Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $6,760,078 at December 31, 2016)	$ 20,147,263	$ 19,481,535
Less: accumulated depreciation (amounts related to VIEs of ($758,640) at December 31, 2016)	(4,222,235)	(3,925,894)
Total real estate	15,925,028	15,555,641
Cash and cash equivalents (amounts related to VIEs of $253,999 at December 31, 2016)	356,914	723,718
Cash held in escrows (amounts related to VIEs of $4,955 at December 31, 2016)	63,174	73,790
Investments in securities	23,814	20,380
Tenant and other receivables (amounts related to VIEs of $23,525 at December 31, 2016)	92,548	97,865
Accrued rental income (amounts related to VIEs of $224,185 at December 31, 2016)	799,138	754,883
Deferred charges, net (amounts related to VIEs of $290,436 at December 31, 2016)	686,163	704,867
Prepaid expenses and other assets (amounts related to VIEs of $42,718 at December 31, 2016)	129,666	185,118
Investments in unconsolidated joint ventures	775,198	235,224
Total assets	18,851,643	18,351,486
Liabilities:
Mortgage notes payable, net (amounts related to VIEs of $2,018,483 at December 31, 2016)	2,063,087	3,435,242
Unsecured senior notes, net	7,245,953	5,264,819
Unsecured line of credit	0	0
Mezzanine notes payable (amounts related to VIEs of $307,093 at December 31, 2016)	307,093	308,482
Outside members’ notes payable (amounts related to VIEs of $180,000 at December 31, 2016)	180,000	180,000
Accounts payable and accrued expenses (amounts related to VIEs of $110,457 at December 31, 2016)	298,524	274,709
Dividends and distributions payable	130,308	327,320
Accrued interest payable (amounts related to VIEs of $162,226 at December 31, 2016)	243,933	190,386
Other liabilities (amounts related to VIEs of $175,146 at December 31, 2016)	450,821	483,601
Total liabilities	10,919,719	10,464,559
Commitments and contingencies	0	0
Noncontrolling interest:
Redeemable interest in property partnership		0
Equity / Capital:
Excess stock, $0.01 par value, 150,000,000 shares authorized, none issued or outstanding	0	0
Preferred stock, $0.01 par value, 50,000,000 shares authorized;
5.25% Series B cumulative redeemable preferred stock / units, liquidation preference $2,500 per share / unit, 80,000 shares / units issued and outstanding at December 31, 2016 and December 31, 2015, respectively	200,000	200,000
Common stock, $0.01 par value, 250,000,000 shares authorized, 153,869,075 and 153,658,866 issued and 153,790,175 and 153,579,966 outstanding at December 31, 2016 and December 31, 2015, respectively	1,538	1,536
Additional paid-in capital	6,333,424	6,305,687
Dividends in excess of earnings	(693,694)	(780,952)
Treasury common stock at cost, 78,900 shares at December 31, 2016 and December 31, 2015	(2,722)	(2,722)
Accumulated other comprehensive loss	(52,251)	(14,114)
Total stockholders' equity attributable to Boston Properties, Inc.	5,786,295	5,709,435
Noncontrolling interests:
Common units of the Operating Partnership	614,982	603,092
Property partnerships	1,530,647	1,574,400
Total equity / capital	7,931,924	7,886,927
Total liabilities and equity / capital	18,851,643	18,351,486
Boston Properties Limited Partnership
ASSETS
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $6,760,078 at December 31, 2016)	19,733,872	19,061,141
Less: accumulated depreciation (amounts related to VIEs of ($758,640) at December 31, 2016)	(4,136,364)	(3,846,816)
Total real estate	15,597,508	15,214,325
Cash and cash equivalents (amounts related to VIEs of $253,999 at December 31, 2016)	356,914	723,718
Cash held in escrows (amounts related to VIEs of $4,955 at December 31, 2016)	63,174	73,790
Investments in securities	23,814	20,380
Tenant and other receivables (amounts related to VIEs of $23,525 at December 31, 2016)	92,548	97,865
Accrued rental income (amounts related to VIEs of $224,185 at December 31, 2016)	799,138	754,883
Deferred charges, net (amounts related to VIEs of $290,436 at December 31, 2016)	686,163	704,867
Prepaid expenses and other assets (amounts related to VIEs of $42,718 at December 31, 2016)	129,666	185,118
Investments in unconsolidated joint ventures	775,198	235,224
Total assets	18,524,123	18,010,170
Liabilities:
Mortgage notes payable, net (amounts related to VIEs of $2,018,483 at December 31, 2016)	2,063,087	3,435,242
Unsecured senior notes, net	7,245,953	5,264,819
Unsecured line of credit	0	0
Mezzanine notes payable (amounts related to VIEs of $307,093 at December 31, 2016)	307,093	308,482
Outside members’ notes payable (amounts related to VIEs of $180,000 at December 31, 2016)	180,000	180,000
Accounts payable and accrued expenses (amounts related to VIEs of $110,457 at December 31, 2016)	298,524	274,709
Dividends and distributions payable	130,308	327,320
Accrued interest payable (amounts related to VIEs of $162,226 at December 31, 2016)	243,933	190,386
Other liabilities (amounts related to VIEs of $175,146 at December 31, 2016)	450,821	483,601
Total liabilities	10,919,719	10,464,559
Commitments and contingencies	0	0
Noncontrolling interest:
Redeemable partnership units—17,079,511 and 16,097,473 common units and 904,588 and 1,831,714 long term incentive units outstanding at redemption value at December 31, 2016 and December 31, 2015, respectively	2,262,040	2,286,689
Preferred stock, $0.01 par value, 50,000,000 shares authorized;
5.25% Series B cumulative redeemable preferred stock / units, liquidation preference $2,500 per share / unit, 80,000 shares / units issued and outstanding at December 31, 2016 and December 31, 2015, respectively	193,623	193,623
Boston Properties Limited Partnership partners’ capital—1,717,743 and 1,715,092 general partner units and 152,072,432 and 151,864,874 limited partner units outstanding at December 31, 2016 and December 31, 2015, respectively	3,618,094	3,490,899
Accumulated other comprehensive loss	(60,853)	(18,337)
Noncontrolling interests:
Property partnerships	1,530,647	1,574,400
Total equity / capital	5,342,364	5,258,922
Total liabilities and equity / capital	$ 18,524,123	$ 18,010,170