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Earnings Per Share / Common Unit (Tables)

6 Months Ended

Jun. 30, 2020

Entity Information [Line Items]

Computation Of Basic And Diluted Earnings Per Share / Unit

			Three months ended June 30, 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			$	266,525					155,386						$	1.72
Allocation of undistributed earnings to participating securities			(336)						—						(0.01)
Net income attributable to Boston Properties, Inc. common shareholders			$	266,189					155,386						$	1.71
Effect of Dilutive Securities:
Stock Based Compensation			—						21						—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders			$	266,189					155,407						$	1.71

			Three months ended June 30, 2019
			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			$	164,318					154,555						$	1.06
Allocation of undistributed earnings to participating securities			(48)						—						—
Net income attributable to Boston Properties, Inc. common shareholders			$	164,270					154,555						$	1.06
Effect of Dilutive Securities:
Stock Based Compensation			—						319						—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders			$	164,270					154,874						$	1.06

			Six months ended June 30, 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			$	764,232					155,199						$	4.92
Allocation of undistributed earnings to participating securities			(1,344)						—						—
Net income attributable to Boston Properties, Inc. common shareholders			$	762,888					155,199						$	4.92
Effect of Dilutive Securities:
Stock Based Compensation			—						134						(0.01)
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders			$	762,888					155,333						$	4.91
			Six months ended June 30, 2019
			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			$	262,431					154,540						$	1.70
Effect of Dilutive Securities:
Stock Based Compensation			—						319						(0.01)
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders			$	262,431					154,859						$	1.69

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 17,273,000 and 17,647,000 redeemable common units for the three months ended June 30, 2020 and 2019, respectively, and 17,405,000 and 17,627,000 redeemable common units for the six months ended June 30, 2020 and 2019, respectively.

			Three months ended June 30, 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			$	301,975					172,659						$	1.75
Allocation of undistributed earnings to participating securities			(374)						—						—
Net income attributable to Boston Properties Limited Partnership common unitholders			$	301,601					172,659						$	1.75
Effect of Dilutive Securities:
Stock Based Compensation			—						21						—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders			$	301,601					172,680						$	1.75
			Three months ended June 30, 2019
			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			$	185,715					172,202						$	1.08
Allocation of undistributed earnings to participating securities			(54)						—						—
Net income attributable to Boston Properties Limited Partnership common unitholders			$	185,661					172,202						$	1.08
Effect of Dilutive Securities:
Stock Based Compensation			—						319						—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders			$	185,661					172,521						$	1.08

			Six months ended June 30, 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			$	868,308					172,604						$	5.03
Allocation of undistributed earnings to participating securities			(1,495)						—						(0.01)
Net income attributable to Boston Properties Limited Partnership common unitholders			$	866,813					172,604						$	5.02
Effect of Dilutive Securities:
Stock Based Compensation			—						134						—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders			$	866,813					172,738						$	5.02
			Six months ended June 30, 2019
			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			$	299,097					172,167						$	1.74
Effect of Dilutive Securities:
Stock Based Compensation			—						319						(0.01)
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders			$	299,097					172,486						$	1.73

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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