Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Rental revenue, net	$ 188,089	$ 222,631
Investment income	19,273	38,533
Other income	18,740	53,139
Total revenues	226,102	314,303
Expenses
Operating expenses, including related party expenses of $2,225 in 2021 and $3,749 in 2020	42,284	53,866
Real estate taxes	45,411	46,622
Operating lease rent	6,739	7,367
Interest expense, net of interest income	23,388	37,494
Amortization of deferred financing costs	3,774	2,500
Depreciation and amortization	62,996	68,279
Loan loss and other investment reserves, net of recoveries	0	11,248
Transaction related costs	22	65
Marketing, general and administrative	22,885	19,570
Total expenses	207,499	247,011
Equity in net loss from unconsolidated joint ventures	(2,864)	(12,814)
Equity in net loss on sale of interest in unconsolidated joint venture/real estate	(12,629)	0
Purchase price and other fair value adjustments	2,664	0
(Loss) gain on sale of real estate, net	(1,388)	72,636
Depreciable real estate reserves and impairment	(8,241)	0
Net (loss) income	(3,855)	127,114
Net loss (income) attributable to noncontrolling interests:
Noncontrolling interests in the Operating Partnership	476	(6,202)
Noncontrolling interests in other partnerships	1,499	293
Preferred units distributions	(1,846)	(2,666)
Net income (loss) attributable to SL Green/SLGOP	(3,726)	118,539
Perpetual preferred stock dividends	(3,738)	(3,738)
Net income attributable to SL Green common stockholders	$ (7,464)	$ 114,801
Basic earnings per share (usd per share)	$ (0.11)	$ 1.51
Diluted earnings per share (usd per share)	$ (0.11)	$ 1.51
Basic weighted average common shares outstanding (in shares)	69,010	75,656
Diluted weighted average common shares and common share equivalents outstanding (in shares)	74,070	80,352
SL Green Operating Partnership
Revenues
Rental revenue, net	$ 188,089	$ 222,631
Investment income	19,273	38,533
Other income	18,740	53,139
Total revenues	226,102	314,303
Expenses
Operating expenses, including related party expenses of $2,225 in 2021 and $3,749 in 2020	42,284	53,866
Real estate taxes	45,411	46,622
Operating lease rent	6,739	7,367
Interest expense, net of interest income	23,388	37,494
Amortization of deferred financing costs	3,774	2,500
Depreciation and amortization	62,996	68,279
Loan loss and other investment reserves, net of recoveries	0	11,248
Transaction related costs	22	65
Marketing, general and administrative	22,885	19,570
Total expenses	207,499	247,011
Equity in net loss from unconsolidated joint ventures	(2,864)	(12,814)
Equity in net loss on sale of interest in unconsolidated joint venture/real estate	(12,629)	0
Purchase price and other fair value adjustments	2,664	0
(Loss) gain on sale of real estate, net	(1,388)	72,636
Depreciable real estate reserves and impairment	(8,241)	0
Net (loss) income	(3,855)	127,114
Net loss (income) attributable to noncontrolling interests:
Noncontrolling interests in other partnerships	1,499	293
Preferred units distributions	(1,846)	(2,666)
Net income (loss) attributable to SL Green/SLGOP	(4,202)	124,741
Perpetual preferred unit distributions	(3,738)	(3,738)
Net (loss) income attributable to SLGOP common unitholders	$ (7,940)	$ 121,003
Basic earnings per unit (usd per share)	$ (0.11)	$ 1.51
Diluted earnings per unit (usd per share)	$ (0.11)	$ 1.51
Basic weighted average common units outstanding (in shares)	73,158	79,876
Diluted weighted average common units and common unit equivalents outstanding (in shares)	74,070	80,352