Consolidated Balance Sheets (Partnership) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Assets
Debt and preferred equity investments, discount and deferred origination fees	$ 1,689	$ 1,811
Allowance for loan and lease losses, real estate	13,520	6,630
SLGOP partners' capital:
Land and land interests	1,576,927	1,576,927
Building and improvements	4,940,138	4,903,776
Building leasehold and improvements	1,700,376	1,691,831
Right of use asset - operating leases	1,026,265	1,026,265
Accumulated depreciation	2,100,804	2,039,554
Other assets	592,898	546,945
Mortgages and other loans payable, net	3,226,781	3,227,563
Lease liability - financing leases	104,544	104,218
Other liabilities	282,958	236,211
SL Green Operating Partnership
Assets
Debt and preferred equity investments, discount and deferred origination fees	1,689	1,811
Allowance for loan and lease losses, real estate	$ 13,520	$ 6,630
Liabilities
Limited partner interests in Operating Partnership, limited partner common units outstanding (shares)	4,239	3,670
SLGOP partners' capital:
SL Green partner's capital, general partner common units outstanding (shares)	686	680
SL Green partners' capital, limited partner common units outstanding (shares)	63,687	63,700
Land and land interests	$ 1,576,927	$ 1,576,927
Building and improvements	4,940,138	4,903,776
Building leasehold and improvements	1,700,376	1,691,831
Right of use asset - operating leases	1,026,265	1,026,265
Accumulated depreciation	2,100,804	2,039,554
Other assets	592,898	546,945
Mortgages and other loans payable, net	3,226,781	3,227,563
Lease liability - financing leases	104,544	104,218
Other liabilities	282,958	236,211
Service Corporation
SLGOP partners' capital:
Land and land interests	41,200	41,200
Building and improvements	40,100	41,000
Building leasehold and improvements	0	0
Right of use asset - operating leases	0	0
Accumulated depreciation	4,600	4,400
Other assets	670,700	599,200
Mortgages and other loans payable, net	49,900	49,800
Accrued interest payable	200	200
Lease liability - financing leases	0	0
Other liabilities	$ 179,300	$ 146,400
Series I Preferred Stock | SL Green Operating Partnership
SLGOP partners' 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