Earnings Per Share / Common Unit (Tables)

3 Months Ended

Mar. 31, 2021

Entity Information [Line Items]

Computation Of Basic And Diluted Earnings Per Share / Unit

	Three months ended March 31, 2021
	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	$	91,624	155,928	$	0.59
Effect of Dilutive Securities:
Stock Based Compensation	—		171	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	91,624	156,099	$	0.59
	Three months ended March 31, 2020
	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	$	497,496	155,011	$	3.21
Allocation of undistributed earnings to participating securities	(1,011)		—	(0.01)
Net income attributable to Boston Properties, Inc. common shareholders	$	496,485	155,011	$	3.20
Effect of Dilutive Securities:
Stock Based Compensation	—		247	—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders	$	496,485	155,258	$	3.20

Boston Properties Limited Partnership

Entity Information [Line Items]

Computation Of Basic And Diluted Earnings Per Share / Unit

Included in the number of units (the denominator) below are approximately 17,089,000 and 17,538,000 redeemable common units for the three months ended March 31, 2021, and 2020, respectively.

	Three months ended March 31, 2021
	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	$	105,773	173,018	$	0.61
Effect of Dilutive Securities:
Stock Based Compensation	—		171	—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	105,773	173,189	$	0.61
	Three months ended March 31, 2020
	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	$	566,333	172,549	$	3.28
Allocation of undistributed earnings to participating securities	(1,126)		—	—
Net income attributable to Boston Properties Limited Partnership common unitholders	$	565,207	172,549	$	3.28
Effect of Dilutive Securities:
Stock Based Compensation	—		247	(0.01)
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders	$	565,207	172,796	$	3.27