Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net income	$ 115,899	$ 16,015	$ 229,722	$ 16,939
Other comprehensive income (loss):
Change in net unrealized gain on derivative instruments, including SL Green's/SLGOP's share of joint venture net unrealized (loss) gain on derivative instruments	3,977	(2,520)	14,890	(3,595)
Change in unrealized gain (loss) on marketable securities	318	263	(8)	(4,487)
Other comprehensive income (loss)	4,295	(2,257)	14,882	(8,082)
Comprehensive income	120,194	13,758	244,604	8,857
Net (income) loss attributable to noncontrolling interests and preferred units distributions	(8,606)	(4,056)	(16,925)	10,109
Net (loss) income attributable to noncontrolling interests	(173)	(786)	(371)	16,705
Other comprehensive (loss) income attributable to noncontrolling interests	(245)	100	(864)	299
Comprehensive income attributable to SL Green/SLGOP	111,343	9,802	226,815	19,265
SL Green Operating Partnership
Net income	115,899	16,015	229,722	16,939
Other comprehensive income (loss):
Change in net unrealized gain on derivative instruments, including SL Green's/SLGOP's share of joint venture net unrealized (loss) gain on derivative instruments	3,977	(2,520)	14,890	(3,595)
Change in unrealized gain (loss) on marketable securities	318	263	(8)	(4,487)
Other comprehensive income (loss)	4,295	(2,257)	14,882	(8,082)
Comprehensive income	120,194	13,758	244,604	8,857
Net (loss) income attributable to noncontrolling interests	(173)	(786)	(371)	16,705
Other comprehensive (loss) income attributable to noncontrolling interests	(245)	100	(864)	299
Comprehensive income attributable to SL Green/SLGOP	$ 119,776	$ 13,072	$ 243,369	$ 25,861