SL Green Realty (SLG) 10-Q 4 Nov 22 2022 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2022	Nov. 03, 2022
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	1-13199
Entity Registrant Name	SL GREEN REALTY CORP
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	13-3956775
Entity Address, Address Line One	One Vanderbilt Avenue
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10017
City Area Code	212
Local Phone Number	594-2700
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		64,316,051
Entity Central Index Key	0001040971
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock
Document Information [Line Items]
Trading Symbol	SLG
Title of 12(b) Security	Common Stock, $0.01 par value
Security Exchange Name	NYSE
Series I Preferred Stock
Document Information [Line Items]
Trading Symbol	SLG.PRI
Title of 12(b) Security	6.500% Series I Cumulative Redeemable Preferred Stock, $0.01 par value
Security Exchange Name	NYSE
SL Green Operating Partnership
Document Information [Line Items]
Entity File Number	33-167793-02
Entity Registrant Name	SL GREEN OPERATING PARTNERSHIP, L.P.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	13-3960938
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		306,987
Entity Central Index Key	0001492869
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Commercial real estate properties, at cost:
Land and land interests		$ 1,715,371	$ 1,350,701
Building and improvements		5,028,486	3,671,402
Building leasehold and improvements		1,676,811	1,645,081
Right of use asset - operating leases		1,041,661	983,723
Total commercial real estate properties, at cost		9,462,329	7,650,907
Less: accumulated depreciation		(2,005,922)	(1,896,199)
Total commercial real estate properties, net		7,456,407	5,754,708
Assets held for sale		0	140,855
Cash and cash equivalents		201,267	251,417
Restricted cash		183,811	85,567
Investments in marketable securities		16,535	34,752
Tenant and other receivables		41,334	47,616
Related party receivables		27,287	29,408
Deferred rents receivable		252,555	248,313
Debt and preferred equity investments, net of discounts and deferred origination fees of $1,994 and $5,057 and allowances of $6,630 and $6,630 in 2022 and 2021, respectively		663,985	1,088,723
Investments in unconsolidated joint ventures		3,185,800	2,997,934
Deferred costs, net		115,952	124,495
Other assets		571,117	262,841
Total assets	[1]	12,716,050	11,066,629
Liabilities
Mortgages and other loans payable, net		3,229,016	1,394,386
Revolving credit facility, net		442,816	381,334
Unsecured term loans, net		1,242,994	1,242,002
Unsecured notes, net		599,662	899,308
Accrued interest payable		18,705	12,698
Other liabilities		312,564	195,390
Accounts payable and accrued expenses		175,203	157,571
Deferred revenue		280,251	107,275
Lease liability - financing leases		103,888	102,914
Lease liability - operating leases		911,756	851,370
Dividend and distributions payable		24,362	187,372
Security deposits		50,926	52,309
Liabilities related to assets held for sale		0	64,120
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities		100,000	100,000
Total liabilities	[1]	7,492,143	5,748,049
Commitments and contingencies
Noncontrolling interests in Operating Partnership		293,743	344,252
Preferred units		177,943	196,075
Equity
Series I Preferred Stock, $0.01 par value, $25.00 liquidation preference, 9,200 issued and outstanding at both September 30, 2022 and December 31, 2021		221,932	221,932
Common stock, $0.01 par value, 160,000 shares authorized and 65,376 and 65,132 issued and outstanding at September 30, 2022 and December 31, 2021, respectively (including 1,060 and 1,027 shares held in treasury at September 30, 2022 and December 31, 2021, respectively)		655	672
Additional paid-in-capital		3,780,286	3,739,409
Treasury stock at cost		(128,655)	(126,160)
Accumulated other comprehensive income (loss)		57,574	(46,758)
Retained earnings		755,862	975,781
Total SL Green stockholders' equity		4,687,654	4,764,876
Noncontrolling interests in other partnerships		64,567	13,377
Total equity		4,752,221	4,778,253
Total liabilities and equity/capital		$ 12,716,050	$ 11,066,629
[1] (1) The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $179.6 million and $193.4 million of land, $321.0 million and $336.9 million of building and improvements, $— million and $— million of building and leasehold improvements, $15.4 million and $15.4 million of right of use assets, $13.5 million and $11.7 million of accumulated depreciation, $615.0 million and $574.4 million of other assets included in other line items, $326.4 million and $418.9 million of real estate debt, net, $0.1 million and $0.8 million of accrued interest payable, $15.3 million and $15.3 million of lease liabilities, and $152.0 million and $145.2 million of other liabilities included in other line items as of September 30, 2022 and December 31, 2021, respectively.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt and preferred equity investments, discount and deferred origination fees	$ 1,994	$ 5,057
Allowance for loan and lease losses, real estate	$ 6,630	$ 6,630
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 (in shares)	160,000,000	160,000,000
Common stock, shares outstanding (in shares)	65,376,000	65,132,000
Common stock, shares issued (in shares)	65,376,000	65,132,000
Treasury stock, shares (in shares)	1,060,000	1,027,000
Land and land interests	$ 1,715,371	$ 1,350,701
Building and improvements	5,028,486	3,671,402
Building leasehold and improvements	1,676,811	1,645,081
Right of use asset - operating leases	1,041,661	983,723
Accumulated depreciation	2,005,922	1,896,199
Other assets	571,117	262,841
Mortgages and other loans payable, net	3,229,016	1,394,386
Lease liability - financing leases	103,888	102,914
Other liabilities	312,564	195,390
Service Corporation
Land and land interests	179,600	193,400
Building and improvements	321,000	336,900
Building leasehold and improvements	0	0
Right of use asset - operating leases	15,400	15,400
Accumulated depreciation	13,500	11,700
Other assets	615,000	574,400
Mortgages and other loans payable, net	326,400	418,900
Accrued interest payable	100	800
Lease liability - financing leases	15,300	15,300
Other liabilities	$ 152,000	$ 145,200
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	$ 25
Preferred stock, shares outstanding (in shares)	9,200,000	9,200,000
Preferred stock, shares issued (in shares)	9,200,000	9,200,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues
Rental revenue, net	$ 162,952	$ 155,363	$ 474,215	$ 528,063
Investment income	29,513	20,072	69,808	59,452
Other income	19,991	29,766	57,842	61,895
Total revenues	212,456	205,201	601,865	649,410
Expenses
Operating expenses, including related party expenses of $— and $5,695 in 2022, and $3,563 and $8,827 in 2021	45,011	40,684	127,151	126,851
Real estate taxes	35,111	32,139	96,677	121,318
Operating lease rent	7,388	6,557	20,429	20,003
Interest expense, net of interest income	21,824	14,807	51,854	57,155
Amortization of deferred financing costs	2,043	2,345	5,908	9,505
Depreciation and amortization	48,462	49,277	142,359	169,534
Transaction related costs	292	190	321	215
Marketing, general and administrative	21,276	23,477	69,574	68,426
Total expenses	181,407	169,476	514,273	573,007
Equity in net loss from unconsolidated joint ventures	(21,997)	(15,487)	(31,262)	(31,321)
Equity in net loss on sale of interest in unconsolidated joint venture/real estate	0	(1,280)	(131)	(5,438)
Purchase price and other fair value adjustments	(1,117)	208,810	(7,348)	209,527
Gain (loss) on sale of real estate, net	4,276	187,766	(61,104)	285,338
Depreciable real estate reserves and impairment	0	0	0	(5,696)
Net income (loss)	12,211	415,534	(12,253)	528,813
Net loss (income) attributable to noncontrolling interests:
Noncontrolling interests in the Operating Partnership	(491)	(22,683)	1,831	(28,489)
Noncontrolling interests in other partnerships	993	915	(2,269)	2,454
Preferred units distributions	(1,598)	(1,823)	(4,844)	(5,492)
Net income (loss) attributable to SL Green	11,115	391,943	(17,535)	497,286
Perpetual preferred stock dividends	(3,738)	(3,738)	(11,213)	(11,213)
Net income (loss) attributable to SL Green common stockholders	$ 7,377	$ 388,205	$ (28,748)	$ 486,073
Basic earnings per share (in dollars per share)	$ 0.11	$ 5.95	$ (0.47)	$ 7.29
Diluted earnings per share (in dollars per share)	$ 0.11	$ 5.91	$ (0.47)	$ 7.24
Basic weighted average common shares outstanding (in shares)	63,949	64,856	63,971	66,248
Diluted weighted average common shares and common share equivalents outstanding (in shares)	68,897	69,496	69,249	71,049

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Related party expenses	$ 0	$ 3,563	$ 5,695	$ 8,827

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ 12,211	$ 415,534	$ (12,253)	$ 528,813
Other comprehensive income:
Increase in unrealized value of derivative instruments, including SL Green's share of joint venture derivative instruments	50,488	6,615	111,378	6,565
Increase (decrease) in unrealized value of marketable securities	1,605	66	(642)	314
Other comprehensive income	52,093	6,681	110,736	6,879
Comprehensive income	64,304	422,215	98,483	535,692
Net income attributable to noncontrolling interests and preferred units distributions	(1,096)	(23,591)	(5,282)	(31,527)
Other comprehensive income attributable to noncontrolling interests	(3,114)	(415)	(6,404)	(229)
Comprehensive income attributable to SL Green	$ 60,094	$ 398,209	$ 86,797	$ 503,936

Consolidated Statement of Equit

Consolidated Statement of Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid- In-Capital	Treasury Stock	Accumulated Other Comprehensive Income	Retained Earnings	Noncontrolling Interests	Series I Preferred Stock Series I Preferred Stock
Beginning Balance at Dec. 31, 2020	$ 4,935,795	$ 716	$ 3,862,949	$ (124,049)	$ (67,247)	$ 1,015,462	$ 26,032	$ 221,932
Beginning Balance (in shares) at Dec. 31, 2020		66,474
Increase (Decrease) in Stockholders' Equity
Net income (loss)	494,832					497,286	(2,454)
Other comprehensive income	6,650				6,650
Preferred dividends	(11,213)					(11,213)
DRSPP proceeds (in shares)		9
DRSPP proceeds	613		613
Reallocation of noncontrolling interest in the Operating Partnership	(17,245)					(17,245)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		108
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	22,251	$ 2	22,249
Repurchases of common stock (in shares)		(3,684)
Repurchases of common stock	(276,844)	$ (38)	(235,221)			(41,585)
Contribution to consolidated joint venture interests	310						310
Sale of interest in partially owned entity	(4,476)						(4,476)
Cash distributions to noncontrolling interests	(5,403)						(5,403)
Issuance of special dividend paid primarily in stock (in shares)		1,974
Issuance of special dividend paid primarily in stock	123,529		123,529	(2,111)		2,111
Cash distributions declared	(186,584)					(186,584)
Ending Balance at Sep. 30, 2021	5,082,215	$ 680	3,774,119	(126,160)	(60,597)	1,258,232	14,009	221,932
Ending Balance (in shares) at Sep. 30, 2021		64,881
Beginning Balance at Dec. 31, 2020	4,935,795	$ 716	3,862,949	(124,049)	(67,247)	1,015,462	26,032	221,932
Beginning Balance (in shares) at Dec. 31, 2020		66,474
Ending Balance at Dec. 31, 2021	4,778,253	$ 672	3,739,409	(126,160)	(46,758)	975,781	13,377	221,932
Ending Balance (in shares) at Dec. 31, 2021		64,105
Beginning Balance at Jun. 30, 2021	4,813,757	$ 690	3,823,290	(124,049)	(66,863)	934,132	24,625	221,932
Beginning Balance (in shares) at Jun. 30, 2021		65,866
Increase (Decrease) in Stockholders' Equity
Net income (loss)	391,028					391,943	(915)
Other comprehensive income	6,266				6,266
Preferred dividends	(3,738)					(3,738)
DRSPP proceeds (in shares)		2
DRSPP proceeds	146		146
Reallocation of noncontrolling interest in the Operating Partnership	15,230					15,230
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		(1)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	7,932		7,932
Repurchases of common stock (in shares)		(986)
Repurchases of common stock	(77,957)	$ (10)	(57,249)			(20,698)
Contribution to consolidated joint venture interests	5						5
Sale of interest in partially owned entity	(4,476)						(4,476)
Cash distributions to noncontrolling interests	(5,230)						(5,230)
Issuance of special dividend paid primarily in stock	0			(2,111)		2,111
Cash distributions declared	(60,748)					(60,748)
Ending Balance at Sep. 30, 2021	5,082,215	$ 680	3,774,119	(126,160)	(60,597)	1,258,232	14,009	221,932
Ending Balance (in shares) at Sep. 30, 2021		64,881
Beginning Balance at Dec. 31, 2021	4,778,253	$ 672	3,739,409	(126,160)	(46,758)	975,781	13,377	221,932
Beginning Balance (in shares) at Dec. 31, 2021		64,105
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(15,266)					(17,535)	2,269
Redemption and conversion of common units	(29,817)		(29,742)				(75)
Other comprehensive income	104,332				104,332
Preferred dividends	(11,213)					(11,213)
DRSPP proceeds (in shares)		6
DRSPP proceeds	339		339
Reallocation of noncontrolling interest in the Operating Partnership	23,539					23,539
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		215
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	22,147	$ 3	22,144
Repurchases of common stock (in shares)		(1,971)
Repurchases of common stock	(151,197)	$ (20)	(114,979)			(36,198)
Contribution to consolidated joint venture interests	52,164						52,164
Cash distributions to noncontrolling interests	(3,168)						(3,168)
Issuance of special dividend paid primarily in stock (in shares)		1,961
Issuance of special dividend paid primarily in stock	160,620		163,115	(2,495)
Cash distributions declared	(178,512)					(178,512)
Ending Balance at Sep. 30, 2022	4,752,221	$ 655	3,780,286	(128,655)	57,574	755,862	64,567	221,932
Ending Balance (in shares) at Sep. 30, 2022		64,316
Beginning Balance at Jun. 30, 2022	4,748,764	$ 655	3,801,272	(128,655)	8,595	779,999	64,966	221,932
Beginning Balance (in shares) at Jun. 30, 2022		64,302
Increase (Decrease) in Stockholders' Equity
Net income (loss)	10,122					11,115	(993)
Redemption and conversion of common units	(29,817)		(29,742)				(75)
Other comprehensive income	48,979				48,979
Preferred dividends	(3,738)					(3,738)
DRSPP proceeds (in shares)		3
DRSPP proceeds	140		140
Reallocation of noncontrolling interest in the Operating Partnership	28,624					28,624
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)		11
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	8,616		8,616
Contribution to consolidated joint venture interests	817						817
Cash distributions to noncontrolling interests	(148)						(148)
Cash distributions declared	(60,138)					(60,138)
Ending Balance at Sep. 30, 2022	$ 4,752,221	$ 655	$ 3,780,286	$ (128,655)	$ 57,574	$ 755,862	$ 64,567	$ 221,932
Ending Balance (in shares) at Sep. 30, 2022		64,316

Consolidated Statement of Equ_2

Consolidated Statement of Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Stockholders' Equity [Abstract]
Cash distribution declared, per common share (in dollars per share)	$ 0.932	$ 0.938	$ 2.797	$ 2.813

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities
Net (loss) income	$ (12,253)	$ 528,813
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	148,267	179,039
Equity in net loss from unconsolidated joint ventures	31,262	31,321
Distributions of cumulative earnings from unconsolidated joint ventures	448	719
Equity in net loss on sale of interest in unconsolidated joint venture interest/real estate	131	5,438
Purchase price and other fair value adjustments	7,348	(209,527)
Depreciable real estate reserves and impairment	0	5,696
Loss (gain) on sale of real estate, net	61,104	(285,338)
Deferred rents receivable	(1,371)	(6,963)
Non-cash lease expense	17,332	11,670
Other non-cash adjustments	(11,950)	27,868
Changes in operating assets and liabilities:
Tenant and other receivables	7,800	(11,827)
Related party receivables	5,803	(4,626)
Deferred lease costs	(10,227)	(1,267)
Other assets	(35,114)	(118)
Accounts payable, accrued expenses, other liabilities and security deposits	21,345	(54,009)
Deferred revenue	17,208	7,412
Lease liability - operating leases	2,495	(33,289)
Net cash provided by operating activities	249,628	191,012
Investing Activities
Acquisitions of real estate property	(64,491)	(152,791)
Additions to land, buildings and improvements	(194,997)	(208,380)
Acquisition deposits and deferred purchase price	75,400	0
Investments in unconsolidated joint ventures	(146,598)	(76,471)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	92,217	749,997
Net proceeds from disposition of real estate/joint venture interest	353,853	541,268
Cash and restricted cash assumed from acquisition of real estate investment	60,494	0
Cash assumed from consolidation of real estate investment	0	9,475
Proceeds from sale or redemption of marketable securities	11,465	4,528
Purchases of marketable securities	0	(10,000)
Other investments	1,619	2,401
Origination of debt and preferred equity investments	(40,053)	(83,924)
Repayments or redemption of debt and preferred equity investments	124,405	110,774
Net cash provided by investing activities	273,314	886,877
Financing Activities
Proceeds from mortgages and other loans payable	381,980	31,219
Repayments of mortgages and other loans payable	(290,936)	(372,300)
Proceeds from revolving credit facility and unsecured notes	1,124,000	925,000
Repayments of revolving credit facility and unsecured notes	(1,364,000)	(1,165,000)
Proceeds from stock options exercised and DRSPP issuance	339	613
Repurchase of common stock	(151,197)	(280,623)
Redemption of preferred stock	(17,967)	(3,631)
Redemption of OP units	(35,316)	(13,930)
Distributions to noncontrolling interests in other partnerships	(3,168)	(5,403)
Contributions from noncontrolling interests in other partnerships	52,164	310
Acquisition of subsidiary interest from noncontrolling interest	(29,817)	0
Distributions to noncontrolling interests in the Operating Partnership	(12,635)	(11,882)
Dividends paid on common and preferred stock	(197,124)	(205,131)
Other obligations related to secured borrowing	77,874	0
Tax withholdings related to restricted share awards	(3,915)	(2,989)
Deferred loan costs	(5,130)	(570)
Principal payments of on financing lease liabilities	0	(434)
Net cash used in financing activities	(474,848)	(1,104,751)
Net increase (decrease) in cash, cash equivalents, and restricted cash	48,094	(26,862)
Cash, cash equivalents, and restricted cash at beginning of year	336,984	372,795
Cash, cash equivalents, and restricted cash at end of period	385,078	345,933
Supplemental Disclosure of Non-Cash Investing and Financing Activities:
Redemption of units in the Operating Partnership for a joint venture sale	0	27,586
Exchange of preferred equity investment for real estate or equity in joint venture	190,652	0
Exchange of debt investment for real estate or equity in joint venture	193,995	9,468
Assumption of mortgage and mezzanine loans	1,712,750	60,000
Issuance of special dividend paid primarily in stock	160,620	121,418
Tenant improvements and capital expenditures payable	18,518	16,684
Fair value adjustment to noncontrolling interest in the Operating Partnership	23,539	17,245
Consolidation of real estate investment	0	119,444
Deconsolidation of a subsidiary	0	66,837
Deconsolidation of a subsidiary mortgage	0	510,000
Extinguishment of debt in connection with property dispositions	0	53,548
Debt and preferred equity investments	302	8,372
Removal of fully depreciated commercial real estate properties	4,048	7,030
Distributions to noncontrolling interests	0	358
Share repurchase payable	0	3,779
Sale of interest in partially owned entity	0	4,476
Recognition of right of use assets and related lease liabilities	57,938	115,812
Cash and cash equivalents	201,267	257,941
Restricted cash	183,811	87,992
Total cash, cash equivalents, and restricted cash	$ 385,078	$ 345,933

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Partnership) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Commercial real estate properties, at cost:
Land and land interests		$ 1,715,371	$ 1,350,701
Building and improvements		5,028,486	3,671,402
Building leasehold and improvements		1,676,811	1,645,081
Right of use asset - operating leases		1,041,661	983,723
Total commercial real estate properties, at cost		9,462,329	7,650,907
Less: accumulated depreciation		(2,005,922)	(1,896,199)
Total commercial real estate properties, net		7,456,407	5,754,708
Assets held for sale		0	140,855
Cash and cash equivalents		201,267	251,417
Restricted cash		183,811	85,567
Investments in marketable securities		16,535	34,752
Tenant and other receivables		41,334	47,616
Related party receivables		27,287	29,408
Deferred rents receivable		252,555	248,313
Debt and preferred equity investments, net of discounts and deferred origination fees of $1,994 and $5,057 and allowances of $6,630 and $6,630 in 2022 and 2021, respectively		663,985	1,088,723
Investments in unconsolidated joint ventures		3,185,800	2,997,934
Deferred costs, net		115,952	124,495
Other assets		571,117	262,841
Total assets	[1]	12,716,050	11,066,629
Liabilities
Mortgages and other loans payable, net		3,229,016	1,394,386
Revolving credit facility, net		442,816	381,334
Unsecured term loans, net		1,242,994	1,242,002
Unsecured notes, net		599,662	899,308
Accrued interest payable		18,705	12,698
Other liabilities		312,564	195,390
Accounts payable and accrued expenses		175,203	157,571
Deferred revenue		280,251	107,275
Lease liability - financing leases		103,888	102,914
Lease liability - operating leases		911,756	851,370
Dividend and distributions payable		24,362	187,372
Security deposits		50,926	52,309
Liabilities related to assets held for sale		0	64,120
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities		100,000	100,000
Total liabilities	[1]	7,492,143	5,748,049
Commitments and contingencies
Preferred units		177,943	196,075
SLGOP partners' capital:
Accumulated other comprehensive income (loss)		57,574	(46,758)
Total liabilities and equity/capital		12,716,050	11,066,629
SL Green Operating Partnership
Commercial real estate properties, at cost:
Land and land interests		1,715,371	1,350,701
Building and improvements		5,028,486	3,671,402
Building leasehold and improvements		1,676,811	1,645,081
Right of use asset - operating leases		1,041,661	983,723
Total commercial real estate properties, at cost		9,462,329	7,650,907
Less: accumulated depreciation		(2,005,922)	(1,896,199)
Total commercial real estate properties, net		7,456,407	5,754,708
Assets held for sale		0	140,855
Cash and cash equivalents		201,267	251,417
Restricted cash		183,811	85,567
Investments in marketable securities		16,535	34,752
Tenant and other receivables		41,334	47,616
Related party receivables		27,287	29,408
Deferred rents receivable		252,555	248,313
Debt and preferred equity investments, net of discounts and deferred origination fees of $1,994 and $5,057 and allowances of $6,630 and $6,630 in 2022 and 2021, respectively		663,985	1,088,723
Investments in unconsolidated joint ventures		3,185,800	2,997,934
Deferred costs, net		115,952	124,495
Other assets		571,117	262,841
Total assets	[2]	12,716,050	11,066,629
Liabilities
Mortgages and other loans payable, net		3,229,016	1,394,386
Revolving credit facility, net		442,816	381,334
Unsecured term loans, net		1,242,994	1,242,002
Unsecured notes, net		599,662	899,308
Accrued interest payable		18,705	12,698
Other liabilities		312,564	195,390
Accounts payable and accrued expenses		175,203	157,571
Deferred revenue		280,251	107,275
Lease liability - financing leases		103,888	102,914
Lease liability - operating leases		911,756	851,370
Dividend and distributions payable		24,362	187,372
Security deposits		50,926	52,309
Liabilities related to assets held for sale		0	64,120
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities		100,000	100,000
Total liabilities	[2]	7,492,143	5,748,049
Commitments and contingencies
Limited partner interests in SLGOP (3,759 and 3,782 limited partner common units outstanding at September 30, 2022 and December 31, 2021, respectively)		293,743	344,252
Preferred units		177,943	196,075
SLGOP partners' capital:
Series I Preferred Units, $25.00 liquidation preference, 9,200 issued and outstanding at both September 30, 2022 and December 31, 2021		221,932	221,932
SL Green partners' capital (681 and 677 general partner common units and 63,635 and 63,428 limited partner common units outstanding at September 30, 2022 and December 31, 2021, respectively)		4,408,148	4,589,702
Accumulated other comprehensive income (loss)		57,574	(46,758)
Total SLGOP partners' capital		4,687,654	4,764,876
Noncontrolling interests in other partnerships		64,567	13,377
Total capital		4,752,221	4,778,253
Total liabilities and equity/capital		$ 12,716,050	$ 11,066,629
[1] (1) The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $179.6 million and $193.4 million of land, $321.0 million and $336.9 million of building and improvements, $— million and $— million of building and leasehold improvements, $15.4 million and $15.4 million of right of use assets, $13.5 million and $11.7 million of accumulated depreciation, $615.0 million and $574.4 million of other assets included in other line items, $326.4 million and $418.9 million of real estate debt, net, $0.1 million and $0.8 million of accrued interest payable, $15.3 million and $15.3 million of lease liabilities, and $152.0 million and $145.2 million of other liabilities included in other line items as of September 30, 2022 and December 31, 2021, respectively. (1) The Operating Partnership's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $179.6 million and $193.4 million of land, $321.0 million and $336.9 million of building and improvements, $— million and $— million of building and leasehold improvements, $15.4 million and $15.4 million of right of use assets, $13.5 million and $11.7 million of accumulated depreciation, $615.0 million and $574.4 million of other assets included in other line items, $326.4 million and $418.9 million of real estate debt, net, $0.1 million and $0.8 million of accrued interest payable, $15.3 million and $15.3 million of lease liabilities, and $152.0 million and $145.2 million of other liabilities included in other line items as of September 30, 2022 and December 31, 2021, respectively.

Consolidated Balance Sheets (_3

Consolidated Balance Sheets (Partnership) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt and preferred equity investments, discount and deferred origination fees	$ 1,994	$ 5,057
Allowance for loan and lease losses, real estate	6,630	6,630
Land and land interests	1,715,371	1,350,701
Building and improvements	5,028,486	3,671,402
Building leasehold and improvements	1,676,811	1,645,081
Right of use asset - operating leases	1,041,661	983,723
Accumulated depreciation	2,005,922	1,896,199
Other assets	571,117	262,841
Mortgages and other loans payable, net	3,229,016	1,394,386
Lease liability - financing leases	103,888	102,914
Other liabilities	312,564	195,390
SL Green Operating Partnership
Debt and preferred equity investments, discount and deferred origination fees	1,994	5,057
Allowance for loan and lease losses, real estate	$ 6,630	$ 6,630
Limited partner interests in Operating Partnership, limited partner common units outstanding (shares)	3,759	3,782
SL Green partner's capital, general partner common units outstanding (shares)	681	677
SL Green partners' capital, limited partner common units outstanding (shares)	63,635	63,428
Land and land interests	$ 1,715,371	$ 1,350,701
Building and improvements	5,028,486	3,671,402
Building leasehold and improvements	1,676,811	1,645,081
Right of use asset - operating leases	1,041,661	983,723
Accumulated depreciation	2,005,922	1,896,199
Other assets	571,117	262,841
Mortgages and other loans payable, net	3,229,016	1,394,386
Lease liability - financing leases	103,888	102,914
Other liabilities	312,564	195,390
Service Corporation
Land and land interests	179,600	193,400
Building and improvements	321,000	336,900
Building leasehold and improvements	0	0
Right of use asset - operating leases	15,400	15,400
Accumulated depreciation	13,500	11,700
Other assets	615,000	574,400
Mortgages and other loans payable, net	326,400	418,900
Accrued interest payable	100	800
Lease liability - financing leases	15,300	15,300
Other liabilities	$ 152,000	$ 145,200
Series I Preferred Stock | SL Green Operating Partnership
Preferred units, liquidation preference (in dollars per share)	$ 25	$ 25
Preferred units, shares issued (in shares)	9,200	9,200
Preferred units, shares outstanding (in shares)	9,200	9,200

Consolidated Statements of Op_3

Consolidated Statements of Operations (Partnership) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues
Rental revenue, net	$ 162,952	$ 155,363	$ 474,215	$ 528,063
Investment income	29,513	20,072	69,808	59,452
Other income	19,991	29,766	57,842	61,895
Total revenues	212,456	205,201	601,865	649,410
Expenses
Operating expenses, including related party expenses of $— and $5,695 in 2022, and $3,563 and $8,827 in 2021	45,011	40,684	127,151	126,851
Real estate taxes	35,111	32,139	96,677	121,318
Operating lease rent	7,388	6,557	20,429	20,003
Interest expense, net of interest income	21,824	14,807	51,854	57,155
Amortization of deferred financing costs	2,043	2,345	5,908	9,505
Depreciation and amortization	48,462	49,277	142,359	169,534
Transaction related costs	292	190	321	215
Marketing, general and administrative	21,276	23,477	69,574	68,426
Total expenses	181,407	169,476	514,273	573,007
Equity in net loss from unconsolidated joint ventures	(21,997)	(15,487)	(31,262)	(31,321)
Equity in net loss on sale of interest in unconsolidated joint venture/real estate	0	(1,280)	(131)	(5,438)
Purchase price and other fair value adjustments	(1,117)	208,810	(7,348)	209,527
Gain (loss) on sale of real estate, net	4,276	187,766	(61,104)	285,338
Depreciable real estate reserves and impairment	0	0	0	(5,696)
Net income (loss)	12,211	415,534	(12,253)	528,813
Net loss (income) attributable to noncontrolling interests:
Net loss (income) attributable to noncontrolling interests	(1,096)	(23,591)	(5,282)	(31,527)
Preferred units distributions	(1,598)	(1,823)	(4,844)	(5,492)
Net income (loss) attributable to SL Green	11,115	391,943	(17,535)	497,286
Perpetual preferred stock dividends	(3,738)	(3,738)	(11,213)	(11,213)
SL Green Operating Partnership
Revenues
Rental revenue, net	162,952	155,363	474,215	528,063
Investment income	29,513	20,072	69,808	59,452
Other income	19,991	29,766	57,842	61,895
Total revenues	212,456	205,201	601,865	649,410
Expenses
Operating expenses, including related party expenses of $— and $5,695 in 2022, and $3,563 and $8,827 in 2021	45,011	40,684	127,151	126,851
Real estate taxes	35,111	32,139	96,677	121,318
Operating lease rent	7,388	6,557	20,429	20,003
Interest expense, net of interest income	21,824	14,807	51,854	57,155
Amortization of deferred financing costs	2,043	2,345	5,908	9,505
Depreciation and amortization	48,462	49,277	142,359	169,534
Transaction related costs	292	190	321	215
Marketing, general and administrative	21,276	23,477	69,574	68,426
Total expenses	181,407	169,476	514,273	573,007
Equity in net loss from unconsolidated joint ventures	(21,997)	(15,487)	(31,262)	(31,321)
Equity in net loss on sale of interest in unconsolidated joint venture/real estate	0	(1,280)	(131)	(5,438)
Purchase price and other fair value adjustments	(1,117)	208,810	(7,348)	209,527
Gain (loss) on sale of real estate, net	4,276	187,766	(61,104)	285,338
Depreciable real estate reserves and impairment	0	0	0	(5,696)
Net income (loss)	12,211	415,534	(12,253)	528,813
Net loss (income) attributable to noncontrolling interests:
Net loss (income) attributable to noncontrolling interests	993	915	(2,269)	2,454
Preferred units distributions	(1,598)	(1,823)	(4,844)	(5,492)
Net income (loss) attributable to SL Green	11,606	414,626	(19,366)	525,775
Perpetual preferred stock dividends	(3,738)	(3,738)	(11,213)	(11,213)
Net income (loss) attributable to SLGOP common unitholders	$ 7,868	$ 410,888	$ (30,579)	$ 514,562
Basic earnings per unit (in dollars per share)	$ 0.11	$ 5.95	$ (0.47)	$ 7.29
Diluted earnings per unit (in dollars per share)	$ 0.11	$ 5.91	$ (0.47)	$ 7.24
Basic weighted average common units outstanding (in shares)	68,037	68,690	68,075	70,272
Diluted weighted average common units and common unit equivalents outstanding (in shares)	68,897	69,496	69,249	71,049

Consolidated Statements of Op_4

Consolidated Statements of Operations (Partnership) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Related party expenses	$ 0	$ 3,563	$ 5,695	$ 8,827
SL Green Operating Partnership
Related party expenses	$ 0	$ 3,563	$ 5,695	$ 8,827

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Partnership) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net (loss) income	$ 12,211	$ 415,534	$ (12,253)	$ 528,813
Other comprehensive income:
Increase in unrealized value of derivative instruments, including SLGOP's share of joint venture derivative instruments	50,488	6,615	111,378	6,565
Increase (decrease) in unrealized value of marketable securities	1,605	66	(642)	314
Other comprehensive income	52,093	6,681	110,736	6,879
Comprehensive income	64,304	422,215	98,483	535,692
Net loss (income) attributable to noncontrolling interests	(1,096)	(23,591)	(5,282)	(31,527)
Other comprehensive income attributable to noncontrolling interests	(3,114)	(415)	(6,404)	(229)
Comprehensive income attributable to SL Green	60,094	398,209	86,797	503,936
SL Green Operating Partnership
Net (loss) income	12,211	415,534	(12,253)	528,813
Other comprehensive income:
Increase in unrealized value of derivative instruments, including SLGOP's share of joint venture derivative instruments	50,488	6,615	111,378	6,565
Increase (decrease) in unrealized value of marketable securities	1,605	66	(642)	314
Other comprehensive income	52,093	6,681	110,736	6,879
Comprehensive income	64,304	422,215	98,483	535,692
Net loss (income) attributable to noncontrolling interests	993	915	(2,269)	2,454
Other comprehensive income attributable to noncontrolling interests	(3,114)	(415)	(6,404)	(229)
Comprehensive income attributable to SL Green	$ 62,183	$ 422,715	$ 89,810	$ 537,917

Consolidated Statement of Capit

Consolidated Statement of Capital - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Increase (Decrease) in Partner's Capital
Redemption and conversion of common units	$ (29,817)		$ (29,817)
DRSPP proceeds	140	$ 146	339	$ 613
Reallocation of noncontrolling interest in the Operating Partnership	28,624	15,230	23,539	(17,245)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	8,616	7,932	22,147	22,251
Repurchases of common units		(77,957)	(151,197)	(276,844)
Contribution to consolidated joint venture interests	817	5	52,164	310
Sale of interest in partially owned entity		(4,476)		(4,476)
Cash distributions to noncontrolling interests	$ (148)	$ (5,230)	$ (3,168)	$ (5,403)
Common Stock
Increase (Decrease) in Partner's Capital
DRSPP proceeds (in shares)	3	2	6	9
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)	11	(1)	215	108
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings			$ 3	$ 2
Repurchases of common units (in units)		(986)	(1,971)	(3,684)
Repurchases of common units		$ (10)	$ (20)	$ (38)
Noncontrolling Interests
Increase (Decrease) in Partner's Capital
Redemption and conversion of common units	(75)		(75)
Contribution to consolidated joint venture interests	817	5	52,164	310
Sale of interest in partially owned entity		(4,476)		(4,476)
Cash distributions to noncontrolling interests	(148)	(5,230)	(3,168)	(5,403)
SL Green Operating Partnership
Increase (Decrease) in Partner's Capital
Beginning Balance	4,748,764	4,813,757	4,778,253	4,935,795	$ 4,935,795
Net income (loss)	10,122	391,028	(15,266)	494,832
Redemption and conversion of common units	(29,817)		(29,817)
Other comprehensive income	48,979	6,266	104,332	6,650
Preferred distributions	(3,738)	(3,738)	(11,213)	(11,213)
DRSPP proceeds	140	146	339	613
Reallocation of noncontrolling interest in the Operating Partnership	28,624	15,230	23,539	(17,245)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	8,616	7,932	22,147	22,251
Repurchases of common units		(77,957)	(151,197)	(276,844)
Contribution to consolidated joint venture interests	817	5	52,164	310
Sale of interest in partially owned entity		(4,476)		(4,476)
Cash distributions to noncontrolling interests	(148)	(5,230)	(3,168)	(5,403)
Issuance of special distribution paid primarily in units			160,620	123,529
Cash distributions declared	(60,138)	(60,748)	(178,512)	(186,584)
Ending Balance	4,752,221	5,082,215	4,752,221	5,082,215	4,778,253
SL Green Operating Partnership | Series I Preferred Units | Series I Preferred Stock
Increase (Decrease) in Partner's Capital
Beginning Balance	221,932	221,932	221,932	221,932	221,932
Ending Balance	221,932	221,932	221,932	221,932	221,932
SL Green Operating Partnership | Common Stock | Partners' Interest
Increase (Decrease) in Partner's Capital
Beginning Balance	$ 4,453,271	$ 4,634,063	$ 4,589,702	$ 4,755,078	$ 4,755,078
Beginning Balance (units)	64,302	65,866	64,105	66,474	66,474
Net income (loss)	$ 11,115	$ 391,943	$ (17,535)	$ 497,286
Redemption and conversion of common units	(29,742)		(29,742)
Preferred distributions	$ (3,738)	$ (3,738)	$ (11,213)	$ (11,213)
DRSPP proceeds (in shares)	3	2	6	9
DRSPP proceeds	$ 140	$ 146	$ 339	$ 613
Reallocation of noncontrolling interest in the Operating Partnership	$ 28,624	$ 15,230	$ 23,539	$ (17,245)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)	11	(1)	215	108
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	$ 8,616	$ 7,932	$ 22,147	$ 22,251
Repurchases of common units (in units)		(986)	(1,971)	(3,684)
Repurchases of common units		$ (77,957)	$ (151,197)	$ (276,844)
Issuance of special distribution paid primarily in units (in shares)			1,961	1,974
Issuance of special distribution paid primarily in units			$ 160,620	$ 123,529
Cash distributions declared	(60,138)	(60,748)	(178,512)	(186,584)
Ending Balance	$ 4,408,148	$ 4,906,871	$ 4,408,148	$ 4,906,871	$ 4,589,702
Ending Balance (units)	64,316	64,881	64,316	64,881	64,105
SL Green Operating Partnership | Accumulated Other Comprehensive Income
Increase (Decrease) in Partner's Capital
Beginning Balance	$ 8,595	$ (66,863)	$ (46,758)	$ (67,247)	$ (67,247)
Other comprehensive income	48,979	6,266	104,332	6,650
Ending Balance	57,574	(60,597)	57,574	(60,597)	(46,758)
SL Green Operating Partnership | Noncontrolling Interests
Increase (Decrease) in Partner's Capital
Beginning Balance	64,966	24,625	13,377	26,032	26,032
Net income (loss)	(993)	(915)	2,269	(2,454)
Redemption and conversion of common units	(75)		(75)
Contribution to consolidated joint venture interests	817	5	52,164	310
Sale of interest in partially owned entity		(4,476)		(4,476)
Cash distributions to noncontrolling interests	(148)	(5,230)	(3,168)	(5,403)
Ending Balance	$ 64,567	$ 14,009	$ 64,567	$ 14,009	$ 13,377

Consolidated Statement of Cap_2

Consolidated Statement of Capital (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Cash distribution declared, per common share (in dollars per share)	$ 0.932	$ 0.938	$ 2.797	$ 2.813
SL Green Operating Partnership
Cash distribution declared, per common share (in dollars per share)	$ 0.932	$ 0.938	$ 2.797	$ 2.813

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Partnership) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities
Net (loss) income	$ (12,253)	$ 528,813
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	148,267	179,039
Equity in net loss from unconsolidated joint ventures	31,262	31,321
Distributions of cumulative earnings from unconsolidated joint ventures	448	719
Equity in net loss on sale of interest in unconsolidated joint venture interest/real estate	131	5,438
Purchase price and other fair value adjustments	7,348	(209,527)
Depreciable real estate reserves and impairment	0	5,696
Loss (gain) on sale of real estate, net	61,104	(285,338)
Deferred rents receivable	(1,371)	(6,963)
Non-cash lease expense	17,332	11,670
Other non-cash adjustments	(11,950)	27,868
Changes in operating assets and liabilities:
Tenant and other receivables	7,800	(11,827)
Related party receivables	5,803	(4,626)
Deferred lease costs	(10,227)	(1,267)
Other assets	(35,114)	(118)
Accounts payable, accrued expenses, other liabilities and security deposits	21,345	(54,009)
Deferred revenue	17,208	7,412
Lease liability - operating leases	2,495	(33,289)
Net cash provided by operating activities	249,628	191,012
Investing Activities
Acquisitions of real estate property	(64,491)	(152,791)
Additions to land, buildings and improvements	(194,997)	(208,380)
Acquisition deposits and deferred purchase price	75,400	0
Investments in unconsolidated joint ventures	(146,598)	(76,471)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	92,217	749,997
Net proceeds from disposition of real estate/joint venture interest	353,853	541,268
Cash and restricted cash assumed from acquisition of real estate investment	60,494	0
Cash assumed from consolidation of real estate investment	0	9,475
Proceeds from sale or redemption of marketable securities	11,465	4,528
Purchases of marketable securities	0	(10,000)
Other investments	1,619	2,401
Origination of debt and preferred equity investments	(40,053)	(83,924)
Repayments or redemption of debt and preferred equity investments	124,405	110,774
Net cash provided by investing activities	273,314	886,877
Financing Activities
Proceeds from mortgages and other loans payable	381,980	31,219
Repayments of mortgages and other loans payable	(290,936)	(372,300)
Proceeds from revolving credit facility and unsecured notes	1,124,000	925,000
Repayments of revolving credit facility and unsecured notes	(1,364,000)	(1,165,000)
Proceeds from stock options exercised and DRSPP issuance	339	613
Repurchase of common units	(151,197)	(280,623)
Redemption of preferred units	(17,967)	(3,631)
Redemption of OP units	(35,316)	(13,930)
Distributions to noncontrolling interests in other partnerships	(3,168)	(5,403)
Contributions from noncontrolling interests in other partnerships	52,164	310
Acquisition of subsidiary interest from noncontrolling interest	(29,817)	0
Distributions paid on common and preferred units	(197,124)	(205,131)
Other obligations related to secured borrowing	77,874	0
Tax withholdings related to restricted share awards	(3,915)	(2,989)
Deferred loan costs	(5,130)	(570)
Principal payments of on financing lease liabilities	0	(434)
Net cash used in financing activities	(474,848)	(1,104,751)
Net increase (decrease) in cash, cash equivalents, and restricted cash	48,094	(26,862)
Cash, cash equivalents, and restricted cash at beginning of year	336,984	372,795
Cash, cash equivalents, and restricted cash at end of period	385,078	345,933
Supplemental Disclosure of Non-Cash Investing and Financing Activities:
Exchange of preferred equity investment for real estate or equity in joint venture	190,652	0
Exchange of debt investment for real estate or equity in joint venture	193,995	9,468
Assumption of mortgage and mezzanine loans	1,712,750	60,000
Issuance of special distribution paid primarily in units	160,620	121,418
Tenant improvements and capital expenditures payable	18,518	16,684
Fair value adjustment to noncontrolling interest in the Operating Partnership	23,539	17,245
Consolidation of real estate investment	0	119,444
Deconsolidation of a subsidiary mortgage	0	510,000
Extinguishment of debt in connection with property dispositions	0	53,548
Debt and preferred equity investments	302	8,372
Removal of fully depreciated commercial real estate properties	4,048	7,030
Share repurchase payable	0	3,779
Sale of interest in partially owned entity	0	4,476
Recognition of right of use assets and related lease liabilities	57,938	115,812
Cash and cash equivalents	201,267	257,941
Restricted cash	183,811	87,992
Total cash, cash equivalents, and restricted cash	385,078	345,933
SL Green Operating Partnership
Operating Activities
Net (loss) income	(12,253)	528,813
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	148,267	179,039
Equity in net loss from unconsolidated joint ventures	31,262	31,321
Distributions of cumulative earnings from unconsolidated joint ventures	448	719
Equity in net loss on sale of interest in unconsolidated joint venture interest/real estate	131	5,438
Purchase price and other fair value adjustments	7,348	(209,527)
Depreciable real estate reserves and impairment	0	5,696
Loss (gain) on sale of real estate, net	61,104	(285,338)
Deferred rents receivable	(1,371)	(6,963)
Non-cash lease expense	17,332	11,670
Other non-cash adjustments	(11,950)	27,868
Changes in operating assets and liabilities:
Tenant and other receivables	7,800	(11,827)
Related party receivables	5,803	(4,626)
Deferred lease costs	(10,227)	(1,267)
Other assets	(35,114)	(118)
Accounts payable, accrued expenses, other liabilities and security deposits	21,345	(54,009)
Deferred revenue	17,208	7,412
Lease liability - operating leases	2,495	(33,289)
Net cash provided by operating activities	249,628	191,012
Investing Activities
Acquisitions of real estate property	(64,491)	(152,791)
Additions to land, buildings and improvements	(194,997)	(208,380)
Acquisition deposits and deferred purchase price	75,400	0
Investments in unconsolidated joint ventures	(146,598)	(76,471)
Distributions in excess of cumulative earnings from unconsolidated joint ventures	92,217	749,997
Net proceeds from disposition of real estate/joint venture interest	353,853	541,268
Cash and restricted cash assumed from acquisition of real estate investment	60,494	0
Cash assumed from consolidation of real estate investment	0	9,475
Proceeds from sale or redemption of marketable securities	11,465	4,528
Purchases of marketable securities	0	(10,000)
Other investments	1,619	2,401
Origination of debt and preferred equity investments	(40,053)	(83,924)
Repayments or redemption of debt and preferred equity investments	124,405	110,774
Net cash provided by investing activities	273,314	886,877
Financing Activities
Proceeds from mortgages and other loans payable	381,980	31,219
Repayments of mortgages and other loans payable	(290,936)	(372,300)
Proceeds from revolving credit facility and unsecured notes	1,124,000	925,000
Repayments of revolving credit facility and unsecured notes	(1,364,000)	(1,165,000)
Proceeds from stock options exercised and DRSPP issuance	339	613
Repurchase of common units	(151,197)	(280,623)
Redemption of preferred units	(17,967)	(3,631)
Redemption of OP units	(35,316)	(13,930)
Distributions to noncontrolling interests in other partnerships	(3,168)	(5,403)
Contributions from noncontrolling interests in other partnerships	52,164	310
Acquisition of subsidiary interest from noncontrolling interest	(29,817)	0
Distributions paid on common and preferred units	(209,759)	(217,013)
Other obligations related to secured borrowing	77,874	0
Tax withholdings related to restricted share awards	(3,915)	(2,989)
Deferred loan costs	(5,130)	(570)
Principal payments of on financing lease liabilities	0	(434)
Net cash used in financing activities	(474,848)	(1,104,751)
Net increase (decrease) in cash, cash equivalents, and restricted cash	48,094	(26,862)
Cash, cash equivalents, and restricted cash at beginning of year	336,984	372,795
Cash, cash equivalents, and restricted cash at end of period	385,078	345,933
Supplemental Disclosure of Non-Cash Investing and Financing Activities:
Redemption of units in the Operating Partnership for a joint venture sale	0	27,586
Exchange of preferred equity investment for real estate or equity in joint venture	190,652	0
Exchange of debt investment for real estate or equity in joint venture	193,995	9,468
Assumption of mortgage and mezzanine loans	1,712,750	60,000
Issuance of special distribution paid primarily in units	160,620	121,418
Tenant improvements and capital expenditures payable	18,518	16,684
Fair value adjustment to noncontrolling interest in the Operating Partnership	23,539	17,245
Consolidation of real estate investment	0	119,444
Deconsolidation of a subsidiary	0	66,837
Deconsolidation of a subsidiary mortgage	0	510,000
Extinguishment of debt in connection with property dispositions	0	53,548
Debt and preferred equity investments	302	8,372
Removal of fully depreciated commercial real estate properties	4,048	7,030
Distributions to noncontrolling interests	0	358
Share repurchase payable	0	3,779
Sale of interest in partially owned entity	0	4,476
Recognition of right of use assets and related lease liabilities	57,938	115,812
Cash and cash equivalents	201,267	257,941
Restricted cash	183,811	87,992
Total cash, cash equivalents, and restricted cash	$ 385,078	$ 345,933

Organization and Basis of Prese

Organization and Basis of Presentation	9 Months Ended
	Sep. 30, 2022
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 S.L. Green Management Corp, or the Service Corporation. All of the management, leasing and construction services that are provided to the properties that are wholly-owned by us and that are provided to certain joint ventures are conducted through SL Green Management LLC and S.L. Green Management Corp., respectively, which are 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 September 30, 2022, noncontrolling investors held, in the aggregate, a 5.52% limited partnership interest in the Operating Partnership. We refer to these interests as the noncontrolling interests in the Operating Partnership. The Operating Partnership is considered a variable interest entity, or VIE, in which we are the primary beneficiary. See Note 11, "Noncontrolling Interests on the Company's Consolidated Financial Statements." On December 2, 2021, our Board of Directors declared an ordinary dividend of $0.3108 per share and a special dividend of $2.4392 per share (together, "the Total Dividend"). The Total Dividend was paid on January 18, 2022 to shareholders of record at the close of business on December 15, 2021 ("the Record Date"). Shareholders had the opportunity to elect to receive the Total Dividend in the form of all cash or all stock, subject to proration if either option was oversubscribed. As a result of the elections made, the cash option was oversubscribed and was prorated. Shareholders who elected to receive cash received, for each share of common stock they owned as of the Record Date, approximately $0.3976 in cash and 0.0295 shares of common stock. Shareholders who elected to receive shares received, for each share of common stock they owned as of the Record Date, approximately 0.0345 shares of common stock. The number of shares issued was calculated based on the volume weighted average trading price of SLG's common stock between January 5-7, 2022 of $79.71 per share. To mitigate the dilutive impact of the common stock issued in the special dividend, the Board of Directors also authorized a reverse stock split, which was effective after markets closed on January 21, 2022. On January 10, 2022, a committee of the Board of Directors calculated the ratio for the reverse stock split of our issued and outstanding shares of common stock as 1.03060-for-1. After the issuance of the dividend and the completion of the reverse stock split, the number of shares of our common stock outstanding was equivalent to the number of total shares outstanding on the Record Date (not including any issuances or repurchases that occurred following the Record Date, as well as any fractional shares that would have been issued but for which cash-in-lieu was paid). However, on a relative basis, some individual shareholders may have more shares of SLG’s common stock, and some individual shareholders may have fewer shares of our common stock, depending on their individual elections to receive cash or stock and as a result of the cash option being oversubscribed. All share-related references and measurements including the number of shares outstanding, share prices, number of shares repurchased, earnings per share, dividends per share, and share-based compensation awards, have been retroactively adjusted to reflect the reverse stock split for all periods presented in this Quarterly Report on Form 10-Q. As of September 30, 2022, we owned the following interests in properties in the New York metropolitan area, primarily in midtown Manhattan. Our investments located outside of Manhattan are referred to as the Suburban properties: Consolidated Unconsolidated Total Location Property Number of Buildings Approximate Square Feet (unaudited) Number of Buildings Approximate Square Feet (unaudited) Number of Buildings Approximate Square Feet (unaudited) Weighted Average Occupancy (1) (unaudited) Commercial: Manhattan Office 13 9,963,138 12 13,998,381 25 23,961,519 91.4 % Retail 2 17,888 9 301,996 11 319,884 91.2 % Development/Redevelopment (1) 5 2,091,719 3 2,746,241 8 4,837,960 N/A 20 12,072,745 24 17,046,618 44 29,119,363 91.4 % Suburban Office 7 862,800 — — 7 862,800 80.1 % Total commercial properties 27 12,935,545 24 17,046,618 51 29,982,163 91.0 % Residential: Manhattan Residential 1 (2) 140,382 — — 1 140,382 85.6 % Total portfolio 28 13,075,927 24 17,046,618 52 30,122,545 90.9 % (1) The weighted average occupancy for commercial properties represents the total occupied square footage divided by the total square footage at acquisition. The weighted average occupancy for residential properties represents the total occupied units divided by the total available units. Properties under construction are not included in the calculation of weighted average occupancy. (2) As of September 30, 2022, we owned a building at 7 Dey Street / 185 Broadway that was comprised of approximately 140,382 square feet (unaudited) of residential space and approximately 50,206 square feet (unaudited) of office and retail space that is under development. For the purpose of this report, we have included this building in the number of residential properties we own. However, we have included only the residential square footage in the residential approximate square footage, and have listed the balance of the square footage as development square footage. As of September 30, 2022, we also manage one office building owned by a third party encompassing approximately 0.3 million square feet (unaudited), and held debt and preferred equity investments with a book value excluding the impact of credit losses of $670.6 million, excluding debt and preferred equity investments and other financing receivables totaling $8.5 million that are included in balance sheet line items other than the Debt and preferred equity investments line item. 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, subject to the priority distributions with respect to preferred units and special provisions that apply to Long Term Incentive Plan ("LTIP") Units. 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 September 30, 2022 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, 2022. 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, 2021 of the Company and the Operating Partnership. The consolidated balance sheet at December 31, 2021 has been derived from the audited financial statements as of that date but does not include all the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. Subsequent Events In October 2022, we entered into a corporate unsecured term loan facility. The facility consists of a $400.0 million term loan with a maturity date of October 6, 2023 and a six-month, as-of-right extension option to April 6, 2024. We also have an option, subject to customary conditions and lender commitments, to increase the capacity of the unsecured term loan facility to $500 million at any time prior to January 7, 2023. As of October 7, 2022, the 2022 unsecured term loan facility bears interest at 140 basis points over adjusted SOFR.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2022
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. 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 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. Investment in Commercial Real Estate Properties 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 3 years 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 1 year to 15 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 1 year to 15 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 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. The Company classifies those leases under which the Company is the lessee at lease commencement as finance or operating leases. Leases qualify as finance leases if the lease transfers ownership of the asset at the end of the lease term, the lease grants an option to purchase the asset that we are reasonably certain to exercise, the lease term is for a major part of the remaining economic life of the asset, or the present value of the lease payments exceeds substantially all of the fair value of the asset. Leases that do not qualify as finance leases are deemed to be operating leases. At lease commencement the Company records a lease liability which is measured as the present value of the lease payments and a right of use asset which is measured as the amount of the lease liability and any initial direct costs incurred. The Company applies a discount rate to determine the present value of the lease payments. If the rate implicit in the lease is known, the Company uses that rate. If the rate implicit in the lease is not known, the Company uses a discount rate reflective of the Company’s collateralized borrowing rate given the term of the lease. To determine the discount rate, the Company employs a third party specialist to develop an analysis based primarily on the observable borrowing rates of the Company, other REITs, and other corporate borrowers with long-term borrowings. On the consolidated statements of operations, operating leases are expensed through operating lease rent while financing leases are expensed through amortization and interest expense. When applicable, the Company combines the consideration for lease and non-lease components in the calculation of the value of the lease obligation and right-of-use asset. On a periodic basis, we assess whether there are any indications that the value of our real estate properties may be 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) 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 fair value of the property as calculated in accordance with Accounting Standards Codification, or ASC 820. We also evaluate our real estate properties for impairment when a 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 and depreciation expense is no longer recorded. For the three months ended September 30, 2022, we recognized additional rental revenue of $0.2 million for the amortization of aggregate below-market leases in excess of above-market leases resulting from the allocation of the purchase price of the applicable properties. For the nine months ended September 30, 2022, we recognized a reduction of rental revenue of ($0.1 million) for the amortization of aggregate above-market leases in excess of below-market leases. For the three and nine months ended September 30, 2021, we recognized a reduction of rental revenue of ($0.3 million) and ($4.0 million), 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 September 30, 2022 and December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Identified intangible assets (included in other assets): Gross amount $ 403,552 $ 199,722 Accumulated amortization (179,211) (182,643) Net (1) $ 224,341 $ 17,079 Identified intangible liabilities (included in deferred revenue): Gross amount $ 361,338 $ 212,767 Accumulated amortization (203,064) (210,262) Net (1) $ 158,274 $ 2,505 (1) As of September 30, 2022, no net intangible assets and no net intangible liabilities were reclassified to assets held for sale or liabilities related to assets held for sale. As of December 31, 2021, $1.8 million of net intangible assets and no net intangible liabilities were reclassified to assets held for sale and liabilities related to assets held for sale. Cash and Cash Equivalents We consider all highly liquid investments with maturity of three months or less when purchased to be cash equivalents. Restricted Cash Restricted cash primarily consists of security deposits held on behalf of our tenants, interest reserves, as well as capital improvement and real estate tax escrows required under certain loan agreements. Fair Value Measurements See Note 16, "Fair Value Measurements." Investment in Marketable Securities At acquisition, we designate a debt security as held-to-maturity, available-for-sale, or trading. As of September 30, 2022, we did not have any debt securities designated as held-to-maturity or trading. We account for our available-for-sale securities 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. The cost of marketable securities sold and the amount reclassified out of accumulated other comprehensive income (loss) into earnings is determined using the specific identification method. Credit losses are recognized in accordance with ASC 326. We account for our equity marketable securities at fair value pursuant to ASC 820-10, with the net unrealized gains or losses reported in net income. As of September 30, 2022 and December 31, 2021, we held the following marketable securities (in thousands): September 30, 2022 December 31, 2021 Commercial mortgage-backed securities $ 12,039 $ 24,146 Total marketable securities available-for-sale $ 12,039 $ 24,146 Equity marketable securities $ 4,496 $ 10,606 Total investment in marketable securities $ 16,535 $ 34,752 The cost basis of the commercial mortgage-backed securities was $11.5 million as of September 30, 2022 and $23.0 million as of December 31, 2021. These securities mature at various times through 2030. All securities were in an unrealized gain position as of September 30, 2022. All securities were in an unrealized gain position as of December 31, 2021 except for one security, which had an unrealized loss of $0.6 million and a fair value of $7.2 million, and was in a continuous unrealized loss position for more than 12 months. This marketable security was sold at par during the three months ended September 30, 2022. We do not intend to sell our other securities, and it is more likely than not that we will not be required to sell the investments before recovery of their amortized cost bases. We held equity marketable securities as of September 30, 2022 and December 31, 2021. We recognized $0.1 million of unrealized gain for the three months ended September 30, 2022 and $6.1 million of unrealized loss for the nine months ended September 30, 2022. We recognized $2.0 million and $0.1 million of unrealized gains for the three and nine months ended September 30, 2021. We did not dispose of any equity marketable securities during the three and nine months ended September 30, 2022. During the three and nine months ended September 30, 2022, we received aggregate net proceeds of $7.8 million from the sale of one debt marketable security and $3.7 million from the repayment of one debt marketable security. We did not dispose of any debt marketable securities during the three months ended September 30, 2021. During the nine months ended September 30, 2021, we received aggregate net proceeds of $4.5 million from the repayment of one debt marketable security. 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 each joint ventures' actual and projected cash flows. We do not believe that the values of any of our equity investments were impaired at September 30, 2022. Deferred Lease Costs Deferred lease costs consist of incremental fees and direct costs that would not have been incurred if the lease had not been obtained and are amortized on a straight-line basis over the related lease term. Lease Classification Lease classification for leases under which the Company is the lessor is evaluated at lease commencement and leases not classified as sales-type leases or direct financing leases are classified as operating leases. Leases qualify as sales-type leases if the contract includes either transfer of ownership clauses, certain purchase options, a lease term representing a major part of the economic life of the asset, or the present value of the lease payments and residual guarantees provided by the lessee exceeds substantially all of the fair value of the asset. Additionally, leasing an asset so specialized that it is not deemed to have any value to the Company at the end of the lease term may also result in classification as a sales-type lease. Leases qualify as direct financing leases when the present value of the lease payments and residual value guarantees provided by the lessee and unrelated third parties exceeds substantially all of the fair value of the asset and collection of the payments is probable. Revenue Recognition Rental revenue for operating leases is recognized on a straight-line basis over the term of the lease. Rental revenue recognition commences when the leased space is available for its intended use by the lessee. To determine whether the leased space is available for its intended use by the lessee, management evaluates whether we or the tenant are 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 of tenant improvements, rental revenue recognition begins when the tenant takes possession of or controls the space. 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. In addition to base rent, our tenants also generally will pay variable rent, which represents their pro rata share of increases in real estate taxes and certain operating expenses for the building over a base year. In some leases, in lieu of paying additional rent based upon increases in certain 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. Rental revenue is recognized if collectability is probable. If collectability of substantially all of the lease payments is assessed as not probable, any difference between the rental revenue recognized to date and the lease payments that have been collected is recognized as a current-period adjustment to rental revenue. A subsequent change in the assessment of collectability to probable may result in a current-period adjustment to rental revenue for any difference between the rental revenue that would have been recognized if collectability had always been assessed as probable and the rental revenue recognized to date. The Company provides its tenants with certain customary services for lease contracts such as common area maintenance and general security. We have elected to combine the non-lease components with the lease components of our operating lease agreements and account for them as a single lease component in accordance with ASC 842. We record a gain or loss on sale of real estate assets when we no longer have a controlling financial interest in the entity owning the real estate, a contract exists with a third party and that third party has control of the assets acquired. Investment income on debt and preferred equity investments is accrued based on the contractual terms of the instruments and when it is deemed collectible. Some 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 collectible. 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 an adjustment to 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 cash flows 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. We consider a debt and preferred equity investment to be past due when amounts contractually due have not been paid. 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 is resumed on any debt or preferred equity investment that is on non-accrual status when such debt or preferred equity investment becomes contractually current and performance is demonstrated to be resumed. We may syndicate a portion of the loans that we originate or sell the loans individually. When a transaction meets the criteria for sale accounting, we 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 operations. Any fees received at the time of sale or syndication are recognized as part of investment income. Asset management fees are recognized on a straight-line basis over the term of the asset management agreement. Debt and Preferred Equity Investments Debt and preferred equity investments are presented at the net amount expected to be collected in accordance with ASC 326. An allowance for loan losses is deducted from the amortized cost basis of the financial assets to present the net carrying value at the amount expected to be collected through the expected maturity date of such investments. The expense for loan loss and other investment reserves is the charge to earnings to adjust the allowance for loan losses to the appropriate level. Amounts are written off from the allowance when we de-recognize the related investment either as a result of a sale of the investment or acquisition of equity interests in the collateral. The Company evaluates the amount expected to be collected based on current market and economic conditions, historical loss information, and reasonable and supportable forecasts. The Company's assumptions are derived from both internal data and external data which may include, among others, governmental economic projections for the New York City Metropolitan area, public data on recent transactions and filings for securitized debt instruments. This information is aggregated by asset class and adjusted for duration. Based on these inputs, loans are evaluated at the individual asset level. In certain instances, we may also use a probability-weighted model that considers the likelihood of multiple outcomes and the amount expected to be collected for each outcome. The evaluation of the possible credit deterioration associated with the performance and/or value of the underlying collateral property as well as the financial and operating capability of the borrower/sponsor requires significant judgment, which include both asset level and market assumptions over the relevant time period. In addition, quarterly, the Company assigns each loan a risk rating. Based on a 3-point scale, loans are rated “1” through “3,” from lower risk to higher risk, which ratings are defined as follows: 1 - Low Risk Assets - Low probability of loss, 2 - Watch List Assets - Higher potential for loss, 3 - High Risk Assets - Loss more likely than not. Loans with risk ratings of 2 or above are evaluated to determine whether the expected risk of loss is appropriately captured through the combination of our expectations of current conditions, historical loss information and supportable forecasts described above or whether risk characteristics specific to the loan warrant the use of a probability-weighted model. Financing investments that are classified as held for sale are carried at the expected amount to be collected 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 expected amount to be collected. Other financing receivables that are included in balance sheet line items other than the Debt and preferred equity investments line are also measured at the net amount expected to be collected. Accrued interest receivable amounts related to these debt and preferred equity investment and other financing receivables are recorded at the net amount expected to be collected within Other assets in the consolidated balance sheets. Accrued interest receivables that are written off are recognized as an expense in loan loss and other investment reserves. 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, SL Green will be subject to Federal income tax on its 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 its 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 operations relates to the Operating Partnership’s consolidated taxable REIT subsidiaries. The Operating Partnership may also be subject to certain state, local and franchise taxes. We have elected, and may elect in the future, to treat certain of our 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 September 30, 2022, we recorded a Federal, state and local tax benefit of $0.1 million. During the nine months ended September 30, 2022, we recorded a Federal, state and local tax provision of $2.2 million. During the three months ended September 30, 2021, we recorded no Federal, state and local tax provision. During the nine months ended September 30, 2021, we recorded a Federal, state and local tax provision of $1.5 million. 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. 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 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 initial and ongoing evaluations of the credit quality 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 potential source of funds to offset the economic costs associated with lost revenue from that tenant and the costs associated with re-tenanting a space. The properties in our real estate portfolio are located in the New York metropolitan area, principally in Manhattan. Our tenants operate in various industries. Other than one tenant, ViacomCBS Inc., which accounted for 6.0% of our share of annualized cash rent as of September 30, 2022, no other tenant in our portfolio accounted for more than 5.0% of our share of annualized cash rent, including our share of joint venture annualized cash rent, for the three months ended September 30, 2022. For the three months ended September 30, 2022, the following properties contributed more than 5.0% of our annualized cash rent from office properties, including our share of annualized cash rent from joint venture office properties: Property Three months ended September 30, 2022 One Vanderbilt Avenue 14.3% 11 Madison Avenue 8.6% 1185 Avenue of the Americas 6.9% 420 Lexington Ave 6.8% 1515 Broadway 6.4% 280 Park Avenue 5.6% 919 Third Avenue 5.0% Reclassification Certain prior year balances have been reclassified to conform to our current year presentation. Accounting Standards Updates In March 2022, the FASB issued ASU No. 2022-02 Financial Instruments - Credit Losses (Topic 326) Troubled Debt Restructurings and Vintage Disclosures. ASU 2022-02 eliminates the troubled debt restructuring recognition and measurement guidance and, instead, requires that an entity evaluate whether the modification represents a new loan or a continuation of an existing loan. The amendments enhance existing disclosure requirements and introduce new requirements related to certain modifications of receivables made to borrowers experiencing financial difficulties. Additionally, ASU 2022-02 requires an entity to disclose current-period gross write-offs by year of origination for financing receivables and net investment in leases within the scope of Subtopic 326-20. Gross write-off information must be included in the vintage disclosures required for entities in accordance with Subtopic 326-20, which requires that an entity disclose the amortized cost basis of financing receivables by credit-quality indicator and class of financing receivable by year of origination. ASU 2022-02 is effective for reporting periods beginning after December 15, 2022, including interim periods within those fiscal years, with early adoption permitted. We are currently evaluating the impact of the adoption of ASU 2022-02 on our consolidated financial statements, but do not believe the adoption of this standard will have a material impact on our consolidated financial statements. In July 2021, the FASB issued ASU No. 2021-05 Leases (Topic 842) Lessors - Certain Leases with Variable Lease Payments. ASU 2021-05 amends the lease classification requirements for lessors when classifying and accounting for a lease with variable lease payments that do not depend on a reference rate index or a rate. The update provides criteria, that if met, the lease would be classified and accounted for as an operating lease. ASU 2021-05 is effective for reporting periods beginning after December 15, 2021. The Company adopted this guidance on January 1, 2022 and it did not have a material impact on the Company's consolidated financial statements. In August 2020, the FASB issued Accounting Standard Update, or "ASU," No. 2020-06 Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40). ASU 2020-06 simplifies the accounting for convertible instruments by reducing the number of accounting models for convertible debt instruments and convertible preferred stock, removes certain settlement conditions that are required for equity contracts to qualify for the derivative scope exception and also simplifies the diluted earnings per share calculation in certain areas. ASU 2020-06 is effective for reporting periods beginning after December 15, 2021. The Company adopted this guidance on January 1, 2022 and it did not have a material impact on the Company's consolidated financial statements.

Property Acquisitions

Property Acquisitions	9 Months Ended
	Sep. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Property Acquisitions	Property Acquisitions The following table summarizes the properties acquired during the nine months ended September 30, 2022: Property Acquisition Date Property Type Approximate Square Feet Gross Asset Valuation (in millions) 245 Park Avenue (1) September 2022 Fee Interest 1,782,793 $ 1,960.0 (1) On October 31, 2021, HNA, through an affiliated entity, filed for Chapter 11 bankruptcy protection on account of its investment in 245 Park Avenue, together with another asset in Chicago. On July 8, 2022, certain of the debtors and affiliates of SL Green entered into a Plan Sponsorship and Investment Agreement (the "Plan"), pursuant to which SL Green became the stalking horse bidder for the property. Since the debtors did not receive any qualifying bids for the property and the Plan was confirmed, SL Green acquired full ownership and control of the property in September 2022, at which time the Company's outstanding preferred equity and accrued interest balance were credited to our equity investment in the property . We recorded the assets acquired and liabilities assumed at fair value. See Note 5, "Debt and Preferred Equity Investments" and Note 16, "Fair Value Measurements."

Properties Held for Sale and Pr

Properties Held for Sale and Property Dispositions	9 Months Ended
	Sep. 30, 2022
Discontinued Operations and Disposal Groups [Abstract]
Properties Held for Sale and Property Dispositions	Properties Held for Sale and Property Dispositions Properties Held for Sale As of September 30, 2022, no properties were classified as held for sale. Property Dispositions The following table summarizes the properties disposed of during the nine months ended September 30, 2022: Property Disposition Date Property Type Approximate Square Feet Sales Price (in millions) (Loss) Gain (in millions) (1) 707 Eleventh Avenue February 2022 Fee Interest 159,720 $ 95.0 $ (0.8) 1080 Amsterdam Avenue April 2022 Leasehold Interest 85,250 42.7 17.9 1591-1597 Broadway May 2022 Fee Interest 7,684 121.0 (4.5) 609 Fifth Avenue June 2022 Fee Interest 138,563 100.5 (80.2) (1) The (losses) gains on sale are net of $5.6 million of employee compensation accrued in connection with the realization of the investment dispositions during the nine months ended September 30, 2022. Additionally, the amounts do not include adjustments for expenses recorded in subsequent periods.

Debt and Preferred Equity Inves

Debt and Preferred Equity Investments	9 Months Ended
	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Debt and Preferred Equity Investments	Debt and Preferred Equity Investments Below is a summary of the activity in our debt and preferred equity investments for the nine months ended September 30, 2022 and the twelve months ended December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Balance at beginning of year (1) $ 1,088,723 $ 1,076,542 Debt investment originations/fundings/accretion (2) 48,778 193,824 Preferred equity investment originations/accretion (2) 35,536 13,220 Redemptions/sales/syndications/equity ownership/amortization (3) (509,052) (201,446) Net change in loan loss reserves — 6,583 Balance at end of period (1) $ 663,985 $ 1,088,723 (1) Net of unamortized fees, discounts, and premiums. (2) Accretion includes amortization of fees and discounts and paid-in-kind investment income. (3) Certain participations in debt investments that were sold or syndicated, but did not meet the conditions for sale accounting, are included in Other assets and Other liabilities on the consolidated balance sheets. Below is a summary of our debt and preferred equity investments as of September 30, 2022 (dollars in thousands): Floating Rate Fixed Rate Total Carrying Value Senior Financing Weighted Average Yield at End of Period Maturity (1) Type Carrying Value Face Value Interest Rate Carrying Value Face Value Interest Rate Senior Mortgage Debt $ 32,616 $ 32,658 L + 3.50% $ — $ — —% $ 32,616 $ — 7.21% 2022 Mezzanine Debt 156,833 157,320 L + 4.95% - 12.38% 356,647 364,742 7.00% - 14.30% 513,480 1,663,817 6.27% 2022 - 2029 Preferred Equity — — — 117,889 117,889 6.5% 117,889 250,000 6.55% 2027 Balance at end of period $ 189,449 $ 189,978 $ 474,536 $ 482,631 $ 663,985 $ 1,913,817 (1) Excludes available extension options to the extent they have not been exercised as of the date of this filing. The following table is a roll forward of our total allowance for loan losses for the nine months ended September 30, 2022 and the twelve months ended December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Balance at beginning of year $ 6,630 $ 13,213 Write-offs charged against the allowance — (6,583) Balance at end of period (1) $ 6,630 $ 6,630 (1) As of September 30, 2022, all financing receivables on non-accrual had an allowance for loan loss except for one debt investment with a carrying value of $225.4 million. As of September 30, 2022 and December 31, 2021, all debt and preferred equity investments were performing in accordance with their respective terms, with the exception of one investment with a carrying value, net of reserves, of $6.9 million, as discussed in the Debt Investments and Preferred Equity Investments tables further below. No other financing receivables were 90 days past due as of September 30, 2022 and December 31, 2021. The following table sets forth the carrying value of our debt and preferred equity investment portfolio by risk rating as of September 30, 2022 and December 31, 2021 (dollars in thousands): Risk Rating September 30, 2022 December 31, 2021 1 - Low Risk Assets - Low probability of loss $ 307,492 $ 644,489 2 - Watch List Assets - Higher potential for loss 349,603 437,344 3 - High Risk Assets - Loss more likely than not 6,890 6,890 $ 663,985 $ 1,088,723 The following table sets forth the carrying value of our debt and preferred equity investment portfolio by year of origination and risk rating as of September 30, 2022 (dollars in thousands): As of September 30, 2022 Risk Rating 2022 (1) 2021 (1) 2020 (1) Prior (1) Total 1 - Low Risk Assets - Low probability of loss $ — $ — $ 168,223 $ 139,269 $ 307,492 2 - Watch List Assets - Higher potential for loss — 74,390 — 275,213 349,603 3 - High Risk Assets - Loss more likely than not — — — 6,890 6,890 $ — $ 74,390 $ 168,223 $ 421,372 $ 663,985 (1) Year in which the investment was originated or acquired by us or in which a material modification occurred. We have determined that we have one portfolio segment of financing receivables as of September 30, 2022 and December 31, 2021 comprised of commercial real estate which is primarily recorded in debt and preferred equity investments. Included in Other assets is an additional amount of financing receivables representing loans to joint venture partners totaling $9.0 million and $10.5 million as of September 30, 2022 and December 31, 2021, respectively. The Company recorded no provisions for loan losses related to these financing receivables for the three and nine months ended September 30, 2022 and 2021. All of these loans have a risk rating of 2 and were performing in accordance with their respective terms. Debt Investments As of September 30, 2022 and December 31, 2021, we held the following debt investments with an aggregate weighted average current yield of 6.32% as of September 30, 2022 (dollars in thousands): Loan Type September 30, 2022 September 30, 2022 Senior September 30, 2022 Carrying Value (1) December 31, 2021 (1) Maturity (2) Fixed Rate Investments: Mezzanine Loan (3) $ — $ 394,854 $ 225,367 $ 225,367 June 2023 Mezzanine Loan — 281,147 74,390 66,873 June 2023 Mezzanine Loan (4)(5) — 105,000 13,366 13,366 June 2024 Mezzanine Loan — 95,000 30,000 30,000 January 2025 Mezzanine Loan — 85,000 20,000 20,000 December 2029 Mezzanine Loan — — — 43,521 Mortgage Loan — — — 73,000 Mezzanine Loan (6) — — — 55,250 Total fixed rate $ — $ 961,001 $ 363,123 $ 527,377 Floating Rate Investments: Mortgage and Mezzanine Loan $ 8,257 $ — $ 50,186 $ 34,874 December 2022 Mezzanine Loan — 275,000 50,000 49,998 April 2023 Mezzanine Loan 3,761 54,000 8,243 8,050 May 2023 Mezzanine Loan 22,592 187,733 42,091 30,802 May 2023 Mezzanine Loan — 186,084 39,083 37,511 July 2023 Mezzanine Loan (7) — — — 133,735 Total floating rate $ 34,610 $ 702,817 $ 189,603 $ 294,970 Allowance for loan loss — — (6,630) (6,630) Total $ 34,610 $ 1,663,818 $ 546,096 $ 815,717 (1) Carrying value is net of discounts, premiums, original issue discounts and deferred origination fees. (2) Represents contractual maturity, excluding any extension options to the extent they have not been exercised as of the date of this filing. (3) This loan was put on non-accrual in July 2020 and remains on non-accrual as of September 30, 2022. No investment income has been recognized subsequent to it being put on non-accrual. The Company is in discussions with the borrower. (4) Carrying value is net of a $12.4 million participation that was sold and did not meet the conditions for sale accounting, which is included in Other assets and Other liabilities on the consolidated balance sheets as a result. (5) This loan went into default and was put on non-accrual in June 2020 and remains on non-accrual as of September 30, 2022. No investment income has been recognized subsequent to it being put on non-accrual. The Company is in discussions with the borrower. Additionally, we determined the borrower entity to be a VIE, in which we are not the primary beneficiary. (6) In September 2022, the Company successfully acquired full ownership and control of the property at 245 Park Avenue. See below table and Note 3, "Property Acquisitions." (7) In September 2022, the Company converted its mezzanine loan position secured by the equity interest in 5 Times Square to an equity interest in a joint venture partnership with the existing equity holders. See Note 6, " Investments in Unconsolidated Joint Ventures." Preferred Equity Investments As of September 30, 2022 and December 31, 2021, we held the following preferred equity investments with an aggregate weighted average current yield of 6.55% as of September 30, 2022 (dollars in thousands): Type September 30, 2022 September 30, 2022 Senior September 30, 2022 Carrying Value (1) December 31, 2021 (1) Mandatory Redemption (2) Preferred Equity $ — $ 250,000 $ 117,889 $ 112,234 February 2027 Preferred Equity (3) — — — 160,772 Total Preferred Equity $ — $ 250,000 $ 117,889 $ 273,006 Allowance for loan loss — — — — Total $ — $ 250,000 $ 117,889 $ 273,006 (1) Carrying value is net of deferred origination fees. (2) Represents contractual redemption, excluding any unexercised extension options. (3) On October 31, 2021, HNA, through an affiliated entity, filed for Chapter 11 bankruptcy protection on account of its investment in 245 Park Avenue, together with another asset in Chicago. On July 8, 2022, certain of the debtors and affiliates of SL Green entered into the Plan, pursuant to which SL Green became the stalking horse bidder for the property. Since the debtors did not receive any qualifying bids for the property and the Plan was confirmed, SL Green acquired full ownership and control of the property in September 2022, at which time the Company's outstanding preferred equity and accrued interest balance were credited to our equity investment in the property. See Note 3, "Property Acquisitions."

Investments in Unconsolidated J

Investments in Unconsolidated Joint Ventures	9 Months Ended
	Sep. 30, 2022
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 September 30, 2022, the book value of these investments was $3.2 billion, net of investments with negative book values totaling $114.4 million for which we have an implicit commitment to fund future capital needs. As of September 30, 2022, 800 Third Avenue and 21 East 66th Street are VIEs in which we are not the primary beneficiary. As of December 31, 2021, 800 Third Avenue, 21 East 66th Street, and certain properties within the Stonehenge Portfolio were VIEs in which we were not the primary beneficiary. Our net equity investment in these VIEs was $87.2 million and $85.6 million as of September 30, 2022 and December 31, 2021, respectively. Our maximum loss is limited to the amount of our equity investment in these VIEs. See the "Principles of Consolidation" section of Note 2, "Significant Accounting Policies." 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 September 30, 2022: Property Partner Ownership (1) Economic (1) Unaudited Approximate Square Feet 100 Park Avenue Prudential Real Estate Investors 49.90% 49.90% 834,000 717 Fifth Avenue Wharton Properties / Private Investor 10.92% 10.92% 119,500 800 Third Avenue Private Investors 60.52% 60.52% 526,000 919 Third Avenue New York State Teacher's Retirement System 51.00% 51.00% 1,454,000 11 West 34th Street Private Investor / Wharton Properties 30.00% 30.00% 17,150 280 Park Avenue Vornado Realty Trust 50.00% 50.00% 1,219,158 1552-1560 Broadway (2) Wharton Properties 50.00% 50.00% 57,718 10 East 53rd Street Canadian Pension Plan Investment Board 55.00% 55.00% 354,300 21 East 66th Street (3) Private Investors 32.28% 32.28% 13,069 650 Fifth Avenue (4) Wharton Properties 50.00% 50.00% 69,214 121 Greene Street Wharton Properties 50.00% 50.00% 7,131 11 Madison Avenue PGIM Real Estate 60.00% 60.00% 2,314,000 One Vanderbilt Avenue National Pension Service of Korea / Hines Interest LP 71.01% 71.01% 1,657,198 Worldwide Plaza RXR Realty / New York REIT 24.95% 24.95% 2,048,725 1515 Broadway Allianz Real Estate of America 56.87% 56.87% 1,750,000 2 Herald Square Israeli Institutional Investor 51.00% 51.00% 369,000 115 Spring Street Private Investor 51.00% 51.00% 5,218 15 Beekman (5) A fund managed by Meritz Alternative Investment Management 20.00% 20.00% 221,884 85 Fifth Avenue Wells Fargo 36.27% 36.27% 12,946 One Madison Avenue (6) National Pension Service of Korea / Hines Interest LP / International Investor 25.50% 25.50% 1,048,700 220 East 42nd Street A fund managed by Meritz Alternative Investment Management 51.00% 51.00% 1,135,000 450 Park Avenue (7) Korean Institutional Investor / Israeli Institutional Investor 50.10% 25.10% 337,000 5 Times Square (8) RXR Realty led investment group 31.55% 31.55% 1,131,735 (1) Ownership interest and economic interest represent the Company's interests in the joint venture as of September 30, 2022. Changes in ownership or economic interests within the current year are disclosed in the notes below. (2) 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. (3) We hold a 32.28% interest in three retail units and one residential unit at the property and a 16.14% interest in two residential units at the property. (4) The joint venture owns a long-term leasehold interest in the retail space at 650 Fifth Avenue. (5) In 2020, the Company formed a joint venture, which then entered into a long-term sublease with the Company. (6) In 2020, the Company admitted partners to the One Madison Avenue development project, which resulted in the Company no longer retaining a controlling interest in the entity, as defined in ASC 810, and the deconsolidation of our remaining 50.5% interest. We recorded our investment at fair value, which resulted in the recognition of a fair value adjustment of $187.5 million in 2020. The fair value of our investment was determined by the terms of the joint venture agreement governing the capitalization of the project. The partners have committed aggregate equity to the project totaling no less than $501.8 million and their ownership interest in the joint venture is based on their capital contributions, up to an aggregate maximum of 49.5%. As of September 30, 2022, the total of the two partners' ownership interests based on equity contributed was 40.0%. In 2021, the Company admitted an additional partner to the development project for a committed aggregate equity investment totaling no less than $259.3 million. The partner's indirect ownership interest in the joint venture is based on it's capital contributions, up to an aggregate maximum of 25.0%. The transaction did not meet sale accounting under ASC 860 and, as a result, was treated as a secured borrowing for accounting purposes and is included in Other liabilities in our consolidated balance sheets at September 30, 2022 and December 31, 2021. (7) The 50.1% ownership interest reflected in this table is comprised of our 25.1% economic interest and a 25.0% economic interest held by a third-party. The third-party's economic interest is held within a joint venture that we consolidate and recognize in Noncontrolling interests in other partnerships on our consolidated balance sheet. An additional third-party owns the remaining 49.9% economic interest in the property. (8) In September 2022, the Company converted its mezzanine loan position secured by the equity interest in 5 Times Square to an equity interest in a joint venture partnership with the existing equity holders. See Note 5, " Debt and Preferred Equity Investments." Disposition of Joint Venture Interests or Properties The following table summarizes the investments in unconsolidated joint ventures disposed of during the nine months ended September 30, 2022: Property Ownership Interest Disposed Disposition Date Gross Asset Valuation (in millions) (Loss) Gain on Sale (in millions) (1) Stonehenge Portfolio Various April 2022 $ 1.0 $ — (1) Represents the Company's share of the gain or loss. Joint Venture Mortgages and Other Loans Payable We generally finance our joint ventures with non-recourse debt. In certain cases we may provide guarantees or master leases, which terminate upon the satisfaction of specified circumstances or repayment of the underlying loans. The mortgage notes and other loans payable collateralized by the respective joint venture properties and assignment of leases as of September 30, 2022 and December 31, 2021, respectively, are as follows (dollars in thousands): Property Economic (1) Current Maturity Final Maturity Date (2) Interest Rate (3) September 30, 2022 December 31, 2021 Fixed Rate Debt: 717 Fifth Avenue (mortgage) 10.92 % July 2022 (4) July 2022 (4) 4.45 % $ 300,000 $ 300,000 717 Fifth Avenue (mezzanine) 10.92 % July 2022 (4) July 2022 (4) 5.50 % 355,328 355,328 650 Fifth Avenue (mortgage) 50.00 % October 2022 (5) October 2022 (5) 4.46 % 210,000 210,000 650 Fifth Avenue (mezzanine) 50.00 % October 2022 (5) October 2022 (5) 5.45 % 65,000 65,000 21 East 66th Street 32.28 % April 2023 April 2028 3.60 % 12,000 12,000 919 Third Avenue 51.00 % June 2023 June 2023 5.12 % 500,000 500,000 220 East 42nd Street 51.00 % June 2023 June 2025 5.75 % 510,000 510,000 1515 Broadway 56.87 % March 2025 March 2025 3.93 % 787,296 801,845 11 Madison Avenue 60.00 % September 2025 September 2025 3.84 % 1,400,000 1,400,000 One Madison Avenue (6) 25.50 % November 2025 November 2026 3.90 % 356,201 169,629 800 Third Avenue 60.52 % February 2026 February 2026 3.37 % 177,000 177,000 Worldwide Plaza 24.95 % November 2027 November 2027 3.98 % 1,200,000 1,200,000 One Vanderbilt Avenue 71.01 % July 2031 July 2031 2.95 % 3,000,000 3,000,000 Stonehenge Portfolio — 195,493 Total fixed rate debt $ 8,872,825 $ 8,896,295 Floating Rate Debt: 1552 Broadway 50.00 % October 2022 (7) October 2022 (7) L+ 2.65 % $ 193,132 $ 193,132 121 Greene Street 50.00 % November 2022 November 2022 L+ 2.00 % 12,636 13,228 2 Herald Square 51.00 % November 2022 November 2023 L+ 1.95 % 192,500 200,989 11 West 34th Street 30.00 % January 2023 January 2023 L+ 1.45 % 23,000 23,000 115 Spring Street 51.00 % September 2023 September 2023 L+ 3.40 % 65,550 65,550 280 Park Avenue 50.00 % September 2023 September 2024 L+ 1.73 % 1,200,000 1,200,000 100 Park Avenue 49.90 % December 2023 December 2025 L+ 2.25 % 360,000 360,000 15 Beekman (8) 20.00 % January 2024 July 2025 L+ 1.50 % 73,136 43,566 5 Times Square 31.55 % September 2024 September 2026 S+ 4.69 % 847,469 — 10 East 53rd Street 55.00 % February 2025 February 2025 L+ 1.35 % 220,000 220,000 450 Park Avenue 25.10 % June 2025 June 2027 S+ 2.10 % 267,000 — 21 East 66th Street 32.28 % June 2033 June 2033 T+ 2.75 % 598 632 Total floating rate debt $ 3,455,021 $ 2,320,097 Total joint venture mortgages and other loans payable $ 12,327,846 $ 11,216,392 Deferred financing costs, net (129,765) (130,516) Total joint venture mortgages and other loans payable, net $ 12,198,081 $ 11,085,876 (1) Economic interest represents the Company's interests in the joint venture as of September 30, 2022. Changes in ownership or economic interests, if any, within the current year are disclosed in the notes to the investment in unconsolidated joint ventures table above. (2) Reflects exercise of all available options. The ability to exercise extension options may be subject to certain conditions, including meeting tests based on the operating performance of the property. (3) Interest rates as of September 30, 2022, taking into account interest rate hedges in effect during the period. Floating rate debt is presented with the stated spread over the 30-day LIBOR ("L"), Term SOFR ("S") or 1-year Treasury ("T"). (4) This loan matured in July 2022. The Company is in discussions with the lender on resolution. (5) In October 2022, the maturity date of the loan was extended by six months. (6) The loan is a $1.25 billion construction facility with an initial term of five years with one, one year extension option. Advances under the loan are subject to costs incurred. In conjunction with the loan, we provided partial guarantees for interest and principal payments, the amounts of which are based on certain construction milestones and operating metrics. (7) This loan matured in October 2022. The Company is in discussions with the lender on a resolution. (8) This loan is a $125.0 million construction facility. Advances under the loan are subject to costs incurred. We are entitled to receive fees for providing management, leasing, construction supervision and asset management services to certain of our joint ventures. We earned $5.8 million and $15.0 million from these services, net of our ownership share of the joint ventures, for the three and nine months ended September 30, 2022, respectively. We earned $5.3 million and $12.0 million from these services, net of our ownership share of the joint ventures, for the three and nine months ended September 30, 2021, 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 September 30, 2022 and December 31, 2021 are as follows (in thousands): September 30, 2022 December 31, 2021 Assets (1) Commercial real estate property, net $ 15,729,750 $ 14,763,874 Cash and restricted cash 720,053 768,510 Tenant and other receivables, related party receivables, and deferred rents receivable 605,766 533,455 Other assets 2,604,858 1,776,030 Total assets $ 19,660,427 $ 17,841,869 Liabilities and equity (1) Mortgages and other loans payable, net $ 12,198,081 $ 11,085,876 Deferred revenue 1,117,156 1,158,242 Lease liabilities 987,390 980,595 Other liabilities 443,393 352,499 Equity 4,914,407 4,264,657 Total liabilities and equity $ 19,660,427 $ 17,841,869 Company's investments in unconsolidated joint ventures $ 3,185,800 $ 2,997,934 (1) At September 30, 2022, $538.8 million of net unamortized basis differences between the amount at which our investments are carried and our share of equity in net assets of the underlying property will be amortized through equity in net income (loss) from unconsolidated joint ventures over the remaining life of the underlying items having given rise to the differences. The combined statements of operations for the unconsolidated joint ventures, from acquisition date through the three and nine months ended September 30, 2022 and 2021, are as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Total revenues $ 330,705 $ 314,288 $ 997,670 $ 905,017 Operating expenses 59,841 54,157 173,327 142,800 Real estate taxes 66,594 58,367 186,710 166,974 Operating lease rent 6,616 5,644 19,465 16,931 Interest expense, net of interest income 112,747 90,710 305,977 248,588 Amortization of deferred financing costs 7,116 10,661 20,568 24,249 Depreciation and amortization 116,511 119,537 343,183 351,372 Total expenses 369,425 339,076 1,049,230 950,914 Loss on early extinguishment of debt — (1,158) (467) (2,484) Net loss before (loss) gain on sale $ (38,720) $ (25,946) $ (52,027) $ (48,381) Company's equity in net loss from unconsolidated joint ventures $ (21,997) $ (15,487) $ (31,262) $ (31,321)

Deferred Costs

Deferred Costs	9 Months Ended
	Sep. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred Costs	Deferred Costs Deferred costs as of September 30, 2022 and December 31, 2021 consisted of the following (in thousands): September 30, 2022 December 31, 2021 Deferred leasing costs $ 410,655 $ 400,419 Less: accumulated amortization (294,703) (275,924) Deferred costs, net $ 115,952 $ 124,495

Mortgages and Other Loans Payab

Mortgages and Other Loans Payable	9 Months Ended
	Sep. 30, 2022
Mortgages and Other Loans Payable
Mortgages and Other Loans Payable	Mortgages and Other Loans Payable The mortgages and other loans payable collateralized by the respective properties and assignment of leases or debt investments as of September 30, 2022 and December 31, 2021, respectively, were as follows (dollars in thousands): Property Current Maturity Final Maturity Date (1) Interest Rate (2) September 30, 2022 December 31, 2021 Fixed Rate Debt: 420 Lexington Avenue October 2024 October 2040 3.99% $ 284,492 $ 288,660 Landmark Square January 2027 January 2027 4.90% 100,000 100,000 485 Lexington Avenue February 2027 February 2027 4.25% 450,000 450,000 245 Park Avenue June 2027 June 2027 4.22% 1,712,750 — 100 Church Street — 200,212 1080 Amsterdam — 34,537 Total fixed rate debt $ 2,547,242 $ 1,073,409 Floating Rate Debt: 7 Dey / 185 Broadway (3) November 2022 November 2023 L+ 2.85% $ 210,148 $ 198,169 719 Seventh Avenue September 2023 September 2023 L+ 1.20% 50,000 50,000 690 Madison Avenue July 2024 July 2025 L+ 1.50% 60,000 60,000 100 Church Street June 2025 June 2027 S+ 4.98% 370,000 — 609 Fifth Avenue — 52,882 2017 Master Repurchase Agreement (4) — — Total floating rate debt $ 690,148 $ 361,051 Total fixed rate and floating rate debt $ 3,237,390 $ 1,434,460 Mortgages reclassed to liabilities related to assets held for sale — (34,537) Total mortgages and other loans payable $ 3,237,390 $ 1,399,923 Deferred financing costs, net of amortization (8,374) (5,537) Total mortgages and other loans payable, net $ 3,229,016 $ 1,394,386 (1) Reflects exercise of all available options. The ability to exercise extension options may be subject to certain tests based on the operating performance of the property. (2) Interest rate as of September 30, 2022, taking into account interest rate hedges in effect during the period. Floating rate debt is presented with the stated spread over the 30-day LIBOR ("L") or Term SOFR ("S"), unless otherwise specified. (3) This loan is a $225.0 million construction facility, with reductions in interest cost based on meeting certain conditions, and has an initial three year term with two one year extension options. Both one year extension options were exercised in October 2021 and 2022, respectively. Advances under the loan are subject to incurred costs and funded equity requirements. (4) The facility matured in June 2022 and the Company is in discussions with the lender on an extension. As of September 30, 2022, there was no outstanding balance on the facility. As of September 30, 2022 and December 31, 2021, the gross book value of the properties collateralizing the mortgages and other loans payable was approximately $3.8 billion and $2.1 billion, respectively. Master Repurchase Agreement The Company entered into a Master Repurchase Agreement, or MRA, known as the 2017 MRA, which provides us with the ability to sell certain mortgage investments with a simultaneous agreement to repurchase the same at a certain date or on demand. We seek to mitigate risks associated with our repurchase agreement by managing the credit quality of our assets, early repayments, interest rate volatility, liquidity, and market value. The margin call provisions under our repurchase facility permit valuation adjustments based on capital markets activity, and are not limited to collateral-specific credit marks. To monitor credit risk associated with our debt investments, our asset management team regularly reviews our investment portfolio and is in contact with our borrowers in order to monitor the collateral and enforce our rights as necessary. The risk associated with potential margin calls is further mitigated by our ability to collateralize the facility with additional assets from our portfolio of debt investments, our ability to satisfy margin calls with cash or cash equivalents and our access to additional liquidity. As of September 30, 2022, there have been no margin calls on the 2017 MRA. In April 2018, we increased the maximum facility capacity from $300.0 million to $400.0 million. The facility bore interest on a floating rate basis at a spread to 30-day LIBOR based on the pledged collateral and advance rate. The facility matured in June 2022 and the Company is in discussions with the lender on an extension. As of September 30, 2022, the facility had no outstanding balance. 2021 Credit Facility In December 2021, we entered into an amended and restated credit facility, referred to as the 2021 credit facility, that was previously amended by the Company in November 2017, or the 2017 credit facility, and was originally entered into by the Company in November 2012, or the 2012 credit facility. As of September 30, 2022, the 2021 credit facility consisted of a $1.25 billion revolving credit facility, a $1.05 billion term loan (or "Term Loan A"), and a $200.0 million term loan (or "Term Loan B") with maturity dates of May 15, 2026, May 15, 2027, and November 21, 2024, respectively. The revolving credit facility has two six-month, as-of-right extension options to May 15, 2027. We also have an option, subject to customary conditions, to increase the capacity of the credit facility to $4.5 billion at any time prior to the maturity dates for the revolving credit facility and term loans without the consent of existing lenders, by obtaining additional commitments from our existing lenders and other financial institutions. As of September 30, 2022, the 2021 credit facility bore interest at a spread over adjusted Term SOFR plus 10 basis points with an interest period of one or three months, as we may elect, ranging from (i) 72.5 basis points to 140 basis points for loans under the revolving credit facility, (ii) 80 basis points to 160 basis points for loans under Term Loan A, and (iii) 85 basis points to 165 basis points for loans under Term Loan B, in each case based on the credit rating assigned to the senior unsecured long term indebtedness of the Company. In instances where there are either only two ratings available or where there are more than two and the difference between them is one rating category, the applicable rating shall be the highest rating. In instances where there are more than two ratings and the difference between the highest and the lowest is two or more rating categories, then the applicable rating used is the average of the highest two, rounded down if the average is not a recognized category. As of September 30, 2022, the applicable spread over adjusted Term SOFR plus 10 basis points was 105 basis points for the revolving credit facility, 120 basis points for Term Loan A, and 125 basis points for Term Loan B. 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 the Company. As of September 30, 2022, the facility fee was 25 basis points. As of September 30, 2022, we had $8.5 million of outstanding letters of credit, $450.0 million drawn under the revolving credit facility and $1.25 billion outstanding under the term loan facilities, with total undrawn capacity of $800.0 million under the 2021 credit facility. As of September 30, 2022 and December 31, 2021, the revolving credit facility had a carrying value of $442.8 million and $381.3 million, respectively, net of deferred financing costs. As of September 30, 2022 and December 31, 2021, the term loan facilities had a carrying value of $1.2 billion and $1.2 billion, respectively, net of deferred financing costs. The Company and the Operating Partnership are borrowers jointly and severally obligated under the 2021 credit facility. The 2021 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 September 30, 2022 and December 31, 2021, respectively, by scheduled maturity date (dollars in thousands): Issuance September 30, 2022 September 30, 2022 December 31, Interest Rate (1) Initial Term Maturity Date October 5, 2017 (2) $ 500,000 $ 499,996 $ 499,913 3.25 % 5 October 2022 December 17, 2015 (3) 100,000 100,000 100,000 4.27 % 10 December 2025 November 15, 2012 — — 301,002 — % 10 December 2022 $ 600,000 $ 599,996 $ 900,915 Deferred financing costs, net — (334) (1,607) $ 600,000 $ 599,662 $ 899,308 (1) Interest rate as of September 30, 2022, taking into account interest rate hedges in effect during the period. (2) Issued by the Operating Partnership with the Company as the guarantor. In October 2022, these notes were repaid at maturity. (3) Issued by the Company and the Operating Partnership as co-obligors. Restrictive Covenants The terms of the 2021 credit facility 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 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 September 30, 2022 and December 31, 2021, 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 floating rate of 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, the 2021 credit facility, trust preferred securities, senior unsecured notes and our share of joint venture debt as of September 30, 2022, including as-of-right extension options, were as follows (in thousands): Scheduled Principal Revolving Unsecured Term Loans Trust Senior Total Joint Remaining 2022 $ 1,428 $ 210,148 $ — $ — $ — $ 500,000 $ 711,576 $ 412,928 2023 5,827 50,000 — — — — 55,827 750,513 2024 4,488 332,749 — 200,000 — — 537,237 893,994 2025 — 370,000 — — — 100,000 470,000 1,540,234 2026 — — — — — — — 107,137 Thereafter — 2,262,750 450,000 1,050,000 100,000 — 3,862,750 2,429,821 $ 11,743 $ 3,225,647 $ 450,000 $ 1,250,000 $ 100,000 $ 600,000 $ 5,637,390 $ 6,134,627 Consolidated interest expense, excluding capitalized interest, was comprised of the following (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Interest expense before capitalized interest $ 40,553 $ 34,054 $ 105,165 $ 112,423 Interest on financing leases 1,099 1,229 3,453 4,215 Interest capitalized (19,659) (20,141) (55,952) (58,395) Interest income (169) (335) (812) (1,088) Interest expense, net $ 21,824 $ 14,807 $ 51,854 $ 57,155

Corporate Indebtedness

Corporate Indebtedness	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Corporate Indebtedness	Mortgages and Other Loans Payable The mortgages and other loans payable collateralized by the respective properties and assignment of leases or debt investments as of September 30, 2022 and December 31, 2021, respectively, were as follows (dollars in thousands): Property Current Maturity Final Maturity Date (1) Interest Rate (2) September 30, 2022 December 31, 2021 Fixed Rate Debt: 420 Lexington Avenue October 2024 October 2040 3.99% $ 284,492 $ 288,660 Landmark Square January 2027 January 2027 4.90% 100,000 100,000 485 Lexington Avenue February 2027 February 2027 4.25% 450,000 450,000 245 Park Avenue June 2027 June 2027 4.22% 1,712,750 — 100 Church Street — 200,212 1080 Amsterdam — 34,537 Total fixed rate debt $ 2,547,242 $ 1,073,409 Floating Rate Debt: 7 Dey / 185 Broadway (3) November 2022 November 2023 L+ 2.85% $ 210,148 $ 198,169 719 Seventh Avenue September 2023 September 2023 L+ 1.20% 50,000 50,000 690 Madison Avenue July 2024 July 2025 L+ 1.50% 60,000 60,000 100 Church Street June 2025 June 2027 S+ 4.98% 370,000 — 609 Fifth Avenue — 52,882 2017 Master Repurchase Agreement (4) — — Total floating rate debt $ 690,148 $ 361,051 Total fixed rate and floating rate debt $ 3,237,390 $ 1,434,460 Mortgages reclassed to liabilities related to assets held for sale — (34,537) Total mortgages and other loans payable $ 3,237,390 $ 1,399,923 Deferred financing costs, net of amortization (8,374) (5,537) Total mortgages and other loans payable, net $ 3,229,016 $ 1,394,386 (1) Reflects exercise of all available options. The ability to exercise extension options may be subject to certain tests based on the operating performance of the property. (2) Interest rate as of September 30, 2022, taking into account interest rate hedges in effect during the period. Floating rate debt is presented with the stated spread over the 30-day LIBOR ("L") or Term SOFR ("S"), unless otherwise specified. (3) This loan is a $225.0 million construction facility, with reductions in interest cost based on meeting certain conditions, and has an initial three year term with two one year extension options. Both one year extension options were exercised in October 2021 and 2022, respectively. Advances under the loan are subject to incurred costs and funded equity requirements. (4) The facility matured in June 2022 and the Company is in discussions with the lender on an extension. As of September 30, 2022, there was no outstanding balance on the facility. As of September 30, 2022 and December 31, 2021, the gross book value of the properties collateralizing the mortgages and other loans payable was approximately $3.8 billion and $2.1 billion, respectively. Master Repurchase Agreement The Company entered into a Master Repurchase Agreement, or MRA, known as the 2017 MRA, which provides us with the ability to sell certain mortgage investments with a simultaneous agreement to repurchase the same at a certain date or on demand. We seek to mitigate risks associated with our repurchase agreement by managing the credit quality of our assets, early repayments, interest rate volatility, liquidity, and market value. The margin call provisions under our repurchase facility permit valuation adjustments based on capital markets activity, and are not limited to collateral-specific credit marks. To monitor credit risk associated with our debt investments, our asset management team regularly reviews our investment portfolio and is in contact with our borrowers in order to monitor the collateral and enforce our rights as necessary. The risk associated with potential margin calls is further mitigated by our ability to collateralize the facility with additional assets from our portfolio of debt investments, our ability to satisfy margin calls with cash or cash equivalents and our access to additional liquidity. As of September 30, 2022, there have been no margin calls on the 2017 MRA. In April 2018, we increased the maximum facility capacity from $300.0 million to $400.0 million. The facility bore interest on a floating rate basis at a spread to 30-day LIBOR based on the pledged collateral and advance rate. The facility matured in June 2022 and the Company is in discussions with the lender on an extension. As of September 30, 2022, the facility had no outstanding balance. 2021 Credit Facility In December 2021, we entered into an amended and restated credit facility, referred to as the 2021 credit facility, that was previously amended by the Company in November 2017, or the 2017 credit facility, and was originally entered into by the Company in November 2012, or the 2012 credit facility. As of September 30, 2022, the 2021 credit facility consisted of a $1.25 billion revolving credit facility, a $1.05 billion term loan (or "Term Loan A"), and a $200.0 million term loan (or "Term Loan B") with maturity dates of May 15, 2026, May 15, 2027, and November 21, 2024, respectively. The revolving credit facility has two six-month, as-of-right extension options to May 15, 2027. We also have an option, subject to customary conditions, to increase the capacity of the credit facility to $4.5 billion at any time prior to the maturity dates for the revolving credit facility and term loans without the consent of existing lenders, by obtaining additional commitments from our existing lenders and other financial institutions. As of September 30, 2022, the 2021 credit facility bore interest at a spread over adjusted Term SOFR plus 10 basis points with an interest period of one or three months, as we may elect, ranging from (i) 72.5 basis points to 140 basis points for loans under the revolving credit facility, (ii) 80 basis points to 160 basis points for loans under Term Loan A, and (iii) 85 basis points to 165 basis points for loans under Term Loan B, in each case based on the credit rating assigned to the senior unsecured long term indebtedness of the Company. In instances where there are either only two ratings available or where there are more than two and the difference between them is one rating category, the applicable rating shall be the highest rating. In instances where there are more than two ratings and the difference between the highest and the lowest is two or more rating categories, then the applicable rating used is the average of the highest two, rounded down if the average is not a recognized category. As of September 30, 2022, the applicable spread over adjusted Term SOFR plus 10 basis points was 105 basis points for the revolving credit facility, 120 basis points for Term Loan A, and 125 basis points for Term Loan B. 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 the Company. As of September 30, 2022, the facility fee was 25 basis points. As of September 30, 2022, we had $8.5 million of outstanding letters of credit, $450.0 million drawn under the revolving credit facility and $1.25 billion outstanding under the term loan facilities, with total undrawn capacity of $800.0 million under the 2021 credit facility. As of September 30, 2022 and December 31, 2021, the revolving credit facility had a carrying value of $442.8 million and $381.3 million, respectively, net of deferred financing costs. As of September 30, 2022 and December 31, 2021, the term loan facilities had a carrying value of $1.2 billion and $1.2 billion, respectively, net of deferred financing costs. The Company and the Operating Partnership are borrowers jointly and severally obligated under the 2021 credit facility. The 2021 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 September 30, 2022 and December 31, 2021, respectively, by scheduled maturity date (dollars in thousands): Issuance September 30, 2022 September 30, 2022 December 31, Interest Rate (1) Initial Term Maturity Date October 5, 2017 (2) $ 500,000 $ 499,996 $ 499,913 3.25 % 5 October 2022 December 17, 2015 (3) 100,000 100,000 100,000 4.27 % 10 December 2025 November 15, 2012 — — 301,002 — % 10 December 2022 $ 600,000 $ 599,996 $ 900,915 Deferred financing costs, net — (334) (1,607) $ 600,000 $ 599,662 $ 899,308 (1) Interest rate as of September 30, 2022, taking into account interest rate hedges in effect during the period. (2) Issued by the Operating Partnership with the Company as the guarantor. In October 2022, these notes were repaid at maturity. (3) Issued by the Company and the Operating Partnership as co-obligors. Restrictive Covenants The terms of the 2021 credit facility 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 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 September 30, 2022 and December 31, 2021, 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 floating rate of 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, the 2021 credit facility, trust preferred securities, senior unsecured notes and our share of joint venture debt as of September 30, 2022, including as-of-right extension options, were as follows (in thousands): Scheduled Principal Revolving Unsecured Term Loans Trust Senior Total Joint Remaining 2022 $ 1,428 $ 210,148 $ — $ — $ — $ 500,000 $ 711,576 $ 412,928 2023 5,827 50,000 — — — — 55,827 750,513 2024 4,488 332,749 — 200,000 — — 537,237 893,994 2025 — 370,000 — — — 100,000 470,000 1,540,234 2026 — — — — — — — 107,137 Thereafter — 2,262,750 450,000 1,050,000 100,000 — 3,862,750 2,429,821 $ 11,743 $ 3,225,647 $ 450,000 $ 1,250,000 $ 100,000 $ 600,000 $ 5,637,390 $ 6,134,627 Consolidated interest expense, excluding capitalized interest, was comprised of the following (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Interest expense before capitalized interest $ 40,553 $ 34,054 $ 105,165 $ 112,423 Interest on financing leases 1,099 1,229 3,453 4,215 Interest capitalized (19,659) (20,141) (55,952) (58,395) Interest income (169) (335) (812) (1,088) Interest expense, net $ 21,824 $ 14,807 $ 51,854 $ 57,155

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2022
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Cleaning/ Security/ Messenger and Restoration Services Alliance Building Services, or Alliance, and its affiliates, which provide services to certain properties owned by us, were previously partially owned by Gary Green, a son of Stephen L. Green, who serves as a member and as the chairman emeritus of our Board of Directors. Alliance’s affiliates include First Quality Maintenance, L.P., or First Quality, Classic Security LLC, Bright Star Couriers LLC and Onyx Restoration Works, and provide cleaning, extermination, security, messenger, and restoration services, respectively. 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 the profit participation, which is included in Other income on the consolidated statements of operations, was $0.0 million and $1.4 million for the three and nine months ended September 30, 2022, respectively, and $0.4 million and $1.1 million for the three and nine months ended September 30, 2021, respectively. We also recorded expenses, inclusive of capitalized expenses, of $0.0 million and $8.6 million for the three and nine months ended September 30, 2022, respectively, and $3.8 million and $9.4 million for the three and nine months ended September 30, 2021, 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 this entity of $0.1 million and $0.5 million for the three and nine months ended September 30, 2022, respectively. We received management fees from this entity of $0.2 million and $0.5 million for the three and nine months ended September 30, 2021, respectively. One Vanderbilt Avenue Investment In December 2016, we entered into agreements with entities owned and controlled by our Chairman and CEO, Marc Holliday, and our President, Andrew Mathias, pursuant to which they agreed to make an investment in our One Vanderbilt project (inclusive of the property and Summit One Vanderbilt) at the appraised fair market value for the interests acquired. This investment entitles these entities to receive approximately 1.50% - 1.80% and 1.00% - 1.20%, respectively, of any profits realized by the Company from its One Vanderbilt project in excess of the Company’s capital contributions. The entities have no right to any return of capital. Accordingly, subject to previously disclosed repurchase rights, these interests will have no value and will not entitle these entities to any amounts (other than limited distributions to cover tax liabilities incurred) unless and until the Company has received distributions from the One Vanderbilt project in excess of the Company’s aggregate investment in the project. In the event that the Company does not realize a profit on its investment in the project (or would not realize a profit based on the value at the time the interests are repurchased), the entities owned and controlled by Messrs. Holliday and Mathias will lose the entire amount of their investment. The entities owned and controlled by Messrs. Holliday and Mathias paid $1.4 million and $1.0 million, respectively, which equaled the fair market value of the interests acquired as of the date the investment agreements were entered into as determined by an independent third party appraisal that we obtained. Messrs. Holliday and Mathias have the right to tender their interests in the project upon stabilization (50% within three years after stabilization and 100% three years or more after stabilization). In addition, the agreement calls for us to repurchase these interests in the event of a sale of One Vanderbilt or a transactional change of control of the Company. We also have the right to repurchase these interests on the 7-year anniversary of the stabilization of the project or upon the occurrence of certain separation events prior to the stabilization of the project relating to each of Messrs. Holliday’s and Mathias’s continued service with us. The price paid upon a tender of the interests will equal the liquidation value of the interests at the time, with the value being based on the project's sale price, if applicable, or fair market value as determined by an independent third party appraiser. In 2022, stabilization of the property (but not Summit One Vanderbilt) was achieved. Therefore, Messrs. Holiday and Mathias exercised their rights to tender 50% of their interests in the property (but not Summit One Vanderbilt) for liquidation values of $17.9 million and $11.9 million, respectively, which were paid in July 2022. One Vanderbilt Avenue Leases In November 2018, we entered into a lease agreement with the One Vanderbilt Avenue joint venture covering certain floors at the property. In March 2021, the lease commenced and we relocated our corporate headquarters to the leased space. For the three and nine months ended September 30, 2022, we recorded $0.7 million and $2.2 million, respectively, of rent expense under the lease. For the three and nine months ended September 30, 2021, we recorded $0.7 million and $1.6 million, respectively, of rent expense under the lease. Additionally, in June 2021, we, through a wholly-owned subsidiary, entered into a lease agreement with the One Vanderbilt Avenue joint venture for Summit One Vanderbilt, which commenced in October 2021. For the three and nine months ended September 30, 2022, we recorded $8.3 million and $26.0 million, respectively, of rent expense under the lease, including percentage rent, of which $5.5 million and $17.4 million, respectively, was recognized as income as a component of Equity in net loss from unconsolidated joint ventures in our consolidated statements of operations. Other We are entitled to receive fees for providing management, leasing, construction supervision and asset management services to certain of our joint ventures as further described in Note 6, "Investments in Unconsolidated Joint Ventures." Amounts due from joint ventures and related parties as of September 30, 2022 and December 31, 2021 consisted of the following (in thousands): September 30, 2022 December 31, 2021 Due from joint ventures $ 26,539 $ 28,204 Other 748 1,204 Related party receivables $ 27,287 $ 29,408

Noncontrolling Interests on the

Noncontrolling Interests on the Company's Consolidated Financial Statements	9 Months Ended
	Sep. 30, 2022
Noncontrolling Interest [Abstract]
Noncontrolling Interests on the Company's Consolidated Financial Statements	Noncontrolling Interests on the Company's Consolidated Financial StatementsNoncontrolling 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 September 30, 2022 and December 31, 2021, the noncontrolling interest unit holders owned 5.52%, or 3,759,073 units, and 5.57%, or 3,781,565 units, of the Operating Partnership, respectively, inclusive of retroactive adjustments to reflect the reverse stock split effectuated by SL Green in January 2022. As of September 30, 2022, 3,759,073 shares of our common stock were reserved for issuance upon the 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 our common stock at the end of the reporting period. Below is a summary of the activity relating to the noncontrolling interests in the Operating Partnership for the nine months ended September 30, 2022 and the twelve months ended December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Balance at beginning of period $ 344,252 $ 358,262 Distributions (12,635) (15,749) Issuance of common units 16,408 18,678 Redemption and conversion of common units (35,316) (53,289) Net (loss) income (1,831) 25,457 Accumulated other comprehensive income allocation 6,404 1,042 Fair value adjustment (23,539) 9,851 Balance at end of period $ 293,743 $ 344,252 Preferred Units of Limited Partnership Interest in the Operating Partnership Below is a summary of the preferred units of limited partnership interest in the Operating Partnership as of September 30, 2022: Issuance Stated Distribution Rate Number of Units Authorized Number of Units Issued Number of Units Outstanding Annual Dividend Per Unit (1) Liquidation Preference Per Unit (2) Conversion Price Per Unit (3) Date of Issuance Series A (4) 3.50 % 109,161 109,161 109,161 $ 35.0000 $ 1,000.00 $ — August 2015 Series F 7.00 % 60 60 60 70.0000 1,000.00 29.12 January 2007 Series K 3.50 % 700,000 563,954 341,677 0.8750 25.00 134.67 August 2014 Series L 4.00 % 500,000 378,634 372,634 1.0000 25.00 — August 2014 Series P 4.00 % 200,000 200,000 200,000 1.0000 25.00 — July 2015 Series Q 3.50 % 268,000 268,000 268,000 0.8750 25.00 148.95 July 2015 Series R 3.50 % 400,000 400,000 400,000 0.8750 25.00 154.89 August 2015 Series S 4.00 % 1,077,280 1,077,280 1,077,280 1.0000 25.00 — August 2015 Series V 3.50 % 40,000 40,000 40,000 0.8750 25.00 — May 2019 Series W (5) (6) 1 1 1 (6) (6) (6) January 2020 (1) Dividends are cumulative, subject to certain provisions. (2) Units are redeemable at any time at par for cash at the option of the unit holder unless otherwise specified. (3) If applicable, 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) the amount shown in the table. (4) Issued through a consolidated subsidiary. The units are convertible on a one-for-one basis, into the Series B Preferred Units of limited partnership interest, or the Subsidiary Series B Preferred Units. The Subsidiary Series B Preferred Units can be converted at any time, at the option of the unitholder, into a number of common stock equal to 6.71348 shares of common stock for each Subsidiary Series B Preferred Unit. As of September 30, 2022, no Subsidiary Series B Preferred Units have been issued. (5) The Series W preferred unit was issued in January 2020 in exchange for the then-outstanding Series O preferred unit. The holder of the Series W preferred unit is entitled to quarterly dividends in an amount calculated as (i) 1,350 multiplied by (ii) the current distribution per common unit of limited partnership in SL Green Operating Partnership. The holder has the right to require the Operating Partnership to repurchase the Series W unit for cash, or convert the Series W unit for Class B units, in each case at a price that is determined based on the closing price of the Company's common stock at the time such right is exercised. The unit's liquidation preference is the fair market value of the unit plus accrued distributions at the time of a liquidation event. Below is a summary of the activity relating to the preferred units in the Operating Partnership for the nine months ended September 30, 2022 and the twelve months ended December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Balance at beginning of period $ 196,075 $ 202,169 Issuance of preferred units — — Redemption of preferred units (17,967) (6,040) Dividends paid on preferred units (4,749) (6,760) Accrued dividends on preferred units 4,584 6,706 Balance at end of period $ 177,943 $ 196,075

Stockholders' Equity of the Com

Stockholders' Equity of the Company	9 Months Ended
	Sep. 30, 2022
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 September 30, 2022, 64,315,581 shares of common stock and no shares of excess stock were issued and outstanding. On December 2, 2021, our Board of Directors declared an ordinary dividend of $0.3108 per share and a special dividend of $2.4392 per share (together, "the Total Dividend"). The Total Dividend was paid on January 18, 2022 to shareholders of record at the close of business on December 15, 2021 ("the Record Date"). Shareholders had the opportunity to elect to receive the Total Dividend in the form of all cash or all stock, subject to proration if either option was oversubscribed. As a result of the elections made, the cash option was oversubscribed and was prorated. Shareholders who elected to receive cash received, for each share of common stock they owned as of the Record Date, approximately $0.3976 in cash and 0.0295 shares of common stock. Shareholders who elected to receive shares received, for each share of common stock they owned as of the Record Date, approximately 0.0345 shares of common stock. The number of shares issued was calculated based on the volume weighted average trading price of SLG's common stock between January 5-7, 2022 of $79.71 per share. To mitigate the dilutive impact of the common stock issued in the special dividend, the Board of Directors also authorized a reverse stock split, which was effective after markets closed on January 21, 2022. On January 10, 2022, a committee of the Board of Directors calculated the ratio for the reverse stock split of our issued and outstanding shares of common stock as 1.03060-for-1. After the issuance of the dividend and the completion of the reverse stock split, the number of shares of our common stock outstanding was equivalent to the number of total shares outstanding on the Record Date (not including any issuances or repurchases that occurred following the Record Date, as well as any fractional shares that would have been issued but for which cash-in-lieu was paid). However, on a relative basis, some individual shareholders may have more shares of SLG’s common stock, and some individual shareholders may have fewer shares of our common stock, depending on their individual elections to receive cash or stock and as a result of the cash option being oversubscribed. All share-related references and measurements including the number of shares outstanding, share prices, number of shares repurchased, earnings per share, dividends per share, and share-based compensation awards, have been retroactively adjusted to reflect the reverse stock split for all periods presented in this Quarterly Report on Form 10-Q. Share Repurchase Program In August 2016, our Board of Directors approved a $1.0 billion share repurchase program under which we can buy shares of our common stock. The Board of Directors has since authorized five separate $500.0 million increases to the size of the share repurchase program in the fourth quarter of 2017, second quarter of 2018, fourth quarter of 2018, fourth quarter of 2019, and fourth quarter of 2020 bringing the total program size to $3.5 billion. As of September 30, 2022, share repurchases executed under the program, excluding the redemption of OP units, were as follows: Period Shares repurchased Average price paid per share Cumulative number of shares repurchased as part of the repurchase plan or programs Year ended 2017 7,865,206 $107.81 7,865,206 Year ended 2018 9,187,480 $102.06 17,052,686 Year ended 2019 4,333,260 $88.69 21,385,946 Year ended 2020 8,276,032 $64.30 29,661,978 Year ended 2021 4,474,649 $75.44 34,136,627 Nine months September 30, 2022 1,971,092 $76.69 36,107,719 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 any time, in whole or from time to time in part, at par for cash. 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 ("DRSPP") In February 2021, 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 our common stock under the DRSPP. The DRSPP commenced on September 24, 2001. The following table summarizes SL Green common stock issued, and proceeds received from dividend reinvestments and/or stock purchases under the DRSPP for the three and nine months ended September 30, 2022 and 2021, respectively (dollars in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Shares of common stock issued 2,933 1,944 5,827 8,770 Dividend reinvestments/stock purchases under the DRSPP $ 140 $ 146 $ 339 $ 613 Earnings per Share We use the two-class method of computing earnings per share (“EPS”), which is an earnings allocation formula that determines EPS for common stock and any participating securities according to dividends declared (whether paid or unpaid). Under the two-class method, basic EPS is computed by dividing the income available to common stockholders by the weighted-average number of common stock shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur from share equivalent activity. SL Green's earnings per share for the three and nine months ended September 30, 2022 and 2021 are computed as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Numerator 2022 2021 2022 2021 Basic Earnings: Income (loss) attributable to SL Green common stockholders $ 7,377 $ 388,205 $ (28,748) $ 486,073 Less: distributed earnings allocated to participating securities (505) (357) (1,516) (1,071) Less: undistributed earnings allocated to participating securities — (1,977) — (1,790) Net income (loss) attributable to SL Green common stockholders (numerator for basic earnings per share) $ 6,872 $ 385,871 $ (30,264) $ 483,212 Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares 505 357 (484) 1,071 Add back: undistributed earnings allocated to participating securities — 1,977 — 1,790 Add back: effect of dilutive securities (redemption of units to common shares) 491 22,683 (1,831) 28,489 Net income (loss) attributable to SL Green common stockholders (numerator for diluted earnings per share) $ 7,868 $ 410,888 $ (32,579) $ 514,562 Three Months Ended September 30, Nine Months Ended September 30, Denominator 2022 2021 2022 2021 Basic Shares: Weighted average common stock outstanding 63,949 64,856 63,971 66,248 Effect of Dilutive Securities: Operating Partnership units redeemable for common shares 4,088 3,834 4,104 4,024 Stock-based compensation plans 860 806 1,052 676 Contingently issuable shares — — 122 101 Diluted weighted average common stock outstanding 68,897 69,496 69,249 71,049 The Company has excluded 621,134 and 517,574 common stock equivalents from the calculation of diluted shares outstanding for the three and nine months ended September 30, 2022, respectively, as they were anti-dilutive. The Company has excluded 969,631 and 1,032,243 common stock equivalents from the calculation of diluted shares outstanding for the three and nine months ended September 30, 2021, respectively, as they were anti-dilutive. Net income (loss) allocated to the preferred unitholders and common unitholders reflects their pro rata share of net income (loss) and distributions. All unit-related references and measurements including the number of units outstanding and earnings per unit have been retroactively adjusted to reflect the reverse stock split effectuated by SL Green’s Board of Directors in January 2021 for all periods presented in this Quarterly Report on Form 10-Q. Limited Partner Units As of September 30, 2022, limited partners other than SL Green owned 5.52%, or 3,759,073 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 and nine months ended September 30, 2022 and 2021, respectively, are computed as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Numerator 2022 2021 2022 2021 Basic Earnings: Net income (loss) attributable to SLGOP common unitholders (numerator for diluted earnings per unit) $ 7,868 $ 410,888 $ (30,579) $ 514,562 Less: distributed earnings allocated to participating securities (505) (357) (1,516) (1,071) Less: undistributed earnings allocated to participating securities — (1,977) — (1,790) Net income (loss) attributable to SLGOP common unitholders (numerator for basic earnings per unit) $ 7,363 $ 408,554 $ (32,095) $ 511,701 Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares 505 357 (484) 1,071 Add back: undistributed earnings allocated to participating securities — 1,977 — 1,790 Net income (loss) attributable to SLGOP common unitholders (numerator for diluted earnings per unit) $ 7,868 $ 410,888 $ (32,579) $ 514,562 Three Months Ended September 30, Nine Months Ended September 30, Denominator 2022 2021 2022 2021 Basic units: Weighted average common units outstanding 68,037 68,690 68,075 70,272 Effect of Dilutive Securities: Stock-based compensation plans 860 806 1,052 676 Contingently issuable units — — 122 101 Diluted weighted average common units outstanding 68,897 69,496 69,249 71,049 The Operating Partnership has excluded 621,134 and 517,574 common unit equivalents from the diluted units outstanding for the three and nine months ended September 30, 2022, respectively, as they were anti-dilutive. The Operating Partnership has excluded 969,631 and 1,032,243 common unit equivalents from the diluted units outstanding for the three and nine months ended September 30, 2021, respectively, as they were anti-dilutive. The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of September 30, 2022 (in thousands): Net unrealized gain (loss) on derivative instruments ( 1 ) SL Green’s share of joint venture net unrealized gain (loss) on derivative instruments ( 2 ) Net unrealized gain on marketable securities Total Balance at December 31, 2021 $ (25,881) $ (21,994) $ 1,117 $ (46,758) Other comprehensive gain (loss) before reclassifications 78,865 21,671 (609) 99,927 Amounts reclassified from accumulated other comprehensive income 2,526 1,879 — 4,405 Balance at September 30, 2022 $ 55,510 $ 1,556 $ 508 $ 57,574 (1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of operations. As of September 30, 2022 and December 31, 2021, the deferred net gains from these terminated hedges, which is included in accumulated other comprehensive income (loss) relating to net unrealized loss on derivative instruments, was $(0.5) million and $(0.6) million, respectively. (2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net loss from unconsolidated joint ventures in the respective consolidated statements of operations.

Partners' Capital of the Operat

Partners' Capital of the Operating Partnership	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
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 September 30, 2022, 64,315,581 shares of common stock and no shares of excess stock were issued and outstanding. On December 2, 2021, our Board of Directors declared an ordinary dividend of $0.3108 per share and a special dividend of $2.4392 per share (together, "the Total Dividend"). The Total Dividend was paid on January 18, 2022 to shareholders of record at the close of business on December 15, 2021 ("the Record Date"). Shareholders had the opportunity to elect to receive the Total Dividend in the form of all cash or all stock, subject to proration if either option was oversubscribed. As a result of the elections made, the cash option was oversubscribed and was prorated. Shareholders who elected to receive cash received, for each share of common stock they owned as of the Record Date, approximately $0.3976 in cash and 0.0295 shares of common stock. Shareholders who elected to receive shares received, for each share of common stock they owned as of the Record Date, approximately 0.0345 shares of common stock. The number of shares issued was calculated based on the volume weighted average trading price of SLG's common stock between January 5-7, 2022 of $79.71 per share. To mitigate the dilutive impact of the common stock issued in the special dividend, the Board of Directors also authorized a reverse stock split, which was effective after markets closed on January 21, 2022. On January 10, 2022, a committee of the Board of Directors calculated the ratio for the reverse stock split of our issued and outstanding shares of common stock as 1.03060-for-1. After the issuance of the dividend and the completion of the reverse stock split, the number of shares of our common stock outstanding was equivalent to the number of total shares outstanding on the Record Date (not including any issuances or repurchases that occurred following the Record Date, as well as any fractional shares that would have been issued but for which cash-in-lieu was paid). However, on a relative basis, some individual shareholders may have more shares of SLG’s common stock, and some individual shareholders may have fewer shares of our common stock, depending on their individual elections to receive cash or stock and as a result of the cash option being oversubscribed. All share-related references and measurements including the number of shares outstanding, share prices, number of shares repurchased, earnings per share, dividends per share, and share-based compensation awards, have been retroactively adjusted to reflect the reverse stock split for all periods presented in this Quarterly Report on Form 10-Q. Share Repurchase Program In August 2016, our Board of Directors approved a $1.0 billion share repurchase program under which we can buy shares of our common stock. The Board of Directors has since authorized five separate $500.0 million increases to the size of the share repurchase program in the fourth quarter of 2017, second quarter of 2018, fourth quarter of 2018, fourth quarter of 2019, and fourth quarter of 2020 bringing the total program size to $3.5 billion. As of September 30, 2022, share repurchases executed under the program, excluding the redemption of OP units, were as follows: Period Shares repurchased Average price paid per share Cumulative number of shares repurchased as part of the repurchase plan or programs Year ended 2017 7,865,206 $107.81 7,865,206 Year ended 2018 9,187,480 $102.06 17,052,686 Year ended 2019 4,333,260 $88.69 21,385,946 Year ended 2020 8,276,032 $64.30 29,661,978 Year ended 2021 4,474,649 $75.44 34,136,627 Nine months September 30, 2022 1,971,092 $76.69 36,107,719 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 any time, in whole or from time to time in part, at par for cash. 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 ("DRSPP") In February 2021, 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 our common stock under the DRSPP. The DRSPP commenced on September 24, 2001. The following table summarizes SL Green common stock issued, and proceeds received from dividend reinvestments and/or stock purchases under the DRSPP for the three and nine months ended September 30, 2022 and 2021, respectively (dollars in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Shares of common stock issued 2,933 1,944 5,827 8,770 Dividend reinvestments/stock purchases under the DRSPP $ 140 $ 146 $ 339 $ 613 Earnings per Share We use the two-class method of computing earnings per share (“EPS”), which is an earnings allocation formula that determines EPS for common stock and any participating securities according to dividends declared (whether paid or unpaid). Under the two-class method, basic EPS is computed by dividing the income available to common stockholders by the weighted-average number of common stock shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur from share equivalent activity. SL Green's earnings per share for the three and nine months ended September 30, 2022 and 2021 are computed as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Numerator 2022 2021 2022 2021 Basic Earnings: Income (loss) attributable to SL Green common stockholders $ 7,377 $ 388,205 $ (28,748) $ 486,073 Less: distributed earnings allocated to participating securities (505) (357) (1,516) (1,071) Less: undistributed earnings allocated to participating securities — (1,977) — (1,790) Net income (loss) attributable to SL Green common stockholders (numerator for basic earnings per share) $ 6,872 $ 385,871 $ (30,264) $ 483,212 Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares 505 357 (484) 1,071 Add back: undistributed earnings allocated to participating securities — 1,977 — 1,790 Add back: effect of dilutive securities (redemption of units to common shares) 491 22,683 (1,831) 28,489 Net income (loss) attributable to SL Green common stockholders (numerator for diluted earnings per share) $ 7,868 $ 410,888 $ (32,579) $ 514,562 Three Months Ended September 30, Nine Months Ended September 30, Denominator 2022 2021 2022 2021 Basic Shares: Weighted average common stock outstanding 63,949 64,856 63,971 66,248 Effect of Dilutive Securities: Operating Partnership units redeemable for common shares 4,088 3,834 4,104 4,024 Stock-based compensation plans 860 806 1,052 676 Contingently issuable shares — — 122 101 Diluted weighted average common stock outstanding 68,897 69,496 69,249 71,049 The Company has excluded 621,134 and 517,574 common stock equivalents from the calculation of diluted shares outstanding for the three and nine months ended September 30, 2022, respectively, as they were anti-dilutive. The Company has excluded 969,631 and 1,032,243 common stock equivalents from the calculation of diluted shares outstanding for the three and nine months ended September 30, 2021, respectively, as they were anti-dilutive. Net income (loss) allocated to the preferred unitholders and common unitholders reflects their pro rata share of net income (loss) and distributions. All unit-related references and measurements including the number of units outstanding and earnings per unit have been retroactively adjusted to reflect the reverse stock split effectuated by SL Green’s Board of Directors in January 2021 for all periods presented in this Quarterly Report on Form 10-Q. Limited Partner Units As of September 30, 2022, limited partners other than SL Green owned 5.52%, or 3,759,073 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 and nine months ended September 30, 2022 and 2021, respectively, are computed as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Numerator 2022 2021 2022 2021 Basic Earnings: Net income (loss) attributable to SLGOP common unitholders (numerator for diluted earnings per unit) $ 7,868 $ 410,888 $ (30,579) $ 514,562 Less: distributed earnings allocated to participating securities (505) (357) (1,516) (1,071) Less: undistributed earnings allocated to participating securities — (1,977) — (1,790) Net income (loss) attributable to SLGOP common unitholders (numerator for basic earnings per unit) $ 7,363 $ 408,554 $ (32,095) $ 511,701 Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares 505 357 (484) 1,071 Add back: undistributed earnings allocated to participating securities — 1,977 — 1,790 Net income (loss) attributable to SLGOP common unitholders (numerator for diluted earnings per unit) $ 7,868 $ 410,888 $ (32,579) $ 514,562 Three Months Ended September 30, Nine Months Ended September 30, Denominator 2022 2021 2022 2021 Basic units: Weighted average common units outstanding 68,037 68,690 68,075 70,272 Effect of Dilutive Securities: Stock-based compensation plans 860 806 1,052 676 Contingently issuable units — — 122 101 Diluted weighted average common units outstanding 68,897 69,496 69,249 71,049 The Operating Partnership has excluded 621,134 and 517,574 common unit equivalents from the diluted units outstanding for the three and nine months ended September 30, 2022, respectively, as they were anti-dilutive. The Operating Partnership has excluded 969,631 and 1,032,243 common unit equivalents from the diluted units outstanding for the three and nine months ended September 30, 2021, respectively, as they were anti-dilutive. The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of September 30, 2022 (in thousands): Net unrealized gain (loss) on derivative instruments ( 1 ) SL Green’s share of joint venture net unrealized gain (loss) on derivative instruments ( 2 ) Net unrealized gain on marketable securities Total Balance at December 31, 2021 $ (25,881) $ (21,994) $ 1,117 $ (46,758) Other comprehensive gain (loss) before reclassifications 78,865 21,671 (609) 99,927 Amounts reclassified from accumulated other comprehensive income 2,526 1,879 — 4,405 Balance at September 30, 2022 $ 55,510 $ 1,556 $ 508 $ 57,574 (1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of operations. As of September 30, 2022 and December 31, 2021, the deferred net gains from these terminated hedges, which is included in accumulated other comprehensive income (loss) relating to net unrealized loss on derivative instruments, was $(0.5) million and $(0.6) million, respectively. (2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net loss from unconsolidated joint ventures in the respective consolidated statements of operations.

Share-based Compensation

Share-based Compensation	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Share-based Compensation	Share-based Compensation We have share-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. The Fifth Amended and Restated 2005 Stock Option and Incentive Plan, or the 2005 Plan, was approved by the Company's Board of Directors in April 2022 and its stockholders in June 2022 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, cash-based awards and other equity-based awards. Subject to adjustments upon certain corporate transactions or events, awards with respect to up to a maximum of 32,210,000 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 2.59 Fungible Units per share subject to such awards, (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 0.84 fungible units per share subject to such awards, and (3) all other awards (e.g., 10-year stock options) counting as 1.0 fungible units per share subject to such awards. Awards granted under the 2005 Plan prior to the approval of the fifth amendment and restatement in June 2022 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 32,210,000 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 our 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 1, 2032, which is the tenth anniversary of the date that the 2005 Plan was most recently approved by the Company's stockholders. As of September 30, 2022, 6.3 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. Stock Options and Class O LTIP Units Options are granted with an exercise price at the fair market value of the Company's common stock on the date of grant and, subject to employment, generally expire five years or ten years from the date of grant, are not transferable other than on death, and generally vest in one year to five years commencing one year from the date of grant. We have also granted Class O LTIP Units, which are a class of LTIP Units in the Operating Partnership structured to provide economics similar to those of stock options. Class O LTIP Units, once vested, may be converted, at the election of the holder, into a number of common units of the Operating Partnership per Class O LTIP Unit determined by the increase in value of a share of the Company’s common stock at the time of conversion over a participation threshold, which equals the fair market value of a share of the Company’s common stock at the time of grant. Class O LTIP Units are entitled to distributions, subject to vesting, equal per unit to 10% of the per unit distributions paid with respect to the common units of the Operating Partnership. The fair value of each stock option or LTIP Unit granted is estimated on the date of grant using the Black-Scholes option pricing model based on historical information. There were no options granted during the nine months ended September 30, 2022 or the year ended December 31, 2021. A summary of the status of the Company's stock options as of September 30, 2022 and December 31, 2021, and changes during the nine months ended September 30, 2022 and year ended December 31, 2021 are as follows: September 30, 2022 December 31, 2021 Options Outstanding Weighted Average Options Outstanding Weighted Average Balance at beginning of period 394,089 $ 100.56 761,686 $ 105.76 Exercised — — (11,314) 72.30 Lapsed or canceled (80,609) 112.14 (356,283) 112.56 Balance at end of period 313,480 $ 97.59 394,089 $ 100.56 Options exercisable at end of period 313,480 $ 97.59 394,089 $ 100.56 The remaining weighted average contractual life of the options outstanding was 2.1 years and the remaining average contractual life of the options exercisable was 2.1 years. During the three and nine months ended September 30, 2022, we recognized no compensation expense related to options. During the three and nine months ended September 30, 2021, we recognized no compensation expense related to options. As of September 30, 2022, there was no unrecognized compensation cost related to unvested stock options. Restricted Shares Shares are granted to certain employees, including our executives, and vesting occurs upon the completion of a service period or our meeting established financial performance criteria. Vesting occurs at rates ranging from 15% to 35% once performance criteria are reached. A summary of the Company's restricted stock as of September 30, 2022 and December 31, 2021 and changes during the nine months ended September 30, 2022 and the year ended December 31, 2021, are as follows: September 30, 2022 December 31, 2021 Balance at beginning of period 3,459,363 3,337,545 Granted 259,015 141,515 Canceled (15,584) (19,697) Balance at end of period 3,702,794 3,459,363 Vested during the period 118,255 122,759 Compensation expense recorded $ 7,083,717 $ 8,497,054 Total fair value of restricted stock granted during the period $ 14,807,004 $ 9,214,531 The fair value of restricted stock that vested during the nine months ended September 30, 2022 and the year ended December 31, 2021 was $9.7 million and $11.3 million, respectively. As of September 30, 2022, there was $13.6 million of total unrecognized compensation cost related to restricted stock, which is expected to be recognized over a weighted average period of 1.9 years. We granted LTIP Units, which include bonus, time-based and performance-based awards, with a fair value of $40.6 million and $55.0 million as of September 30, 2022 and December 31, 2021, respectively. The grant date fair value of the LTIP Unit awards was calculated in accordance with ASC 718. A third party consultant determined that the fair value of the LTIP Units has a discount to our 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 September 30, 2022, there was $57.5 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 1.6 years. During the three and nine months ended September 30, 2022, we recorded compensation expense related to bonus, time-based and performance based awards of $10.1 million and $30.5 million, respectively. During the three and nine months ended September 30, 2021, we recorded compensation expense related to bonus, time-based and performance based awards of $9.1 million and $27.3 million, respectively. For the three and nine months ended September 30, 2022, $0.5 million and $1.4 million, respectively, was capitalized to assets associated with compensation expense related to our long-term compensation plans, restricted stock and stock options. For the three and nine months ended September 30, 2021, $0.5 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. 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 the 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 our 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 nine months ended September 30, 2022, 23,268 phantom stock units and 9,416 shares of common stock were issued to our Board of Directors. We recorded compensation expense of $0.2 million and $2.4 million during the three and nine months ended September 30, 2022, respectively, related to the Deferred Compensation Plan. We recorded compensation expense of $0.1 million and $2.2 million during the three and nine months ended September 30, 2021, respectively, related to the Deferred Compensation Plan. As of September 30, 2022, there were 188,470 phantom stock units outstanding pursuant to our Non-Employee Director's Deferral Program. Employee Stock Purchase Plan

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	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 September 30, 2022, 64,315,581 shares of common stock and no shares of excess stock were issued and outstanding. On December 2, 2021, our Board of Directors declared an ordinary dividend of $0.3108 per share and a special dividend of $2.4392 per share (together, "the Total Dividend"). The Total Dividend was paid on January 18, 2022 to shareholders of record at the close of business on December 15, 2021 ("the Record Date"). Shareholders had the opportunity to elect to receive the Total Dividend in the form of all cash or all stock, subject to proration if either option was oversubscribed. As a result of the elections made, the cash option was oversubscribed and was prorated. Shareholders who elected to receive cash received, for each share of common stock they owned as of the Record Date, approximately $0.3976 in cash and 0.0295 shares of common stock. Shareholders who elected to receive shares received, for each share of common stock they owned as of the Record Date, approximately 0.0345 shares of common stock. The number of shares issued was calculated based on the volume weighted average trading price of SLG's common stock between January 5-7, 2022 of $79.71 per share. To mitigate the dilutive impact of the common stock issued in the special dividend, the Board of Directors also authorized a reverse stock split, which was effective after markets closed on January 21, 2022. On January 10, 2022, a committee of the Board of Directors calculated the ratio for the reverse stock split of our issued and outstanding shares of common stock as 1.03060-for-1. After the issuance of the dividend and the completion of the reverse stock split, the number of shares of our common stock outstanding was equivalent to the number of total shares outstanding on the Record Date (not including any issuances or repurchases that occurred following the Record Date, as well as any fractional shares that would have been issued but for which cash-in-lieu was paid). However, on a relative basis, some individual shareholders may have more shares of SLG’s common stock, and some individual shareholders may have fewer shares of our common stock, depending on their individual elections to receive cash or stock and as a result of the cash option being oversubscribed. All share-related references and measurements including the number of shares outstanding, share prices, number of shares repurchased, earnings per share, dividends per share, and share-based compensation awards, have been retroactively adjusted to reflect the reverse stock split for all periods presented in this Quarterly Report on Form 10-Q. Share Repurchase Program In August 2016, our Board of Directors approved a $1.0 billion share repurchase program under which we can buy shares of our common stock. The Board of Directors has since authorized five separate $500.0 million increases to the size of the share repurchase program in the fourth quarter of 2017, second quarter of 2018, fourth quarter of 2018, fourth quarter of 2019, and fourth quarter of 2020 bringing the total program size to $3.5 billion. As of September 30, 2022, share repurchases executed under the program, excluding the redemption of OP units, were as follows: Period Shares repurchased Average price paid per share Cumulative number of shares repurchased as part of the repurchase plan or programs Year ended 2017 7,865,206 $107.81 7,865,206 Year ended 2018 9,187,480 $102.06 17,052,686 Year ended 2019 4,333,260 $88.69 21,385,946 Year ended 2020 8,276,032 $64.30 29,661,978 Year ended 2021 4,474,649 $75.44 34,136,627 Nine months September 30, 2022 1,971,092 $76.69 36,107,719 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 any time, in whole or from time to time in part, at par for cash. 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 ("DRSPP") In February 2021, 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 our common stock under the DRSPP. The DRSPP commenced on September 24, 2001. The following table summarizes SL Green common stock issued, and proceeds received from dividend reinvestments and/or stock purchases under the DRSPP for the three and nine months ended September 30, 2022 and 2021, respectively (dollars in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Shares of common stock issued 2,933 1,944 5,827 8,770 Dividend reinvestments/stock purchases under the DRSPP $ 140 $ 146 $ 339 $ 613 Earnings per Share We use the two-class method of computing earnings per share (“EPS”), which is an earnings allocation formula that determines EPS for common stock and any participating securities according to dividends declared (whether paid or unpaid). Under the two-class method, basic EPS is computed by dividing the income available to common stockholders by the weighted-average number of common stock shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur from share equivalent activity. SL Green's earnings per share for the three and nine months ended September 30, 2022 and 2021 are computed as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Numerator 2022 2021 2022 2021 Basic Earnings: Income (loss) attributable to SL Green common stockholders $ 7,377 $ 388,205 $ (28,748) $ 486,073 Less: distributed earnings allocated to participating securities (505) (357) (1,516) (1,071) Less: undistributed earnings allocated to participating securities — (1,977) — (1,790) Net income (loss) attributable to SL Green common stockholders (numerator for basic earnings per share) $ 6,872 $ 385,871 $ (30,264) $ 483,212 Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares 505 357 (484) 1,071 Add back: undistributed earnings allocated to participating securities — 1,977 — 1,790 Add back: effect of dilutive securities (redemption of units to common shares) 491 22,683 (1,831) 28,489 Net income (loss) attributable to SL Green common stockholders (numerator for diluted earnings per share) $ 7,868 $ 410,888 $ (32,579) $ 514,562 Three Months Ended September 30, Nine Months Ended September 30, Denominator 2022 2021 2022 2021 Basic Shares: Weighted average common stock outstanding 63,949 64,856 63,971 66,248 Effect of Dilutive Securities: Operating Partnership units redeemable for common shares 4,088 3,834 4,104 4,024 Stock-based compensation plans 860 806 1,052 676 Contingently issuable shares — — 122 101 Diluted weighted average common stock outstanding 68,897 69,496 69,249 71,049 The Company has excluded 621,134 and 517,574 common stock equivalents from the calculation of diluted shares outstanding for the three and nine months ended September 30, 2022, respectively, as they were anti-dilutive. The Company has excluded 969,631 and 1,032,243 common stock equivalents from the calculation of diluted shares outstanding for the three and nine months ended September 30, 2021, respectively, as they were anti-dilutive. Net income (loss) allocated to the preferred unitholders and common unitholders reflects their pro rata share of net income (loss) and distributions. All unit-related references and measurements including the number of units outstanding and earnings per unit have been retroactively adjusted to reflect the reverse stock split effectuated by SL Green’s Board of Directors in January 2021 for all periods presented in this Quarterly Report on Form 10-Q. Limited Partner Units As of September 30, 2022, limited partners other than SL Green owned 5.52%, or 3,759,073 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 and nine months ended September 30, 2022 and 2021, respectively, are computed as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Numerator 2022 2021 2022 2021 Basic Earnings: Net income (loss) attributable to SLGOP common unitholders (numerator for diluted earnings per unit) $ 7,868 $ 410,888 $ (30,579) $ 514,562 Less: distributed earnings allocated to participating securities (505) (357) (1,516) (1,071) Less: undistributed earnings allocated to participating securities — (1,977) — (1,790) Net income (loss) attributable to SLGOP common unitholders (numerator for basic earnings per unit) $ 7,363 $ 408,554 $ (32,095) $ 511,701 Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares 505 357 (484) 1,071 Add back: undistributed earnings allocated to participating securities — 1,977 — 1,790 Net income (loss) attributable to SLGOP common unitholders (numerator for diluted earnings per unit) $ 7,868 $ 410,888 $ (32,579) $ 514,562 Three Months Ended September 30, Nine Months Ended September 30, Denominator 2022 2021 2022 2021 Basic units: Weighted average common units outstanding 68,037 68,690 68,075 70,272 Effect of Dilutive Securities: Stock-based compensation plans 860 806 1,052 676 Contingently issuable units — — 122 101 Diluted weighted average common units outstanding 68,897 69,496 69,249 71,049 The Operating Partnership has excluded 621,134 and 517,574 common unit equivalents from the diluted units outstanding for the three and nine months ended September 30, 2022, respectively, as they were anti-dilutive. The Operating Partnership has excluded 969,631 and 1,032,243 common unit equivalents from the diluted units outstanding for the three and nine months ended September 30, 2021, respectively, as they were anti-dilutive. The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of September 30, 2022 (in thousands): Net unrealized gain (loss) on derivative instruments ( 1 ) SL Green’s share of joint venture net unrealized gain (loss) on derivative instruments ( 2 ) Net unrealized gain on marketable securities Total Balance at December 31, 2021 $ (25,881) $ (21,994) $ 1,117 $ (46,758) Other comprehensive gain (loss) before reclassifications 78,865 21,671 (609) 99,927 Amounts reclassified from accumulated other comprehensive income 2,526 1,879 — 4,405 Balance at September 30, 2022 $ 55,510 $ 1,556 $ 508 $ 57,574 (1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of operations. As of September 30, 2022 and December 31, 2021, the deferred net gains from these terminated hedges, which is included in accumulated other comprehensive income (loss) relating to net unrealized loss on derivative instruments, was $(0.5) million and $(0.6) million, respectively. (2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net loss from unconsolidated joint ventures in the respective consolidated statements of operations.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements We are required to disclose fair value information with regard to certain of 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 certain 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 consists 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 as of September 30, 2022 and December 31, 2021 (in thousands): September 30, 2022 Total Level 1 Level 2 Level 3 Assets: Marketable securities available-for-sale $ 12,039 $ — $ 12,039 $ — Interest rate cap and swap agreements (included in Other assets) 59,285 — 59,285 — Liabilities: Interest rate cap and swap agreements (included in Other liabilities) $ 3,592 $ — $ 3,592 $ — December 31, 2021 Total Level 1 Level 2 Level 3 Assets: Marketable securities available-for-sale $ 24,146 $ — $ 24,146 $ — Interest rate cap and swap agreements (included in Other assets) 1,896 — 1,896 — Liabilities: Interest rate cap and swap agreements (included in Other liabilities) $ 29,912 $ — $ 29,912 $ — We evaluate real estate investments and debt and preferred equity investments, including intangibles, for potential impairment primarily utilizing cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, as well as sales comparison approach, which utilizes comparable sales, listings and sales contracts, all of which are classified as Level 3 inputs. In September 2022, the Company recorded at fair value the assets acquired and liabilities assumed at 245 Park Avenue. This fair value was determined using a third party valuation which primarily utilized cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, as well as sales comparison approach, which utilizes comparable sales, listings and sales contracts, all of which are classified as Level 3 inputs. Marketable securities classified as Level 1 are derived from quoted prices in active markets. The valuation technique used to measure the fair value of 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. 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 instrument to their present value using adjusted market interest rates, which is provided by a third-party specialist. The following table provides the carrying value and fair value of these financial instruments as of September 30, 2022 and December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Carrying Value (1) Fair Value Carrying Value (1) Fair Value Debt and preferred equity investments $ 663,985 (2) $ 1,088,723 (2) Fixed rate debt $ 4,497,238 $ 4,284,029 $ 3,274,324 $ 3,336,463 Variable rate debt 1,140,148 1,133,490 801,051 800,672 $ 5,637,386 $ 5,417,519 $ 4,075,375 $ 4,137,135 (1) Amounts exclude net deferred financing costs. (2) As of September 30, 2022, debt and preferred equity investments had an estimated fair value ranging between $0.6 billion and $0.7 billion. As of December 31, 2021, debt and preferred equity investments had an estimated fair value ranging between $1.0 billion and $1.1 billion. Disclosures regarding fair value of financial instruments was based on pertinent information available to us as of September 30, 2022 and December 31, 2021. 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.

Financial Instruments_ Derivati

Financial Instruments: Derivatives and Hedging	9 Months Ended
	Sep. 30, 2022
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, collars 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 sheet 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 (loss) until the hedged item is 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 value at inception and fair value of our consolidated derivative financial instruments as of September 30, 2022 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 (dollars in thousands). Notional Strike Effective Expiration Balance Sheet Location Fair Interest Rate Cap $ 111,869 3.500 % November 2021 November 2022 Other Assets $ 8 Interest Rate Swap 100,000 0.212 % January 2021 January 2023 Other Assets 1,173 Interest Rate Swap 400,000 0.184 % January 2022 February 2023 Other Assets 4,892 Interest Rate Swap 50,000 0.633 % February 2022 February 2023 Other Assets 518 Interest Rate Swap 100,000 1.163 % November 2021 July 2023 Other Assets 2,514 Interest Rate Swap 200,000 1.133 % November 2021 July 2023 Other Assets 5,076 Interest Rate Cap 600,000 4.080 % September 2022 September 2023 Other Liabilities (2,822) Interest Rate Swap 150,000 2.700 % December 2021 January 2024 Other Assets 2,949 Interest Rate Swap 200,000 4.590 % November 2022 January 2024 Other Liabilities (476) Interest Rate Swap 200,000 4.511 % November 2022 January 2024 Other Liabilities (294) Interest Rate Swap 150,000 2.721 % December 2021 January 2026 Other Assets 6,104 Interest Rate Swap 200,000 2.762 % December 2021 January 2026 Other Assets 7,963 Interest Rate Swap 100,000 3.003 % February 2023 February 2027 Other Assets 3,451 Interest Rate Swap 100,000 2.833 % February 2023 February 2027 Other Assets 4,069 Interest Rate Swap 50,000 2.563 % February 2023 February 2027 Other Assets 2,527 Interest Rate Swap 200,000 2.691 % February 2023 February 2027 Other Assets 9,175 Interest Rate Swap 300,000 2.966 % July 2023 May 2027 Other Assets 8,814 Interest Rate Swap 100,000 3.756 % January 2023 January 2028 Other Assets 52 $ 55,693 During both the three and nine months ended September 30, 2022, we recorded a loss of $1.3 million based on the changes in the fair value of an interest rate swap we sold, which is included in Purchase price and other fair value adjustments in the consolidated statements of operations. No gains or losses on the changes in the fair values were included in interest expense in the consolidated statements of operations during the three and nine months ended September 30, 2021. The Company has agreements with each of its derivative counterparties that contain a provision where if the Company defaults on any of its indebtedness, then the Company could also be declared in default on its derivative obligations. As of September 30, 2022, 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 $3.6 million. As of September 30, 2022, the Company was not required to post 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 $3.6 million as of September 30, 2022. Gains and losses on terminated hedges are included in accumulated other comprehensive income (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 income (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 $(37.6) million of the current balance held in accumulated other comprehensive income (loss) will be reclassified into interest expense and $(8.2) million of the portion related to our share of joint venture accumulated other comprehensive income (loss) will be reclassified into equity in net loss 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 operations for the three months ended September 30, 2022 and 2021, respectively (in thousands): Amount of Gain (Loss) Location of Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income Amount of Loss Reclassified from Three Months Ended September 30, Three Months Ended September 30, Derivative 2022 2021 2022 2021 Interest Rate Swaps/Caps $ 44,057 $ (450) Interest expense $ 3,061 $ (4,416) Share of unconsolidated joint ventures' derivative instruments 9,354 (143) Equity in net loss from unconsolidated joint ventures (138) (2,792) $ 53,411 $ (593) $ 2,923 $ (7,208) 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 operations for the nine months ended September 30, 2022 and 2021, respectively (in thousands): Amount of Gain (Loss) Recognized in Location of Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income Amount of Loss Reclassified from Nine Months Ended September 30, Nine Months Ended September 30, Derivative 2022 2021 2022 2021 Interest Rate Swaps/Caps $ 83,768 $ 7,305 Interest expense $ (2,673) $ (13,359) Share of unconsolidated joint ventures' derivative instruments 22,951 (20,641) Equity in net loss from unconsolidated joint ventures (1,986) (6,542) $ 106,719 $ (13,336) $ (4,659) $ (19,901) The following table summarizes the notional value at inception and fair value of our joint ventures' derivative financial instruments as of September 30, 2022 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 (dollars in thousands). Notional Strike Effective Expiration Classification Fair Interest Rate Cap $ 23,000 4.750 % January 2021 January 2023 Asset $ — Interest Rate Cap 220,000 4.000 % February 2022 February 2023 Asset 188 Interest Rate Cap 510,000 3.000 % December 2021 June 2023 Asset 4,589 Interest Rate Cap 272,000 4.000 % July 2022 August 2023 Asset 979 Interest Rate Cap 400,000 3.500 % September 2022 September 2023 Asset 3,073 Interest Rate Cap 1,075,000 4.080 % September 2022 September 2023 Asset 5,070 Interest Rate Cap 125,000 4.080 % September 2022 September 2023 Asset 590 Interest Rate Cap 246,155 0.550 % February 2022 May 2024 Asset 23,192 Interest Rate Cap 246,155 0.550 % February 2022 May 2024 Asset 23,161 Interest Rate Swap 177,000 1.669 % March 2016 February 2026 Asset 13,348 $ 74,190

Lease Income

Lease Income	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Lease Income	Lease Income The Operating Partnership is the lessor and the sublessor to tenants under operating and sales-type leases. The minimum rental amounts due under the leases are generally subject to scheduled fixed increases or adjustments. The leases generally also require that the tenants reimburse us for increases in certain operating costs and real estate taxes above their base year costs. The components of lease income from operating leases during the three and nine months ended September 30, 2022 and 2021 were as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Fixed lease payments $ 142,778 $ 142,979 $ 416,033 $ 473,466 Variable lease payments 19,990 12,660 58,283 58,634 Total lease payments (1) $ 162,768 $ 155,639 $ 474,316 $ 532,100 Amortization of acquired above and below-market leases 184 (276) (101) (4,037) Total rental revenue $ 162,952 $ 155,363 $ 474,215 $ 528,063 (1) Amounts include $55.7 million and $169.9 million of sublease income during the three and nine months ended September 30, 2022 and $52.0 million and $175.5 million of sublease income during the three and nine months ended September 30, 2021, respectively. The components of lease income from sales-type leases during the three and nine months ended September 30, 2022 and 2021 were as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Interest income (1) $ 1,099 $ 1,108 $ 3,286 $ 3,313 (1) These amounts are included in Other income in our consolidated statements of operations.
Lease Income	Lease Income The Operating Partnership is the lessor and the sublessor to tenants under operating and sales-type leases. The minimum rental amounts due under the leases are generally subject to scheduled fixed increases or adjustments. The leases generally also require that the tenants reimburse us for increases in certain operating costs and real estate taxes above their base year costs. The components of lease income from operating leases during the three and nine months ended September 30, 2022 and 2021 were as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Fixed lease payments $ 142,778 $ 142,979 $ 416,033 $ 473,466 Variable lease payments 19,990 12,660 58,283 58,634 Total lease payments (1) $ 162,768 $ 155,639 $ 474,316 $ 532,100 Amortization of acquired above and below-market leases 184 (276) (101) (4,037) Total rental revenue $ 162,952 $ 155,363 $ 474,215 $ 528,063 (1) Amounts include $55.7 million and $169.9 million of sublease income during the three and nine months ended September 30, 2022 and $52.0 million and $175.5 million of sublease income during the three and nine months ended September 30, 2021, respectively. The components of lease income from sales-type leases during the three and nine months ended September 30, 2022 and 2021 were as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Interest income (1) $ 1,099 $ 1,108 $ 3,286 $ 3,313 (1) These amounts are included in Other income in our consolidated statements of operations.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings As of September 30, 2022, 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. 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.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Segment Information	Segment Information The Company has two reportable segments, real estate and debt and preferred equity investments. We evaluate real estate performance and allocate resources based on earnings contributions. The primary sources of revenue are generated from tenant rents, escalations and reimbursement revenue. Real estate property operating expenses consist primarily of security, maintenance, utility costs, insurance, 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 consolidated results of operations for the three and nine months ended September 30, 2022 and 2021, and selected asset information as of September 30, 2022 and December 31, 2021, regarding our operating segments are as follows (in thousands): Real Estate Segment Debt and Preferred Equity Segment Total Company Total revenues Three months ended: September 30, 2022 $ 182,943 $ 29,513 $ 212,456 September 30, 2021 185,129 20,072 205,201 Nine months ended: September 30, 2022 $ 532,057 $ 69,808 $ 601,865 September 30, 2021 589,958 59,452 649,410 Net (loss) income Three months ended: September 30, 2022 $ (8,934) $ 21,145 $ 12,211 September 30, 2021 398,377 17,157 415,534 Nine months ended: September 30, 2022 $ (65,824) $ 53,571 $ (12,253) September 30, 2021 478,589 50,224 528,813 Total assets As of: September 30, 2022 $ 12,046,743 $ 669,307 $ 12,716,050 December 31, 2021 9,974,140 1,092,489 11,066,629 Interest costs for the debt and preferred equity segment include actual costs incurred for borrowings on the 2017 MRA. Interest is imputed on the investments that do not collateralize the 2017 MRA using our weighted average corporate 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 to the debt and preferred equity segment because the use of personnel and resources is dependent on transaction volume between the two segments and varies between periods. In addition, we base performance on the individual segments prior to allocating marketing, general and administrative expenses. For the three and nine months ended September 30, 2022, marketing, general and administrative expenses totaled $21.3 million and $69.6 million. For the three and nine months ended September 30, 2021, marketing, general and administrative expenses totaled $23.5 million and $68.4 million. All other expenses, except interest, relate entirely to the real estate assets. There were no transactions between the above two segments.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2022
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. 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 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.
Investment in Commercial Real Estate Properties	Investment in Commercial Real Estate Properties 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 3 years 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 1 year to 15 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 1 year to 15 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 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. The Company classifies those leases under which the Company is the lessee at lease commencement as finance or operating leases. Leases qualify as finance leases if the lease transfers ownership of the asset at the end of the lease term, the lease grants an option to purchase the asset that we are reasonably certain to exercise, the lease term is for a major part of the remaining economic life of the asset, or the present value of the lease payments exceeds substantially all of the fair value of the asset. Leases that do not qualify as finance leases are deemed to be operating leases. At lease commencement the Company records a lease liability which is measured as the present value of the lease payments and a right of use asset which is measured as the amount of the lease liability and any initial direct costs incurred. The Company applies a discount rate to determine the present value of the lease payments. If the rate implicit in the lease is known, the Company uses that rate. If the rate implicit in the lease is not known, the Company uses a discount rate reflective of the Company’s collateralized borrowing rate given the term of the lease. To determine the discount rate, the Company employs a third party specialist to develop an analysis based primarily on the observable borrowing rates of the Company, other REITs, and other corporate borrowers with long-term borrowings. On the consolidated statements of operations, operating leases are expensed through operating lease rent while financing leases are expensed through amortization and interest expense. When applicable, the Company combines the consideration for lease and non-lease components in the calculation of the value of the lease obligation and right-of-use asset.
Cash and Cash Equivalents	Cash and Cash Equivalents We consider all highly liquid investments with maturity of three months or less when purchased to be cash equivalents.
Restricted Cash	Restricted Cash Restricted cash primarily consists of security deposits held on behalf of our tenants, interest reserves, as well as capital improvement and real estate tax escrows required under certain loan agreements.
Investment in Marketable Securities	Investment in Marketable Securities At acquisition, we designate a debt security as held-to-maturity, available-for-sale, or trading. As of September 30, 2022, we did not have any debt securities designated as held-to-maturity or trading. We account for our available-for-sale securities 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. The cost of marketable securities sold and the amount reclassified out of accumulated other comprehensive income (loss) into earnings is determined using the specific identification method. Credit losses are recognized in accordance with ASC 326. We account for our equity marketable securities at fair value pursuant to ASC 820-10, with the net unrealized gains or losses reported in net income.
Investments in Unconsolidated Joint Ventures	Investments in Unconsolidated Joint VenturesWe 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 each joint ventures' actual and projected cash flows.
Deferred Lease Costs and Lease Classification	Deferred Lease Costs Deferred lease costs consist of incremental fees and direct costs that would not have been incurred if the lease had not been obtained and are amortized on a straight-line basis over the related lease term. Lease Classification Lease classification for leases under which the Company is the lessor is evaluated at lease commencement and leases not classified as sales-type leases or direct financing leases are classified as operating leases. Leases qualify as sales-type leases if the contract includes either transfer of ownership clauses, certain purchase options, a lease term representing a major part of the economic life of the asset, or the present value of the lease payments and residual guarantees provided by the lessee exceeds substantially all of the fair value of the asset. Additionally, leasing an asset so specialized that it is not deemed to have any value to the Company at the end of the lease term may also result in classification as a sales-type lease. Leases qualify as direct financing leases when the present value of the lease payments and residual value guarantees provided by the lessee and unrelated third parties exceeds substantially all of the fair value of the asset and collection of the payments is probable.
Revenue Recognition	Revenue Recognition Rental revenue for operating leases is recognized on a straight-line basis over the term of the lease. Rental revenue recognition commences when the leased space is available for its intended use by the lessee. To determine whether the leased space is available for its intended use by the lessee, management evaluates whether we or the tenant are 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 of tenant improvements, rental revenue recognition begins when the tenant takes possession of or controls the space. 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. In addition to base rent, our tenants also generally will pay variable rent, which represents their pro rata share of increases in real estate taxes and certain operating expenses for the building over a base year. In some leases, in lieu of paying additional rent based upon increases in certain 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. Rental revenue is recognized if collectability is probable. If collectability of substantially all of the lease payments is assessed as not probable, any difference between the rental revenue recognized to date and the lease payments that have been collected is recognized as a current-period adjustment to rental revenue. A subsequent change in the assessment of collectability to probable may result in a current-period adjustment to rental revenue for any difference between the rental revenue that would have been recognized if collectability had always been assessed as probable and the rental revenue recognized to date. The Company provides its tenants with certain customary services for lease contracts such as common area maintenance and general security. We have elected to combine the non-lease components with the lease components of our operating lease agreements and account for them as a single lease component in accordance with ASC 842. We record a gain or loss on sale of real estate assets when we no longer have a controlling financial interest in the entity owning the real estate, a contract exists with a third party and that third party has control of the assets acquired. Investment income on debt and preferred equity investments is accrued based on the contractual terms of the instruments and when it is deemed collectible. Some 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 collectible. 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 an adjustment to 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 cash flows 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. We consider a debt and preferred equity investment to be past due when amounts contractually due have not been paid. 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 is resumed on any debt or preferred equity investment that is on non-accrual status when such debt or preferred equity investment becomes contractually current and performance is demonstrated to be resumed. We may syndicate a portion of the loans that we originate or sell the loans individually. When a transaction meets the criteria for sale accounting, we 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 operations. Any fees received at the time of sale or syndication are recognized as part of investment income. Asset management fees are recognized on a straight-line basis over the term of the asset management agreement.
Debt and Preferred Equity Investments	Debt and Preferred Equity Investments Debt and preferred equity investments are presented at the net amount expected to be collected in accordance with ASC 326. An allowance for loan losses is deducted from the amortized cost basis of the financial assets to present the net carrying value at the amount expected to be collected through the expected maturity date of such investments. The expense for loan loss and other investment reserves is the charge to earnings to adjust the allowance for loan losses to the appropriate level. Amounts are written off from the allowance when we de-recognize the related investment either as a result of a sale of the investment or acquisition of equity interests in the collateral. The Company evaluates the amount expected to be collected based on current market and economic conditions, historical loss information, and reasonable and supportable forecasts. The Company's assumptions are derived from both internal data and external data which may include, among others, governmental economic projections for the New York City Metropolitan area, public data on recent transactions and filings for securitized debt instruments. This information is aggregated by asset class and adjusted for duration. Based on these inputs, loans are evaluated at the individual asset level. In certain instances, we may also use a probability-weighted model that considers the likelihood of multiple outcomes and the amount expected to be collected for each outcome. The evaluation of the possible credit deterioration associated with the performance and/or value of the underlying collateral property as well as the financial and operating capability of the borrower/sponsor requires significant judgment, which include both asset level and market assumptions over the relevant time period. In addition, quarterly, the Company assigns each loan a risk rating. Based on a 3-point scale, loans are rated “1” through “3,” from lower risk to higher risk, which ratings are defined as follows: 1 - Low Risk Assets - Low probability of loss, 2 - Watch List Assets - Higher potential for loss, 3 - High Risk Assets - Loss more likely than not. Loans with risk ratings of 2 or above are evaluated to determine whether the expected risk of loss is appropriately captured through the combination of our expectations of current conditions, historical loss information and supportable forecasts described above or whether risk characteristics specific to the loan warrant the use of a probability-weighted model. Financing investments that are classified as held for sale are carried at the expected amount to be collected 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 expected amount to be collected. Other financing receivables that are included in balance sheet line items other than the Debt and preferred equity investments line are also measured at the net amount expected to be collected. Accrued interest receivable amounts related to these debt and preferred equity investment and other financing receivables are recorded at the net amount expected to be collected within Other assets in the consolidated balance sheets. Accrued interest receivables that are written off are recognized as an expense in loan loss and other investment reserves.
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, SL Green will be subject to Federal income tax on its 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 its 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 operations relates to the Operating Partnership’s consolidated taxable REIT subsidiaries. The Operating Partnership may also be subject to certain state, local and franchise taxes. We have elected, and may elect in the future, to treat certain of our 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 September 30, 2022, we recorded a Federal, state and local tax benefit of $0.1 million. During the nine months ended September 30, 2022, we recorded a Federal, state and local tax provision of $2.2 million. During the three months ended September 30, 2021, we recorded no Federal, state and local tax provision. During the nine months ended September 30, 2021, we recorded a Federal, state and local tax provision of $1.5 million. 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.
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.
Concentrations 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 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."
Reclassification	Reclassification Certain prior year balances have been reclassified to conform to our current year presentation.
Accounting Standards Updates	Accounting Standards Updates In March 2022, the FASB issued ASU No. 2022-02 Financial Instruments - Credit Losses (Topic 326) Troubled Debt Restructurings and Vintage Disclosures. ASU 2022-02 eliminates the troubled debt restructuring recognition and measurement guidance and, instead, requires that an entity evaluate whether the modification represents a new loan or a continuation of an existing loan. The amendments enhance existing disclosure requirements and introduce new requirements related to certain modifications of receivables made to borrowers experiencing financial difficulties. Additionally, ASU 2022-02 requires an entity to disclose current-period gross write-offs by year of origination for financing receivables and net investment in leases within the scope of Subtopic 326-20. Gross write-off information must be included in the vintage disclosures required for entities in accordance with Subtopic 326-20, which requires that an entity disclose the amortized cost basis of financing receivables by credit-quality indicator and class of financing receivable by year of origination. ASU 2022-02 is effective for reporting periods beginning after December 15, 2022, including interim periods within those fiscal years, with early adoption permitted. We are currently evaluating the impact of the adoption of ASU 2022-02 on our consolidated financial statements, but do not believe the adoption of this standard will have a material impact on our consolidated financial statements. In July 2021, the FASB issued ASU No. 2021-05 Leases (Topic 842) Lessors - Certain Leases with Variable Lease Payments. ASU 2021-05 amends the lease classification requirements for lessors when classifying and accounting for a lease with variable lease payments that do not depend on a reference rate index or a rate. The update provides criteria, that if met, the lease would be classified and accounted for as an operating lease. ASU 2021-05 is effective for reporting periods beginning after December 15, 2021. The Company adopted this guidance on January 1, 2022 and it did not have a material impact on the Company's consolidated financial statements. In August 2020, the FASB issued Accounting Standard Update, or "ASU," No. 2020-06 Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40). ASU 2020-06 simplifies the accounting for convertible instruments by reducing the number of accounting models for convertible debt instruments and convertible preferred stock, removes certain settlement conditions that are required for equity contracts to qualify for the derivative scope exception and also simplifies the diluted earnings per share calculation in certain areas. ASU 2020-06 is effective for reporting periods beginning after December 15, 2021. The Company adopted this guidance on January 1, 2022 and it did not have a material impact on the Company's consolidated financial statements.
Fair Value Measurements	Fair Value MeasurementsWe are required to disclose fair value information with regard to certain of 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 certain 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 consists 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 evaluate real estate investments and debt and preferred equity investments, including intangibles, for potential impairment primarily utilizing cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, as well as sales comparison approach, which utilizes comparable sales, listings and sales contracts, all of which are classified as Level 3 inputs. In September 2022, the Company recorded at fair value the assets acquired and liabilities assumed at 245 Park Avenue. This fair value was determined using a third party valuation which primarily utilized cash flow projections that apply, among other things, estimated revenue and expense growth rates, discount rates and capitalization rates, as well as sales comparison approach, which utilizes comparable sales, listings and sales contracts, all of which are classified as Level 3 inputs. Marketable securities classified as Level 1 are derived from quoted prices in active markets. The valuation technique used to measure the fair value of 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. 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 instrument to their present value using adjusted market interest rates, which is provided by a third-party specialist.

Organization and Basis of Pre_2

Organization and Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of commercial office properties	As of September 30, 2022, we owned the following interests in properties in the New York metropolitan area, primarily in midtown Manhattan. Our investments located outside of Manhattan are referred to as the Suburban properties: Consolidated Unconsolidated Total Location Property Number of Buildings Approximate Square Feet (unaudited) Number of Buildings Approximate Square Feet (unaudited) Number of Buildings Approximate Square Feet (unaudited) Weighted Average Occupancy (1) (unaudited) Commercial: Manhattan Office 13 9,963,138 12 13,998,381 25 23,961,519 91.4 % Retail 2 17,888 9 301,996 11 319,884 91.2 % Development/Redevelopment (1) 5 2,091,719 3 2,746,241 8 4,837,960 N/A 20 12,072,745 24 17,046,618 44 29,119,363 91.4 % Suburban Office 7 862,800 — — 7 862,800 80.1 % Total commercial properties 27 12,935,545 24 17,046,618 51 29,982,163 91.0 % Residential: Manhattan Residential 1 (2) 140,382 — — 1 140,382 85.6 % Total portfolio 28 13,075,927 24 17,046,618 52 30,122,545 90.9 % (1) The weighted average occupancy for commercial properties represents the total occupied square footage divided by the total square footage at acquisition. The weighted average occupancy for residential properties represents the total occupied units divided by the total available units. Properties under construction are not included in the calculation of weighted average occupancy. (2) As of September 30, 2022, we owned a building at 7 Dey Street / 185 Broadway that was comprised of approximately 140,382 square feet (unaudited) of residential space and approximately 50,206 square feet (unaudited) of office and retail space that is under development. For the purpose of this report, we have included this building in the number of residential properties we own. However, we have included only the residential square footage in the residential approximate square footage, and have listed the balance of the square footage as development square footage.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2022
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 September 30, 2022 and December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Identified intangible assets (included in other assets): Gross amount $ 403,552 $ 199,722 Accumulated amortization (179,211) (182,643) Net (1) $ 224,341 $ 17,079 Identified intangible liabilities (included in deferred revenue): Gross amount $ 361,338 $ 212,767 Accumulated amortization (203,064) (210,262) Net (1) $ 158,274 $ 2,505
Schedule of marketable securities	As of September 30, 2022 and December 31, 2021, we held the following marketable securities (in thousands): September 30, 2022 December 31, 2021 Commercial mortgage-backed securities $ 12,039 $ 24,146 Total marketable securities available-for-sale $ 12,039 $ 24,146 Equity marketable securities $ 4,496 $ 10,606 Total investment in marketable securities $ 16,535 $ 34,752
Schedules of concentration of risk, by risk factor	For the three months ended September 30, 2022, the following properties contributed more than 5.0% of our annualized cash rent from office properties, including our share of annualized cash rent from joint venture office properties: Property Three months ended September 30, 2022 One Vanderbilt Avenue 14.3% 11 Madison Avenue 8.6% 1185 Avenue of the Americas 6.9% 420 Lexington Ave 6.8% 1515 Broadway 6.4% 280 Park Avenue 5.6% 919 Third Avenue 5.0%

Real Estate (Tables)

Real Estate (Tables)	9 Months Ended
	Sep. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Schedule of business acquisitions, by acquisition	The following table summarizes the properties acquired during the nine months ended September 30, 2022: Property Acquisition Date Property Type Approximate Square Feet Gross Asset Valuation (in millions) 245 Park Avenue (1) September 2022 Fee Interest 1,782,793 $ 1,960.0 (1) On October 31, 2021, HNA, through an affiliated entity, filed for Chapter 11 bankruptcy protection on account of its investment in 245 Park Avenue, together with another asset in Chicago. On July 8, 2022, certain of the debtors and affiliates of SL Green entered into a Plan Sponsorship and Investment Agreement (the "Plan"), pursuant to which SL Green became the stalking horse bidder for the property. Since the debtors did not receive any qualifying bids for the property and the Plan was confirmed, SL Green acquired full ownership and control of the property in September 2022, at which time the Company's outstanding preferred equity and accrued interest balance were credited to our equity investment in the property . We recorded the assets acquired and liabilities assumed at fair value. See Note 5, "Debt and Preferred Equity Investments" and Note 16, "Fair Value Measurements."

Properties Held for Sale and _2

Properties Held for Sale and Property Dispositions (Tables)	9 Months Ended
	Sep. 30, 2022
Discontinued Operations and Disposal Groups [Abstract]
Summary of properties sold	The following table summarizes the properties disposed of during the nine months ended September 30, 2022: Property Disposition Date Property Type Approximate Square Feet Sales Price (in millions) (Loss) Gain (in millions) (1) 707 Eleventh Avenue February 2022 Fee Interest 159,720 $ 95.0 $ (0.8) 1080 Amsterdam Avenue April 2022 Leasehold Interest 85,250 42.7 17.9 1591-1597 Broadway May 2022 Fee Interest 7,684 121.0 (4.5) 609 Fifth Avenue June 2022 Fee Interest 138,563 100.5 (80.2) (1) The (losses) gains on sale are net of $5.6 million of employee compensation accrued in connection with the realization of the investment dispositions during the nine months ended September 30, 2022. Additionally, the amounts do not include adjustments for expenses recorded in subsequent periods.

Debt and Preferred Equity Inv_2

Debt and Preferred Equity Investments (Tables)	9 Months Ended
	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Schedule of debt and preferred equity book balance roll forward	Below is a summary of the activity in our debt and preferred equity investments for the nine months ended September 30, 2022 and the twelve months ended December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Balance at beginning of year (1) $ 1,088,723 $ 1,076,542 Debt investment originations/fundings/accretion (2) 48,778 193,824 Preferred equity investment originations/accretion (2) 35,536 13,220 Redemptions/sales/syndications/equity ownership/amortization (3) (509,052) (201,446) Net change in loan loss reserves — 6,583 Balance at end of period (1) $ 663,985 $ 1,088,723 (1) Net of unamortized fees, discounts, and premiums. (2) Accretion includes amortization of fees and discounts and paid-in-kind investment income. (3) Certain participations in debt investments that were sold or syndicated, but did not meet the conditions for sale accounting, are included in Other assets and Other liabilities on the consolidated balance sheets.
Schedule of debt	Below is a summary of our debt and preferred equity investments as of September 30, 2022 (dollars in thousands): Floating Rate Fixed Rate Total Carrying Value Senior Financing Weighted Average Yield at End of Period Maturity (1) Type Carrying Value Face Value Interest Rate Carrying Value Face Value Interest Rate Senior Mortgage Debt $ 32,616 $ 32,658 L + 3.50% $ — $ — —% $ 32,616 $ — 7.21% 2022 Mezzanine Debt 156,833 157,320 L + 4.95% - 12.38% 356,647 364,742 7.00% - 14.30% 513,480 1,663,817 6.27% 2022 - 2029 Preferred Equity — — — 117,889 117,889 6.5% 117,889 250,000 6.55% 2027 Balance at end of period $ 189,449 $ 189,978 $ 474,536 $ 482,631 $ 663,985 $ 1,913,817 (1) Excludes available extension options to the extent they have not been exercised as of the date of this filing.
Allowance for credit losses on financing receivables	The following table is a roll forward of our total allowance for loan losses for the nine months ended September 30, 2022 and the twelve months ended December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Balance at beginning of year $ 6,630 $ 13,213 Write-offs charged against the allowance — (6,583) Balance at end of period (1) $ 6,630 $ 6,630 (1) As of September 30, 2022, all financing receivables on non-accrual had an allowance for loan loss except for one debt investment with a carrying value of $225.4 million.
Schedule of investment in financing receivables and risk rating	The following table sets forth the carrying value of our debt and preferred equity investment portfolio by risk rating as of September 30, 2022 and December 31, 2021 (dollars in thousands): Risk Rating September 30, 2022 December 31, 2021 1 - Low Risk Assets - Low probability of loss $ 307,492 $ 644,489 2 - Watch List Assets - Higher potential for loss 349,603 437,344 3 - High Risk Assets - Loss more likely than not 6,890 6,890 $ 663,985 $ 1,088,723 The following table sets forth the carrying value of our debt and preferred equity investment portfolio by year of origination and risk rating as of September 30, 2022 (dollars in thousands): As of September 30, 2022 Risk Rating 2022 (1) 2021 (1) 2020 (1) Prior (1) Total 1 - Low Risk Assets - Low probability of loss $ — $ — $ 168,223 $ 139,269 $ 307,492 2 - Watch List Assets - Higher potential for loss — 74,390 — 275,213 349,603 3 - High Risk Assets - Loss more likely than not — — — 6,890 6,890 $ — $ 74,390 $ 168,223 $ 421,372 $ 663,985 (1) Year in which the investment was originated or acquired by us or in which a material modification occurred.
Summary of debt investments	As of September 30, 2022 and December 31, 2021, we held the following debt investments with an aggregate weighted average current yield of 6.32% as of September 30, 2022 (dollars in thousands): Loan Type September 30, 2022 September 30, 2022 Senior September 30, 2022 Carrying Value (1) December 31, 2021 (1) Maturity (2) Fixed Rate Investments: Mezzanine Loan (3) $ — $ 394,854 $ 225,367 $ 225,367 June 2023 Mezzanine Loan — 281,147 74,390 66,873 June 2023 Mezzanine Loan (4)(5) — 105,000 13,366 13,366 June 2024 Mezzanine Loan — 95,000 30,000 30,000 January 2025 Mezzanine Loan — 85,000 20,000 20,000 December 2029 Mezzanine Loan — — — 43,521 Mortgage Loan — — — 73,000 Mezzanine Loan (6) — — — 55,250 Total fixed rate $ — $ 961,001 $ 363,123 $ 527,377 Floating Rate Investments: Mortgage and Mezzanine Loan $ 8,257 $ — $ 50,186 $ 34,874 December 2022 Mezzanine Loan — 275,000 50,000 49,998 April 2023 Mezzanine Loan 3,761 54,000 8,243 8,050 May 2023 Mezzanine Loan 22,592 187,733 42,091 30,802 May 2023 Mezzanine Loan — 186,084 39,083 37,511 July 2023 Mezzanine Loan (7) — — — 133,735 Total floating rate $ 34,610 $ 702,817 $ 189,603 $ 294,970 Allowance for loan loss — — (6,630) (6,630) Total $ 34,610 $ 1,663,818 $ 546,096 $ 815,717 (1) Carrying value is net of discounts, premiums, original issue discounts and deferred origination fees. (2) Represents contractual maturity, excluding any extension options to the extent they have not been exercised as of the date of this filing. (3) This loan was put on non-accrual in July 2020 and remains on non-accrual as of September 30, 2022. No investment income has been recognized subsequent to it being put on non-accrual. The Company is in discussions with the borrower. (4) Carrying value is net of a $12.4 million participation that was sold and did not meet the conditions for sale accounting, which is included in Other assets and Other liabilities on the consolidated balance sheets as a result. (5) This loan went into default and was put on non-accrual in June 2020 and remains on non-accrual as of September 30, 2022. No investment income has been recognized subsequent to it being put on non-accrual. The Company is in discussions with the borrower. Additionally, we determined the borrower entity to be a VIE, in which we are not the primary beneficiary. (6) In September 2022, the Company successfully acquired full ownership and control of the property at 245 Park Avenue. See below table and Note 3, "Property Acquisitions." (7) In September 2022, the Company converted its mezzanine loan position secured by the equity interest in 5 Times Square to an equity interest in a joint venture partnership with the existing equity holders. See Note 6, " Investments in Unconsolidated Joint Ventures."
Summary of preferred equity investments	As of September 30, 2022 and December 31, 2021, we held the following preferred equity investments with an aggregate weighted average current yield of 6.55% as of September 30, 2022 (dollars in thousands): Type September 30, 2022 September 30, 2022 Senior September 30, 2022 Carrying Value (1) December 31, 2021 (1) Mandatory Redemption (2) Preferred Equity $ — $ 250,000 $ 117,889 $ 112,234 February 2027 Preferred Equity (3) — — — 160,772 Total Preferred Equity $ — $ 250,000 $ 117,889 $ 273,006 Allowance for loan loss — — — — Total $ — $ 250,000 $ 117,889 $ 273,006 (1) Carrying value is net of deferred origination fees. (2) Represents contractual redemption, excluding any unexercised extension options. (3) On October 31, 2021, HNA, through an affiliated entity, filed for Chapter 11 bankruptcy protection on account of its investment in 245 Park Avenue, together with another asset in Chicago. On July 8, 2022, certain of the debtors and affiliates of SL Green entered into the Plan, pursuant to which SL Green became the stalking horse bidder for the property. Since the debtors did not receive any qualifying bids for the property and the Plan was confirmed, SL Green acquired full ownership and control of the property in September 2022, at which time the Company's outstanding preferred equity and accrued interest balance were credited to our equity investment in the property. See Note 3, "Property Acquisitions."

Investments in Unconsolidated_2

Investments in Unconsolidated Joint Ventures (Tables)	9 Months Ended
	Sep. 30, 2022
Equity Method Investments and Joint Ventures [Abstract]
Schedule of general information on joint ventures	The table below provides general information on each of our joint ventures as of September 30, 2022: Property Partner Ownership (1) Economic (1) Unaudited Approximate Square Feet 100 Park Avenue Prudential Real Estate Investors 49.90% 49.90% 834,000 717 Fifth Avenue Wharton Properties / Private Investor 10.92% 10.92% 119,500 800 Third Avenue Private Investors 60.52% 60.52% 526,000 919 Third Avenue New York State Teacher's Retirement System 51.00% 51.00% 1,454,000 11 West 34th Street Private Investor / Wharton Properties 30.00% 30.00% 17,150 280 Park Avenue Vornado Realty Trust 50.00% 50.00% 1,219,158 1552-1560 Broadway (2) Wharton Properties 50.00% 50.00% 57,718 10 East 53rd Street Canadian Pension Plan Investment Board 55.00% 55.00% 354,300 21 East 66th Street (3) Private Investors 32.28% 32.28% 13,069 650 Fifth Avenue (4) Wharton Properties 50.00% 50.00% 69,214 121 Greene Street Wharton Properties 50.00% 50.00% 7,131 11 Madison Avenue PGIM Real Estate 60.00% 60.00% 2,314,000 One Vanderbilt Avenue National Pension Service of Korea / Hines Interest LP 71.01% 71.01% 1,657,198 Worldwide Plaza RXR Realty / New York REIT 24.95% 24.95% 2,048,725 1515 Broadway Allianz Real Estate of America 56.87% 56.87% 1,750,000 2 Herald Square Israeli Institutional Investor 51.00% 51.00% 369,000 115 Spring Street Private Investor 51.00% 51.00% 5,218 15 Beekman (5) A fund managed by Meritz Alternative Investment Management 20.00% 20.00% 221,884 85 Fifth Avenue Wells Fargo 36.27% 36.27% 12,946 One Madison Avenue (6) National Pension Service of Korea / Hines Interest LP / International Investor 25.50% 25.50% 1,048,700 220 East 42nd Street A fund managed by Meritz Alternative Investment Management 51.00% 51.00% 1,135,000 450 Park Avenue (7) Korean Institutional Investor / Israeli Institutional Investor 50.10% 25.10% 337,000 5 Times Square (8) RXR Realty led investment group 31.55% 31.55% 1,131,735 (1) Ownership interest and economic interest represent the Company's interests in the joint venture as of September 30, 2022. Changes in ownership or economic interests within the current year are disclosed in the notes below. (2) 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. (3) We hold a 32.28% interest in three retail units and one residential unit at the property and a 16.14% interest in two residential units at the property. (4) The joint venture owns a long-term leasehold interest in the retail space at 650 Fifth Avenue. (5) In 2020, the Company formed a joint venture, which then entered into a long-term sublease with the Company. (6) In 2020, the Company admitted partners to the One Madison Avenue development project, which resulted in the Company no longer retaining a controlling interest in the entity, as defined in ASC 810, and the deconsolidation of our remaining 50.5% interest. We recorded our investment at fair value, which resulted in the recognition of a fair value adjustment of $187.5 million in 2020. The fair value of our investment was determined by the terms of the joint venture agreement governing the capitalization of the project. The partners have committed aggregate equity to the project totaling no less than $501.8 million and their ownership interest in the joint venture is based on their capital contributions, up to an aggregate maximum of 49.5%. As of September 30, 2022, the total of the two partners' ownership interests based on equity contributed was 40.0%. In 2021, the Company admitted an additional partner to the development project for a committed aggregate equity investment totaling no less than $259.3 million. The partner's indirect ownership interest in the joint venture is based on it's capital contributions, up to an aggregate maximum of 25.0%. The transaction did not meet sale accounting under ASC 860 and, as a result, was treated as a secured borrowing for accounting purposes and is included in Other liabilities in our consolidated balance sheets at September 30, 2022 and December 31, 2021. (7) The 50.1% ownership interest reflected in this table is comprised of our 25.1% economic interest and a 25.0% economic interest held by a third-party. The third-party's economic interest is held within a joint venture that we consolidate and recognize in Noncontrolling interests in other partnerships on our consolidated balance sheet. An additional third-party owns the remaining 49.9% economic interest in the property. (8) In September 2022, the Company converted its mezzanine loan position secured by the equity interest in 5 Times Square to an equity interest in a joint venture partnership with the existing equity holders. See Note 5, " Debt and Preferred Equity Investments." Disposition of Joint Venture Interests or Properties The following table summarizes the investments in unconsolidated joint ventures disposed of during the nine months ended September 30, 2022: Property Ownership Interest Disposed Disposition Date Gross Asset Valuation (in millions) (Loss) Gain on Sale (in millions) (1) Stonehenge Portfolio Various April 2022 $ 1.0 $ — (1) Represents the Company's share of the gain or loss.
Schedule of first mortgage notes payable collateralized by the respective joint venture properties and assignment of leases	The mortgage notes and other loans payable collateralized by the respective joint venture properties and assignment of leases as of September 30, 2022 and December 31, 2021, respectively, are as follows (dollars in thousands): Property Economic (1) Current Maturity Final Maturity Date (2) Interest Rate (3) September 30, 2022 December 31, 2021 Fixed Rate Debt: 717 Fifth Avenue (mortgage) 10.92 % July 2022 (4) July 2022 (4) 4.45 % $ 300,000 $ 300,000 717 Fifth Avenue (mezzanine) 10.92 % July 2022 (4) July 2022 (4) 5.50 % 355,328 355,328 650 Fifth Avenue (mortgage) 50.00 % October 2022 (5) October 2022 (5) 4.46 % 210,000 210,000 650 Fifth Avenue (mezzanine) 50.00 % October 2022 (5) October 2022 (5) 5.45 % 65,000 65,000 21 East 66th Street 32.28 % April 2023 April 2028 3.60 % 12,000 12,000 919 Third Avenue 51.00 % June 2023 June 2023 5.12 % 500,000 500,000 220 East 42nd Street 51.00 % June 2023 June 2025 5.75 % 510,000 510,000 1515 Broadway 56.87 % March 2025 March 2025 3.93 % 787,296 801,845 11 Madison Avenue 60.00 % September 2025 September 2025 3.84 % 1,400,000 1,400,000 One Madison Avenue (6) 25.50 % November 2025 November 2026 3.90 % 356,201 169,629 800 Third Avenue 60.52 % February 2026 February 2026 3.37 % 177,000 177,000 Worldwide Plaza 24.95 % November 2027 November 2027 3.98 % 1,200,000 1,200,000 One Vanderbilt Avenue 71.01 % July 2031 July 2031 2.95 % 3,000,000 3,000,000 Stonehenge Portfolio — 195,493 Total fixed rate debt $ 8,872,825 $ 8,896,295 Floating Rate Debt: 1552 Broadway 50.00 % October 2022 (7) October 2022 (7) L+ 2.65 % $ 193,132 $ 193,132 121 Greene Street 50.00 % November 2022 November 2022 L+ 2.00 % 12,636 13,228 2 Herald Square 51.00 % November 2022 November 2023 L+ 1.95 % 192,500 200,989 11 West 34th Street 30.00 % January 2023 January 2023 L+ 1.45 % 23,000 23,000 115 Spring Street 51.00 % September 2023 September 2023 L+ 3.40 % 65,550 65,550 280 Park Avenue 50.00 % September 2023 September 2024 L+ 1.73 % 1,200,000 1,200,000 100 Park Avenue 49.90 % December 2023 December 2025 L+ 2.25 % 360,000 360,000 15 Beekman (8) 20.00 % January 2024 July 2025 L+ 1.50 % 73,136 43,566 5 Times Square 31.55 % September 2024 September 2026 S+ 4.69 % 847,469 — 10 East 53rd Street 55.00 % February 2025 February 2025 L+ 1.35 % 220,000 220,000 450 Park Avenue 25.10 % June 2025 June 2027 S+ 2.10 % 267,000 — 21 East 66th Street 32.28 % June 2033 June 2033 T+ 2.75 % 598 632 Total floating rate debt $ 3,455,021 $ 2,320,097 Total joint venture mortgages and other loans payable $ 12,327,846 $ 11,216,392 Deferred financing costs, net (129,765) (130,516) Total joint venture mortgages and other loans payable, net $ 12,198,081 $ 11,085,876 (1) Economic interest represents the Company's interests in the joint venture as of September 30, 2022. Changes in ownership or economic interests, if any, within the current year are disclosed in the notes to the investment in unconsolidated joint ventures table above. (2) Reflects exercise of all available options. The ability to exercise extension options may be subject to certain conditions, including meeting tests based on the operating performance of the property. (3) Interest rates as of September 30, 2022, taking into account interest rate hedges in effect during the period. Floating rate debt is presented with the stated spread over the 30-day LIBOR ("L"), Term SOFR ("S") or 1-year Treasury ("T"). (4) This loan matured in July 2022. The Company is in discussions with the lender on resolution. (5) In October 2022, the maturity date of the loan was extended by six months. (6) The loan is a $1.25 billion construction facility with an initial term of five years with one, one year extension option. Advances under the loan are subject to costs incurred. In conjunction with the loan, we provided partial guarantees for interest and principal payments, the amounts of which are based on certain construction milestones and operating metrics. (7) This loan matured in October 2022. The Company is in discussions with the lender on a resolution. (8) This loan is a $125.0 million construction facility. Advances under the loan are subject to costs incurred.
Schedule of combined balance sheets for the unconsolidated joint ventures	The combined balance sheets for the unconsolidated joint ventures, at September 30, 2022 and December 31, 2021 are as follows (in thousands): September 30, 2022 December 31, 2021 Assets (1) Commercial real estate property, net $ 15,729,750 $ 14,763,874 Cash and restricted cash 720,053 768,510 Tenant and other receivables, related party receivables, and deferred rents receivable 605,766 533,455 Other assets 2,604,858 1,776,030 Total assets $ 19,660,427 $ 17,841,869 Liabilities and equity (1) Mortgages and other loans payable, net $ 12,198,081 $ 11,085,876 Deferred revenue 1,117,156 1,158,242 Lease liabilities 987,390 980,595 Other liabilities 443,393 352,499 Equity 4,914,407 4,264,657 Total liabilities and equity $ 19,660,427 $ 17,841,869 Company's investments in unconsolidated joint ventures $ 3,185,800 $ 2,997,934 (1) At September 30, 2022, $538.8 million of net unamortized basis differences between the amount at which our investments are carried and our share of equity in net assets of the underlying property will be amortized through equity in net income (loss) from unconsolidated joint ventures over the remaining life of the underlying items having given rise to the differences.
Schedule of combined statements of income for the unconsolidated joint ventures	The combined statements of operations for the unconsolidated joint ventures, from acquisition date through the three and nine months ended September 30, 2022 and 2021, are as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Total revenues $ 330,705 $ 314,288 $ 997,670 $ 905,017 Operating expenses 59,841 54,157 173,327 142,800 Real estate taxes 66,594 58,367 186,710 166,974 Operating lease rent 6,616 5,644 19,465 16,931 Interest expense, net of interest income 112,747 90,710 305,977 248,588 Amortization of deferred financing costs 7,116 10,661 20,568 24,249 Depreciation and amortization 116,511 119,537 343,183 351,372 Total expenses 369,425 339,076 1,049,230 950,914 Loss on early extinguishment of debt — (1,158) (467) (2,484) Net loss before (loss) gain on sale $ (38,720) $ (25,946) $ (52,027) $ (48,381) Company's equity in net loss from unconsolidated joint ventures $ (21,997) $ (15,487) $ (31,262) $ (31,321)

Deferred Costs (Tables)

Deferred Costs (Tables)	9 Months Ended
	Sep. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of components of deferred costs	Deferred costs as of September 30, 2022 and December 31, 2021 consisted of the following (in thousands): September 30, 2022 December 31, 2021 Deferred leasing costs $ 410,655 $ 400,419 Less: accumulated amortization (294,703) (275,924) Deferred costs, net $ 115,952 $ 124,495

Mortgages and Other Loans Pay_2

Mortgages and Other Loans Payable (Tables)	9 Months Ended
	Sep. 30, 2022
Mortgages and Other Loans Payable
Schedule of first mortgages and other loans payable collateralized by the respective properties and assignment of leases	The mortgages and other loans payable collateralized by the respective properties and assignment of leases or debt investments as of September 30, 2022 and December 31, 2021, respectively, were as follows (dollars in thousands): Property Current Maturity Final Maturity Date (1) Interest Rate (2) September 30, 2022 December 31, 2021 Fixed Rate Debt: 420 Lexington Avenue October 2024 October 2040 3.99% $ 284,492 $ 288,660 Landmark Square January 2027 January 2027 4.90% 100,000 100,000 485 Lexington Avenue February 2027 February 2027 4.25% 450,000 450,000 245 Park Avenue June 2027 June 2027 4.22% 1,712,750 — 100 Church Street — 200,212 1080 Amsterdam — 34,537 Total fixed rate debt $ 2,547,242 $ 1,073,409 Floating Rate Debt: 7 Dey / 185 Broadway (3) November 2022 November 2023 L+ 2.85% $ 210,148 $ 198,169 719 Seventh Avenue September 2023 September 2023 L+ 1.20% 50,000 50,000 690 Madison Avenue July 2024 July 2025 L+ 1.50% 60,000 60,000 100 Church Street June 2025 June 2027 S+ 4.98% 370,000 — 609 Fifth Avenue — 52,882 2017 Master Repurchase Agreement (4) — — Total floating rate debt $ 690,148 $ 361,051 Total fixed rate and floating rate debt $ 3,237,390 $ 1,434,460 Mortgages reclassed to liabilities related to assets held for sale — (34,537) Total mortgages and other loans payable $ 3,237,390 $ 1,399,923 Deferred financing costs, net of amortization (8,374) (5,537) Total mortgages and other loans payable, net $ 3,229,016 $ 1,394,386 (1) Reflects exercise of all available options. The ability to exercise extension options may be subject to certain tests based on the operating performance of the property. (2) Interest rate as of September 30, 2022, taking into account interest rate hedges in effect during the period. Floating rate debt is presented with the stated spread over the 30-day LIBOR ("L") or Term SOFR ("S"), unless otherwise specified. (3) This loan is a $225.0 million construction facility, with reductions in interest cost based on meeting certain conditions, and has an initial three year term with two one year extension options. Both one year extension options were exercised in October 2021 and 2022, respectively. Advances under the loan are subject to incurred costs and funded equity requirements. (4) The facility matured in June 2022 and the Company is in discussions with the lender on an extension. As of September 30, 2022, there was no outstanding balance on the facility.

Corporate Indebtedness (Tables)

Corporate Indebtedness (Tables)	9 Months Ended
	Sep. 30, 2022
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 September 30, 2022 and December 31, 2021, respectively, by scheduled maturity date (dollars in thousands): Issuance September 30, 2022 September 30, 2022 December 31, Interest Rate (1) Initial Term Maturity Date October 5, 2017 (2) $ 500,000 $ 499,996 $ 499,913 3.25 % 5 October 2022 December 17, 2015 (3) 100,000 100,000 100,000 4.27 % 10 December 2025 November 15, 2012 — — 301,002 — % 10 December 2022 $ 600,000 $ 599,996 $ 900,915 Deferred financing costs, net — (334) (1,607) $ 600,000 $ 599,662 $ 899,308 (1) Interest rate as of September 30, 2022, taking into account interest rate hedges in effect during the period. (2) Issued by the Operating Partnership with the Company as the guarantor. In October 2022, these notes were repaid at maturity. (3) Issued by the Company and the Operating Partnership as co-obligors.
Schedule of combined aggregate principal maturities	Combined aggregate principal maturities of mortgages and other loans payable, the 2021 credit facility, trust preferred securities, senior unsecured notes and our share of joint venture debt as of September 30, 2022, including as-of-right extension options, were as follows (in thousands): Scheduled Principal Revolving Unsecured Term Loans Trust Senior Total Joint Remaining 2022 $ 1,428 $ 210,148 $ — $ — $ — $ 500,000 $ 711,576 $ 412,928 2023 5,827 50,000 — — — — 55,827 750,513 2024 4,488 332,749 — 200,000 — — 537,237 893,994 2025 — 370,000 — — — 100,000 470,000 1,540,234 2026 — — — — — — — 107,137 Thereafter — 2,262,750 450,000 1,050,000 100,000 — 3,862,750 2,429,821 $ 11,743 $ 3,225,647 $ 450,000 $ 1,250,000 $ 100,000 $ 600,000 $ 5,637,390 $ 6,134,627
Schedule of consolidated interest expense, excluding capitalized interest	Consolidated interest expense, excluding capitalized interest, was comprised of the following (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Interest expense before capitalized interest $ 40,553 $ 34,054 $ 105,165 $ 112,423 Interest on financing leases 1,099 1,229 3,453 4,215 Interest capitalized (19,659) (20,141) (55,952) (58,395) Interest income (169) (335) (812) (1,088) Interest expense, net $ 21,824 $ 14,807 $ 51,854 $ 57,155

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2022
Related Party Transactions [Abstract]
Schedule of amounts due from/to related parties	Amounts due from joint ventures and related parties as of September 30, 2022 and December 31, 2021 consisted of the following (in thousands): September 30, 2022 December 31, 2021 Due from joint ventures $ 26,539 $ 28,204 Other 748 1,204 Related party receivables $ 27,287 $ 29,408

Noncontrolling Interests on t_2

Noncontrolling Interests on the Company's Consolidated Financial Statements (Tables)	9 Months Ended
	Sep. 30, 2022
Noncontrolling Interest [Abstract]
Schedule of noncontrolling interest	Below is a summary of the activity relating to the noncontrolling interests in the Operating Partnership for the nine months ended September 30, 2022 and the twelve months ended December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Balance at beginning of period $ 344,252 $ 358,262 Distributions (12,635) (15,749) Issuance of common units 16,408 18,678 Redemption and conversion of common units (35,316) (53,289) Net (loss) income (1,831) 25,457 Accumulated other comprehensive income allocation 6,404 1,042 Fair value adjustment (23,539) 9,851 Balance at end of period $ 293,743 $ 344,252
Schedule of preferred unit activity	Below is a summary of the preferred units of limited partnership interest in the Operating Partnership as of September 30, 2022: Issuance Stated Distribution Rate Number of Units Authorized Number of Units Issued Number of Units Outstanding Annual Dividend Per Unit (1) Liquidation Preference Per Unit (2) Conversion Price Per Unit (3) Date of Issuance Series A (4) 3.50 % 109,161 109,161 109,161 $ 35.0000 $ 1,000.00 $ — August 2015 Series F 7.00 % 60 60 60 70.0000 1,000.00 29.12 January 2007 Series K 3.50 % 700,000 563,954 341,677 0.8750 25.00 134.67 August 2014 Series L 4.00 % 500,000 378,634 372,634 1.0000 25.00 — August 2014 Series P 4.00 % 200,000 200,000 200,000 1.0000 25.00 — July 2015 Series Q 3.50 % 268,000 268,000 268,000 0.8750 25.00 148.95 July 2015 Series R 3.50 % 400,000 400,000 400,000 0.8750 25.00 154.89 August 2015 Series S 4.00 % 1,077,280 1,077,280 1,077,280 1.0000 25.00 — August 2015 Series V 3.50 % 40,000 40,000 40,000 0.8750 25.00 — May 2019 Series W (5) (6) 1 1 1 (6) (6) (6) January 2020 (1) Dividends are cumulative, subject to certain provisions. (2) Units are redeemable at any time at par for cash at the option of the unit holder unless otherwise specified. (3) If applicable, 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) the amount shown in the table. (4) Issued through a consolidated subsidiary. The units are convertible on a one-for-one basis, into the Series B Preferred Units of limited partnership interest, or the Subsidiary Series B Preferred Units. The Subsidiary Series B Preferred Units can be converted at any time, at the option of the unitholder, into a number of common stock equal to 6.71348 shares of common stock for each Subsidiary Series B Preferred Unit. As of September 30, 2022, no Subsidiary Series B Preferred Units have been issued. (5) The Series W preferred unit was issued in January 2020 in exchange for the then-outstanding Series O preferred unit. The holder of the Series W preferred unit is entitled to quarterly dividends in an amount calculated as (i) 1,350 multiplied by (ii) the current distribution per common unit of limited partnership in SL Green Operating Partnership. The holder has the right to require the Operating Partnership to repurchase the Series W unit for cash, or convert the Series W unit for Class B units, in each case at a price that is determined based on the closing price of the Company's common stock at the time such right is exercised. The unit's liquidation preference is the fair market value of the unit plus accrued distributions at the time of a liquidation event. Below is a summary of the activity relating to the preferred units in the Operating Partnership for the nine months ended September 30, 2022 and the twelve months ended December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Balance at beginning of period $ 196,075 $ 202,169 Issuance of preferred units — — Redemption of preferred units (17,967) (6,040) Dividends paid on preferred units (4,749) (6,760) Accrued dividends on preferred units 4,584 6,706 Balance at end of period $ 177,943 $ 196,075

Stockholders' Equity of the C_2

Stockholders' Equity of the Company (Tables)	9 Months Ended
	Sep. 30, 2022
Stockholders' Equity Note [Abstract]
Class of treasury stock	As of September 30, 2022, share repurchases executed under the program, excluding the redemption of OP units, were as follows: Period Shares repurchased Average price paid per share Cumulative number of shares repurchased as part of the repurchase plan or programs Year ended 2017 7,865,206 $107.81 7,865,206 Year ended 2018 9,187,480 $102.06 17,052,686 Year ended 2019 4,333,260 $88.69 21,385,946 Year ended 2020 8,276,032 $64.30 29,661,978 Year ended 2021 4,474,649 $75.44 34,136,627 Nine months September 30, 2022 1,971,092 $76.69 36,107,719
Schedule of common stock issued and proceeds received dividend reinvestments	The following table summarizes SL Green common stock issued, and proceeds received from dividend reinvestments and/or stock purchases under the DRSPP for the three and nine months ended September 30, 2022 and 2021, respectively (dollars in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Shares of common stock issued 2,933 1,944 5,827 8,770 Dividend reinvestments/stock purchases under the DRSPP $ 140 $ 146 $ 339 $ 613
Schedule of earnings per share	SL Green's earnings per share for the three and nine months ended September 30, 2022 and 2021 are computed as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Numerator 2022 2021 2022 2021 Basic Earnings: Income (loss) attributable to SL Green common stockholders $ 7,377 $ 388,205 $ (28,748) $ 486,073 Less: distributed earnings allocated to participating securities (505) (357) (1,516) (1,071) Less: undistributed earnings allocated to participating securities — (1,977) — (1,790) Net income (loss) attributable to SL Green common stockholders (numerator for basic earnings per share) $ 6,872 $ 385,871 $ (30,264) $ 483,212 Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares 505 357 (484) 1,071 Add back: undistributed earnings allocated to participating securities — 1,977 — 1,790 Add back: effect of dilutive securities (redemption of units to common shares) 491 22,683 (1,831) 28,489 Net income (loss) attributable to SL Green common stockholders (numerator for diluted earnings per share) $ 7,868 $ 410,888 $ (32,579) $ 514,562 Three Months Ended September 30, Nine Months Ended September 30, Denominator 2022 2021 2022 2021 Basic Shares: Weighted average common stock outstanding 63,949 64,856 63,971 66,248 Effect of Dilutive Securities: Operating Partnership units redeemable for common shares 4,088 3,834 4,104 4,024 Stock-based compensation plans 860 806 1,052 676 Contingently issuable shares — — 122 101 Diluted weighted average common stock outstanding 68,897 69,496 69,249 71,049

Partners' Capital of the Oper_2

Partners' Capital of the Operating Partnership (Tables)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Schedule of calculation of numerator and denominator in earnings per unit	The Operating Partnership's earnings per unit for the three and nine months ended September 30, 2022 and 2021, respectively, are computed as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, Numerator 2022 2021 2022 2021 Basic Earnings: Net income (loss) attributable to SLGOP common unitholders (numerator for diluted earnings per unit) $ 7,868 $ 410,888 $ (30,579) $ 514,562 Less: distributed earnings allocated to participating securities (505) (357) (1,516) (1,071) Less: undistributed earnings allocated to participating securities — (1,977) — (1,790) Net income (loss) attributable to SLGOP common unitholders (numerator for basic earnings per unit) $ 7,363 $ 408,554 $ (32,095) $ 511,701 Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares 505 357 (484) 1,071 Add back: undistributed earnings allocated to participating securities — 1,977 — 1,790 Net income (loss) attributable to SLGOP common unitholders (numerator for diluted earnings per unit) $ 7,868 $ 410,888 $ (32,579) $ 514,562 Three Months Ended September 30, Nine Months Ended September 30, Denominator 2022 2021 2022 2021 Basic units: Weighted average common units outstanding 68,037 68,690 68,075 70,272 Effect of Dilutive Securities: Stock-based compensation plans 860 806 1,052 676 Contingently issuable units — — 122 101 Diluted weighted average common units outstanding 68,897 69,496 69,249 71,049

Share-based Compensation (Table

Share-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
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 September 30, 2022 and December 31, 2021, and changes during the nine months ended September 30, 2022 and year ended December 31, 2021 are as follows: September 30, 2022 December 31, 2021 Options Outstanding Weighted Average Options Outstanding Weighted Average Balance at beginning of period 394,089 $ 100.56 761,686 $ 105.76 Exercised — — (11,314) 72.30 Lapsed or canceled (80,609) 112.14 (356,283) 112.56 Balance at end of period 313,480 $ 97.59 394,089 $ 100.56 Options exercisable at end of period 313,480 $ 97.59 394,089 $ 100.56
Summary of restricted stock and charges during the period	A summary of the Company's restricted stock as of September 30, 2022 and December 31, 2021 and changes during the nine months ended September 30, 2022 and the year ended December 31, 2021, are as follows: September 30, 2022 December 31, 2021 Balance at beginning of period 3,459,363 3,337,545 Granted 259,015 141,515 Canceled (15,584) (19,697) Balance at end of period 3,702,794 3,459,363 Vested during the period 118,255 122,759 Compensation expense recorded $ 7,083,717 $ 8,497,054 Total fair value of restricted stock granted during the period $ 14,807,004 $ 9,214,531

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Schedule of accumulated other comprehensive loss	The following tables set forth the changes in accumulated other comprehensive income (loss) by component as of September 30, 2022 (in thousands): Net unrealized gain (loss) on derivative instruments ( 1 ) SL Green’s share of joint venture net unrealized gain (loss) on derivative instruments ( 2 ) Net unrealized gain on marketable securities Total Balance at December 31, 2021 $ (25,881) $ (21,994) $ 1,117 $ (46,758) Other comprehensive gain (loss) before reclassifications 78,865 21,671 (609) 99,927 Amounts reclassified from accumulated other comprehensive income 2,526 1,879 — 4,405 Balance at September 30, 2022 $ 55,510 $ 1,556 $ 508 $ 57,574 (1) Amount reclassified from accumulated other comprehensive income (loss) is included in interest expense in the respective consolidated statements of operations. As of September 30, 2022 and December 31, 2021, the deferred net gains from these terminated hedges, which is included in accumulated other comprehensive income (loss) relating to net unrealized loss on derivative instruments, was $(0.5) million and $(0.6) million, respectively. (2) Amount reclassified from accumulated other comprehensive income (loss) is included in equity in net loss from unconsolidated joint ventures in the respective consolidated statements of operations.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2022
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 as of September 30, 2022 and December 31, 2021 (in thousands): September 30, 2022 Total Level 1 Level 2 Level 3 Assets: Marketable securities available-for-sale $ 12,039 $ — $ 12,039 $ — Interest rate cap and swap agreements (included in Other assets) 59,285 — 59,285 — Liabilities: Interest rate cap and swap agreements (included in Other liabilities) $ 3,592 $ — $ 3,592 $ — December 31, 2021 Total Level 1 Level 2 Level 3 Assets: Marketable securities available-for-sale $ 24,146 $ — $ 24,146 $ — Interest rate cap and swap agreements (included in Other assets) 1,896 — 1,896 — Liabilities: Interest rate cap and swap agreements (included in Other liabilities) $ 29,912 $ — $ 29,912 $ —
Fair value, by balance sheet grouping	The following table provides the carrying value and fair value of these financial instruments as of September 30, 2022 and December 31, 2021 (in thousands): September 30, 2022 December 31, 2021 Carrying Value (1) Fair Value Carrying Value (1) Fair Value Debt and preferred equity investments $ 663,985 (2) $ 1,088,723 (2) Fixed rate debt $ 4,497,238 $ 4,284,029 $ 3,274,324 $ 3,336,463 Variable rate debt 1,140,148 1,133,490 801,051 800,672 $ 5,637,386 $ 5,417,519 $ 4,075,375 $ 4,137,135 (1) Amounts exclude net deferred financing costs. (2) As of September 30, 2022, debt and preferred equity investments had an estimated fair value ranging between $0.6 billion and $0.7 billion. As of December 31, 2021, debt and preferred equity investments had an estimated fair value ranging between $1.0 billion and $1.1 billion.

Financial Instruments_ Deriva_2

Financial Instruments: Derivatives and Hedging (Tables)	9 Months Ended
	Sep. 30, 2022
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 value at inception and fair value of our consolidated derivative financial instruments as of September 30, 2022 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 (dollars in thousands). Notional Strike Effective Expiration Balance Sheet Location Fair Interest Rate Cap $ 111,869 3.500 % November 2021 November 2022 Other Assets $ 8 Interest Rate Swap 100,000 0.212 % January 2021 January 2023 Other Assets 1,173 Interest Rate Swap 400,000 0.184 % January 2022 February 2023 Other Assets 4,892 Interest Rate Swap 50,000 0.633 % February 2022 February 2023 Other Assets 518 Interest Rate Swap 100,000 1.163 % November 2021 July 2023 Other Assets 2,514 Interest Rate Swap 200,000 1.133 % November 2021 July 2023 Other Assets 5,076 Interest Rate Cap 600,000 4.080 % September 2022 September 2023 Other Liabilities (2,822) Interest Rate Swap 150,000 2.700 % December 2021 January 2024 Other Assets 2,949 Interest Rate Swap 200,000 4.590 % November 2022 January 2024 Other Liabilities (476) Interest Rate Swap 200,000 4.511 % November 2022 January 2024 Other Liabilities (294) Interest Rate Swap 150,000 2.721 % December 2021 January 2026 Other Assets 6,104 Interest Rate Swap 200,000 2.762 % December 2021 January 2026 Other Assets 7,963 Interest Rate Swap 100,000 3.003 % February 2023 February 2027 Other Assets 3,451 Interest Rate Swap 100,000 2.833 % February 2023 February 2027 Other Assets 4,069 Interest Rate Swap 50,000 2.563 % February 2023 February 2027 Other Assets 2,527 Interest Rate Swap 200,000 2.691 % February 2023 February 2027 Other Assets 9,175 Interest Rate Swap 300,000 2.966 % July 2023 May 2027 Other Assets 8,814 Interest Rate Swap 100,000 3.756 % January 2023 January 2028 Other Assets 52 $ 55,693 The following table summarizes the notional value at inception and fair value of our joint ventures' derivative financial instruments as of September 30, 2022 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 (dollars in thousands). Notional Strike Effective Expiration Classification Fair Interest Rate Cap $ 23,000 4.750 % January 2021 January 2023 Asset $ — Interest Rate Cap 220,000 4.000 % February 2022 February 2023 Asset 188 Interest Rate Cap 510,000 3.000 % December 2021 June 2023 Asset 4,589 Interest Rate Cap 272,000 4.000 % July 2022 August 2023 Asset 979 Interest Rate Cap 400,000 3.500 % September 2022 September 2023 Asset 3,073 Interest Rate Cap 1,075,000 4.080 % September 2022 September 2023 Asset 5,070 Interest Rate Cap 125,000 4.080 % September 2022 September 2023 Asset 590 Interest Rate Cap 246,155 0.550 % February 2022 May 2024 Asset 23,192 Interest Rate Cap 246,155 0.550 % February 2022 May 2024 Asset 23,161 Interest Rate Swap 177,000 1.669 % March 2016 February 2026 Asset 13,348 $ 74,190
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 operations for the three months ended September 30, 2022 and 2021, respectively (in thousands): Amount of Gain (Loss) Location of Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income Amount of Loss Reclassified from Three Months Ended September 30, Three Months Ended September 30, Derivative 2022 2021 2022 2021 Interest Rate Swaps/Caps $ 44,057 $ (450) Interest expense $ 3,061 $ (4,416) Share of unconsolidated joint ventures' derivative instruments 9,354 (143) Equity in net loss from unconsolidated joint ventures (138) (2,792) $ 53,411 $ (593) $ 2,923 $ (7,208) 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 operations for the nine months ended September 30, 2022 and 2021, respectively (in thousands): Amount of Gain (Loss) Recognized in Location of Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income Amount of Loss Reclassified from Nine Months Ended September 30, Nine Months Ended September 30, Derivative 2022 2021 2022 2021 Interest Rate Swaps/Caps $ 83,768 $ 7,305 Interest expense $ (2,673) $ (13,359) Share of unconsolidated joint ventures' derivative instruments 22,951 (20,641) Equity in net loss from unconsolidated joint ventures (1,986) (6,542) $ 106,719 $ (13,336) $ (4,659) $ (19,901)

Lease Income (Tables)

Lease Income (Tables)	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Operating lease, lease income	The components of lease income from operating leases during the three and nine months ended September 30, 2022 and 2021 were as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Fixed lease payments $ 142,778 $ 142,979 $ 416,033 $ 473,466 Variable lease payments 19,990 12,660 58,283 58,634 Total lease payments (1) $ 162,768 $ 155,639 $ 474,316 $ 532,100 Amortization of acquired above and below-market leases 184 (276) (101) (4,037) Total rental revenue $ 162,952 $ 155,363 $ 474,215 $ 528,063 (1) Amounts include $55.7 million and $169.9 million of sublease income during the three and nine months ended September 30, 2022 and $52.0 million and $175.5 million of sublease income during the three and nine months ended September 30, 2021, respectively.
Sales-type lease, lease income	The components of lease income from sales-type leases during the three and nine months ended September 30, 2022 and 2021 were as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2022 2021 2022 2021 Interest income (1) $ 1,099 $ 1,108 $ 3,286 $ 3,313 (1) These amounts are included in Other income in our consolidated statements of operations.

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Schedule of selected results of operations and selected asset information	Selected consolidated results of operations for the three and nine months ended September 30, 2022 and 2021, and selected asset information as of September 30, 2022 and December 31, 2021, regarding our operating segments are as follows (in thousands): Real Estate Segment Debt and Preferred Equity Segment Total Company Total revenues Three months ended: September 30, 2022 $ 182,943 $ 29,513 $ 212,456 September 30, 2021 185,129 20,072 205,201 Nine months ended: September 30, 2022 $ 532,057 $ 69,808 $ 601,865 September 30, 2021 589,958 59,452 649,410 Net (loss) income Three months ended: September 30, 2022 $ (8,934) $ 21,145 $ 12,211 September 30, 2021 398,377 17,157 415,534 Nine months ended: September 30, 2022 $ (65,824) $ 53,571 $ (12,253) September 30, 2021 478,589 50,224 528,813 Total assets As of: September 30, 2022 $ 12,046,743 $ 669,307 $ 12,716,050 December 31, 2021 9,974,140 1,092,489 11,066,629

Organization and Basis of Pre_3

Organization and Basis of Presentation - Additional Information (Details)						1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 07, 2022	Jan. 18, 2022 $ / shares shares	Jan. 10, 2022	Jan. 07, 2022 $ / shares	Dec. 02, 2021 $ / shares	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($) ft² building $ / shares	Sep. 30, 2021 $ / shares	Sep. 30, 2022 USD ($) ft² building $ / shares shares	Sep. 30, 2021 $ / shares	Dec. 31, 2021
Organization
Cash distribution declared, per common share (in dollars per share)							$ 0.932	$ 0.938	$ 2.797	$ 2.813
Volume weighted average share price (in dollars per share)				$ 79.71
Number of buildings | building							52		52
Area of office building (sqft) | ft²							30,122,545		30,122,545
Debt and preferred equity investments including investments held by unconsolidated joint ventures | $							$ 670,600,000		$ 670,600,000
Debt and preferred equity investments and other financing receivables included in other balance sheet items | $							$ 8,500,000		$ 8,500,000
Number of shares to be received on redemption of one unit of limited partnership interests (shares) | shares									1
Line of Credit | Subsequent Event | Unsecured Debt
Organization
Debt instrument face amount | $						$ 400,000,000
Debt instrument renewal term						6 months
Debt fact amount, option to increase capacity | $						$ 500,000,000
Line of Credit | Subsequent Event | SOFR | Unsecured Debt
Organization
Interest rate added to base rate (as a percent)	1.40%
Shareholder Election, Cash Option Subject to Proration
Organization
Common stock, dividends, per share, cash paid (in dollars per share)		$ 0.3976
Common stock, dividends, per share, stock issued (in shares) | shares		0.0295
Shareholder Election, Stock Option
Organization
Common stock, dividends, per share, stock issued (in shares) | shares		0.0345
Managed office properties
Organization
Number of buildings | building							1		1
Area of office building (sqft) | ft²							300,000		300,000
Ordinary Dividend
Organization
Cash distribution declared, per common share (in dollars per share)					$ 0.3108
Special Dividend
Organization
Cash distribution declared, per common share (in dollars per share)					$ 2.4392
Common Stock
Organization
Reverse stock split conversion ratio			1.03060
SL Green Operating Partnership
Organization
Cash distribution declared, per common share (in dollars per share)							$ 0.932	$ 0.938	$ 2.797	$ 2.813
Service Corporation
Organization
Percentage of ownership in SL Green Management LLC owned by operating partnership (percent)									95%
Operating Partnership | SL Green Operating Partnership
Organization
Noncontrolling interest in the operating partnership (as a percent)							5.52%		5.52%		5.57%
SL Green Management | SL Green Management LLC
Organization
Percentage of ownership in SL Green Management LLC owned by operating partnership (percent)									100%

Organization and Basis of Pre_4

Organization and Basis of Presentation - Schedule of Commercial Office Properties (Details)	Sep. 30, 2022 ft² building
Real estate properties
Number of Buildings | building	52
Approximate Square Feet unaudited (sqft)	30,122,545
Weighted Average Occupancy unaudited (as a percent)	90.90%
Commercial properties
Real estate properties
Number of Buildings | building	51
Approximate Square Feet unaudited (sqft)	29,982,163
Weighted Average Occupancy unaudited (as a percent)	91%
Consolidated
Real estate properties
Number of Buildings | building	28
Approximate Square Feet unaudited (sqft)	13,075,927
Consolidated | Commercial properties
Real estate properties
Number of Buildings | building	27
Approximate Square Feet unaudited (sqft)	12,935,545
Unconsolidated
Real estate properties
Number of Buildings | building	24
Approximate Square Feet unaudited (sqft)	17,046,618
Unconsolidated | Commercial properties
Real estate properties
Number of Buildings | building	24
Approximate Square Feet unaudited (sqft)	17,046,618
Manhattan
Real estate properties
Number of Buildings | building	44
Approximate Square Feet unaudited (sqft)	29,119,363
Weighted Average Occupancy unaudited (as a percent)	91.40%
Manhattan | Office
Real estate properties
Number of Buildings | building	25
Approximate Square Feet unaudited (sqft)	23,961,519
Weighted Average Occupancy unaudited (as a percent)	91.40%
Manhattan | Retail
Real estate properties
Number of Buildings | building	11
Approximate Square Feet unaudited (sqft)	319,884
Weighted Average Occupancy unaudited (as a percent)	91.20%
Manhattan | Development/Redevelopment
Real estate properties
Number of Buildings | building	8
Approximate Square Feet unaudited (sqft)	4,837,960
Manhattan | Residential
Real estate properties
Number of Buildings | building	1
Approximate Square Feet unaudited (sqft)	140,382
Weighted Average Occupancy unaudited (as a percent)	85.60%
Manhattan | Consolidated
Real estate properties
Number of Buildings | building	20
Approximate Square Feet unaudited (sqft)	12,072,745
Manhattan | Consolidated | Office
Real estate properties
Number of Buildings | building	13
Approximate Square Feet unaudited (sqft)	9,963,138
Manhattan | Consolidated | Retail
Real estate properties
Number of Buildings | building	2
Approximate Square Feet unaudited (sqft)	17,888
Manhattan | Consolidated | Retail | 7 Dey / 185 Broadway
Real estate properties
Approximate Square Feet unaudited (sqft)	140,382
Manhattan | Consolidated | Development/Redevelopment
Real estate properties
Number of Buildings | building	5
Approximate Square Feet unaudited (sqft)	2,091,719
Manhattan | Consolidated | Residential
Real estate properties
Number of Buildings | building	1
Approximate Square Feet unaudited (sqft)	140,382
Manhattan | Consolidated | Residential | 7 Dey / 185 Broadway
Real estate properties
Approximate Square Feet unaudited (sqft)	50,206
Manhattan | Unconsolidated
Real estate properties
Number of Buildings | building	24
Approximate Square Feet unaudited (sqft)	17,046,618
Manhattan | Unconsolidated | Office
Real estate properties
Number of Buildings | building	12
Approximate Square Feet unaudited (sqft)	13,998,381
Manhattan | Unconsolidated | Retail
Real estate properties
Number of Buildings | building	9
Approximate Square Feet unaudited (sqft)	301,996
Manhattan | Unconsolidated | Development/Redevelopment
Real estate properties
Number of Buildings | building	3
Approximate Square Feet unaudited (sqft)	2,746,241
Manhattan | Unconsolidated | Residential
Real estate properties
Number of Buildings | building	0
Approximate Square Feet unaudited (sqft)	0
Suburban | Office
Real estate properties
Number of Buildings | building	7
Approximate Square Feet unaudited (sqft)	862,800
Weighted Average Occupancy unaudited (as a percent)	80.10%
Suburban | Consolidated | Office
Real estate properties
Number of Buildings | building	7
Approximate Square Feet unaudited (sqft)	862,800
Suburban | Unconsolidated | Office
Real estate properties
Number of Buildings | building	0
Approximate Square Feet unaudited (sqft)	0

Significant Accounting Polici_4

Significant Accounting Policies - Investments in Commercial Real Estate Properties (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Investment in Commercial Real Estate Properties
Rental revenue decrease from amortization of acquired leases	$ 200,000	$ 300,000	$ 100,000	$ 4,000,000
Identified intangible assets (included in other assets):
Gross amount	403,552,000		403,552,000		$ 199,722,000
Accumulated amortization	(179,211,000)		(179,211,000)		(182,643,000)
Net	224,341,000		224,341,000		17,079,000
Identified intangible liabilities (included in deferred revenue):
Gross amount	361,338,000		361,338,000		212,767,000
Accumulated amortization	(203,064,000)		(203,064,000)		(210,262,000)
Net	158,274,000		158,274,000		2,505,000
Net intangible assets reclassified to assets held for sale	0		0		1,800,000
Net intangible liabilities reclassified to liabilities relates to assets held for sale	$ 0		$ 0		$ 0
Minimum | Above-market leases
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)			1 year
Minimum | Below-market leases
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)			1 year
Minimum | In-place leases
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)			1 year
Maximum | Above-market leases
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)			15 years
Maximum | Below-market leases
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)			15 years
Maximum | In-place leases
Investment in Commercial Real Estate Properties
Estimated useful life of other intangible assets (in years)			15 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

Significant Accounting Polici_5

Significant Accounting Policies - Investment in Marketable Securities (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($) security	Dec. 31, 2021 USD ($) security
Investment in Marketable Securities
Total marketable securities available-for-sale	$ 12,039,000		$ 12,039,000		$ 24,146,000
Equity marketable securities	4,496,000		4,496,000		10,606,000
Total investment in marketable securities	16,535,000		16,535,000		34,752,000
Marketable securities, unrealized gain (loss)	100,000	$ 2,000,000	(6,100,000)	$ 100,000
Amount of disposal of equity marketable securities	0		0
Proceeds from sale of marketable securities	7,800,000	$ 0	7,800,000
Proceeds from repayment of debt marketable securities	$ 3,700,000		$ 3,700,000	$ 4,500,000
Number of marketable securities sold | security	1		1
Number of marketable securities repaid | security	1		1	1
Commercial mortgage-backed securities
Investment in Marketable Securities
Total marketable securities available-for-sale	$ 12,039,000		$ 12,039,000		24,146,000
Cost basis of commercial mortgage-backed securities	$ 11,500,000		$ 11,500,000		$ 23,000,000
Number of securities in continuous unrealized loss position | security					1
Unrealized loss					$ 600,000
Fair value of security in a continuous unrealized loss position for less than 12 months					$ 7,200,000

Significant Accounting Polici_6

Significant Accounting Policies - Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income taxes
Federal, state and local tax provision	$ (100,000)	$ 0	$ 2,200,000	$ 1,500,000

Significant Accounting Polici_7

Significant Accounting Policies - Concentrations of Credit Risk/Accounting Standards Updates (Details) - Annualized rent	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022 tenant
Customer concentration
Concentration of Credit Risk
Number of tenants (tenants)		1
Maximum percentage of annualized rent for any one tenant not individually disclosed (percent) (more than)	5%	5%
Investment Property Concentration Risk | One Vanderbilt Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	14.30%
Investment Property Concentration Risk | 11 Madison Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	8.60%
Investment Property Concentration Risk | 1185 Avenue of the Americas
Concentration of Credit Risk
Percentage of concentration (percent)	6.90%
Investment Property Concentration Risk | 420 Lexington Ave
Concentration of Credit Risk
Percentage of concentration (percent)	6.80%
Investment Property Concentration Risk | 1515 Broadway
Concentration of Credit Risk
Percentage of concentration (percent)	6.40%
Investment Property Concentration Risk | 280 Park Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	5.60%
Investment Property Concentration Risk | 919 Third Avenue
Concentration of Credit Risk
Percentage of concentration (percent)	5%
Tenant 1 | Customer concentration
Concentration of Credit Risk
Percentage of concentration (percent)		6%

Property Acquisitions - Schedul

Property Acquisitions - Schedule of 2022 Acquisitions (Details) $ in Millions	Sep. 30, 2022 USD ($) ft²
Property Acquisitions
Area of office building (sqft)	30,122,545
245 Park Avenue
Property Acquisitions
Area of office building (sqft)	1,782,793
Gross Asset Valuation (in millions) | $	$ 1,960

Properties Held for Sale and _3

Properties Held for Sale and Property Dispositions (Details) $ in Millions	1 Months Ended
	Jun. 30, 2022 USD ($) ft²	May 31, 2022 USD ($) ft²	Apr. 30, 2022 USD ($) ft²	Feb. 28, 2022 USD ($) ft²	Sep. 30, 2022 USD ($) ft²
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of office building (sqft) | ft²					30,122,545
707 Eleventh Avenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of office building (sqft) | ft²				159,720
Sales price				$ 95
Gain (loss)				$ (0.8)
1080 Amsterdam Avenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of office building (sqft) | ft²			85,250
Sales price			$ 42.7
Gain (loss)			$ 17.9
1591-1597 Broadway
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of office building (sqft) | ft²		7,684
Sales price		$ 121
Gain (loss)		$ (4.5)
609 Fifth Avenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of office building (sqft) | ft²	138,563
Sales price	$ 100.5
Gain (loss)	$ (80.2)
Properties Sold In 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Employee-related liabilities					$ 5.6

Debt and Preferred Equity Inv_3

Debt and Preferred Equity Investments - Rollforward of Net Book Balance (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance at beginning of period	$ 1,088,723	$ 1,076,542
Redemptions/sales/syndications/equity ownership/amortization	(509,052)	(201,446)
Net change in loan loss reserves	0	6,583
Balance at end of period	663,985	1,088,723
Debt investment originations/fundings/accretion
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Originations/Accretion	48,778	193,824
Preferred equity investment originations/accretion
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]
Originations/Accretion	$ 35,536	$ 13,220

Debt and Preferred Equity Inv_4

Debt and Preferred Equity Investments - Debt and Preferred Equity Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Carrying Value	$ 663,985	$ 1,088,723
Senior Financing	1,913,817
Total floating rate
Debt Instrument [Line Items]
Carrying Value	189,449
Face Value	189,978
Total fixed rate
Debt Instrument [Line Items]
Carrying Value	474,536
Face Value	482,631
Senior Mortgage Debt
Debt Instrument [Line Items]
Carrying Value	32,616
Senior Financing	$ 0
Weighted Average Yield at End of Period	7.21%
Senior Mortgage Debt | Total floating rate
Debt Instrument [Line Items]
Carrying Value	$ 32,616
Face Value	32,658
Senior Mortgage Debt | Total fixed rate
Debt Instrument [Line Items]
Carrying Value	0
Face Value	$ 0
Interest Rate	0%
Mezzanine Debt
Debt Instrument [Line Items]
Carrying Value	$ 513,480
Senior Financing	$ 1,663,817
Weighted Average Yield at End of Period	6.27%
Mezzanine Debt | Total floating rate
Debt Instrument [Line Items]
Carrying Value	$ 156,833
Face Value	157,320
Mezzanine Debt | Total fixed rate
Debt Instrument [Line Items]
Carrying Value	356,647
Face Value	364,742
Preferred Equity
Debt Instrument [Line Items]
Carrying Value	117,889
Senior Financing	$ 250,000
Weighted Average Yield at End of Period	6.55%
Preferred Equity | Total floating rate
Debt Instrument [Line Items]
Carrying Value	$ 0
Face Value	0
Preferred Equity | Total fixed rate
Debt Instrument [Line Items]
Carrying Value	117,889
Face Value	$ 117,889
Interest Rate	6.50%
Minimum | Mezzanine Debt | Total fixed rate
Debt Instrument [Line Items]
Interest Rate	7%
Maximum | Mezzanine Debt | Total fixed rate
Debt Instrument [Line Items]
Interest Rate	14.30%
LIBOR | Minimum | Senior Mortgage Debt | Total floating rate
Debt Instrument [Line Items]
Basis spread on variable rate	3.50%
LIBOR | Minimum | Mezzanine Debt | Total floating rate
Debt Instrument [Line Items]
Basis spread on variable rate	4.95%
LIBOR | Maximum | Mezzanine Debt | Total floating rate
Debt Instrument [Line Items]
Basis spread on variable rate	12.38%

Debt and Preferred Equity Inv_5

Debt and Preferred Equity Investments - Rollforward of Total Allowance for Loan Loss Reserves (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($) loan	Dec. 31, 2021 USD ($)
Loan loss reserve activity
Balance at beginning of year	$ 6,630	$ 13,213
Write-offs charged against the allowance	0	(6,583)
Balance at end of period	$ 6,630	$ 6,630
Number of financing receivables on non-accrual without allowance for loan loss | loan	1
Financing receivable on non-accrual without allowance	$ 225,400

Debt and Preferred Equity Inv_6

Debt and Preferred Equity Investments - Narrative (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) investment	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) segment investment	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) segment investment
Preferred equity investment
Number of investments, nonperforming | investment	1		1		1
Debt and preferred equity investments	$ 663,985,000		$ 663,985,000		$ 1,088,723,000
Recorded investment, past due	663,985,000		$ 663,985,000		$ 1,088,723,000
Number of portfolio segments of financial receivables (segment) | segment			1		1
Additional amount of financing receivables included in other assets	9,000,000		$ 9,000,000		$ 10,500,000
Current period provision for loan loss	0	$ 0	0	$ 0
Financing Receivables, Equal to Greater than 90 Days Past Due
Preferred equity investment
Recorded investment, past due	0		0		0
Preferred equity investments
Preferred equity investment
Debt and preferred equity investments	117,889,000		117,889,000		273,006,000
Total floating rate
Preferred equity investment
Debt and preferred equity investments	189,603,000		189,603,000		294,970,000
Total floating rate | Mortgage/Mezzanine Loan
Preferred equity investment
Debt and preferred equity investments	$ 6,900,000		$ 6,900,000		$ 6,900,000

Debt and Preferred Equity Inv_7

Debt and Preferred Equity Investments - Investment In Financing Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Carrying value	$ 663,985	$ 1,088,723
2022	0
2021	74,390
2020	168,223
Prior	421,372
1 - Low Risk Assets - Low probability of loss
Financing Receivable, Credit Quality Indicator [Line Items]
Carrying value	307,492	644,489
2022	0
2021	0
2020	168,223
Prior	139,269
2 - Watch List Assets - Higher potential for loss
Financing Receivable, Credit Quality Indicator [Line Items]
Carrying value	349,603	437,344
2022	0
2021	74,390
2020	0
Prior	275,213
3 - High Risk Assets - Loss more likely than not
Financing Receivable, Credit Quality Indicator [Line Items]
Carrying value	6,890	$ 6,890
2022	0
2021	0
2020	0
Prior	$ 6,890

Debt and Preferred Equity Inv_8

Debt and Preferred Equity Investments - Debt Investment (Details) - USD ($)	3 Months Ended		9 Months Ended		26 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Dec. 31, 2021
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Aggregate weighted average current yield (as a percent)			6.32%
Debt Investments Held [Abstract]
Carrying Value, Fixed Rate	$ 663,985,000		$ 663,985,000		$ 663,985,000	$ 1,088,723,000
Carrying Value	663,985,000		663,985,000		663,985,000	1,088,723,000
Investment income	29,513,000	$ 20,072,000	69,808,000	$ 59,452,000
Debt Investments in Mortgage Loans
Debt Investments Held [Abstract]
Future Funding Obligations	34,610,000		34,610,000		34,610,000
Senior Financing	1,663,818,000		1,663,818,000		1,663,818,000
Carrying Value	546,096,000		546,096,000		546,096,000	815,717,000
Allowance for loan loss	(6,630,000)		(6,630,000)		(6,630,000)	(6,630,000)
Mezzanine Loan Due June 2024
Debt Investments Held [Abstract]
Amount participated out	12,400,000		12,400,000		12,400,000
Loan interest income					0
Total fixed rate
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	961,001,000		961,001,000		961,001,000
Carrying Value, Fixed Rate	363,123,000		363,123,000		363,123,000	527,377,000
Total fixed rate | Mezzanine Loan Due June 2023
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	394,854,000		394,854,000		394,854,000
Carrying Value, Fixed Rate	225,367,000		225,367,000		225,367,000	225,367,000
Investment income					0
Total fixed rate | Mezzanine Loan Due June 2023, 2
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	281,147,000		281,147,000		281,147,000
Carrying Value, Fixed Rate	74,390,000		74,390,000		74,390,000	66,873,000
Total fixed rate | Mezzanine Loan Due June 2024
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	105,000,000		105,000,000		105,000,000
Carrying Value, Fixed Rate	13,366,000		13,366,000		13,366,000	13,366,000
Total fixed rate | Mezzanine Loan, with an Initial Maturity Date of January 2025
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	95,000,000		95,000,000		95,000,000
Carrying Value, Fixed Rate	30,000,000		30,000,000		30,000,000	30,000,000
Total fixed rate | Mezzanine Loan With Initial Maturity Date of December 2029
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	85,000,000		85,000,000		85,000,000
Carrying Value, Fixed Rate	20,000,000		20,000,000		20,000,000	20,000,000
Total fixed rate | Mezzanine Loan Repaid In 2022
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	0		0		0
Carrying Value, Fixed Rate	0		0		0	43,521,000
Total fixed rate | Mortgage Loan Repaid In 2022
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	0		0		0
Carrying Value, Fixed Rate	0		0		0	73,000,000
Total fixed rate | Mezzanine Loan Repaid In 2022, 2
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	0		0		0
Carrying Value, Fixed Rate	0		0		0	55,250,000
Total floating rate
Debt Investments Held [Abstract]
Future Funding Obligations	34,610,000		34,610,000		34,610,000
Senior Financing	702,817,000		702,817,000		702,817,000
Carrying Value	189,603,000		189,603,000		189,603,000	294,970,000
Total floating rate | Mezzanine Loan Repaid In 2022
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	0		0		0
Carrying Value	0		0		0	133,735,000
Total floating rate | Mortgage/Mezzanine Loan Due December 2022
Debt Investments Held [Abstract]
Future Funding Obligations	8,257,000		8,257,000		8,257,000
Senior Financing	0		0		0
Carrying Value	50,186,000		50,186,000		50,186,000	34,874,000
Total floating rate | Mortgage Loan Due April 2023
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	275,000,000		275,000,000		275,000,000
Carrying Value	50,000,000		50,000,000		50,000,000	49,998,000
Total floating rate | Mezzanine Loan Due May 2023
Debt Investments Held [Abstract]
Future Funding Obligations	3,761,000		3,761,000		3,761,000
Senior Financing	54,000,000		54,000,000		54,000,000
Carrying Value	8,243,000		8,243,000		8,243,000	8,050,000
Total floating rate | Mezzanine Loan Due May 2023, 2
Debt Investments Held [Abstract]
Future Funding Obligations	22,592,000		22,592,000		22,592,000
Senior Financing	187,733,000		187,733,000		187,733,000
Carrying Value	42,091,000		42,091,000		42,091,000	30,802,000
Total floating rate | Mezzanine Loan Due July 2023
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	186,084,000		186,084,000		186,084,000
Carrying Value	$ 39,083,000		$ 39,083,000		$ 39,083,000	$ 37,511,000

Debt and Preferred Equity Inv_9

Debt and Preferred Equity Investments - Preferred Equity Investments (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Preferred equity investment
Aggregate weighted average current yield (as a percent)	6.32%
Carrying Value	$ 663,985	$ 1,088,723
Preferred equity investments
Preferred equity investment
Aggregate weighted average current yield (as a percent)	6.55%
Future Funding Obligations	$ 0
Senior Financing	250,000
Carrying Value	117,889	273,006
Allowance for loan loss	0	0
Total after allowance for loan loss	117,889	273,006
Preferred Equity, February 2027
Preferred equity investment
Future Funding Obligations	0
Senior Financing	250,000
Carrying Value	117,889	112,234
Preferred Equity Repaid
Preferred equity investment
Future Funding Obligations	0
Senior Financing	0
Carrying Value	$ 0	$ 160,772

Investments in Unconsolidated_3

Investments in Unconsolidated Joint Ventures - Information about Joint Ventures (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Sep. 30, 2022 USD ($) ft² unit partner	Dec. 31, 2021 USD ($)
General information on each joint venture
Company's investments in unconsolidated joint ventures | $		$ 3,185,800	$ 2,997,934
Net equity investment in VIEs in which the entity is not primary beneficiary | $		$ 87,200	85,600
Unaudited Approximate Square Feet (sqft)		30,122,545
National Pension Service of Korea / Hines Interest LP / International Investor | One Madison Avenue
General information on each joint venture
Ownership percentage deconsolidated	50.50%
Investment fair value adjustment | $	$ 187,500
Investment in joint venture aggregate equity committed by partner | $	$ 501,800		$ 259,300
Investment in joint venture aggregate maximum ownership percentage	49.50%		25%
Investment in joint venture, number of partners | partner		2
Investment in joint venture, partners' ownership percentage		40%
Third-Party | Korean Institutional Investor / Israeli Institutional Investor | 450 Park Avenue
General information on each joint venture
Ownership Interest		49.90%
Investment in joint venture, partners' ownership percentage		25%
Three Retail and Two Residential Units | Private Investors | 21 East 66th Street
General information on each joint venture
Ownership Interest		32.28%
Number of stores | unit		3
Number of residential units | unit		1
Three Residential Units | Private Investors | 21 East 66th Street
General information on each joint venture
Ownership Interest		16.14%
Number of residential units | unit		2
Joint venture
General information on each joint venture
Company's investments in unconsolidated joint ventures | $		$ 3,185,800
Equity method investments with negative book value | $		$ 114,400
Joint venture | Prudential Real Estate Investors | 100 Park Avenue
General information on each joint venture
Ownership Interest		49.90%
Economic Interest		49.90%
Unaudited Approximate Square Feet (sqft)		834,000
Joint venture | Wharton Properties / Private Investor | 717 Fifth Avenue
General information on each joint venture
Ownership Interest		10.92%
Economic Interest		10.92%
Unaudited Approximate Square Feet (sqft)		119,500
Joint venture | Private Investors | 800 Third Avenue
General information on each joint venture
Ownership Interest		60.52%
Economic Interest		60.52%
Unaudited Approximate Square Feet (sqft)		526,000
Joint venture | Private Investors | 21 East 66th Street
General information on each joint venture
Ownership Interest		32.28%
Economic Interest		32.28%
Unaudited Approximate Square Feet (sqft)		13,069
Joint venture | Private Investors | 115 Spring Street
General information on each joint venture
Ownership Interest		51%
Economic Interest		51%
Unaudited Approximate Square Feet (sqft)		5,218
Joint venture | New York State Teacher's Retirement System | 919 Third Avenue
General information on each joint venture
Ownership Interest		51%
Economic Interest		51%
Unaudited Approximate Square Feet (sqft)		1,454,000
Joint venture | Private Investor / Wharton Properties | 11 West 34th Street
General information on each joint venture
Ownership Interest		30%
Economic Interest		30%
Unaudited Approximate Square Feet (sqft)		17,150
Joint venture | Vornado Realty Trust | 280 Park Avenue
General information on each joint venture
Ownership Interest		50%
Economic Interest		50%
Unaudited Approximate Square Feet (sqft)		1,219,158
Joint venture | Wharton Properties | 1552-1560 Broadway
General information on each joint venture
Ownership Interest		50%
Economic Interest		50%
Unaudited Approximate Square Feet (sqft)		57,718
Joint venture | Wharton Properties | 650 Fifth Avenue
General information on each joint venture
Ownership Interest		50%
Economic Interest		50%
Unaudited Approximate Square Feet (sqft)		69,214
Joint venture | Wharton Properties | 121 Greene Street
General information on each joint venture
Ownership Interest		50%
Economic Interest		50%
Unaudited Approximate Square Feet (sqft)		7,131
Joint venture | Canadian Pension Plan Investment Board | 10 East 53rd Street
General information on each joint venture
Ownership Interest		55%
Economic Interest		55%
Unaudited Approximate Square Feet (sqft)		354,300
Joint venture | PGIM Real Estate | 11 Madison Avenue
General information on each joint venture
Ownership Interest		60%
Economic Interest		60%
Unaudited Approximate Square Feet (sqft)		2,314,000
Joint venture | National Pension Service of Korea / Hines Interest LP | One Vanderbilt Avenue
General information on each joint venture
Ownership Interest		71.01%
Economic Interest		71.01%
Unaudited Approximate Square Feet (sqft)		1,657,198
Joint venture | RXR Realty / New York REIT | Worldwide Plaza
General information on each joint venture
Ownership Interest		24.95%
Economic Interest		24.95%
Unaudited Approximate Square Feet (sqft)		2,048,725
Joint venture | Allianz Real Estate of America | 1515 Broadway
General information on each joint venture
Ownership Interest		56.87%
Economic Interest		56.87%
Unaudited Approximate Square Feet (sqft)		1,750,000
Joint venture | Israeli Institutional Investor | 2 Herald Square
General information on each joint venture
Ownership Interest		51%
Economic Interest		51%
Unaudited Approximate Square Feet (sqft)		369,000
Joint venture | A Fund Managed By Meritz Alternative Investment Management | 15 Beekman
General information on each joint venture
Ownership Interest		20%
Economic Interest		20%
Unaudited Approximate Square Feet (sqft)		221,884
Joint venture | A Fund Managed By Meritz Alternative Investment Management | 220 East 42nd Street
General information on each joint venture
Ownership Interest		51%
Economic Interest		51%
Unaudited Approximate Square Feet (sqft)		1,135,000
Joint venture | Wells Fargo | 85 Fifth Avenue
General information on each joint venture
Ownership Interest		36.27%
Economic Interest		36.27%
Unaudited Approximate Square Feet (sqft)		12,946
Joint venture | National Pension Service of Korea / Hines Interest LP / International Investor | One Madison Avenue
General information on each joint venture
Ownership Interest		25.50%
Economic Interest		25.50%
Unaudited Approximate Square Feet (sqft)		1,048,700
Joint venture | Korean Institutional Investor / Israeli Institutional Investor | 450 Park Avenue
General information on each joint venture
Ownership Interest		50.10%
Economic Interest		25.10%
Unaudited Approximate Square Feet (sqft)		337,000
Investment in joint venture, ownership percentage		25.10%
Joint venture | RXR Realty Led Investment Group | 5 Times Square (8)
General information on each joint venture
Ownership Interest		31.55%
Economic Interest		31.55%
Unaudited Approximate Square Feet (sqft)		1,131,735

Investments in Unconsolidated_4

Investments in Unconsolidated Joint Ventures - Acquisition, Development and Construction Arrangements/Sale of Joint Venture Interest or Property (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule of Equity Method Investments [Line Items]
(Loss) Gain on Sale		$ 0	$ (1,280)	$ (131)	$ (5,438)
Stonehenge Portfolio | Joint venture
Schedule of Equity Method Investments [Line Items]
Gross Asset Valuation	$ 1,000
(Loss) Gain on Sale	$ 0

Investments in Unconsolidated_5

Investments in Unconsolidated Joint Ventures - Mortgages and Other Loans Payable (Details)	9 Months Ended
	Sep. 30, 2022 USD ($) extension	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Total fixed rate debt	$ 2,547,242,000	$ 1,073,409,000
Total floating rate debt	690,148,000	361,051,000
Total fixed rate and floating rate debt	3,237,390,000	1,434,460,000
Joint venture
Debt Instrument [Line Items]
Total fixed rate debt	8,872,825,000	8,896,295,000
Total floating rate debt	3,455,021,000	2,320,097,000
Total fixed rate and floating rate debt	12,327,846,000	11,216,392,000
Deferred financing costs, net	(129,765,000)	(130,516,000)
Total joint venture mortgages and other loans payable, net	$ 12,198,081,000	11,085,876,000
Joint venture | Stonehenge Portfolio
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)
Total fixed rate debt	$ 0	195,493,000
Joint venture | Wharton Properties / Private Investor | 717 Fifth Avenue
Debt Instrument [Line Items]
Economic Interest	10.92%
Joint venture | Wharton Properties | 650 Fifth Avenue
Debt Instrument [Line Items]
Economic Interest	50%
Joint venture | Wharton Properties | 121 Greene Street
Debt Instrument [Line Items]
Economic Interest	50%
Interest rate, floating rate debt (as a percent)	2%
Total floating rate debt	$ 12,636,000	13,228,000
Joint venture | Wharton Properties | 1552-1560 Broadway
Debt Instrument [Line Items]
Economic Interest	50%
Interest rate, floating rate debt (as a percent)	2.65%
Total floating rate debt	$ 193,132,000	193,132,000
Joint venture | Private Investors | 21 East 66th Street
Debt Instrument [Line Items]
Economic Interest	32.28%
Interest rate, fixed rate debt (as a percent)	3.60%
Interest rate, floating rate debt (as a percent)	2.75%
Total fixed rate debt	$ 12,000,000	12,000,000
Total floating rate debt	$ 598,000	632,000
Joint venture | Private Investors | 800 Third Avenue
Debt Instrument [Line Items]
Economic Interest	60.52%
Interest rate, fixed rate debt (as a percent)	3.37%
Total fixed rate debt	$ 177,000,000	177,000,000
Joint venture | Private Investors | 115 Spring Street
Debt Instrument [Line Items]
Economic Interest	51%
Interest rate, floating rate debt (as a percent)	3.40%
Total floating rate debt	$ 65,550,000	65,550,000
Joint venture | New York State Teacher's Retirement System | 919 Third Avenue
Debt Instrument [Line Items]
Economic Interest	51%
Interest rate, fixed rate debt (as a percent)	5.12%
Total fixed rate debt	$ 500,000,000	500,000,000
Joint venture | A Fund Managed By Meritz Alternative Investment Management | 220 East 42nd Street
Debt Instrument [Line Items]
Economic Interest	51%
Interest rate, fixed rate debt (as a percent)	5.75%
Total fixed rate debt	$ 510,000,000	510,000,000
Joint venture | A Fund Managed By Meritz Alternative Investment Management | 15 Beekman
Debt Instrument [Line Items]
Economic Interest	20%
Interest rate, floating rate debt (as a percent)	1.50%
Total floating rate debt	$ 73,136,000	43,566,000
Joint venture | Allianz Real Estate of America | 1515 Broadway
Debt Instrument [Line Items]
Economic Interest	56.87%
Interest rate, fixed rate debt (as a percent)	3.93%
Total fixed rate debt	$ 787,296,000	801,845,000
Joint venture | PGIM Real Estate | 11 Madison Avenue
Debt Instrument [Line Items]
Economic Interest	60%
Interest rate, fixed rate debt (as a percent)	3.84%
Total fixed rate debt	$ 1,400,000,000	1,400,000,000
Joint venture | National Pension Service of Korea / Hines Interest LP / International Investor | One Madison Avenue
Debt Instrument [Line Items]
Economic Interest	25.50%
Interest rate, fixed rate debt (as a percent)	3.90%
Total fixed rate debt	$ 356,201,000	169,629,000
Joint venture | RXR Realty / New York REIT | Worldwide Plaza
Debt Instrument [Line Items]
Economic Interest	24.95%
Interest rate, fixed rate debt (as a percent)	3.98%
Total fixed rate debt	$ 1,200,000,000	1,200,000,000
Joint venture | National Pension Service of Korea / Hines Interest LP | One Vanderbilt Avenue
Debt Instrument [Line Items]
Economic Interest	71.01%
Interest rate, fixed rate debt (as a percent)	2.95%
Total fixed rate debt	$ 3,000,000,000	3,000,000,000
Joint venture | Israeli Institutional Investor | 2 Herald Square
Debt Instrument [Line Items]
Economic Interest	51%
Interest rate, floating rate debt (as a percent)	1.95%
Total floating rate debt	$ 192,500,000	200,989,000
Joint venture | Private Investor / Wharton Properties | 11 West 34th Street
Debt Instrument [Line Items]
Economic Interest	30%
Interest rate, floating rate debt (as a percent)	1.45%
Total floating rate debt	$ 23,000,000	23,000,000
Joint venture | Vornado Realty Trust | 280 Park Avenue
Debt Instrument [Line Items]
Economic Interest	50%
Interest rate, floating rate debt (as a percent)	1.73%
Total floating rate debt	$ 1,200,000,000	1,200,000,000
Joint venture | Prudential Real Estate Investors | 100 Park Avenue
Debt Instrument [Line Items]
Economic Interest	49.90%
Interest rate, floating rate debt (as a percent)	2.25%
Total floating rate debt	$ 360,000,000	360,000,000
Joint venture | RXR Realty Led Investment Group | 5 Times Square (8)
Debt Instrument [Line Items]
Economic Interest	31.55%
Interest rate, floating rate debt (as a percent)	4.69%
Total floating rate debt	$ 847,469,000	0
Joint venture | Canadian Pension Plan Investment Board | 10 East 53rd Street
Debt Instrument [Line Items]
Economic Interest	55%
Interest rate, floating rate debt (as a percent)	1.35%
Total floating rate debt	$ 220,000,000	220,000,000
Joint venture | Korean Institutional Investor / Israeli Institutional Investor | 450 Park Avenue
Debt Instrument [Line Items]
Economic Interest	25.10%
Interest rate, floating rate debt (as a percent)	2.10%
Total floating rate debt	$ 267,000,000	0
Joint venture | Mortgage loan | Wharton Properties / Private Investor | 717 Fifth Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.45%
Total fixed rate debt	$ 300,000,000	300,000,000
Joint venture | Mortgage loan | Wharton Properties | 650 Fifth Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	4.46%
Total fixed rate debt	$ 210,000,000	210,000,000
Joint venture | Mezzanine loans | Wharton Properties / Private Investor | 717 Fifth Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	5.50%
Total fixed rate debt	$ 355,328,000	355,328,000
Joint venture | Mezzanine loans | Wharton Properties | 650 Fifth Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)	5.45%
Total fixed rate debt	$ 65,000,000	$ 65,000,000
Joint venture | Construction Loans | 650 Fifth Avenue
Debt Instrument [Line Items]
Period of extension options	6 months
Joint venture | Construction Loans | One Madison Avenue
Debt Instrument [Line Items]
Maximum facility capacity	$ 1,250,000,000
Term	5 years
Number of extension options | extension	1
Period of extension options	1 year
Joint venture | Construction Loans | 15 Beekman
Debt Instrument [Line Items]
Maximum facility capacity	$ 125,000,000

Investments in Unconsolidated_6

Investments in Unconsolidated Joint Ventures - Schedules of Combined Financial Statements for the Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Investment in Unconsolidated Joint Ventures
Management fees, base revenue		$ 212,456	$ 205,201	$ 601,865	$ 649,410
Assets
Commercial real estate property, net		7,456,407		7,456,407			$ 5,754,708
Cash and restricted cash		201,267	257,941	201,267	257,941		251,417
Tenant and other receivables, related party receivables, and deferred rents receivable		41,334		41,334			47,616
Other assets		571,117		571,117			262,841
Total assets	[1]	12,716,050		12,716,050			11,066,629
Liabilities and equity
Mortgages and other loans payable, net		3,229,016		3,229,016			1,394,386
Lease liability - operating leases		911,756		911,756			851,370
Other liabilities		312,564		312,564			195,390
Equity		4,752,221	5,082,215	4,752,221	5,082,215	$ 4,748,764	4,778,253	$ 4,813,757	$ 4,935,795
Total liabilities and equity/capital		12,716,050		12,716,050			11,066,629
Company's investments in unconsolidated joint ventures		3,185,800		3,185,800			2,997,934
Investments difference between carrying amount and underlying equity		538,800		538,800
Combined statements of income for the unconsolidated joint ventures
Total revenues		212,456	205,201	601,865	649,410
Real estate taxes		35,111	32,139	96,677	121,318
Operating lease rent		7,388	6,557	20,429	20,003
Interest expense before capitalized interest		40,553	34,054	105,165	112,423
Amortization of deferred financing costs		2,043	2,345	5,908	9,505
Depreciation and amortization		48,462	49,277	142,359	169,534
Total expenses		181,407	169,476	514,273	573,007
Net income (loss)		12,211	415,534	(12,253)	528,813
Company's equity in net loss from unconsolidated joint ventures		(21,997)	(15,487)	(31,262)	(31,321)
Joint venture
Investment in Unconsolidated Joint Ventures
Management fees, base revenue		330,705	314,288	997,670	905,017
Assets
Commercial real estate property, net		15,729,750		15,729,750			14,763,874
Cash and restricted cash		720,053		720,053			768,510
Tenant and other receivables, related party receivables, and deferred rents receivable		605,766		605,766			533,455
Other assets		2,604,858		2,604,858			1,776,030
Total assets		19,660,427		19,660,427			17,841,869
Liabilities and equity
Mortgages and other loans payable, net		12,198,081		12,198,081			11,085,876
Deferred revenue		1,117,156		1,117,156			1,158,242
Lease liability - operating leases		987,390		987,390			980,595
Other liabilities		443,393		443,393			352,499
Equity		4,914,407		4,914,407			4,264,657
Total liabilities and equity/capital		19,660,427		19,660,427			$ 17,841,869
Company's investments in unconsolidated joint ventures		3,185,800		3,185,800
Combined statements of income for the unconsolidated joint ventures
Total revenues		330,705	314,288	997,670	905,017
Operating expenses		59,841	54,157	173,327	142,800
Real estate taxes		66,594	58,367	186,710	166,974
Operating lease rent		6,616	5,644	19,465	16,931
Interest expense before capitalized interest		112,747	90,710	305,977	248,588
Amortization of deferred financing costs		7,116	10,661	20,568	24,249
Depreciation and amortization		116,511	119,537	343,183	351,372
Total expenses		369,425	339,076	1,049,230	950,914
Loss on early extinguishment of debt		0	(1,158)	(467)	(2,484)
Net income (loss)		(38,720)	(25,946)	(52,027)	(48,381)
Company's equity in net loss from unconsolidated joint ventures		(21,997)	(15,487)	(31,262)	(31,321)
Management Service, Base | Joint venture
Investment in Unconsolidated Joint Ventures
Management fees, base revenue		5,800	5,300	15,000	12,000
Combined statements of income for the unconsolidated joint ventures
Total revenues		$ 5,800	$ 5,300	$ 15,000	$ 12,000
[1] (1) The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $179.6 million and $193.4 million of land, $321.0 million and $336.9 million of building and improvements, $— million and $— million of building and leasehold improvements, $15.4 million and $15.4 million of right of use assets, $13.5 million and $11.7 million of accumulated depreciation, $615.0 million and $574.4 million of other assets included in other line items, $326.4 million and $418.9 million of real estate debt, net, $0.1 million and $0.8 million of accrued interest payable, $15.3 million and $15.3 million of lease liabilities, and $152.0 million and $145.2 million of other liabilities included in other line items as of September 30, 2022 and December 31, 2021, respectively.

Deferred Costs (Details)

Deferred Costs (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred leasing costs	$ 410,655	$ 400,419
Less: accumulated amortization	(294,703)	(275,924)
Deferred costs, net	$ 115,952	$ 124,495

Mortgages and Other Loans Pay_3

Mortgages and Other Loans Payable (Details)	1 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Sep. 30, 2022 USD ($) extension	Dec. 31, 2021 USD ($)	Apr. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)
Debt Instrument [Line Items]
Total fixed rate debt			$ 2,547,242,000	$ 1,073,409,000
Total floating rate debt			690,148,000	361,051,000
Total fixed rate and floating rate debt			3,237,390,000	1,434,460,000
Mortgages reclassed to liabilities related to assets held for sale			0	(34,537,000)
Total mortgages and other loans payable			3,237,390,000	1,399,923,000
Deferred financing costs, net of amortization			(8,374,000)	(5,537,000)
Total mortgages and other loans payable, net			3,229,016,000	1,394,386,000
Revolving credit facility, net			442,816,000	381,334,000
Book value of collateral			3,800,000,000	2,100,000,000
420 Lexington Ave
Debt Instrument [Line Items]
Total fixed rate debt			284,492,000	288,660,000
Landmark Square
Debt Instrument [Line Items]
Total fixed rate debt			100,000,000	100,000,000
485 Lexington Avenue
Debt Instrument [Line Items]
Total fixed rate debt			450,000,000	450,000,000
245 Park Avenue
Debt Instrument [Line Items]
Total fixed rate debt			1,712,750,000	0
1080 Amsterdam Avenue
Debt Instrument [Line Items]
Total fixed rate debt			0	34,537,000
7 Dey / 185 Broadway
Debt Instrument [Line Items]
Total floating rate debt			210,148,000	198,169,000
719 Seventh Avenue
Debt Instrument [Line Items]
Total floating rate debt			50,000,000	50,000,000
690 Madison Avenue
Debt Instrument [Line Items]
Total floating rate debt			60,000,000	60,000,000
100 Church Street
Debt Instrument [Line Items]
Total fixed rate debt			0	200,212,000
Total floating rate debt			370,000,000	0
609 Fifth Avenue
Debt Instrument [Line Items]
Total floating rate debt			$ 0	52,882,000
Weighted Average | 420 Lexington Ave
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)			3.99%
Weighted Average | Landmark Square
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)			4.90%
Weighted Average | 485 Lexington Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)			4.25%
Weighted Average | 245 Park Avenue
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)			4.22%
Weighted Average | 7 Dey / 185 Broadway
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)			2.85%
Weighted Average | 719 Seventh Avenue
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)			1.20%
Weighted Average | 690 Madison Avenue
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)			1.50%
Weighted Average | 100 Church Street
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)			4.98%
2017 Master Repurchase Agreement
Debt Instrument [Line Items]
Total floating rate debt			$ 0	$ 0
Maximum facility capacity					$ 400,000,000	$ 300,000,000
Revolving credit facility, net			0
Construction Loans | 185 Broadway
Debt Instrument [Line Items]
Maximum facility capacity			$ 225,000,000
Term			3 years
Number of extension options | extension			2
Period of extension options		1 year	1 year
Construction Loans | Subsequent Event | 185 Broadway
Debt Instrument [Line Items]
Period of extension options	1 year

Corporate Indebtedness - Additi

Corporate Indebtedness - Additional Information (Details)	9 Months Ended
	Sep. 30, 2022 USD ($) extension	Dec. 31, 2021 USD ($)
Corporate Indebtedness
Revolving credit facility, net	$ 442,816,000	$ 381,334,000
Term Loan A, Maturity May 2026 | Term Loan
Corporate Indebtedness
Maximum facility capacity	$ 1,050,000,000
Term Loan A, Maturity May 2026 | LIBOR | Term Loan
Corporate Indebtedness
Interest rate added to base rate (as a percent)	1.20%
Term Loan A, Maturity May 2026 | LIBOR | Minimum | Term Loan
Corporate Indebtedness
Interest rate added to base rate (as a percent)	0.80%
Term Loan A, Maturity May 2026 | LIBOR | Maximum | Term Loan
Corporate Indebtedness
Interest rate added to base rate (as a percent)	1.60%
Term Loan B, Maturity November 2024 | Term Loan
Corporate Indebtedness
Maximum facility capacity	$ 200,000,000
Term Loan B, Maturity November 2024 | LIBOR | Term Loan
Corporate Indebtedness
Interest rate added to base rate (as a percent)	1.25%
Term Loan B, Maturity November 2024 | LIBOR | Minimum | Term Loan
Corporate Indebtedness
Interest rate added to base rate (as a percent)	0.85%
Term Loan B, Maturity November 2024 | LIBOR | Maximum | Term Loan
Corporate Indebtedness
Interest rate added to base rate (as a percent)	1.65%
Revolving Credit Facility
Corporate Indebtedness
Facility fee (as a percent)	0.25%
Revolving credit facility, net	$ 450,000,000
Revolving Credit Facility | Minimum
Corporate Indebtedness
Facility fee (as a percent)	0.125%
Revolving Credit Facility | Maximum
Corporate Indebtedness
Facility fee (as a percent)	0.30%
Term Loan
Corporate Indebtedness
Long-term debt, carrying value	$ 1,250,000,000
Term Loan | Line of Credit
Corporate Indebtedness
Long-term debt, carrying value	1,200,000,000	1,200,000,000
2012 Credit Facility
Corporate Indebtedness
Letters of credit	8,500,000
Ability to borrow under line of credit facility	800,000,000
2012 Credit Facility | Line of Credit
Corporate Indebtedness
Long-term debt, carrying value	$ 442,800,000	$ 381,300,000
Revolving Credit Facility | SOFR | Line of Credit
Corporate Indebtedness
Interest rate added to base rate (as a percent)	0.10%
Revolving Credit Facility | Revolving Credit Facility, Maturity May 2026 | Line of Credit
Corporate Indebtedness
Maximum facility capacity	$ 1,250,000,000
Number of extensions | extension	2
Term of extension	6 months
Maximum borrowing capacity, optional expansion	$ 4,500,000,000
Revolving Credit Facility | Revolving Credit Facility, Maturity May 2026 | LIBOR | Line of Credit
Corporate Indebtedness
Interest rate added to base rate (as a percent)	1.05%
Revolving Credit Facility | Revolving Credit Facility, Maturity May 2026 | LIBOR | Minimum | Line of Credit
Corporate Indebtedness
Interest rate added to base rate (as a percent)	0.725%
Revolving Credit Facility | Revolving Credit Facility, Maturity May 2026 | LIBOR | Maximum | Line of Credit
Corporate Indebtedness
Interest rate added to base rate (as a percent)	1.40%

Corporate Indebtedness - Senior

Corporate Indebtedness - Senior Unsecured Notes (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Debt disclosures by scheduled maturity date
Accreted Balance	$ 1,242,994	$ 1,242,002
Senior unsecured notes
Debt disclosures by scheduled maturity date
Unpaid Principal Balance	600,000
Accreted Balance	599,996	900,915
Deferred financing costs, net	(334)	(1,607)
Accreted Balance, net of deferred financing costs	599,662	899,308
Senior unsecured notes | 3.25 Percent Senior Unsecured Notes Due October 2022
Debt disclosures by scheduled maturity date
Unpaid Principal Balance	500,000
Accreted Balance	$ 499,996	499,913
Coupon Rate (as a percent)	3.25%
Initial Term (in Years)	5 years
Senior unsecured notes | 4.27% Senior unsecured notes maturing on December 17, 2025
Debt disclosures by scheduled maturity date
Unpaid Principal Balance	$ 100,000
Accreted Balance	$ 100,000	100,000
Coupon Rate (as a percent)	4.27%
Initial 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	$ 0
Accreted Balance	$ 0	$ 301,002
Coupon Rate (as a percent)	0%
Initial Term (in Years)	10 years

Corporate Indebtedness - Junior

Corporate Indebtedness - Junior Subordinated Deferrable Interest Debentures and Principal Maturities (Details)	1 Months Ended
	Jun. 30, 2005 USD ($) quarter	Sep. 30, 2022 USD ($)
Principal Repayments and Joint Venture Debt
Remaining 2022		$ 711,576,000
2023		55,827,000
2024		537,237,000
2025		470,000,000
2026		0
Thereafter		3,862,750,000
Total principal repayments		5,637,390,000
Trust Preferred Securities
Debt Instrument [Line Items]
Proceeds from issuance of debt	$ 100,000,000
LIBOR | Trust Preferred Securities
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)	1.25%
Interest payment deferment, number of consecutive quarters | quarter	8
Joint venture
Principal Repayments and Joint Venture Debt
Remaining 2022		412,928,000
2023		750,513,000
2024		893,994,000
2025		1,540,234,000
2026		107,137,000
Thereafter		2,429,821,000
Total principal repayments		6,134,627,000
Joint venture | Trust Preferred Securities
Principal Repayments and Joint Venture Debt
Remaining 2022		0
2023		0
2024		0
2025		0
2026		0
Thereafter		100,000,000
Total principal repayments		100,000,000
Joint venture | Mortgages and other loans payable
Scheduled Amortization
Remaining 2022		1,428,000
2023		5,827,000
2024		4,488,000
2025		0
2026		0
Thereafter		0
Total amortization of debt		11,743,000
Principal Repayments and Joint Venture Debt
Remaining 2022		210,148,000
2023		50,000,000
2024		332,749,000
2025		370,000,000
2026		0
Thereafter		2,262,750,000
Total principal repayments		3,225,647,000
Joint venture | Revolving Credit Facility
Principal Repayments and Joint Venture Debt
Remaining 2022		0
2023		0
2024		0
2025		0
2026		0
Thereafter		450,000,000
Total principal repayments		450,000,000
Joint venture | Unsecured Term Loans
Principal Repayments and Joint Venture Debt
Remaining 2022		0
2023		0
2024		200,000,000
2025		0
2026		0
Thereafter		1,050,000,000
Total principal repayments		1,250,000,000
Joint venture | Senior Unsecured Notes
Principal Repayments and Joint Venture Debt
Remaining 2022		500,000,000
2023		0
2024		0
2025		100,000,000
2026		0
Thereafter		0
Total principal repayments		$ 600,000,000

Corporate Indebtedness - Schedu

Corporate Indebtedness - Schedule of Consolidated Interest Expense, Excluding Capitalized Interest (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Interest expense
Interest expense before capitalized interest	$ 40,553	$ 34,054	$ 105,165	$ 112,423
Interest on financing leases	1,099	1,229	3,453	4,215
Interest capitalized	(19,659)	(20,141)	(55,952)	(58,395)
Interest income	(169)	(335)	(812)	(1,088)
Interest expense, net	$ 21,824	$ 14,807	$ 51,854	$ 57,155

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Related Party Transactions
Payments made for services		$ 0	$ 3,563	$ 5,695	$ 8,827
Operating lease rent		7,388	6,557	20,429	20,003
Rental revenue, net		162,952	155,363	474,215	528,063
Amounts due from/to related parties
Due from joint ventures		26,539		26,539		$ 28,204
Other		748		748		1,204
Related party receivables		27,287		27,287		$ 29,408
One Vanderbilt Avenue
Related Party Transactions
Operating lease rent		700	700	2,200	1,600
SUMMIT One Vanderbilt
Related Party Transactions
Operating lease rent		8,300		26,000
Rental revenue, net		5,500		17,400
Alliance Building Services
Related Party Transactions
Profit participation from related party		0	400	1,400	1,100
Payments made for services		0	3,800	8,600	9,400
Entity with Stephen L Green ownership interest
Related Party Transactions
Property management fees from related party		100	$ 200	500	$ 500
Marc Holliday | One Vanderbilt Avenue
Related Party Transactions
Due from related party		1,400		1,400
Andrew Mathias | One Vanderbilt Avenue
Related Party Transactions
Due from related party		$ 1,000		$ 1,000
Affiliated Entity | Holiday And Mathias | One Vanderbilt Avenue
Related Party Transactions
Stabilization of property, within three years after stabilization, percent				50%
Stabilization period				3 years
Stabilization of property, three years or more after stabilization, percent				100%
Stabilization of property, anniversary period				7 years
Affiliated Entity | Holiday | Property Interest Liquidation | One Vanderbilt Avenue
Related Party Transactions
Stabilization of property, liquidation value, amount monetized				$ 17,900
Affiliated Entity | Mathias | Property Interest Liquidation | One Vanderbilt Avenue
Related Party Transactions
Stabilization of property, liquidation value, amount monetized				$ 11,900
Minimum | Marc Holliday | One Vanderbilt Avenue
Related Party Transactions
Percentage of profits due to investors (as a percentage)	1.50%
Minimum | Andrew Mathias | One Vanderbilt Avenue
Related Party Transactions
Percentage of profits due to investors (as a percentage)	1%
Maximum | Marc Holliday | One Vanderbilt Avenue
Related Party Transactions
Percentage of profits due to investors (as a percentage)	1.80%
Maximum | Andrew Mathias | One Vanderbilt Avenue
Related Party Transactions
Percentage of profits due to investors (as a percentage)	1.20%

Noncontrolling Interests on t_3

Noncontrolling Interests on the Company's Consolidated Financial Statements - Additional Information (Details) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) shares $ / shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) shares $ / shares	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) shares
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Redemption and conversion of common units | $	$ (29,817)		$ (29,817)
Net (loss) income | $	491	$ 22,683	(1,831)	$ 28,489
Accumulated other comprehensive income allocation | $	$ 3,114	415	$ 6,404	229
SL Green Operating Partnership
Organization
Number of units of operating partnership owned by the noncontrolling interest unit holders (shares)	3,759,073		3,759,073		3,781,565
Shares of common stock reserved for issuance upon redemption of units of limited partnership interest in operating partnership (shares)	3,759,073		3,759,073
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Redemption and conversion of common units | $	$ (29,817)		$ (29,817)
Accumulated other comprehensive income allocation | $	$ 3,114	$ 415	$ 6,404	229
SL Green Operating Partnership | Series A
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Stated Distribution Rate			3.50%
Number of Units Authorized (in shares)	109,161		109,161
Number of Units Issued (in shares)	109,161		109,161
Number of Units Outstanding (in shares)	109,161		109,161
Annual Dividend Per Unit (in dollars per share) | $ / shares			$ 35
Liquidation Preference Per Unit (in dollars per share) | $ / shares	$ 1,000		1,000
Conversion Price Per Unit (in dollars per share) | $ / shares	$ 0		$ 0
Number of company common stock issued on conversion of Series B preferred units	6.71348		6.71348
SL Green Operating Partnership | Series F
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Stated Distribution Rate			7%
Number of Units Authorized (in shares)	60		60
Number of Units Issued (in shares)	60		60
Number of Units Outstanding (in shares)	60		60
Annual Dividend Per Unit (in dollars per share) | $ / shares			$ 70
Liquidation Preference Per Unit (in dollars per share) | $ / shares	$ 1,000		1,000
Conversion Price Per Unit (in dollars per share) | $ / shares	$ 29.12		$ 29.12
SL Green Operating Partnership | Series K
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Stated Distribution Rate			3.50%
Number of Units Authorized (in shares)	700,000		700,000
Number of Units Issued (in shares)	563,954		563,954
Number of Units Outstanding (in shares)	341,677		341,677
Annual Dividend Per Unit (in dollars per share) | $ / shares			$ 0.8750
Liquidation Preference Per Unit (in dollars per share) | $ / shares	$ 25		25
Conversion Price Per Unit (in dollars per share) | $ / shares	$ 134.67		$ 134.67
SL Green Operating Partnership | Series L
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Stated Distribution Rate			4%
Number of Units Authorized (in shares)	500,000		500,000
Number of Units Issued (in shares)	378,634		378,634
Number of Units Outstanding (in shares)	372,634		372,634
Annual Dividend Per Unit (in dollars per share) | $ / shares			$ 1
Liquidation Preference Per Unit (in dollars per share) | $ / shares	$ 25		25
Conversion Price Per Unit (in dollars per share) | $ / shares	$ 0		$ 0
SL Green Operating Partnership | Series P
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Stated Distribution Rate			4%
Number of Units Authorized (in shares)	200,000		200,000
Number of Units Issued (in shares)	200,000		200,000
Number of Units Outstanding (in shares)	200,000		200,000
Annual Dividend Per Unit (in dollars per share) | $ / shares			$ 1
Liquidation Preference Per Unit (in dollars per share) | $ / shares	$ 25		25
Conversion Price Per Unit (in dollars per share) | $ / shares	$ 0		$ 0
SL Green Operating Partnership | Series Q
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Stated Distribution Rate			3.50%
Number of Units Authorized (in shares)	268,000		268,000
Number of Units Issued (in shares)	268,000		268,000
Number of Units Outstanding (in shares)	268,000		268,000
Annual Dividend Per Unit (in dollars per share) | $ / shares			$ 0.8750
Liquidation Preference Per Unit (in dollars per share) | $ / shares	$ 25		25
Conversion Price Per Unit (in dollars per share) | $ / shares	$ 148.95		$ 148.95
SL Green Operating Partnership | Series R
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Stated Distribution Rate			3.50%
Number of Units Authorized (in shares)	400,000		400,000
Number of Units Issued (in shares)	400,000		400,000
Number of Units Outstanding (in shares)	400,000		400,000
Annual Dividend Per Unit (in dollars per share) | $ / shares			$ 0.8750
Liquidation Preference Per Unit (in dollars per share) | $ / shares	$ 25		25
Conversion Price Per Unit (in dollars per share) | $ / shares	$ 154.89		$ 154.89
SL Green Operating Partnership | Series S
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Stated Distribution Rate			4%
Number of Units Authorized (in shares)	1,077,280		1,077,280
Number of Units Issued (in shares)	1,077,280		1,077,280
Number of Units Outstanding (in shares)	1,077,280		1,077,280
Annual Dividend Per Unit (in dollars per share) | $ / shares			$ 1
Liquidation Preference Per Unit (in dollars per share) | $ / shares	$ 25		25
Conversion Price Per Unit (in dollars per share) | $ / shares	$ 0		$ 0
SL Green Operating Partnership | Series V
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Stated Distribution Rate			3.50%
Number of Units Authorized (in shares)	40,000		40,000
Number of Units Issued (in shares)	40,000		40,000
Number of Units Outstanding (in shares)	40,000		40,000
Annual Dividend Per Unit (in dollars per share) | $ / shares			$ 0.8750
Liquidation Preference Per Unit (in dollars per share) | $ / shares	$ 25		25
Conversion Price Per Unit (in dollars per share) | $ / shares	$ 0		$ 0
SL Green Operating Partnership | Series W
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Number of Units Authorized (in shares)	1		1
Number of Units Issued (in shares)	1		1
Number of Units Outstanding (in shares)	1		1
Preferred stock, dividend, multiplier per common unit distribution			1,350
Partnership Interest
Rollforward analysis of the activity relating to the noncontrolling interests in the operating partnership
Balance at beginning of period | $			$ 344,252	$ 358,262	$ 358,262
Distributions | $			(12,635)		(15,749)
Issuance of common units | $			16,408		18,678
Redemption and conversion of common units | $			(35,316)		(53,289)
Net (loss) income | $			(1,831)		25,457
Accumulated other comprehensive income allocation | $			6,404		1,042
Fair value adjustment | $			(23,539)		9,851
Balance at end of period | $	$ 293,743		$ 293,743		$ 344,252
Operating Partnership | SL Green Operating Partnership
Organization
Noncontrolling interest in the operating partnership (as a percent)	5.52%		5.52%		5.57%

Noncontrolling Interests on t_4

Noncontrolling Interests on the Company's Consolidated Financial Statements - Common Unit Activity (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Rollforward Analysis of Preferred Unit Activity
Redemption of preferred units	$ (29,817)	$ (29,817)
SL Green Operating Partnership
Rollforward Analysis of Preferred Unit Activity
Redemption of preferred units	(29,817)	(29,817)
SL Green Operating Partnership | Series I Preferred Units
Rollforward Analysis of Preferred Unit Activity
Balance at beginning of period		196,075	$ 202,169
Issuance of preferred units		0	0
Redemption of preferred units		(17,967)	(6,040)
Dividends paid on preferred units		(4,749)	(6,760)
Accrued dividends on preferred units		4,584	6,706
Balance at end of period	$ 177,943	$ 177,943	$ 196,075

Stockholders' Equity of the C_3

Stockholders' Equity of the Company - Additional Information (Details)					3 Months Ended		9 Months Ended
	Jan. 18, 2022 $ / shares shares	Jan. 10, 2022	Jan. 07, 2022 $ / shares	Dec. 02, 2021 $ / shares	Sep. 30, 2022 $ / shares shares	Sep. 30, 2021 $ / shares shares	Sep. 30, 2022 $ / shares shares	Sep. 30, 2021 $ / shares shares	Jun. 30, 2022 shares	Dec. 31, 2021 $ / shares shares	Jun. 30, 2021 shares	Dec. 31, 2020 shares
Equity, Class of Treasury Stock [Line Items]
Authorized capital stock (shares)					260,000,000		260,000,000
Authorized shares, par value (in dollars per share) | $ / shares					$ 0.01		$ 0.01
Common stock, shares authorized (in shares)					160,000,000		160,000,000			160,000,000
Common stock, par value (in dollars per share) | $ / shares					$ 0.01		$ 0.01			$ 0.01
Excess stock, shares authorized (shares)					75,000,000		75,000,000
Excess stock, par value (in dollars per share) | $ / shares					$ 0.01		$ 0.01
Preferred stock, shares authorized (shares)					25,000,000		25,000,000
Preferred stock, par value (in dollars per share) | $ / shares					$ 0.01		$ 0.01
Excess shares issued (shares)					0		0
Excess shares outstanding (in shares)					0		0
Cash distribution declared, per common share (in dollars per share) | $ / shares					$ 0.932	$ 0.938	$ 2.797	$ 2.813
Volume weighted average share price (in dollars per share) | $ / shares			$ 79.71
Shareholder Election, Cash Option Subject to Proration
Equity, Class of Treasury Stock [Line Items]
Common stock, dividends, per share, cash paid (in dollars per share) | $ / shares	$ 0.3976
Common stock, dividends, per share, stock issued (in shares)	0.0295
Shareholder Election, Stock Option
Equity, Class of Treasury Stock [Line Items]
Common stock, dividends, per share, stock issued (in shares)	0.0345
Ordinary Dividend
Equity, Class of Treasury Stock [Line Items]
Cash distribution declared, per common share (in dollars per share) | $ / shares				$ 0.3108
Special Dividend
Equity, Class of Treasury Stock [Line Items]
Cash distribution declared, per common share (in dollars per share) | $ / shares				$ 2.4392
Common Stock
Equity, Class of Treasury Stock [Line Items]
Shares, outstanding (in shares)					64,316,000	64,881,000	64,316,000	64,881,000	64,302,000	64,105,000	65,866,000	66,474,000
Reverse stock split conversion ratio		1.03060
SL Green Operating Partnership
Equity, Class of Treasury Stock [Line Items]
Cash distribution declared, per common share (in dollars per share) | $ / shares					$ 0.932	$ 0.938	$ 2.797	$ 2.813
SL Green Operating Partnership | Common Stock
Equity, Class of Treasury Stock [Line Items]
Shares, outstanding (in shares)					64,315,581		64,315,581
Shares, issued (in shares)					64,315,581		64,315,581

Stockholders' Equity of the C_4

Stockholders' Equity of the Company - Share Repurchase Program (Details)	9 Months Ended	12 Months Ended					39 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2021 $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) increase	Jun. 30, 2018 USD ($)	Aug. 31, 2016 USD ($)
Class of Stock [Line Items]
Share repurchased (in shares) | shares	1,971,092	4,474,649	8,276,032	4,333,260	9,187,480	7,865,206
Average price paid per share (in dollars per share) | $ / shares	$ 76.69	$ 75.44	$ 64.30	$ 88.69	$ 102.06	$ 107.81
2016 Repurchase Program
Class of Stock [Line Items]
Stock repurchase program, authorized amount | $			$ 500,000,000	$ 500,000,000	$ 500,000,000	$ 500,000,000	$ 500,000,000	$ 500,000,000	$ 1,000,000,000
Number of increases to share repurchase program | increase							5
Stock repurchase program, authorized amount | $	$ 3,500,000,000
Share repurchased (in shares) | shares	36,107,719	34,136,627	29,661,978	21,385,946	17,052,686	7,865,206

Stockholders' Equity of the C_5

Stockholders' Equity of the Company - Perpetual Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	9 Months Ended
	Aug. 31, 2012	Sep. 30, 2022	Dec. 31, 2021	Feb. 28, 2021
Stockholders' Equity
Common stock, shares authorized (in shares)		160,000,000	160,000,000
Series I Preferred Stock
Stockholders' Equity
Preferred stock, shares outstanding (in shares)		9,200,000	9,200,000
Preferred stock, distribution rate		6.50%
Perpetual preferred stock, liquidation preference (in dollars per share)		$ 25	$ 25
Perpetual preferred stock, annual dividends per share (in dollars per share)		$ 1.625
Contributions of net proceeds from sale of preferred stock	$ 221.9
Dividend Reinvestment and Stock Purchase Plan (DRIP)
Stockholders' Equity
Common stock, shares authorized (in shares)				3,500,000

Stockholders' Equity of the C_6

Stockholders' Equity of the Company - Schedule of Common Stock Issued and Proceeds Received Dividend Reinvestments (Details) - Dividend Reinvestment and Stock Purchase Plan (DRIP) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Stockholders' Equity
Shares of common stock issued (in shares)	2,933	1,944	5,827	8,770
Dividend reinvestments/stock purchases under the DRSPP	$ 140	$ 146	$ 339	$ 613

Stockholders' Equity of the C_7

Stockholders' Equity of the Company - Earnings per Share (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Basic Earnings:
Income (loss) attributable to SL Green common stockholders	$ 7,377	$ 388,205	$ (28,748)	$ 486,073
Less: distributed earnings allocated to participating securities	(505)	(357)	(1,516)	(1,071)
Less: undistributed earnings allocated to participating securities	0	(1,977)	0	(1,790)
Net income (loss) attributable to SLGOP common unitholders (numerator for basic earnings per unit)	6,872	385,871	(30,264)	483,212
Effect of Dilutive Securities:
Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares	505	357	(484)	1,071
Add back: undistributed earnings allocated to participating securities	0	1,977	0	1,790
Add back: effect of dilutive securities (redemption of units to common shares)	491	22,683	(1,831)	28,489
Diluted Earnings:
Net income (loss) attributable to SL Green common stockholders (numerator for diluted earnings per share)	$ 7,868	$ 410,888	$ (32,579)	$ 514,562
Basic Shares:
Weighted average common shares outstanding (shares)	63,949,000	64,856,000	63,971,000	66,248,000
Effect of Dilutive Securities:
Operating Partnership units redeemable for common shares (shares)	4,088,000	3,834,000	4,104,000	4,024,000
Stock-based compensation plans (shares)	860,000	806,000	1,052,000	676,000
Contingently issuable shares (in shares)	0	0	122,000	101,000
Diluted weighted average common stock outstanding (shares)	68,897,000	69,496,000	69,249,000	71,049,000
Common stock shares excluded from the diluted shares outstanding (shares)	621,134	969,631	517,574	1,032,243

Partners' Capital of the Oper_3

Partners' Capital of the Operating Partnership - Additional Information (Details) - shares	9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Common Stock
Stockholders' Equity
Units outstanding (units)	64,316,000	64,302,000	64,105,000	64,881,000	65,866,000	66,474,000
SL Green Operating Partnership
Stockholders' Equity
Number of units of operating partnership owned by the noncontrolling interest unit holders (units)	3,759,073		3,781,565
SL Green Operating Partnership | Operating Partnership
Stockholders' Equity
Noncontrolling interest in the operating partnership (as a percent)	5.52%		5.57%
SL Green Operating Partnership | Common Stock
Stockholders' Equity
Units outstanding (units)	64,315,581
SL Green Operating Partnership | Series I Preferred Units
Stockholders' Equity
Units outstanding (units)	9,200,000
Period of restriction to redeem OP Units	1 year
Conversion of stock, shares issued	1

Partners' Capital of the Oper_4

Partners' Capital of the Operating Partnership - EPS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator
Less: distributed earnings allocated to participating securities	$ (505)	$ (357)	$ (1,516)	$ (1,071)
Less: undistributed earnings allocated to participating securities	0	(1,977)	0	(1,790)
Net income (loss) attributable to SLGOP common unitholders (numerator for basic earnings per unit)	6,872	385,871	(30,264)	483,212
Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares	(505)	(357)	484	(1,071)
Add back: undistributed earnings allocated to participating securities	0	(1,977)	0	(1,790)
Net income (loss) attributable to SL Green common stockholders (numerator for diluted earnings per share)	$ 7,868	$ 410,888	$ (32,579)	$ 514,562
Denominator
Common stock shares excluded from the diluted shares outstanding (shares)	621,134	969,631	517,574	1,032,243
SL Green Operating Partnership
Numerator
Net income (loss) attributable to SLGOP common unitholders (numerator for diluted earnings per unit)	$ 7,868	$ 410,888	$ (30,579)	$ 514,562
Less: distributed earnings allocated to participating securities	(505)	(357)	(1,516)	(1,071)
Less: undistributed earnings allocated to participating securities	0	(1,977)	0	(1,790)
Net income (loss) attributable to SLGOP common unitholders (numerator for basic earnings per unit)	7,363	408,554	(32,095)	511,701
Add back: dilutive effect of earnings allocated to participating securities and contingently issuable shares	505	357	(484)	1,071
Add back: undistributed earnings allocated to participating securities	0	1,977	0	1,790
Net income (loss) attributable to SL Green common stockholders (numerator for diluted earnings per share)	$ 7,868	$ 410,888	$ (32,579)	$ 514,562
Denominator
Basic weighted average common units outstanding (in shares)	68,037,000	68,690,000	68,075,000	70,272,000
Stock-based compensation plans (shares)	860,000	806,000	1,052,000	676,000
Contingently issuable units (in shares)	0	0	122,000	101,000
Diluted weighted average common units outstanding (shares)	68,897,000	69,496,000	69,249,000	71,049,000
Common stock shares excluded from the diluted shares outstanding (shares)	621,134	969,631	517,574	1,032,243

Share-based Compensation - Addi

Share-based Compensation - Additional Information (Details)		3 Months Ended		9 Months Ended		12 Months Ended
	Jan. 01, 2008 shares	Sep. 30, 2022 USD ($) unit / shares fungibleUnit unit shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) unit / shares fungibleUnit unit shares	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capitalized to assets associated with compensation expense related to our long-term compensation plans, restricted stock and stock options		$ 500,000	$ 500,000	$ 1,400,000	$ 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
Options granted (in shares) | shares				0		0
Remaining weighted average contractual life of the options outstanding (in years)				2 years 1 month 6 days
Remaining average contractual life of the options exercisable (in years)				2 years 1 month 6 days
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
Class O LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred unit distributions as a percentage of common unit distributions		10%		10%
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense				$ 7,083,717		$ 8,497,054
Total unrecognized compensation cost related to unvested stock awards		$ 13,600,000		$ 13,600,000
Annual award vesting rate, low end of range (as a percent)				15%
Annual award vesting rate, high end of range (as a percent)				35%
Fair value of restricted stock vested during the period				$ 9,700,000		11,300,000
Weighted average period for recognition of compensation cost related to unvested stock awards (in years)				1 year 10 months 24 days
Weighted average fair value of options granted during the period				$ 14,807,004		$ 9,214,531
Awards granted (in shares) | shares				259,015		141,515
Awards outstanding (in shares) | shares		3,702,794		3,702,794		3,459,363	3,337,545
LTIP units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of options granted during the period				$ 40,600,000		$ 55,000,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 10,100,000	9,100,000	30,500,000	27,300,000
Total unrecognized compensation cost related to unvested stock awards		$ 57,500,000		$ 57,500,000
Weighted average period for recognition of compensation cost related to unvested stock awards (in years)				1 year 7 months 6 days
All other awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term				10 years
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) | unit		32,210,000		32,210,000
Fungible units per share (in fungible units per share) | unit / shares		2.59		2.59
Shares that may be issued if equal to fungible units (shares) (less than) | shares		32,210,000		32,210,000
Fungible units | fungibleUnit		6,300,000		6,300,000
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		$ 0	0	$ 0	0
Total unrecognized compensation cost related to unvested stock awards		$ 0		$ 0
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) | unit / shares		0.84		0.84
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) | unit / shares		1		1
Deferred Stock Compensation Plan for Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 200,000	$ 100,000	$ 2,400,000	$ 2,200,000
Maximum percentage of the annual retainer fee, chairman fees and meeting fees that may be deferred by non-employee directors (percent)		100%		100%
Awards granted (in shares) | shares				23,268
Shares issued (in shares) | shares				9,416
Awards outstanding (in shares) | shares		188,470		188,470
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for issuance (shares) | shares	500,000
Duration of each offering period starting the first day of each calendar quarter (in months)	3 months
Discount from market price	85%
Shares of common stock issued (shares) | shares		187,891		187,891

Share-based Compensation - Stoc

Share-based Compensation - Stock Options and Restricted Stock Activity (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Stock options
Options Outstanding
Balance at beginning of period (in shares)	394,089	761,686
Exercised (in shares)	0	(11,314)
Lapsed or canceled (in shares)	(80,609)	(356,283)
Balance at end of period (in shares)	313,480	394,089
Options exercisable at end of period (in shares)	313,480	394,089
Weighted Average Exercise Price
Balance at beginning of year (in dollars per share) | $ / shares	$ 100.56	$ 105.76
Exercised (in dollars per share) | $ / shares	0	72.30
Lapsed or canceled (in dollars per share) | $ / shares	112.14	112.56
Balance at end of period (in dollars per share) | $ / shares	97.59	100.56
Options exercisable at end of period (in dollars per share) | $ / shares	$ 97.59	$ 100.56
Restricted Stock Awards
Summary of restricted stock
Balance at beginning of year (in shares)	3,459,363	3,337,545
Granted (in shares)	259,015	141,515
Canceled (in shares)	(15,584)	(19,697)
Balance at end of period (in shares)	3,702,794	3,459,363
Vested during the period (in shares)	118,255	122,759
Compensation expense | $	$ 7,083,717	$ 8,497,054
Total fair value of shares granted during the period | $	$ 14,807,004	$ 9,214,531

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	$ 4,778,253
Ending Balance	4,752,221
Deferred net losses from terminated hedges	(500)	$ (600)
Net unrealized gain (loss) on derivative instruments
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	(25,881)
Other comprehensive gain (loss) before reclassifications	78,865
Amounts reclassified from accumulated other comprehensive income	2,526
Ending Balance	55,510
Net unrealized gain on marketable securities
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	1,117
Other comprehensive gain (loss) before reclassifications	(609)
Amounts reclassified from accumulated other comprehensive income	0
Ending Balance	508
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	(46,758)
Other comprehensive gain (loss) before reclassifications	99,927
Amounts reclassified from accumulated other comprehensive income	4,405
Ending Balance	57,574
Joint venture
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	4,264,657
Ending Balance	4,914,407
Joint venture | Net unrealized gain (loss) on derivative instruments
Accumulated Other Comprehensive Income (Loss) of the Company [Roll Forward]
Beginning Balance	(21,994)
Other comprehensive gain (loss) before reclassifications	21,671
Amounts reclassified from accumulated other comprehensive income	1,879
Ending Balance	$ 1,556

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Fair Value of Financial Instruments
Marketable securities available-for-sale	$ 12,039	$ 24,146
Interest rate cap and swap agreements (included in Other assets)	59,285	1,896
Interest rate cap and swap agreements (included in Other liabilities)	3,592	29,912
Debt and preferred equity investments	663,985	1,088,723
Carrying Value
Fair Value of Financial Instruments
Debt and preferred equity investments	663,985	1,088,723
Fixed rate debt	4,497,238	3,274,324
Variable rate debt	1,140,148	801,051
Total	5,637,386	4,075,375
Fair Value
Fair Value of Financial Instruments
Total	5,417,519	4,137,135
Estimated fair value of debt and preferred equity investments, low end of range	600,000	1,000,000
Estimated fair value of debt and preferred equity investments, high end of range	700,000	1,100,000
Level 1
Fair Value of Financial Instruments
Marketable securities available-for-sale	0	0
Interest rate cap and swap agreements (included in Other assets)	0	0
Interest rate cap and swap agreements (included in Other liabilities)	0	0
Level 2
Fair Value of Financial Instruments
Marketable securities available-for-sale	12,039	24,146
Interest rate cap and swap agreements (included in Other assets)	59,285	1,896
Interest rate cap and swap agreements (included in Other liabilities)	3,592	29,912
Level 3
Fair Value of Financial Instruments
Marketable securities available-for-sale	0	0
Interest rate cap and swap agreements (included in Other assets)	0	0
Interest rate cap and swap agreements (included in Other liabilities)	0	0
Level 3 | Fair Value
Fair Value of Financial Instruments
Fixed rate debt	4,284,029	3,336,463
Variable rate debt	$ 1,133,490	$ 800,672

Financial Instruments_ Deriva_3

Financial Instruments: Derivatives and Hedging (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Financial Instruments: Derivatives and Hedging
Fair Value	$ 59,285,000		$ 59,285,000		$ 1,896,000
Gain (loss) from changes in fair value	1,300,000	$ 0	1,300,000	$ 0
Fair value of derivatives in a net liability position	3,600,000		3,600,000
Aggregate termination value	3,600,000		3,600,000
Estimated current balance held in accumulated other comprehensive loss to be reclassified into earnings within the next 12 months			(37,600,000)
Share of joint venture of accumulated other comprehensive loss reclassified into equity in net income from unconsolidated joint ventures within the next 12 months			(8,200,000)
Amount of Gain (Loss) Recognized in Other Comprehensive Income	53,411,000	(593,000)	106,719,000	(13,336,000)
Amount of Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income	2,923,000	(7,208,000)	(4,659,000)	(19,901,000)
Interest Rate Cap Expiring November 2022
Financial Instruments: Derivatives and Hedging
Notional Value	$ 111,869,000		$ 111,869,000
Strike Rate	3.50%		3.50%
Fair Value	$ 8,000		$ 8,000
Interest Rate Swap Expiring January 2023
Financial Instruments: Derivatives and Hedging
Notional Value	$ 100,000,000		$ 100,000,000
Strike Rate	0.212%		0.212%
Fair Value	$ 1,173,000		$ 1,173,000
Interest Rate Swap Expiring February 2023
Financial Instruments: Derivatives and Hedging
Notional Value	$ 400,000,000		$ 400,000,000
Strike Rate	0.184%		0.184%
Fair Value	$ 4,892,000		$ 4,892,000
Interest Rate Swap Expiring February 2023, 2
Financial Instruments: Derivatives and Hedging
Notional Value	$ 50,000,000		$ 50,000,000
Strike Rate	0.633%		0.633%
Fair Value	$ 518,000		$ 518,000
Interest Rate Swap Expiring in July 2023
Financial Instruments: Derivatives and Hedging
Notional Value	$ 100,000,000		$ 100,000,000
Strike Rate	1.163%		1.163%
Fair Value	$ 2,514,000		$ 2,514,000
Interest Rate Swap Expiring in July 2023, 2
Financial Instruments: Derivatives and Hedging
Notional Value	$ 200,000,000		$ 200,000,000
Strike Rate	1.133%		1.133%
Fair Value	$ 5,076,000		$ 5,076,000
Interest Rate Cap Sold Expiring In September 2023
Financial Instruments: Derivatives and Hedging
Notional Value	$ 600,000,000		$ 600,000,000
Strike Rate	4.08%		4.08%
Fair Value	$ (2,822,000)		$ (2,822,000)
Interest Rate Swap Expiring January 2024
Financial Instruments: Derivatives and Hedging
Notional Value	$ 150,000,000		$ 150,000,000
Strike Rate	2.70%		2.70%
Fair Value	$ 2,949,000		$ 2,949,000
Interest Rate Swap Expiring in January 2024, 2
Financial Instruments: Derivatives and Hedging
Notional Value	$ 200,000,000		$ 200,000,000
Strike Rate	4.59%		4.59%
Fair Value	$ (476,000)		$ (476,000)
Interest Rate Swap Expiring in January 2024, 3
Financial Instruments: Derivatives and Hedging
Notional Value	$ 200,000,000		$ 200,000,000
Strike Rate	4.511%		4.511%
Fair Value	$ (294,000)		$ (294,000)
Interest Rate Swap Expiring January 2026
Financial Instruments: Derivatives and Hedging
Notional Value	$ 150,000,000		$ 150,000,000
Strike Rate	2.721%		2.721%
Fair Value	$ 6,104,000		$ 6,104,000
Interest Rate Swap Expiring January 2026, 2
Financial Instruments: Derivatives and Hedging
Notional Value	$ 200,000,000		$ 200,000,000
Strike Rate	2.762%		2.762%
Fair Value	$ 7,963,000		$ 7,963,000
Interest Rate Swap Expiring in February 2027
Financial Instruments: Derivatives and Hedging
Notional Value	$ 100,000,000		$ 100,000,000
Strike Rate	3.003%		3.003%
Fair Value	$ 3,451,000		$ 3,451,000
Interest Rate Swap Expiring in February 2027, 2
Financial Instruments: Derivatives and Hedging
Notional Value	$ 100,000,000		$ 100,000,000
Strike Rate	2.833%		2.833%
Fair Value	$ 4,069,000		$ 4,069,000
Interest Rate Swap Expiring in February 2027, 3
Financial Instruments: Derivatives and Hedging
Notional Value	$ 50,000,000		$ 50,000,000
Strike Rate	2.563%		2.563%
Fair Value	$ 2,527,000		$ 2,527,000
Interest Rate Swap Expiring in February 2027, 4
Financial Instruments: Derivatives and Hedging
Notional Value	$ 200,000,000		$ 200,000,000
Strike Rate	2.691%		2.691%
Fair Value	$ 9,175,000		$ 9,175,000
Interest Rate Swap Expiring in May 2027
Financial Instruments: Derivatives and Hedging
Notional Value	$ 300,000,000		$ 300,000,000
Strike Rate	2.966%		2.966%
Fair Value	$ 8,814,000		$ 8,814,000
Interest Rate Swap Expiring in January 2028
Financial Instruments: Derivatives and Hedging
Notional Value	$ 100,000,000		$ 100,000,000
Strike Rate	3.756%		3.756%
Fair Value	$ 52,000		$ 52,000
Interest Rate Contract
Financial Instruments: Derivatives and Hedging
Fair Value	55,693,000		55,693,000
Interest Rate Swaps/Caps
Financial Instruments: Derivatives and Hedging
Amount of Gain (Loss) Recognized in Other Comprehensive Income	44,057,000	(450,000)	83,768,000	7,305,000
Amount of Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income	3,061,000	(4,416,000)	(2,673,000)	(13,359,000)
Joint venture
Financial Instruments: Derivatives and Hedging
Amount of Gain (Loss) Recognized in Other Comprehensive Income	9,354,000	(143,000)	22,951,000	(20,641,000)
Amount of Loss Reclassified from Accumulated Other Comprehensive Income (Loss) into Income	(138,000)	$ (2,792,000)	(1,986,000)	$ (6,542,000)
Joint venture | Interest Rate Cap Expiring January 2023
Financial Instruments: Derivatives and Hedging
Notional Value	$ 23,000,000		$ 23,000,000
Strike Rate	4.75%		4.75%
Fair Value	$ 0		$ 0
Joint venture | Interest Rate Cap Expiring February 2023
Financial Instruments: Derivatives and Hedging
Notional Value	$ 220,000,000		$ 220,000,000
Strike Rate	4%		4%
Fair Value	$ 188,000		$ 188,000
Joint venture | Interest Rate Cap Expiring June 2023
Financial Instruments: Derivatives and Hedging
Notional Value	$ 510,000,000		$ 510,000,000
Strike Rate	3%		3%
Fair Value	$ 4,589,000		$ 4,589,000
Joint venture | Interest Rate Cap Expiring August 2023
Financial Instruments: Derivatives and Hedging
Notional Value	$ 272,000,000		$ 272,000,000
Strike Rate	4%		4%
Fair Value	$ 979,000		$ 979,000
Joint venture | Interest Rate Cap Expiring September 2023
Financial Instruments: Derivatives and Hedging
Notional Value	$ 400,000,000		$ 400,000,000
Strike Rate	3.50%		3.50%
Fair Value	$ 3,073,000		$ 3,073,000
Joint venture | Interest Rate Cap Expiring September 2023, 2
Financial Instruments: Derivatives and Hedging
Notional Value	$ 1,075,000,000		$ 1,075,000,000
Strike Rate	4.08%		4.08%
Fair Value	$ 5,070,000		$ 5,070,000
Joint venture | Interest Rate Cap Expiring September 2023, 3
Financial Instruments: Derivatives and Hedging
Notional Value	$ 125,000,000		$ 125,000,000
Strike Rate	4.08%		4.08%
Fair Value	$ 590,000		$ 590,000
Joint venture | Interest Rate Cap Expiring May 2024
Financial Instruments: Derivatives and Hedging
Notional Value	$ 246,155,000		$ 246,155,000
Strike Rate	0.55%		0.55%
Fair Value	$ 23,192,000		$ 23,192,000
Joint venture | Interest Rate Cap Expiring May 2024, 2
Financial Instruments: Derivatives and Hedging
Notional Value	$ 246,155,000		$ 246,155,000
Strike Rate	0.55%		0.55%
Fair Value	$ 23,161,000		$ 23,161,000
Joint venture | Interest Rate Swap Expiring February 2026
Financial Instruments: Derivatives and Hedging
Notional Value	$ 177,000,000		$ 177,000,000
Strike Rate	1.669%		1.669%
Fair Value	$ 13,348,000		$ 13,348,000
Joint venture | Interest Rate Contract
Financial Instruments: Derivatives and Hedging
Fair Value	$ 74,190,000		$ 74,190,000

Lease Income - Lease Income (De

Lease Income - Lease Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Fixed lease payments	$ 142,778	$ 142,979	$ 416,033	$ 473,466
Variable lease payments	19,990	12,660	58,283	58,634
Total lease payments	162,768	155,639	474,316	532,100
Amortization of acquired above and below-market leases	184	(276)	(101)	(4,037)
Total rental revenue	162,952	155,363	474,215	528,063
Sublease Income	55,700	52,000	169,900	175,500
Interest income	$ 1,099	$ 1,108	$ 3,286	$ 3,313

Segment Information - Additiona

Segment Information - Additional Information (Details) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Segment information
Number of reportable segments | segment				2
Total revenues		$ 212,456	$ 205,201	$ 601,865	$ 649,410
Net (loss) income		12,211	415,534	(12,253)	528,813
Total assets	[1]	12,716,050		12,716,050		$ 11,066,629
Marketing, general and administrative		21,276	23,477	69,574	68,426
Operating Segments | Real Estate Segment
Segment information
Total revenues		182,943	185,129	532,057	589,958
Net (loss) income		(8,934)	398,377	(65,824)	478,589
Total assets		12,046,743		12,046,743		9,974,140
Operating Segments | Debt and Preferred Equity Segment
Segment information
Total revenues		29,513	20,072	69,808	59,452
Net (loss) income		21,145	$ 17,157	53,571	$ 50,224
Total assets		$ 669,307		$ 669,307		$ 1,092,489
[1] (1) The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $179.6 million and $193.4 million of land, $321.0 million and $336.9 million of building and improvements, $— million and $— million of building and leasehold improvements, $15.4 million and $15.4 million of right of use assets, $13.5 million and $11.7 million of accumulated depreciation, $615.0 million and $574.4 million of other assets included in other line items, $326.4 million and $418.9 million of real estate debt, net, $0.1 million and $0.8 million of accrued interest payable, $15.3 million and $15.3 million of lease liabilities, and $152.0 million and $145.2 million of other liabilities included in other line items as of September 30, 2022 and December 31, 2021, respectively.