Consolidated Balance Sheets (Partnership) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Assets
Debt and preferred equity investments, discount and deferred origination fees	$ 209	$ 1,618
Allowance for loan and lease losses, real estate	454	13,520
Deferred costs accumulated amortization	180,831	308,923
Real estate loans held by consolidated securitization vehicles	1,013,273	584,134
Liabilities
Senior obligations of consolidated securitization vehicles	1,013,273	567,487
Capital
Land and land interests	1,627,895	1,357,041
Building and improvements	4,082,434	3,862,224
Building leasehold and improvements	1,424,907	1,388,476
Right-of-use assets - operating leases	869,929	865,639
Accumulated depreciation	2,266,042	2,126,081
Debt fund investments, at fair value	73,402	0
Real estate loans held by consolidated securitization vehicles (includes $1,013,273 and $584,134 at fair value as of September 30, 2025 and December 31, 2024, respectively)	1,013,273	709,095
Other assets	608,444	610,911
Real estate debt	2,280,095	1,944,635
Lease liabilities	107,846	106,853
Senior obligations of consolidated securitization vehicles (includes $1,013,273 and $567,487 at fair value as of September 30, 2025 and December 31, 2024, respectively)	1,013,273	590,131
Other liabilities	387,641	414,153
SL Green Operating Partnership
Assets
Debt and preferred equity investments, discount and deferred origination fees	209	1,618
Allowance for loan and lease losses, real estate	454	13,520
Deferred costs accumulated amortization	180,831	308,923
Real estate loans held by consolidated securitization vehicles	1,013,273	584,134
Liabilities
Senior obligations of consolidated securitization vehicles	$ 1,013,273	$ 567,487
Limited partner interests in Operating Partnership, limited partner common units outstanding (shares)	4,509	4,510
Capital
SL Green partner's capital, general partner common units outstanding (shares)	755	756
SL Green partners' capital, limited partner common units outstanding (shares)	70,273	70,341
Land and land interests	$ 1,627,895	$ 1,357,041
Building and improvements	4,082,434	3,862,224
Building leasehold and improvements	1,424,907	1,388,476
Right-of-use assets - operating leases	869,929	865,639
Accumulated depreciation	2,266,042	2,126,081
Debt fund investments, at fair value	73,402	0
Real estate loans held by consolidated securitization vehicles (includes $1,013,273 and $584,134 at fair value as of September 30, 2025 and December 31, 2024, respectively)	1,013,273	709,095
Other assets	608,444	610,911
Real estate debt	2,280,095	1,944,635
Lease liabilities	107,846	106,853
Senior obligations of consolidated securitization vehicles (includes $1,013,273 and $567,487 at fair value as of September 30, 2025 and December 31, 2024, respectively)	1,013,273	590,131
Other liabilities	387,641	414,153
Service Corporation
Capital
Land and land interests	416,100	236,700
Building and improvements	357,700	159,100
Building leasehold and improvements	0	0
Right-of-use assets - operating leases	0	0
Accumulated depreciation	11,900	4,100
Debt fund investments, at fair value	73,400	0
Real estate loans held by consolidated securitization vehicles (includes $1,013,273 and $584,134 at fair value as of September 30, 2025 and December 31, 2024, respectively)	1,013,300	709,100
Other assets	879,300	830,300
Real estate debt	632,300	357,900
Accrued interest payable	1,500	1,100
Lease liabilities	0	0
Senior obligations of consolidated securitization vehicles (includes $1,013,273 and $567,487 at fair value as of September 30, 2025 and December 31, 2024, respectively)	1,013,300	590,100
Other liabilities	$ 304,400	$ 324,800
Series I Preferred Stock | SL Green Operating Partnership
Capital
Preferred units, liquidation preference (in dollars per share)	$ 25.00	$ 25.00
Preferred units, shares issued (in shares)	9,200	9,200
Preferred units, shares outstanding (in shares)	9,200	9,200