Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Computation Of Basic And Diluted Earnings Per Share

	For the three months ended September 30, 2015
	Income (Numerator)			Shares (Denominator)	Per Share Amount
	(in thousands, except for per share amounts)
Basic Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	184,082		153,595	$	1.20
Allocation of undistributed earnings to participating securities	(221		)	—	—
Net income attributable to Boston Properties, Inc. common shareholders	$	183,861		153,595	$	1.20
Effect of Dilutive Securities:
Stock Based Compensation	—			191	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	183,861		153,786	$	1.20

	For the three months ended September 30, 2014
	Income (Numerator)			Shares (Denominator)	Per Share Amount
	(in thousands, except for per share amounts)
Basic Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	127,724		153,120	$	0.83
Allocation of undistributed earnings to participating securities	(63		)	—	—
Net income attributable to Boston Properties, Inc. common shareholders	$	127,661		153,120	$	0.83
Effect of Dilutive Securities:
Stock Based Compensation	—			153	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	127,661		153,273	$	0.83
	For the nine months ended September 30, 2015
	Income (Numerator)			Shares (Denominator)	Per Share Amount
	(in thousands, except for per share amounts)
Basic Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	434,702		153,426	$	2.83
Allocation of undistributed earnings to participating securities	(361		)	—	—
Net income attributable to Boston Properties, Inc. common shareholders	$	434,341		153,426	$	2.83
Effect of Dilutive Securities:
Stock Based Compensation	—			399	(0.01		)
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	434,341		153,825	$	2.82
	For the nine months ended September 30, 2014
	Income (Numerator)			Shares (Denominator)	Per Share Amount
	(in thousands, except for per share amounts)
Basic Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	258,472		153,077	$	1.69
Effect of Dilutive Securities:
Stock Based Compensation	—			151	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	258,472		153,228	$	1.69