Earnings Per Share / Common Unit (Tables)

6 Months Ended

Jun. 30, 2018

Entity Information [Line Items]

Computation Of Basic And Diluted Earnings Per Share

	Three months ended June 30, 2018
	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	$	128,681		154,415	$	0.83
Allocation of undistributed earnings to participating securities	(16		)	—	—
Net income attributable to Boston Properties, Inc. common shareholders	$	128,665		154,415	$	0.83
Effect of Dilutive Securities:
Stock Based Compensation	—			156	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	128,665		154,571	$	0.83

	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
	Six months ended June 30, 2018
	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	$	304,682		154,400	$	1.97
Allocation of undistributed earnings to participating securities	(142		)	—	—
Net income attributable to Boston Properties, Inc. common shareholders	$	304,540		154,400	$	1.97
Effect of Dilutive Securities:
Stock Based Compensation	—			238	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	304,540		154,638	$	1.97
	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

Boston Properties Limited Partnership

Entity Information [Line Items]

Computation Of Basic And Diluted Earnings Per Share

	Three months ended June 30, 2018
	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	$	145,961		171,916	$	0.85
Allocation of undistributed earnings to participating securities	(18		)	—	—
Net income attributable to Boston Properties Limited Partnership common unitholders	$	145,943		171,916	$	0.85
Effect of Dilutive Securities:
Stock Based Compensation	—			156	—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	145,943		172,072	$	0.85

	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
	Six months ended June 30, 2018
	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	$	346,868		171,892	$	2.02
Allocation of undistributed earnings to participating securities	(158		)	—	—
Net income attributable to Boston Properties Limited Partnership common unitholders	$	346,710		171,892	$	2.02
Effect of Dilutive Securities:
Stock Based Compensation	—			238	(0.01		)
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	346,710		172,130	$	2.01
	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