Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2012

Earnings Per Share [Abstract]

Computation Of Basic And Diluted Earnings Per Share

	For the three months ended March 31, 2012
	Income (Numerator)		Shares (Denominator)		Per Share Amount
	(in thousands, except for per share amounts)
Basic Earnings:
Income from continuing operations attributable to Boston Properties, Inc.	$	48,923		148,343	$	0.33
Discontinued operations attributable to Boston Properties, Inc.		15,709		—		0.11
Net income attributable to Boston Properties, Inc.	$	64,632		148,343	$	0.44
Effect of Dilutive Securities:
Stock Based Compensation and Exchangeable Senior Notes		—		403		(0.01	)
Diluted Earnings:
Net income	$	64,632		148,746	$	0.43

	For the three months ended March 31, 2011
	Income (Numerator)			Shares (Denominator)		Per Share Amount
	(in thousands, except for per share amounts)
Basic Earnings:
Income from continuing operations attributable to Boston Properties, Inc.	$	41,249			142,095	$	0.29
Discontinued operations attributable to Boston Properties, Inc.		(436	)		—		(0.00	)
Net income attributable to Boston Properties, Inc.	$	40,813			142,095	$	0.29
Effect of Dilutive Securities:
Stock Based Compensation and Exchangeable Senior Notes		—			409		(0.00	)
Diluted Earnings:
Net income	$	40,813			142,504	$	0.29