Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income	$ 20,677	$ 40,722	$ 214,418	$ 267,232
Other comprehensive income (loss):
Increase (decrease) in unrealized value of derivative instruments, including SL Green's share of joint venture derivative instruments	6,099	(12,574)	(48,227)	(59,680)
Increase (decrease) in unrealized value of marketable securities	389	230	(2,152)	1,571
Other comprehensive income (loss)	6,488	(12,344)	(50,379)	(58,109)
Comprehensive income	27,165	28,378	164,039	209,123
Net income attributable to noncontrolling interests and preferred units distributions	(3,080)	(3,827)	(18,101)	(17,967)
Net (income) loss attributable to noncontrolling interests	(414)	624	(1,145)	2,524
Other comprehensive (income) loss attributable to noncontrolling interests	(317)	607	2,664	2,869
Comprehensive income attributable to SL Green/SLGOP	23,768	25,158	148,602	194,025
SL Green Operating Partnership
Net income	20,677	40,722	214,418	267,232
Other comprehensive income (loss):
Increase (decrease) in unrealized value of derivative instruments, including SL Green's share of joint venture derivative instruments	6,099	(12,574)	(48,227)	(59,680)
Increase (decrease) in unrealized value of marketable securities	389	230	(2,152)	1,571
Other comprehensive income (loss)	6,488	(12,344)	(50,379)	(58,109)
Comprehensive income	27,165	28,378	164,039	209,123
Net (income) loss attributable to noncontrolling interests	(414)	624	(1,145)	2,524
Other comprehensive (income) loss attributable to noncontrolling interests	(317)	607	2,664	2,869
Comprehensive income attributable to SL Green/SLGOP	$ 26,434	$ 29,609	$ 165,558	$ 214,516