Consolidated Statements of Operations (Partnership) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues
Rental revenue, net	$ 165,237	$ 150,632	$ 328,256	$ 292,136
SUMMIT Operator revenue	31,007	32,602	53,541	58,206
Investment income	6,339	6,191	22,453	13,594
Interest income from real estate loans held by consolidated securitization vehicles	21,049	0	37,030	0
Other income	18,284	33,395	40,482	46,766
Total revenues	241,916	222,820	481,762	410,702
Expenses
Operating expenses, including related party expenses of $0 and $3 in 2025, and $0 and $0 in 2024	51,105	46,333	107,167	89,941
Real estate taxes	37,750	32,058	74,967	63,664
Operating lease rent	6,105	6,368	12,211	12,773
SUMMIT Operator expenses	24,847	23,188	46,611	45,046
Interest expense, net of interest income	45,318	35,803	90,999	66,976
Amortization of deferred financing costs	1,742	1,677	3,429	3,216
SUMMIT Operator tax expense	1,547	1,855	1,502	560
Interest expense on senior obligations of consolidated securitization vehicles	21,017	0	34,989	0
Depreciation and amortization	60,160	52,247	124,658	100,831
Loan loss and other investment reserves, net of recoveries	(46,287)	0	(71,326)	0
Transaction related costs	177	76	472	92
Marketing, general and administrative	21,579	20,032	43,303	41,345
Total expenses	225,060	219,637	468,982	424,444
Equity in net (loss) income from unconsolidated joint ventures	(22,775)	4,325	(21,605)	115,485
Income from debt fund investments, net	600	0	600	0
Equity in net (loss) gain on sale of interest in unconsolidated joint venture/real estate	(1,946)	(8,129)	(1,946)	18,635
Purchase price and other fair value adjustments	(9,617)	1,265	(19,228)	(49,227)
Loss on sale of real estate, net	(167)	(2,741)	(649)	(2,741)
Depreciable real estate reserves and impairment	0	(13,721)	(8,546)	(65,839)
Gain on sale of investments in marketable securities	10,232	0	10,232	0
Gain on early extinguishment of debt	0	17,777	0	17,777
Net (loss) income	(6,817)	1,959	(28,362)	20,348
Net loss attributable to noncontrolling interests:
Noncontrolling interests in other partnerships	840	1,871	5,737	3,165
Preferred units distributions	(2,153)	(2,406)	(4,307)	(4,309)
Net (loss) income attributable to SL Green	(7,355)	1,577	(24,692)	18,456
Perpetual preferred unit dividends	(3,737)	(3,737)	(7,475)	(7,475)
SL Green Operating Partnership
Revenues
Rental revenue, net	165,237	150,632	328,256	292,136
SUMMIT Operator revenue	31,007	32,602	53,541	58,206
Investment income	6,339	6,191	22,453	13,594
Interest income from real estate loans held by consolidated securitization vehicles	21,049	0	37,030	0
Other income	18,284	33,395	40,482	46,766
Total revenues	241,916	222,820	481,762	410,702
Expenses
Operating expenses, including related party expenses of $0 and $3 in 2025, and $0 and $0 in 2024	51,105	46,333	107,167	89,941
Real estate taxes	37,750	32,058	74,967	63,664
Operating lease rent	6,105	6,368	12,211	12,773
SUMMIT Operator expenses	24,847	23,188	46,611	45,046
Interest expense, net of interest income	45,318	35,803	90,999	66,976
Amortization of deferred financing costs	1,742	1,677	3,429	3,216
SUMMIT Operator tax expense	1,547	1,855	1,502	560
Interest expense on senior obligations of consolidated securitization vehicles	21,017	0	34,989	0
Depreciation and amortization	60,160	52,247	124,658	100,831
Loan loss and other investment reserves, net of recoveries	(46,287)	0	(71,326)	0
Transaction related costs	177	76	472	92
Marketing, general and administrative	21,579	20,032	43,303	41,345
Total expenses	225,060	219,637	468,982	424,444
Equity in net (loss) income from unconsolidated joint ventures	(22,775)	4,325	(21,605)	115,485
Income from debt fund investments, net	600	0	600	0
Equity in net (loss) gain on sale of interest in unconsolidated joint venture/real estate	(1,946)	(8,129)	(1,946)	18,635
Purchase price and other fair value adjustments	(9,617)	1,265	(19,228)	(49,227)
Loss on sale of real estate, net	(167)	(2,741)	(649)	(2,741)
Depreciable real estate reserves and impairment	0	(13,721)	(8,546)	(65,839)
Gain on sale of investments in marketable securities	10,232	0	10,232	0
Gain on early extinguishment of debt	0	17,777	0	17,777
Net (loss) income	(6,817)	1,959	(28,362)	20,348
Net loss attributable to noncontrolling interests:
Noncontrolling interests in other partnerships	840	1,871	5,737	3,165
Preferred units distributions	(2,153)	(2,406)	(4,307)	(4,309)
Net (loss) income attributable to SL Green	(8,130)	1,424	(26,932)	19,204
Perpetual preferred unit dividends	(3,737)	(3,737)	(7,475)	(7,475)
Net (loss) income attributable to SLGOP common unitholders	$ (11,867)	$ (2,313)	$ (34,407)	$ 11,729
Basic (loss) earnings per unit (in dollars per share)	$ (0.18)	$ (0.04)	$ (0.50)	$ 0.16
Diluted (loss) earnings per unit (in dollars per share)	$ (0.18)	$ (0.04)	$ (0.50)	$ 0.16
Basic weighted average common units outstanding (in shares)	74,455	68,740	74,491	68,753
Diluted weighted average common units and common unit equivalents outstanding (in shares)	74,455	68,740	74,491	70,137