Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015		Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income		$ 100,739	$ 95,901	$ 309,909		$ 163,657
Other comprehensive income:
Effective portion of interest rate contracts		15,639	0	12,106		0
Amortization of interest rate contracts	[1]	628	624	1,255	[2]	1,253	[2]
Other comprehensive income		16,267	624	13,361		1,253
Comprehensive income		117,006	96,525	323,270		164,910
Net income attributable to noncontrolling interests		(18,661)	(16,756)	(54,008)		(27,856)
Other comprehensive income attributable to noncontrolling interests		(2,512)	(64)	(2,209)		(126)
Comprehensive income attributable to Boston Properties, Inc.		$ 95,833	$ 79,705	$ 267,053		$ 136,928

[1] Amounts reclassified from comprehensive income primarily to interest expense within the Company's Consolidated Statements of Operations.

[2] (1) Consists of amounts from previous interest rate hedging programs.