Earnings Per Share / Common Unit (Tables)

6 Months Ended

Jun. 30, 2017

Entity Information [Line Items]

Computation Of Basic And Diluted Earnings Per Share

	Three Months Ended June 30, 2017
	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	$	133,709		154,177	$	0.87
Allocation of undistributed earnings to participating securities	(43		)	—	—
Net income attributable to Boston Properties, Inc. common shareholders	$	133,666		154,177	$	0.87
Effect of Dilutive Securities:
Stock Based Compensation	—			154	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	133,666		154,331	$	0.87
	Three Months Ended June 30, 2016
	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	$	96,597		153,662	$	0.63
Effect of Dilutive Securities:
Stock Based Compensation	—			198	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	96,597		153,860	$	0.63
	Six Months Ended June 30, 2017
	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	$	230,764		154,019	$	1.50
Allocation of undistributed earnings to participating securities	(9		)	—	—
Net income attributable to Boston Properties, Inc. common shareholders	$	230,755		154,019	$	1.50
Effect of Dilutive Securities:
Stock Based Compensation	—			254	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	230,755		154,273	$	1.50

	Six Months Ended June 30, 2016
	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	$	278,323		153,644	$	1.81
Allocation of undistributed earnings to participating securities	(241		)	—	—
Net income attributable to Boston Properties, Inc. common shareholders	$	278,082		153,644	$	1.81
Effect of Dilutive Securities:
Stock Based Compensation	—			245	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	278,082		153,889	$	1.81

Boston Properties Limited Partnership

Entity Information [Line Items]

Computation Of Basic And Diluted Earnings Per Share

	Three Months Ended June 30, 2017
	Income (Numerator)			Units (Denominator)	Per Unit Amount
	(in thousands, except for per unit amounts)
Basic Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	151,844		171,675	$	0.88
Allocation of undistributed earnings to participating securities	(48		)	—	—
Net income attributable to Boston Properties Limited Partnership common unitholders	$	151,796		171,675	$	0.88
Effect of Dilutive Securities:
Stock Based Compensation	—			154	—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	151,796		171,829	$	0.88

	Three Months Ended June 30, 2016
	Income (Numerator)			Units (Denominator)	Per Unit Amount
	(in thousands, except for per unit amounts)
Basic Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	109,938		171,370	$	0.64
Effect of Dilutive Securities:
Stock Based Compensation	—			198	—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	109,938		171,568	$	0.64
	Six Months Ended June 30, 2017
	Income (Numerator)			Units (Denominator)	Per Unit Amount
	(in thousands, except for per unit amounts)
Basic Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	262,506		171,628	$	1.53
Allocation of undistributed earnings to participating securities	(10		)	—	—
Net income attributable to Boston Properties Limited Partnership common unitholders	$	262,496		171,628	$	1.53
Effect of Dilutive Securities:
Stock Based Compensation	—			254	—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	262,496		171,882	$	1.53
	Six Months Ended June 30, 2016
	Income (Numerator)			Units (Denominator)	Per Unit Amount
	(in thousands, except for per unit amounts)
Basic Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	317,234		171,339	$	1.85
Allocation of undistributed earnings to participating securities	(269		)	—	—
Net income attributable to Boston Properties Limited Partnership common unitholders	$	316,965		171,339	$	1.85
Effect of Dilutive Securities:
Stock Based Compensation	—			245	—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	316,965		171,584	$	1.85