Consolidated Balance Sheets (Partnership) (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt and preferred equity investments, net of discounts and deferred origination fees	$ 14	$ 1,618
Allowance for loan and lease losses	454	13,520
Accumulated Amortization of Deferred Costs	174,617	308,923
Real estate loans held by consolidated securitization vehicles	1,023,877	584,134
Senior obligations of consolidated securitization vehicles	1,023,877	567,487
Land	1,699,215	1,357,041
Building and improvements	4,012,305	3,862,224
Building leasehold and improvements	1,448,112	1,388,476
Right-of-use asset - operating leases	864,430	865,639
Accumulated depreciation	2,306,377	2,126,081
Debt fund investments, at fair value	152,958	0
Servicing asset	1,023,877	709,095
Other assets	577,299	610,911
Real estate debt	2,146,049	1,944,635
Lease liabilities	108,183	106,853
Senior obligations	1,023,877	590,131
Other liabilities	392,756	414,153
SL Green Operating Partnership
Debt and preferred equity investments, net of discounts and deferred origination fees	14	1,618
Allowance for loan and lease losses	454	13,520
Accumulated Amortization of Deferred Costs	174,617	308,923
Real estate loans held by consolidated securitization vehicles	1,023,877	584,134
Senior obligations of consolidated securitization vehicles	$ 1,023,877	$ 567,487
Limited partner interests in Operating Partnership, limited partner common units outstanding (shares)	4,538,000	4,510,000
SL Green partner's capital, general partner common units outstanding (shares)	757,000	756,000
SL Green partners' capital, limited partner common units outstanding (shares)	70,402,000	70,341,000
Land	$ 1,699,215	$ 1,357,041
Building and improvements	4,012,305	3,862,224
Building leasehold and improvements	1,448,112	1,388,476
Right-of-use asset - operating leases	864,430	865,639
Accumulated depreciation	2,306,377	2,126,081
Debt fund investments, at fair value	152,958	0
Servicing asset	1,023,877	709,095
Other assets	577,299	610,911
Real estate debt	2,146,049	1,944,635
Lease liabilities	108,183	106,853
Senior obligations	1,023,877	590,131
Other liabilities	392,756	414,153
Service Corporation
Land	185,200	236,700
Building and improvements	207,500	159,100
Building leasehold and improvements	0	0
Right-of-use asset - operating leases	0	0
Accumulated depreciation	6,300	4,100
Debt fund investments, at fair value	153,000	0
Servicing asset	1,023,900	709,100
Other assets	862,500	830,300
Real estate debt	328,600	357,900
Accrued interest payable	900	1,100
Lease liabilities	0	0
Senior obligations	1,023,900	590,100
Other liabilities	$ 287,500	$ 324,800
Series I Preferred Stock | SL Green Operating Partnership
Preferred units, liquidation preference (in dollars per share)	$ 25.00	$ 25.00
Preferred units, shares issued (in shares)	9,200,000	9,200,000
Preferred units, shares outstanding (in shares)	9,200,000	9,200,000