Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 66,103	$ 80,451	$ 274,859	$ 198,383
Other comprehensive income:
Amortization of interest rate contracts	670	649	1,967	1,946
Other comprehensive income	670	649	1,967	1,946
Comprehensive income	66,773	81,100	276,826	200,329
Net income attributable to noncontrolling interests	(8,334)	(9,909)	(33,386)	(27,024)
Other comprehensive income attributable to noncontrolling interests	(71)	(72)	(208)	(227)
Comprehensive income attributable to Boston Properties, Inc.	$ 58,368	$ 71,119	$ 243,232	$ 173,078