Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Accumulated Other Comprehensive Income or Loss [Roll Forward]
Beginning Balance		$ (52,251)	$ (14,114)	$ (14,114)
Effective portion of interest rate contracts		180	(58,646)
Amortization of interest rate contracts	[1]	1,306	627
Other comprehensive loss attributable to noncontrolling interests		(218)	15,427
Ending Balance		(50,983)	(56,706)	(52,251)
Boston Properties Limited Partnership
Accumulated Other Comprehensive Income or Loss [Roll Forward]
Beginning Balance		(60,853)	(18,337)	(18,337)
Effective portion of interest rate contracts		180	(58,646)
Amortization of interest rate contracts	[2]	1,306	627
Other comprehensive income (loss) attributable to noncontrolling interests		(72)	10,526
Ending Balance		$ (59,439)	$ (65,830)	$ (60,853)

[1] Amounts reclassified from comprehensive income primarily to interest expense within the Boston Properties, Inc.’s Consolidated Statements of Operations.

[2] Amounts reclassified from comprehensive income primarily to interest expense within the Boston Properties Limited Partnership's Consolidated Statements of Operations.