Consolidated Statements of Capital - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Increase (Decrease) in Partner's Capital
Redemption and conversion of common units	$ (5,674)
DRSPP proceeds	77	$ 184
Reallocation of noncontrolling interest in the Operating Partnership	(42,841)	(10,147)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	4,601	7,559
Contributions to consolidated joint venture interests	6,678	8,560
Cash distributions to noncontrolling interests	$ (1,283)	$ (136)
Common Stock
Increase (Decrease) in Partner's Capital
DRSPP proceeds (in shares)	2	5
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)	78	(12)
Noncontrolling Interests
Increase (Decrease) in Partner's Capital
Redemption and conversion of common units	$ (5,674)
Contributions to consolidated joint venture interests	6,678	$ 8,560
Cash distributions to noncontrolling interests	(1,283)	(136)
SL Green Operating Partnership
Increase (Decrease) in Partner's Capital
Beginning balance	3,855,925	4,646,922
Net income (loss)	15,585	(37,618)
Redemption and conversion of common units	(5,674)
Other comprehensive income	22,674	(30,176)
Perpetual preferred unit dividends	(3,738)	(3,738)
DRSPP proceeds	77	184
Reallocation of noncontrolling interest in the Operating Partnership	(42,841)	(10,147)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	4,601	7,559
Contributions to consolidated joint venture interests		8,560
Cash distributions to noncontrolling interests	(1,283)	(136)
Cash distributions declared	(48,356)	(52,236)
Ending balance	3,803,648	4,529,174
SL Green Operating Partnership \| Preferred stock \| Series I Preferred Stock
Increase (Decrease) in Partner's Capital
Beginning balance	221,932	221,932
Ending balance	221,932	221,932
SL Green Operating Partnership \| Common Stock \| Partners' Interest
Increase (Decrease) in Partner's Capital
Beginning balance	$ 3,546,906	$ 4,313,497
Beginning balance (units)	64,726	64,380
Net income (loss)	$ 16,879	$ (35,993)
Perpetual preferred unit dividends	$ (3,738)	$ (3,738)
DRSPP proceeds (in shares)	2	5
DRSPP proceeds	$ 77	$ 184
Reallocation of noncontrolling interest in the Operating Partnership	$ (42,841)	$ (10,147)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings (in shares)	78	(12)
Deferred compensation plan and stock awards, net of forfeitures and tax withholdings	$ 4,601	$ 7,559
Cash distributions declared	(48,356)	(52,236)
Ending balance	$ 3,473,528	$ 4,219,126
Ending balance (units)	64,806	64,373
SL Green Operating Partnership \| Accumulated Other Comprehensive Loss
Increase (Decrease) in Partner's Capital
Beginning balance	$ 17,477	$ 49,604
Other comprehensive income	22,674	(30,176)
Ending balance	40,151	19,428
SL Green Operating Partnership \| Noncontrolling Interests
Increase (Decrease) in Partner's Capital
Beginning balance	69,610	61,889
Net income (loss)	(1,294)	(1,625)
Redemption and conversion of common units	(5,674)
Contributions to consolidated joint venture interests		8,560
Cash distributions to noncontrolling interests	(1,283)	(136)
Ending balance	$ 68,037	$ 68,688

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Value of stock issued during the period from a deferred compensation plan and stock award, net.

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Other Comprehensive Income (Loss), Net of Tax, Less Portion Attributable to Noncontrolling Interest

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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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Reallocation of Noncontrolling Interest To (From) Operating Partnership

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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Total distributions to each class of partners (i.e., general, limited and preferred partners).

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Amount of partners' capital (deficit), including portions attributable to both the parent and noncontrolling interests. Excludes temporary equity and is sometimes called permanent equity.

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Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

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