Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$ 45,336	$ 28,630	$ 106,921	$ 182,243
Other comprehensive income (loss):
Net unrealized gain (loss) on derivative instruments	(1,165)	(102)	10,522	(635)
Change in unrealized gain (loss) on marketable securities	513	(825)	306	(597)
Other comprehensive (loss) income	(652)	(927)	10,828	(1,232)
Comprehensive income	44,684	27,703	117,749	181,011
Net income attributable to noncontrolling interests	(4,573)	(2,973)	(12,407)	(13,201)
Other comprehensive loss (income) attributable to noncontrolling interests in the Operating Partnership	25	59	(490)	396
Comprehensive income attributable to SL Green common stockholders	40,136	24,789	104,852	168,206
SL Green Operating Partnership
Net income	45,336	28,630	106,921	182,243
Other comprehensive income (loss):
Net unrealized gain (loss) on derivative instruments	(1,165)	(102)	10,522	(635)
Change in unrealized gain (loss) on marketable securities	513	(825)	306	(597)
Other comprehensive (loss) income	(652)	(927)	10,828	(1,232)
Comprehensive income	44,684	27,703	117,749	181,011
Net income attributable to noncontrolling interests in other partnerships	(2,901)	(1,835)	(8,806)	(6,792)
Comprehensive income attributable to SL Green common stockholders	$ 41,783	$ 25,868	$ 108,943	$ 174,219