Consolidated Balance Sheets - USD ($) shares in Thousands, $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Commercial real estate properties, at cost:
Land and land interests		$ 2,357,051	$ 3,309,710
Building and improvements		6,351,012	7,948,852
Building leasehold and improvements		1,450,614	1,437,325
Properties under capital lease		47,445	47,445
Total commercial real estate properties, at cost		10,206,122	12,743,332
Less: accumulated depreciation		(2,300,116)	(2,264,694)
Total commercial real estate properties, net		7,906,006	10,478,638
Assets held for sale		338,354	0
Cash and cash equivalents		127,888	279,443
Restricted cash		122,138	90,524
Investments in marketable securities		28,579	85,110
Tenant and other receivables, net of allowance of $18,637 and $16,592 in 2017 and 2016, respectively		57,644	53,772
Related party receivables		23,039	15,856
Deferred rents receivable, net of allowance of $17,207 and $25,203 in 2017 and 2016, respectively		365,337	442,179
Debt and preferred equity investments, net of discounts and deferred origination fees of $25,507 and $16,705 in 2017 and 2016, respectively		2,114,041	1,640,412
Investments in unconsolidated joint ventures		2,362,989	1,890,186
Deferred costs, net		226,201	267,600
Other assets		310,688	614,067
Total assets	[1]	13,982,904	15,857,787
Liabilities
Mortgages and other loans payable, net		2,837,282	4,073,830
Revolving credit facility, net		30,336	0
Unsecured term loans, net		1,491,575	1,179,521
Unsecured notes, net		1,395,939	1,128,315
Accrued interest payable		38,142	36,052
Other liabilities		188,005	206,238
Accounts payable and accrued expenses		137,142	190,583
Deferred revenue		208,119	217,955
Capital lease obligations		42,843	42,132
Deferred land leases payable		3,239	2,583
Dividend and distributions payable		85,138	87,271
Security deposits		67,927	66,504
Liabilities related to assets held for sale		4,074	0
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities		100,000	100,000
Total liabilities	[1]	6,629,761	7,330,984
Commitments and contingencies		0	0
Noncontrolling interests in Operating Partnership		461,954	473,882
Preferred units		301,735	302,010
Equity
Series I Preferred Stock, $0.01 par value, $25.00 liquidation preference, 9,200 issued and outstanding at both December 31, 2017 and 2016		221,932	221,932
Common stock, $0.01 par value, 160,000 shares authorized and 93,858 and 101,617 issued and outstanding at December 31, 2017 and 2016, respectively (including 1,055 and 1,055 shares held in treasury at December 31, 2017 and 2016, respectively)		939	1,017
Additional paid-in-capital		4,968,338	5,624,545
Treasury stock at cost		(124,049)	(124,049)
Accumulated other comprehensive income		18,604	22,137
Retained earnings		1,139,329	1,578,893
Total SL Green stockholders' equity		6,225,093	7,324,475
Noncontrolling interests in other partnerships		364,361	426,436
Total equity		6,589,454	7,750,911
SL Green stockholders equity:
Total liabilities and equity/capital		$ 13,982,904	$ 15,857,787
Preferred stock, par		$ 0.01	$ 0.01
Preferred stock, liquidation preference		$ 25.00	$ 25.00
Preferred stock, shares issued		9,200	9,200
Preferred stock, shares outstanding		9,200	9,200
SL Green Operating Partnership
Commercial real estate properties, at cost:
Land and land interests		$ 2,357,051	$ 3,309,710
Building and improvements		6,351,012	7,948,852
Building leasehold and improvements		1,450,614	1,437,325
Properties under capital lease		47,445	47,445
Total commercial real estate properties, at cost		10,206,122	12,743,332
Less: accumulated depreciation		(2,300,116)	(2,264,694)
Total commercial real estate properties, net		7,906,006	10,478,638
Assets held for sale		338,354	0
Cash and cash equivalents		127,888	279,443
Restricted cash		122,138	90,524
Investments in marketable securities		28,579	85,110
Tenant and other receivables, net of allowance of $18,637 and $16,592 in 2017 and 2016, respectively		57,644	53,772
Related party receivables		23,039	15,856
Deferred rents receivable, net of allowance of $17,207 and $25,203 in 2017 and 2016, respectively		365,337	442,179
Debt and preferred equity investments, net of discounts and deferred origination fees of $25,507 and $16,705 in 2017 and 2016, respectively		2,114,041	1,640,412
Investments in unconsolidated joint ventures		2,362,989	1,890,186
Deferred costs, net		226,201	267,600
Other assets		310,688	614,067
Total assets	[2]	13,982,904	15,857,787
Liabilities
Mortgages and other loans payable, net		2,837,282	4,073,830
Revolving credit facility, net		30,336	0
Unsecured term loans, net		1,491,575	1,179,521
Unsecured notes, net		1,395,939	1,128,315
Accrued interest payable		38,142	36,052
Other liabilities		188,005	206,238
Accounts payable and accrued expenses		137,142	190,583
Deferred revenue		208,119	217,955
Capital lease obligations		42,843	42,132
Deferred land leases payable		3,239	2,583
Dividend and distributions payable		85,138	87,271
Security deposits		67,927	66,504
Liabilities related to assets held for sale		4,074	0
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities		100,000	100,000
Total liabilities	[2]	6,629,761	7,330,984
Limited partner interests in SLGOP (4,453 and 4,364 limited partner common units outstanding at December 31, 2017 and 2016, respectively)		461,954	473,882
Preferred units		301,735	302,010
Equity
Accumulated other comprehensive income		18,604	22,137
SL Green stockholders equity:
Series I Preferred Units, $25.00 liquidation preference, 9,200 issued and outstanding at both December 31, 2017 and 2016		221,932	221,932
SL Green partners' capital (973 and 1,049 general partner common units, and 91,831 and 99,513 limited partner common units outstanding at December 31, 2017 and 2016, respectively)		5,984,557	7,080,406
Total SLGOP partners' capital		6,225,093	7,324,475
Noncontrolling interests in other partnerships		364,361	426,436
Total capital		6,589,454	7,750,911
Total liabilities and equity/capital		13,982,904	15,857,787
Consolidated VIEs
Commercial real estate properties, at cost:
Land and land interests		398,000	412,300
Building and improvements		1,400	1,500
Building leasehold and improvements		2,000	2,000
Properties under capital lease		47,400	47,400
Less: accumulated depreciation		(330,900)	(327,200)
Other assets		221,000	226,800
Liabilities
Mortgages and other loans payable, net		628,900	621,800
Accrued interest payable		2,500	2,200
Other liabilities		56,800	72,200
Capital lease obligations		$ 42,800	$ 42,100

[1] The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $398.0 million and $412.3 million of land, $1.4 billion and $1.5 billion of building and improvements, $2.0 million and $2.0 million of building and leasehold improvements, $47.4 million and $47.4 million of properties under capital lease, $330.9 million and $327.2 million of accumulated depreciation, $221.0 million and $226.8 million of other assets included in other line items, $628.9 million and $621.8 million of real estate debt, net, $2.5 million and $2.2 million of accrued interest payable, $42.8 million and $42.1 million of capital lease obligations, and $56.8 million and $72.2 million of other liabilities included in other line items as of December 31, 2017 and December 31, 2016, respectively.

[2] The Operating Partnership's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs: $398.0 million and $412.3 million of land, $1.4 billion and $1.5 billion of building and improvements, $2.0 million and $2.0 million of building and leasehold improvements, $47.4 million and $47.4 million of properties under capital lease, $330.9 million and $327.2 million of accumulated depreciation, $221.0 million and $226.8 million of other assets included in other line items, $628.9 million and $621.8 million of real estate debt, net, $2.5 million and $2.2 million of accrued interest payable, $42.8 million and $42.1 million of capital lease obligations, and $56.8 million and $72.2 million of other liabilities included in other line items as of December 31, 2017 and December 31, 2016, respectively.