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

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest, less preferred distributions during the period.

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