Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues
Rental revenue, net	$ 273,307	$ 263,838	$ 539,755	$ 520,595
Escalation and reimbursement	39,381	40,967	79,926	82,080
Investment and preferred equity income	46,731	33,448	99,439	59,786
Other income	5,726	6,282	11,493	16,659
Total revenues	365,145	344,535	730,613	679,120
Expenses
Operating expenses, including approximately $4,319 and $8,469 (2013) and $4,773 and $8,244 (2012) paid to related parties	69,432	67,434	141,630	139,319
Real estate taxes	52,710	52,256	106,114	103,453
Ground rent	8,649	8,890	19,640	17,696
Interest expense, net of interest income	83,276	82,159	164,447	162,130
Amortization of deferred financing costs	4,240	3,553	8,703	7,133
Depreciation and amortization	82,020	76,207	161,114	151,739
Loan loss and other investment reserves, net of recoveries				564
Transaction related costs	1,711	1,970	3,068	3,026
Marketing, general and administrative	21,514	20,721	42,582	40,917
Total expenses	323,552	313,190	647,298	625,977
Income from continuing operations before equity in net (loss) income from unconsolidated joint ventures, equity in net (loss) gain on sale of interest in unconsolidated joint venture/real estate, loss on sale of investment in marketable securities, purchase price fair value adjustment, depreciable real estate reserves, net of recoveries, and loss on early extinguishment of debt	41,593	31,345	83,315	53,143
Equity in net (loss) income from unconsolidated joint ventures	(3,761)	70,890	1,313	69,330
Equity in net (loss) gain on sale of interest in unconsolidated joint venture/real estate	(3,583)	9,534	(3,583)	16,794
Loss on sale of investment in marketable securities	(8)		(65)
Purchase price fair value adjustment	(2,305)		(2,305)
Depreciable real estate reserves, net of recoveries		5,789		5,789
Loss on early extinguishment of debt	(10)		(18,523)
Income from continuing operations	31,926	117,558	60,152	145,056
Net (loss) income from discontinued operations	(678)	899	320	1,931
Gain on sale of discontinued operations			1,113	6,627
Net income	31,248	118,457	61,585	153,614
Net income attributable to noncontrolling interests:
Noncontrolling interests in the Operating Partnership	(244)	(3,421)	(799)	(4,309)
Noncontrolling interests in other partnerships	(3,004)	(3,887)	(5,905)	(4,958)
Preferred unit distributions	(565)	(565)	(1,130)	(962)
Net income attributable to SL Green	27,435	110,584	53,751	143,385
Preferred stock redemption costs	(12,160)		(12,160)
Perpetual preferred stock dividends	(6,999)	(7,544)	(14,406)	(15,089)
Net income attributable to SL Green common stockholders	8,276	103,040	27,185	128,296
Amounts attributable to SL Green common stockholders:
Income from continuing operations	14,722	92,967	31,580	103,778
Purchase price fair value adjustment	(2,305)		(2,305)
Equity in net (loss) gain on sale of interest in unconsolidated joint venture/real estate	(3,482)	9,207	(3,482)	16,244
Net (loss) income from discontinued operations	(659)	866	311	1,864
Gain on sale of discontinued operations			1,081	6,410
Net income	$ 8,276	$ 103,040	$ 27,185	$ 128,296
Basic earnings per share:
Net income from continuing operations before discontinued operations (in dollars per share)	$ 0.14	$ 1.04	$ 0.32	$ 1.18
Equity in net (loss) gain on sale of interest in unconsolidated joint venture/real estate (in dollars per share)	$ (0.04)	$ 0.10	$ (0.03)	$ 0.18
Net (loss) income from discontinued operations (in dollars per share)	$ (0.01)	$ 0.01		$ 0.02
Gain on sale of discontinued operations (in dollars per share)			$ 0.01	$ 0.07
Net income attributable to SL Green common stockholders (in dollars per share)	$ 0.09	$ 1.15	$ 0.30	$ 1.45
Diluted earnings per share:
Net income from continuing operations before discontinued operations (in dollars per share)	$ 0.14	$ 1.03	$ 0.32	$ 1.18
Equity in net (loss) gain on sale of interest in unconsolidated joint venture/real estate (in dollars per share)	$ (0.04)	$ 0.10	$ (0.03)	$ 0.18
Net (loss) income from discontinued operations (in dollars per share)	$ (0.01)	$ 0.01		$ 0.02
Gain on sale of discontinued operations (in dollars per share)			$ 0.01	$ 0.07
Net income attributable to SL Green common stockholders (in dollars per share)	$ 0.09	$ 1.14	$ 0.30	$ 1.45
Dividends per share (in dollars per share)	$ 0.33	$ 0.25	$ 0.66	$ 0.50
Basic weighted average common shares outstanding (in shares)	91,660	89,789	91,530	88,265
Diluted weighted average common shares and common share equivalents outstanding (in shares)	94,536	93,351	94,452	91,766