loans Receivable, Gross, Commercial, Acquisition	$ 45,964,000		$ 46,246,000

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Debt and Preferred Equity Investments (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Sep. 30, 2014
Debt investment
Increase in debt and preferred equity investments (net of discounts), including investments classified as held-for-sale	$ 166,900,000	$ 189,400,000
Decrease in debt and preferred equity investments (net of discounts), including investments classified as held-for-sale	27,000,000	500,000
Aggregate weighted average current yield (as a percent)	10.27%
Debt Investments Held [Abstract]
Carrying Value, Net of Discounts and Deferred Origination Fees	1,548,739,000		1,408,804,000
Debt investment
Debt Investments Held [Abstract]
Future Funding Obligations	122,209,000
Senior Financing	5,104,009,000
Carrying Value, Net of Discounts and Deferred Origination Fees	1,383,256,000		1,275,809,000
Total fixed rate
Debt Investments Held [Abstract]
Future Funding Obligations	10,787,000
Senior Financing	2,853,100,000
Carrying Value, Net of Discounts and Deferred Origination Fees	564,648,000		582,174,000
Total fixed rate | Junior Mortgage Participation/Mezzanine Loan, February 2016
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	205,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	71,291,000		70,688,000
Total fixed rate | Junior Mortgage Participation/Mezzanine Loan, Various
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	45,863,000		45,611,000
Total fixed rate | Junior Mortgage Participation, June 2016
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	133,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	49,000,000		49,000,000
Total fixed rate | Mezzanine Loan, November 2016
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	165,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	71,721,000		71,656,000
Total fixed rate | Junior Mortgage Participation/Mezzanine Loan, March 2017
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	1,109,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	100,758,000		98,934,000
Total fixed rate | Mezzanine Loan, March 2017
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	65,868,000		65,770,000
Total fixed rate | Mezzanine Loan, June 2017
Debt Investments Held [Abstract]
Future Funding Obligations	10,787,000
Senior Financing	502,100,000
Carrying Value, Net of Discounts and Deferred Origination Fees	30,264,000		24,608,000
Amount participated out	41,300,000
Total fixed rate | Mezzanine Loan, July 2018
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	539,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	49,622,000		49,629,000
Total fixed rate | Mortgage Loan, February 2019
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	26,222,000		26,209,000
Loan acquired				26,400,000
Discount amount				200,000
Total fixed rate | Mortgage Loan, August 2019
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	607,000		637,000
Total fixed rate | Mezzanine Loan, September 2021
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	15,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	3,500,000		3,500,000
Total fixed rate | Mezzanine Loan, November 2023
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	90,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	19,932,000		19,930,000
Amount participated out	5,000,000
Total fixed rate | Mezzanine Loan, January 2025
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	95,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	30,000,000		30,000,000
Total fixed rate | Mezzanine Loan Repaid in February 2015
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	0		14,068,000
Total fixed rate | Junior Mortgage Participation Repaid in March 2015
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	0		11,934,000
Total fixed rate | Junior Mortgage Participation, Related To Mortgage Loan, February 2019
Debt Investments Held [Abstract]
Loan acquired				5,700,000
Discount amount				5,700,000
Total fixed rate | Junior Mortgage Participation, February 2016
Debt Investments Held [Abstract]
Carrying amount of Notes	22,800,000
Total fixed rate | Mezzanine Loan, May 2016
Debt Investments Held [Abstract]
Carrying amount of Notes	23,100,000
Total floating rate
Debt Investments Held [Abstract]
Future Funding Obligations	111,422,000
Senior Financing	2,250,909,000
Carrying Value, Net of Discounts and Deferred Origination Fees	818,608,000		693,635,000
Total floating rate | Mezzanine Loan, November 2016
Debt Investments Held [Abstract]
Future Funding Obligations	514,000
Senior Financing	172,105,000
Carrying Value, Net of Discounts and Deferred Origination Fees	36,917,000		33,726,000
Total floating rate | Mezzanine Loan, Repaid April 2015
Debt Investments Held [Abstract]
Future Funding Obligations	611,000
Senior Financing	50,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	44,647,000		37,322,000
Total floating rate | Mortgage Mezzanine Loan, June 2015
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	109,802,000		109,527,000
Total floating rate | Mezzanine Loan, September 2015
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	110,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	49,745,000		49,614,000
Total floating rate | Mezzanine Loan, March 2016
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	775,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	73,699,000		73,402,000
Total floating rate | Mezzanine Loan, June 2016
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	160,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	22,586,000		22,573,000
Amount participated out	7,400,000
Total floating rate | Mezzanine Loan, July 2016
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	115,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	24,911,000		24,910,000
Total floating rate | Mezzanine Loan, November 2016
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	360,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	99,144,000		99,023,000
Total floating rate | Mezzanine Loan, December 2016
Debt Investments Held [Abstract]
Future Funding Obligations	17,104,000
Senior Financing	117,202,000
Carrying Value, Net of Discounts and Deferred Origination Fees	43,906,000		42,750,000
Total floating rate | Mezzanine Loan, December 2016
Debt Investments Held [Abstract]
Future Funding Obligations	2,120,000
Senior Financing	33,915,000
Carrying Value, Net of Discounts and Deferred Origination Fees	11,855,000		11,835,000
Total floating rate | Mortgage/Mezzanine Loan, January 2017
Debt Investments Held [Abstract]
Future Funding Obligations	78,975,000
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	111,613,000		0
Amount participated out	25,000,000
Total floating rate | Mezzanine Loan, January 2017
Debt Investments Held [Abstract]
Future Funding Obligations	8,781,000
Senior Financing	92,294,000
Carrying Value, Net of Discounts and Deferred Origination Fees	20,955,000		20,651,000
Total floating rate | Jr. Mortgage Participation/Mezzanine Loan, July 2017
Debt Investments Held [Abstract]
Future Funding Obligations	2,522,000
Senior Financing	112,393,000
Carrying Value, Net of Discounts and Deferred Origination Fees	38,905,000		38,524,000
Total floating rate | Mortgage/Mezzanine Loan, July 2017
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	22,822,000		22,803,000
Total floating rate | Mortgage/Mezzanine Loan, September 2017
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	16,861,000		16,848,000
Total floating rate | Mezzanine Loan, November 2017
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	60,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	14,869,000		14,859,000
Total floating rate | Mortgage Mezzanine Loan, December 2017
Debt Investments Held [Abstract]
Future Funding Obligations	795,000
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	14,868,000		14,845,000
Amount participated out	5,100,000
Total floating rate | Junior Mortgage Participation/Mezzanine Loan, July 2018
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	55,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	20,528,000		20,533,000
Total floating rate | Mortgage Mezzanine Loan, February 2019
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	0
Carrying Value, Net of Discounts and Deferred Origination Fees	18,159,000		18,083,000
Total floating rate | Mezzanine Loan, March 2019
Debt Investments Held [Abstract]
Future Funding Obligations	0
Senior Financing	38,000,000
Carrying Value, Net of Discounts and Deferred Origination Fees	$ 21,816,000		$ 21,807,000

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Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

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

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

	March 31, 2015			December 31, 2014
Identified intangible assets (included in other assets):
Gross amount	$	968,763		$	664,297
Accumulated amortization	(408,884		)	(383,236		)
Net	$	559,879		$	281,061
Identified intangible liabilities (included in deferred revenue):
Gross amount	$	847,326		$	655,755
Accumulated amortization	(506,578		)	(483,948		)
Net	$	340,748		$	171,807

Schedule of marketable securities

At March 31, 2015 and December 31, 2014, we held the following marketable securities (in thousands):

	March 31, 2015		December 31, 2014
Equity marketable securities	$	4,287	$	4,332
Mortgage-backed securities	43,429		35,097
Total marketable securities available-for-sale	$	47,716	$	39,429

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum lease payments under capital leases and non cancellable operating leases

The following is a schedule of future minimum lease payments under capital leases and non-cancellable operating leases with initial terms in excess of one year as of March 31, 2015 (in thousands):

	Capital lease			Non-cancellable operating leases
Remaining 2015	$	109		$	22,869
2016	170			30,612
2017	291			30,845
2018	291			30,845
2019	315			30,862
Thereafter	56,568			720,698
Total minimum lease payments	57,744			$	866,731
Less amount representing interest	(36,827		)
Capital lease obligations	$	20,917

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Related Party Transactions

3 Months Ended

Mar. 31, 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. The Service Corporation 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 income, was $1.0 million and $0.9 million for the three months ended March 31, 2015 and 2014, respectively. We also recorded expenses of $4.0 million and $3.8 million for the three months ended March 31, 2015 and 2014, respectively, for these services (excluding services provided directly to tenants).

Management Fees

S.L. Green Management Corp., a consolidated entity, receives property management fees from an entity in which Stephen L. Green owns an interest. We received management fees from such entity of $127,200 and $104,800 for the three months ended March 31, 2015 and 2014, respectively.

Other

Amounts due from related parties at March 31, 2015 and December 31, 2014 consisted of the following (in thousands):

	March 31, 2015		December 31, 2014
Due from joint ventures	$	1,214	$	1,254
Other	10,874		10,481
Related party receivables	$	12,088	$	11,735

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Accumulated Other Comprehensive Loss of the Company

3 Months Ended

Mar. 31, 2015

Accumulated Other Comprehensive Income (Loss) [Line Items]

Accumulated Other Comprehensive Loss of the Company/Operating Partnership

Stockholders’ Equity of the Company

Common Stock

Our authorized capital stock consists of 260,000,000 shares, $0.01 par value per share, consisting of 160,000,000 shares of common stock, $0.01 par value per share, 75,000,000 shares of excess stock, at $0.01 par value per share, and 25,000,000 shares of preferred stock, par value $0.01 per share. As of March 31, 2015, 99,532,817 shares of common stock and no shares of excess stock were issued and outstanding.

At-The-Market Equity Offering Program

In June 2014, the Company, along with the Operating Partnership, entered into an "at-the-market" equity offering program, or ATM Program, to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 895,956 shares of our common stock for aggregate net proceeds of $113.4 million comprising the remaining balance of this ATM Program. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 895,956 units of limited partnership interest of the Operating Partnership.

In March 2015, the Company, along with the Operating Partnership, entered into a new ATM Program to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 56,680 shares of our common stock for aggregate net proceeds of $7.5 million. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 56,680 units of limited partnership interest of the Operating Partnership. As of March 31, 2015, $292.5 million remained available for issuance of common stock under the new ATM program.

Perpetual Preferred Stock

We have 9,200,000 shares of our 6.50% Series I Cumulative Redeemable Preferred Stock, or the Series I Preferred Stock, outstanding with a mandatory liquidation preference of $25.00 per share. The Series I Preferred stockholders receive annual dividends of $1.625 per share paid on a quarterly basis and dividends are cumulative, subject to certain provisions. We are entitled to redeem the Series I Preferred Stock at par for cash at our option on or after August 10, 2017. In August 2012, we received $221.9 million in net proceeds from the issuance of the Series I Preferred Stock, which were recorded net of underwriters' discount and issuance costs, and contributed the net proceeds to the Operating Partnership in exchange for 9,200,000 units of 6.50% Series I Cumulative Redeemable Preferred Units of limited partnership interest, or the Series I Preferred Units.

Dividend Reinvestment and Stock Purchase Plan

In February 2015, the Company filed a registration statement with the SEC for our dividend reinvestment and stock purchase plan, or DRSPP, which automatically became effective upon filing. The Company registered 3,500,000 shares of SL Green's common stock under the DRSPP. The DRSPP commenced on September 24, 2001.

During the three months ended March 31, 2015, the Company issued 775,161 shares of SL Green's common stock and received net proceeds of $99.5 million of proceeds from dividend reinvestments and/or stock purchases under the DRSPP. DRSPP shares may be issued at a discount to the market price.

Earnings per Share

SL Green's earnings per share for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic Earnings:
Income attributable to SL Green common stockholders	$	43,277	$	146,090
Effect of Dilutive Securities:
Redemption of units to common shares	1,743		4,729
Diluted Earnings:
Income attributable to SL Green common stockholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic Shares:
Weighted average common stock outstanding	98,402	95,117
Effect of Dilutive Securities:
Redemption of units to common shares	3,964	3,079
Stock-based compensation plans	653	520
Diluted weighted average common stock outstanding	103,019	98,716

SL Green has excluded 203,975 and 860,720 common stock equivalents from the diluted shares outstanding for the three months ended March 31, 2015 and 2014, respectively, as they were anti-dilutive.

SL Green Realty Corp

Accumulated Other Comprehensive Income (Loss) [Line Items]

Accumulated Other Comprehensive Loss of the Company/Operating Partnership

Accumulated Other Comprehensive Loss of the Company

The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of March 31, 2015 (in thousands):

	Net unrealized loss on derivative instruments(1)			SL Green’s share of joint venture net unrealized loss on derivative instruments(2)			Unrealized gain and (loss) on marketable securities		Total
Balance at December 31, 2014	(9,498		)	(95		)	2,613		(6,980		)
Other comprehensive (loss) income before reclassifications	(7,198		)	(1,188		)	597		(7,789		)
Amounts reclassified from accumulated other comprehensive income	2,641			318			—		2,959
Balance at March 31, 2015	$	(14,055	)	$	(965	)	$	3,210	$	(11,810	)

____________________________________________________________________

(1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of income. As of March 31, 2015 and December 31, 2014, the deferred net losses from these terminated hedges, which is included in accumulated other comprehensive loss relating to net unrealized loss on derivative instrument, was $11.3 million and $11.8 million, respectively.

(2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net income from unconsolidated joint ventures in the respective consolidated statements of income.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring

The following tables set forth the assets and liabilities that we measure at fair value on a recurring and non-recurring basis by their levels in the fair value hierarchy at March 31, 2015 and December 31, 2014 (in thousands):

	March 31, 2015
	Total		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	47,716	$	4,287	$	43,429	$	—
Interest rate swap agreements (included in other assets)	$	3	$	—	$	3	$	—
Liabilities:
Interest rate swap agreements (included in accrued interest payable and other liabilities)	$	16,983	$	—	$	16,983	$	—

	December 31, 2014
	Total		Level 1		Level 2		Level 3
Assets:
Marketable securities	$	39,429	$	4,332	$	35,097	$	—
Interest rate swap agreements (included in other assets)	$	2,174	—		2,174		—
Liabilities:
Interest rate swap agreements (included in accrued interest payable and other liabilities)	$	14,728	$	—	$	14,728	$	—

Fair Value, by Balance Sheet Grouping

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

	March 31, 2015				December 31, 2014
	Carrying Value		Fair Value		Carrying Value		Fair Value
Debt and preferred equity investments	$	1,548,739	(1)		$	1,408,804	(1)
Fixed rate debt	$	6,016,084	$	6,582,767	$	6,140,786	$	6,565,236
Variable rate debt	2,073,000		2,116,146		2,291,943		2,315,952
	$	8,089,084	$	8,698,913	$	8,432,729	$	8,881,188

____________________________________________________________________

(1) At March 31, 2015, debt and preferred equity investments had an estimated fair value ranging between $1.7 billion and $1.9 billion. At December 31, 2014, debt and preferred equity investments had an estimated fair value ranging between $1.5 billion and $1.8 billion.

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Corporate Indebtedness (Tables)

3 Months Ended

Mar. 31, 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 March 31, 2015 and December 31, 2014, respectively, by scheduled maturity date (dollars in thousands):

Issuance	March 31, 2015 Unpaid Principal Balance		March 31, 2015 Accreted Balance		December 31, 2014 Accreted Balance		Coupon Rate(1)		Effective Rate		Term (in Years)	Maturity Date
March 31, 2006(2)	$	255,308	$	255,261	$	255,250	6.00	%	6.00	%	10	March 31, 2016
October 12, 2010(3)	345,000		312,005		309,069		3.00	%	3.00	%	7	October 15, 2017
August 5, 2011(4)	250,000		249,760		249,744		5.00	%	5.00	%	7	August 15, 2018
March 16, 2010(4)	250,000		250,000		250,000		7.75	%	7.75	%	10	March 15, 2020
November 15, 2012(4)	200,000		200,000		200,000		4.50	%	4.50	%	10	December 1, 2022
June 27, 2005(2)(5)	7		7		7		4.00	%	4.00	%	20	June 15, 2025
March 26, 2007(6)	10,008		10,008		10,008		3.00	%	3.00	%	20	March 30, 2027
	$	1,310,323	$	1,277,041	$	1,274,078

____________________________________________________________________

(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 ROP.

(3) Issued by the Operating Partnership. Interest on these exchangeable notes is payable semi-annually on April 15 and October 15. The notes had an initial exchange rate representing an exchange price that was set at a 30.0% premium to the last reported sale price of SL Green's common stock on October 6, 2010, or $85.81. The initial exchange rate is subject to adjustment under certain circumstances. The current exchange rate is 12.1632 shares of SL Green's common stock per $1,000 principal amount of these notes. The notes are senior unsecured obligations of the Operating Partnership and are exchangeable upon the occurrence of specified events and during the period beginning on the twenty-second scheduled trading day prior to the maturity date and ending on the second business day prior to the maturity date, into cash or a combination of cash and shares of SL Green's common stock, if any, at our option. As a result of meeting specified events (as defined in the Indenture Agreement), these notes became exchangeable commencing January 1, 2015 and will remain exchangeable through June 30, 2015. The notes are guaranteed by ROP. On the issuance date, $78.3 million of the debt balance was recorded in equity. As of March 31, 2015, $32.9 million remained to be amortized into the debt balance.

(4) Issued by the Company, the Operating Partnership and ROP, as co-obligors.

(5) Exchangeable senior debentures which are currently callable at par. In addition, the debentures can be put to ROP, at the option of the holder at par plus accrued and unpaid interest, on June 15, 2015 and 2020 and upon the occurrence of certain change of control transactions. As a result of the acquisition of all outstanding shares of common stock of Reckson, or the Reckson Merger, the adjusted exchange rate for the debentures is 7.7461 shares of SL Green's common stock per $1,000 of principal amount of debentures and the adjusted reference dividend for the debentures is $1.3491. In April 2015, we redeemed the remaining outstanding debentures.

(6) Issued by the Operating Partnership. Interest on these remaining exchangeable notes is payable semi-annually on March 30 and September 30. The notes have an initial exchange rate representing an exchange price that was set at a 25.0% premium to the last reported sale price of the Company's common stock on March 20, 2007, or $173.30. The initial exchange rate is subject to adjustment under certain circumstances. The current exchange rate is 5.7952 shares of SL Green's common stock per $1,000 principal amount of these notes. The notes are senior unsecured obligations of the Operating Partnership and are exchangeable upon the occurrence of specified events and during the period beginning on the twenty-second scheduled trading day prior to the maturity date and ending on the second business day prior to the maturity date, into cash or a combination of cash and shares of SL Green's common stock, if any, at our option. The notes are currently redeemable at the Operating Partnership’s option. The Operating Partnership may be required to repurchase the notes on March 30, 2017 and 2022, and upon the occurrence of certain designated events.

Schedule of combined aggregate principal maturities

Combined aggregate principal maturities of mortgages and other loans payable, 2012 credit facility, trust preferred securities, senior unsecured notes and our share of joint venture debt as of March 31, 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		Trust Preferred Securities		Senior Unsecured Notes			Total		Joint Venture Debt
Remaining 2015	$	22,882	$	—	$	—	$	—	$	—	$	7	(1)	$	22,889	$	39,407
2016	47,360		100,311		—		—		—		255,308			402,979		534,026
2017	61,063		895,329		—		—		—		355,008			1,311,400		582,755
2018	64,462		16,000		—		—		—		250,000			330,462		2,196
2019	70,409		28,317		—		833,000		—		—			931,726		104,688
Thereafter	200,403		3,852,505		520,000		—		100,000		450,000			5,122,908		446,744
	$	466,579	$	4,892,462	$	520,000	$	833,000	$	100,000	$	1,310,323		$	8,122,364	$	1,709,816

__________________________________________________________________

(1) In April 2015, we redeemed the remaining outstanding 4.00% Exchangeable Senior Debentures due 2025.

Schedule of consolidated interest expense, excluding capitalized interest

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

	Three Months Ended March 31,
	2015			2014
Interest expense	$	76,459		$	76,708
Interest income	(652		)	(530		)
Interest expense, net	$	75,807		$	76,178
Interest capitalized	$	8,558		$	4,271

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Consolidated Statements of Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating expenses, paid to related parties	$ 3,808	$ 3,513
SL Green Operating Partnership
Operating expenses, paid to related parties	$ 3,808	$ 3,513

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Financial Instruments: Derivatives and Hedging (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financial Instruments: Derivatives and Hedging
Fair Value	$ 3,000		$ 2,174,000
Fair Value	(16,983,000)		(14,728,000)
Derivative, Fair Value, Net	(16,980,000)
Loss from settlement of hedges included in accumulated other comprehensive loss (less than for $1,000)	1,000	11,000
Fair value of derivatives in a net liability position	18,100,000
Aggregate termination value	18,100,000
Estimated current balance held in accumulated other comprehensive loss to be reclassified into earnings within the next 12 months	9,300,000
Share of joint venture of accumulated other comprehensive loss reclassified into equity in net income from unconsolidated joint ventures within the next 12 months	1,100,000
Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)	(8,758,000)	(1,797,000)
Amount of Loss Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion)	3,078,000	1,965,000
Amount of (Loss) or Gain Recognized into Income (Ineffective Portion)	(426,000)	1,000
Joint venture
Financial Instruments: Derivatives and Hedging
Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)	(1,237,000)	(1,746,000)
Amount of Loss Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion)	331,000	1,273,000
Amount of (Loss) or Gain Recognized into Income (Ineffective Portion)	(16,000)	0
Interest Rate Cap- Sold Expiring in May 2016
Financial Instruments: Derivatives and Hedging
Notional Value	504,000,000
Strike Rate (as a percent)	4.75%
Fair Value	(1,000)
Interest Rate Cap Expiring in May 2016
Financial Instruments: Derivatives and Hedging
Notional Value	504,000,000
Strike Rate (as a percent)	4.75%
Fair Value	1,000
Interest Rate Cap Expiring In May 2016
Financial Instruments: Derivatives and Hedging
Notional Value	500,000,000
Strike Rate (as a percent)	4.75%
Fair Value	1,000
Interest Rate Cap- Sold Expiring in May 2016
Financial Instruments: Derivatives and Hedging
Notional Value	500,000,000
Strike Rate (as a percent)	4.75%
Fair Value	(1,000)
Interest Rate Cap Expiring In May 2016
Financial Instruments: Derivatives and Hedging
Notional Value	446,000,000
Strike Rate (as a percent)	4.75%
Fair Value	1,000
Interest Rate Cap Expiring in November, 2015
Financial Instruments: Derivatives and Hedging
Notional Value	263,426,000
Strike Rate (as a percent)	6.00%
Fair Value	0
Interest Rate Cap Expiring in September 2015
Financial Instruments: Derivatives and Hedging
Notional Value	137,500,000
Strike Rate (as a percent)	4.00%
Fair Value	0
Interest Rate Swap Expiring in December 2017
Financial Instruments: Derivatives and Hedging
Notional Value	200,000,000
Strike Rate (as a percent)	0.9375%
Fair Value	(326,000)
Interest Rate Swap Expiring in December 2017
Financial Instruments: Derivatives and Hedging
Notional Value	150,000,000
Strike Rate (as a percent)	0.94%
Fair Value	(251,000)
Interest Rate Swap Expiring in December 2017
Financial Instruments: Derivatives and Hedging
Notional Value	150,000,000
Strike Rate (as a percent)	0.94%
Fair Value	(251,000)
Interest Rate Swap Expiring in December 2017
Financial Instruments: Derivatives and Hedging
Notional Value	144,000,000
Strike Rate (as a percent)	2.236%
Fair Value	(5,108,000)
Interest Rate Swap Expiring in December 2017
Financial Instruments: Derivatives and Hedging
Notional Value	86,400,000
Strike Rate (as a percent)	1.9475%
Fair Value	(2,407,000)
Interest Rate Swap Expiring in December 2017
Financial Instruments: Derivatives and Hedging
Notional Value	72,000,000
Strike Rate (as a percent)	2.31%
Fair Value	(2,696,000)
Interest Rate Swap Expiring in December 2017
Financial Instruments: Derivatives and Hedging
Notional Value	72,000,000
Strike Rate (as a percent)	1.345%
Fair Value	(862,000)
Interest Rate Swap Expiring in December 2017
Financial Instruments: Derivatives and Hedging
Notional Value	72,000,000
Strike Rate (as a percent)	2.31%
Fair Value	(2,696,000)
Interest Rate Swap Expiring in December 2017
Financial Instruments: Derivatives and Hedging
Notional Value	57,600,000
Strike Rate (as a percent)	1.99%
Fair Value	(1,669,000)
Interest Rate Swap Expiring in June 2016
Financial Instruments: Derivatives and Hedging
Notional Value	30,000,000
Strike Rate (as a percent)	2.295%
Fair Value	(682,000)
Interest Rate Swap Expiring in February, 2015
Financial Instruments: Derivatives and Hedging
Notional Value	8,018,000
Strike Rate (as a percent)	0.852%
Fair Value	(33,000)
Interest Rate Swap
Financial Instruments: Derivatives and Hedging
Amount of Loss Recognized in Other Comprehensive Loss (Effective Portion)	(7,521,000)	(51,000)
Amount of Loss Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion)	2,747,000	692,000
Amount of (Loss) or Gain Recognized into Income (Ineffective Portion)	$ (410,000)	$ 1,000

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Consolidated Statement of Capital (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash distribution declared, per common share (in dollars per share)	$ 0.60	$ 0.50
SL Green Operating Partnership
Cash distribution declared, per common share (in dollars per share)	$ 0.60

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Significant Accounting Policies (Details 4) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accounting Policies [Abstract]
Days past due for income recognition on debt and preferred equity investments to be suspended	90 days
Income taxes
Federal, state and local tax provision	$ 0.3	$ 2.9

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Partners' Capital of the Operating Partnership - EPS (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stockholders' Equity
Income attributable to SL Green common stockholders	$ 43,277	$ 146,090
Basic weighted average common shares outstanding (shares)	98,402,000	95,117,000
Common stock shares excluded from the diluted shares outstanding (shares)	203,975	860,720
SL Green Operating Partnership
Stockholders' Equity
Income attributable to SL Green common stockholders	$ 45,020	$ 150,819
Basic weighted average common shares outstanding (shares)	102,366,000	98,196,000
Stock-based compensation plans (shares)	653,000	520,000
Diluted weighted average common units outstanding (shares)	103,019,000	98,716,000
Common stock shares excluded from the diluted shares outstanding (shares)	203,975	860,720

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Deferred Costs (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred leasing	$ 389,935	$ 385,555
Deferred financing	195,474	193,776
Deferred costs, gross	585,409	579,331
Less accumulated amortization	(258,854)	(251,369)
Deferred costs, net	$ 326,555	$ 327,962

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Accumulated Other Comprehensive Loss of the Operating Partnership

3 Months Ended

Mar. 31, 2015

Accumulated Other Comprehensive Income (Loss) [Line Items]

Accumulated Other Comprehensive Loss of the Company/Operating Partnership

Stockholders’ Equity of the Company

Common Stock

Our authorized capital stock consists of 260,000,000 shares, $0.01 par value per share, consisting of 160,000,000 shares of common stock, $0.01 par value per share, 75,000,000 shares of excess stock, at $0.01 par value per share, and 25,000,000 shares of preferred stock, par value $0.01 per share. As of March 31, 2015, 99,532,817 shares of common stock and no shares of excess stock were issued and outstanding.

At-The-Market Equity Offering Program

In June 2014, the Company, along with the Operating Partnership, entered into an "at-the-market" equity offering program, or ATM Program, to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 895,956 shares of our common stock for aggregate net proceeds of $113.4 million comprising the remaining balance of this ATM Program. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 895,956 units of limited partnership interest of the Operating Partnership.

In March 2015, the Company, along with the Operating Partnership, entered into a new ATM Program to sell an aggregate of $300.0 million of SL Green's common stock. During the three months ended March 31, 2015, we sold 56,680 shares of our common stock for aggregate net proceeds of $7.5 million. The net proceeds from these offerings were contributed to the Operating Partnership in exchange for 56,680 units of limited partnership interest of the Operating Partnership. As of March 31, 2015, $292.5 million remained available for issuance of common stock under the new ATM program.

Perpetual Preferred Stock

We have 9,200,000 shares of our 6.50% Series I Cumulative Redeemable Preferred Stock, or the Series I Preferred Stock, outstanding with a mandatory liquidation preference of $25.00 per share. The Series I Preferred stockholders receive annual dividends of $1.625 per share paid on a quarterly basis and dividends are cumulative, subject to certain provisions. We are entitled to redeem the Series I Preferred Stock at par for cash at our option on or after August 10, 2017. In August 2012, we received $221.9 million in net proceeds from the issuance of the Series I Preferred Stock, which were recorded net of underwriters' discount and issuance costs, and contributed the net proceeds to the Operating Partnership in exchange for 9,200,000 units of 6.50% Series I Cumulative Redeemable Preferred Units of limited partnership interest, or the Series I Preferred Units.

Dividend Reinvestment and Stock Purchase Plan

In February 2015, the Company filed a registration statement with the SEC for our dividend reinvestment and stock purchase plan, or DRSPP, which automatically became effective upon filing. The Company registered 3,500,000 shares of SL Green's common stock under the DRSPP. The DRSPP commenced on September 24, 2001.

During the three months ended March 31, 2015, the Company issued 775,161 shares of SL Green's common stock and received net proceeds of $99.5 million of proceeds from dividend reinvestments and/or stock purchases under the DRSPP. DRSPP shares may be issued at a discount to the market price.

Earnings per Share

SL Green's earnings per share for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic Earnings:
Income attributable to SL Green common stockholders	$	43,277	$	146,090
Effect of Dilutive Securities:
Redemption of units to common shares	1,743		4,729
Diluted Earnings:
Income attributable to SL Green common stockholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic Shares:
Weighted average common stock outstanding	98,402	95,117
Effect of Dilutive Securities:
Redemption of units to common shares	3,964	3,079
Stock-based compensation plans	653	520
Diluted weighted average common stock outstanding	103,019	98,716

SL Green has excluded 203,975 and 860,720 common stock equivalents from the diluted shares outstanding for the three months ended March 31, 2015 and 2014, respectively, as they were anti-dilutive.

SL Green Operating Partnership

Accumulated Other Comprehensive Income (Loss) [Line Items]

Accumulated Other Comprehensive Loss of the Company/Operating Partnership

Partners' Capital of the Operating Partnership

The Company is the sole general partner of the Operating Partnership and at March 31, 2015 owned 99,532,817 general and limited partnership interests in the Operating Partnership and 9,200,000 Series I Preferred Units. Partnership interests in the Operating Partnership are denominated as “common units of limited partnership interest” (also referred to as “OP Units”) or “preferred units of limited partnership interest” (also referred to as “Preferred Units”). All references to OP Units and Preferred Units outstanding exclude such units held by the Company. A holder of an OP Unit may present such OP Unit to the Operating Partnership for redemption at any time (subject to restrictions agreed upon at the issuance of OP Units to particular holders that may restrict such right for a period of time, generally one year from issuance). Upon presentation of an OP Unit for redemption, the Operating Partnership must redeem such OP Unit in exchange for the cash equal to the then value of a share of common stock of the Company, except that the Company may, at its election, in lieu of cash redemption, acquire such OP Unit for one share of common stock. Because the number of shares of common stock outstanding at all times equals the number of OP Units that the Company owns, one share of common stock is generally the economic equivalent of one OP Unit, and the quarterly distribution that may be paid to the holder of an OP Unit equals the quarterly dividend that may be paid to the holder of a share of common stock. Each series of Preferred Units makes a distribution that is set in accordance with an amendment to the partnership agreement of the Operating Partnership. Preferred Units may also be convertible into OP Units at the election of the holder thereof or the Company, subject to the terms of such Preferred Units.

Net income (loss) allocated to the preferred unitholders and common unitholders reflects their pro rata share of net income (loss) and distributions.

Limited Partner Units

As of March 31, 2015, limited partners other than SL Green owned 3.78%, or 3,912,944 common units, of the Operating Partnership.

Preferred Units

Preferred units not owned by SL Green are further described in Note 11, “Noncontrolling Interests on the Company’s Consolidated Financial Statements - Preferred Units of Limited Partnership Interest in the Operating Partnership.”

Earnings per Unit

The Operating Partnership's earnings per unit for the three months ended March 31, 2015 and 2014 are computed as follows (in thousands):

	Three Months Ended March 31,
Numerator	2015		2014
Basic and Diluted Earnings:
Income attributable to SLGOP common unitholders	$	45,020	$	150,819

	Three Months Ended March 31,
Denominator	2015	2014
Basic units:
Weighted average common units outstanding	102,366	98,196
Effect of Dilutive Securities:
Stock-based compensation plans	653	520
Diluted weighted average common units outstanding	103,019	98,716

The Operating Partnership has excluded 203,975 and 860,720 common unit equivalents from the diluted units outstanding for the three months ended March 31, 2015 and 2014, respectively, as they were anti-dilutive.

Accumulated Other Comprehensive Loss of the Operating Partnership

The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of March 31, 2015 (in thousands):

	Net unrealized loss on derivative instruments(1)			SLGOP’s share of joint venture net unrealized loss on derivative instruments(2)			Unrealized gain and (loss) on marketable securities		Total
Balance at December 31, 2014	(9,845		)	(100		)	2,689		(7,256		)
Other comprehensive (loss) income before reclassifications	(7,521		)	(1,237		)	650		(8,108		)
Amounts reclassified from accumulated other comprehensive income	2,747			331			—		3,078
Balance at March 31, 2015	$	(14,619	)	$	(1,006	)	$	3,339	$	(12,286	)

____________________________________________________________________

(1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of income. As of March 31, 2015 and December 31, 2014, the deferred net losses from these terminated hedges, which is included in accumulated other comprehensive loss relating to net unrealized loss on derivative instrument, was $11.7 million and $12.2 million, respectively.

(2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net income from unconsolidated joint ventures in the respective consolidated statements of income.

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Corporate Indebtedness (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Interest expense
Interest expense	$ 76,459	$ 76,708
Interest income	(652)	(530)
Interest expense, net	75,807	76,178
Interest capitalized	$ 8,558	$ 4,271

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Investment in Unconsolidated Joint Ventures (Tables)

3 Months Ended

Mar. 31, 2015

Equity Method Investments and Joint Ventures [Abstract]

Schedule of general information on joint ventures

As of March 31, 2015 and December 31, 2014, the carrying value for acquisition, development and construction arrangements were as follows (in thousands):

Loan Type	March 31, 2015		December 31, 2014		Initial Maturity Date
Mezzanine loan and preferred equity	$	99,702	$	99,629	March 2016
Mezzanine loan(1)	45,964		46,246		February 2022
	$	145,666	$	145,875

The table below provides general information on each of our joint ventures as of March 31, 2015:

Property	Partner	Ownership Interest	Economic Interest	Approximate Square Feet	Acquisition Date	Acquisition Price(1) (in thousands)
100 Park Avenue	Prudential Real Estate Investors	49.90%	49.90%	834,000	January 2000	$	95,800
717 Fifth Avenue	Jeff Sutton/Private Investor	10.92%	10.92%	119,500	September 2006	251,900
800 Third Avenue(2)	Private Investors	60.52%	60.52%	526,000	December 2006	285,000
1745 Broadway	Ivanhoe Cambridge, Inc.	56.88%	56.88%	674,000	April 2007	520,000
Jericho Plaza	Onyx Equities/Credit Suisse	20.26%	20.26%	640,000	April 2007	210,000
The Meadows	Onyx Equities	50.00%	50.00%	582,100	September 2007	111,500
600 Lexington Avenue	Canadian Pension Plan Investment Board	55.00%	55.00%	303,515	May 2010	193,000

Property	Partner	Ownership Interest	Economic Interest	Approximate Square Feet	Acquisition Date	Acquisition Price(1) (in thousands)
11 West 34th Street	Private Investor/ Jeff Sutton	30.00%	30.00%	17,150	December 2010	10,800
7 Renaissance	Louis Cappelli	50.00%	50.00%	65,641	December 2010	4,000
3 Columbus Circle(3)	The Moinian Group	48.90%	48.90%	741,500	January 2011	500,000
280 Park Avenue	Vornado Realty Trust	50.00%	50.00%	1,219,158	March 2011	400,000
1552-1560 Broadway(4)	Jeff Sutton	50.00%	50.00%	35,897	August 2011	136,550
724 Fifth Avenue	Jeff Sutton	50.00%	50.00%	65,040	January 2012	223,000
10 East 53rd Street	Canadian Pension Plan Investment Board	55.00%	55.00%	354,300	February 2012	252,500
33 Beekman(5)	Harel Insurance and Finance/TNG 33 LLC	45.90%	45.90%	—	August 2012	31,000
521 Fifth Avenue	Plaza Global Real Estate Partners LP	50.50%	50.50%	460,000	November 2012	315,000
21 East 66th Street(6)	Private Investors	32.28%	32.28%	16,736	December 2012	75,000
315 West 36th Street	Private Investors	35.50%	35.50%	147,619	December 2012	45,000
650 Fifth Avenue(7)	Jeff Sutton	50.00%	50.00%	32,324	November 2013	—
121 Greene Street	Jeff Sutton	50.00%	50.00%	7,131	September 2014	27,400
175-225 Third Street	KCLW 3rd Street LLC/LIVWRK LLC	95.00%	95.00%	—	October 2014	74,600
55 West 46th Street	Prudential Real Estate Investors	25.00%	25.00%	347,000	November 2014	295,000
Stonehenge Portfolio(8)	Various	Various	Various	2,046,733	February 2015	36,668

____________________________________________________________________

(1) Acquisition price represents the actual or implied gross purchase price for the joint venture.

(2) In March 2015, we acquired an additional 17.56% interest in this joint venture for $67.5 million.

(3) As a result of the sale of a condominium interest in September 2012, Young & Rubicam, Inc., or Y&R, owns a portion of the property, floors three through eight referred to as Y&R units. Because the joint venture has an option to repurchase the Y&R units, the gain associated with this sale was deferred.

(4) The purchase price represents only the purchase of the 1552 Broadway interest which comprised approximately 13,045 square feet. The joint venture also owns a long-term leasehold interest in the retail space and certain other spaces at 1560 Broadway, which is adjacent to 1552 Broadway.

(5) The property is currently being developed into a 30-story dormitory building, which will be conveyed to Pace University upon its completion under a long-term ground lease arrangement.

(6) We hold a 32.28% interest in three retail and two residential units at the property and a 16.14% interest in three residential units at the property.

(7) The joint venture owns a long-term leasehold interest in the retail space at 650 Fifth Avenue. In connection with the ground lease obligation, SLG provided a performance guaranty and our joint venture partner executed a contribution agreement to reflect its pro rata obligation. In the event the property is converted into a condominium unit and the landlord elects the purchase option, the joint venture shall be obligated to acquire the unit at the then fair value.

(8) In February 2015, we acquired an interest in a portfolio of Manhattan residential and retail properties for $40.2 million, of which $3.5 million represented an increase in ownership interest in six of our existing consolidated joint venture properties.  The $40.2 million of consideration included the issuance of $40.0 million aggregate liquidation preference of 3.75% Series M Preferred Units of limited partnership interest of the Operating Partnership.

Schedule of first mortgage notes payable collateralized by the respective joint venture properties and assignment of leases

The first mortgage notes and other loans payable collateralized by the respective joint venture properties and assignment of leases at March 31, 2015 and December 31, 2014, respectively, are as follows (amounts in thousands):

Property	Maturity Date	Interest Rate(1)		March 31, 2015		December 31, 2014
Fixed Rate Debt:
7 Renaissance	December 2015	10.00	%	$	2,147	$	2,147
11 West 34th Street	January 2016	4.82	%	16,825		16,905
280 Park Avenue	June 2016	6.57	%	698,249		700,171
1745 Broadway	January 2017	5.68	%	340,000		340,000
Jericho Plaza	May 2017	5.65	%	163,750		163,750
800 Third Avenue	August 2017	6.00	%	20,910		20,910
315 West 36th Street	December 2017	3.16	%	25,000		25,000
521 Fifth Avenue	November 2019	3.73	%	170,000		170,000
717 Fifth Avenue(2)	July 2022	4.45	%	300,000		300,000
21 East 66th Street	April 2023	3.60	%	12,000		12,000
717 Fifth Avenue(2)	July 2024	9.00	%	317,126		314,381
3 Columbus Circle(3)	March 2025	2.83	%	350,000		—
Stonehenge Portfolio(4)	Various	4.18	%	435,416		—
Total fixed rate debt				$	2,851,423	$	2,065,264
Floating Rate Debt:
The Meadows	September 2015	7.75	%	67,350		67,350
1552 Broadway(5)	April 2016	4.29	%	188,409		184,210
Other loan payable	June 2016	1.08	%	30,000		30,000
650 Fifth Avenue(6)	October 2016	3.68	%	65,000		65,000
175-225 Third Street	December 2016	4.25	%	40,000		40,000
10 East 53rd Street	February 2017	2.68	%	125,000		125,000
724 Fifth Avenue	April 2017	2.60	%	275,000		275,000
33 Beekman(7)	August 2017	2.93	%	59,370		52,283
600 Lexington Avenue	October 2017	2.26	%	115,758		116,740
55 West 46th Street(8)	October 2017	2.48	%	150,000		150,000
Stonehenge Portfolio	December 2017	3.25	%	10,500		—
121 Greene Street	November 2019	1.68	%	15,000		15,000
100 Park Avenue	February 2021	1.93	%	360,000		360,000
21 East 66th Street	June 2033	2.88	%	1,864		1,883
3 Columbus Circle(3)				—		230,974
Total floating rate debt				$	1,503,251	$	1,713,440
Total joint venture mortgages and other loans payable				$	4,354,674	$	3,778,704

____________________________________________________________________

(1) Effective weighted average interest rate for the three months endedMarch 31, 2015, taking into account interest rate hedges in effect during the period.

(2) These loans are comprised of a $300.0 million fixed rate mortgage loan and $290.0 million mezzanine loan. The mezzanine loan is subject to accretion based on the difference between contractual interest rate and contractual pay rate.

(3) In March 2015, the joint venture refinanced the previous mortgage and incurred a net loss on early extinguishment of debt of $0.8 million.

(4) Amount is comprised of $13.5 million, $56.3 million, $35.0 million, $7.4 million, $143.3 million, and $179.9 million in fixed-rate mortgages that mature in July 2016, June 2017, November 2017, February 2018, August 2019, and June 2024, respectively.

(5) These loans are comprised of a $150.0 million mortgage loan and a $41.5 million mezzanine loan. As of March 31, 2015, $1.7 million of the mortgage loan and $1.4 million of the mezzanine loan was unfunded.

(6) This loan has a committed amount of $97.0 million, of which $32.0 million was unfunded as of March 31, 2015.

(7) This loan has a committed amount of $75.0 million, of which $18.4 million is recourse to us. Our partner has indemnified us for its pro rata share of the recourse guarantee. A portion of the guarantee terminates upon the joint venture reaching certain milestones. We believe it is unlikely that we will be required to perform under this guarantee.

(8) This loan has a committed amount of $190.0 million, of which $40.0 million was unfunded as of March 31, 2015.

Schedule of combined balance sheets for the unconsolidated joint ventures

The combined balance sheets for the unconsolidated joint ventures, at March 31, 2015 and December 31, 2014, are as follows (in thousands):

	March 31, 2015		December 31, 2014
Assets
Commercial real estate property, net	$	6,104,572	$	5,275,632
Other assets	919,848		810,567
Total assets	$	7,024,420	$	6,086,199
Liabilities and members' equity
Mortgages and other loans payable	$	4,354,674	$	3,778,704
Other liabilities	506,768		485,572
Members' equity	2,162,978		1,821,923
Total liabilities and members' equity	$	7,024,420	$	6,086,199
Company's investments in unconsolidated joint ventures	$	1,244,185	$	1,172,020

Schedule of combined statements of income for the unconsolidated joint ventures

The combined statements of income for the unconsolidated joint ventures, from acquisition date through the three months ended March 31, 2015 and 2014 are as follows (in thousands):

	Three Months Ended March 31,
	2015			2014
Total revenues	$	128,916		$	161,138
Operating expenses	25,486			26,683
Ground rent	2,592			2,025
Real estate taxes	19,376			16,936
Interest expense, net of interest income	44,007			52,336
Amortization of deferred financing costs	3,010			4,633
Transaction related costs	8			271
Depreciation and amortization	32,984			45,604
Total expenses	127,463			148,488
Loss on early extinguishment of debt	(833		)	(3,197		)
Net income (loss) before gain on sale	$	620		$	9,453
Company's equity in net income from unconsolidated joint ventures	$	4,030		$	6,128

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Corporate Indebtedness

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Corporate Indebtedness

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 March 31, 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 March 31, 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 March 31, 2015, the applicable spread was 125 basis points for revolving credit facility and 140 basis points for the term loan facility. At March 31, 2015, the effective interest rate was 1.43% for the revolving credit facility and 1.65% 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 March 31, 2015, the facility fee was 25 basis points. As of March 31, 2015, we had $107.6 million of outstanding letters of credit, $520.0 million drawn under the revolving credit facility and $833.0 million outstanding under the term loan facility, with total undrawn capacity of $572.4 million under the 2012 credit facility.

The Company, the Operating Partnership and ROP are all borrowers jointly and severally obligated under the 2012 credit facility. None of our 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 March 31, 2015 and December 31, 2014, respectively, by scheduled maturity date (dollars in thousands):

Issuance	March 31, 2015 Unpaid Principal Balance		March 31, 2015 Accreted Balance		December 31, 2014 Accreted Balance		Coupon Rate(1)		Effective Rate		Term (in Years)	Maturity Date
March 31, 2006(2)	$	255,308	$	255,261	$	255,250	6.00	%	6.00	%	10	March 31, 2016
October 12, 2010(3)	345,000		312,005		309,069		3.00	%	3.00	%	7	October 15, 2017
August 5, 2011(4)	250,000		249,760		249,744		5.00	%	5.00	%	7	August 15, 2018
March 16, 2010(4)	250,000		250,000		250,000		7.75	%	7.75	%	10	March 15, 2020
November 15, 2012(4)	200,000		200,000		200,000		4.50	%	4.50	%	10	December 1, 2022
June 27, 2005(2)(5)	7		7		7		4.00	%	4.00	%	20	June 15, 2025
March 26, 2007(6)	10,008		10,008		10,008		3.00	%	3.00	%	20	March 30, 2027
	$	1,310,323	$	1,277,041	$	1,274,078

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(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 ROP.

(3) Issued by the Operating Partnership. Interest on these exchangeable notes is payable semi-annually on April 15 and October 15. The notes had an initial exchange rate representing an exchange price that was set at a 30.0% premium to the last reported sale price of SL Green's common stock on October 6, 2010, or $85.81. The initial exchange rate is subject to adjustment under certain circumstances. The current exchange rate is 12.1632 shares of SL Green's common stock per $1,000 principal amount of these notes. The notes are senior unsecured obligations of the Operating Partnership and are exchangeable upon the occurrence of specified events and during the period beginning on the twenty-second scheduled trading day prior to the maturity date and ending on the second business day prior to the maturity date, into cash or a combination of cash and shares of SL Green's common stock, if any, at our option. As a result of meeting specified events (as defined in the Indenture Agreement), these notes became exchangeable commencing January 1, 2015 and will remain exchangeable through June 30, 2015. The notes are guaranteed by ROP. On the issuance date, $78.3 million of the debt balance was recorded in equity. As of March 31, 2015, $32.9 million remained to be amortized into the debt balance.

(4) Issued by the Company, the Operating Partnership and ROP, as co-obligors.

(5) Exchangeable senior debentures which are currently callable at par. In addition, the debentures can be put to ROP, at the option of the holder at par plus accrued and unpaid interest, on June 15, 2015 and 2020 and upon the occurrence of certain change of control transactions. As a result of the acquisition of all outstanding shares of common stock of Reckson, or the Reckson Merger, the adjusted exchange rate for the debentures is 7.7461 shares of SL Green's common stock per $1,000 of principal amount of debentures and the adjusted reference dividend for the debentures is $1.3491. In April 2015, we redeemed the remaining outstanding debentures.

(6) Issued by the Operating Partnership. Interest on these remaining exchangeable notes is payable semi-annually on March 30 and September 30. The notes have an initial exchange rate representing an exchange price that was set at a 25.0% premium to the last reported sale price of the Company's common stock on March 20, 2007, or $173.30. The initial exchange rate is subject to adjustment under certain circumstances. The current exchange rate is 5.7952 shares of SL Green's common stock per $1,000 principal amount of these notes. The notes are senior unsecured obligations of the Operating Partnership and are exchangeable upon the occurrence of specified events and during the period beginning on the twenty-second scheduled trading day prior to the maturity date and ending on the second business day prior to the maturity date, into cash or a combination of cash and shares of SL Green's common stock, if any, at our option. The notes are currently redeemable at the Operating Partnership’s option. The Operating Partnership may be required to repurchase the notes on March 30, 2017 and 2022, and upon the occurrence of certain designated events.

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, our 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 minimum amount of tangible net worth, a 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, we will not during any time when a default is continuing, make distributions with respect to common stock or other equity interests, except to enable the Company to continue to qualify as a REIT for Federal income tax purposes. As of March 31, 2015 and December 31, 2014, we were in compliance with all such covenants.

Junior Subordinated Deferrable Interest Debentures

In June 2005, the Company and the Operating Partnership issued $100.0 million in unsecured trust preferred securities through a newly formed trust, SL Green Capital Trust I, or the Trust, which is a wholly-owned subsidiary of the Operating Partnership. The securities mature in 2035 and bear interest at a fixed rate of 5.61% for the first ten years ending July 2015. Thereafter, the interest rate will float at 125 basis points over the three-month LIBOR. Interest payments may be deferred for a period of up to eight consecutive quarters if the Operating Partnership exercises its right to defer such payments. The Trust preferred securities are redeemable at the option of the Operating Partnership, in whole or in part, with no prepayment premium. We do not consolidate the Trust even though it is a variable interest entity as we are not the primary beneficiary. Because the Trust is not consolidated, we have recorded the debt on our consolidated balance sheets and the related payments are classified as interest expense.

Principal Maturities

Combined aggregate principal maturities of mortgages and other loans payable, 2012 credit facility, trust preferred securities, senior unsecured notes and our share of joint venture debt as of March 31, 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		Trust Preferred Securities		Senior Unsecured Notes			Total		Joint Venture Debt
Remaining 2015	$	22,882	$	—	$	—	$	—	$	—	$	7	(1)	$	22,889	$	39,407
2016	47,360		100,311		—		—		—		255,308			402,979		534,026
2017	61,063		895,329		—		—		—		355,008			1,311,400		582,755
2018	64,462		16,000		—		—		—		250,000			330,462		2,196
2019	70,409		28,317		—		833,000		—		—			931,726		104,688
Thereafter	200,403		3,852,505		520,000		—		100,000		450,000			5,122,908		446,744
	$	466,579	$	4,892,462	$	520,000	$	833,000	$	100,000	$	1,310,323		$	8,122,364	$	1,709,816

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(1) In April 2015, we redeemed the remaining outstanding 4.00% Exchangeable Senior Debentures due 2025.

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

	Three Months Ended March 31,
	2015			2014
Interest expense	$	76,459		$	76,708
Interest income	(652		)	(530		)
Interest expense, net	$	75,807		$	76,178
Interest capitalized	$	8,558		$	4,271