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Earnings Per Share / Common Unit (Tables)

9 Months Ended

Sep. 30, 2021

Entity Information [Line Items]

Computation Of Basic And Diluted Earnings Per Share / Unit

			Three months ended September 30, 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			$	108,297					156,183						$	0.69
Effect of Dilutive Securities:
Stock Based Compensation			—						415						—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders			$	108,297					156,598						$	0.69
			Three months ended September 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			$	89,854					155,645						$	0.58
Effect of Dilutive Securities:
Stock Based Compensation			—						25						—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders			$	89,854					155,670						$	0.58

			Nine months ended September 30, 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			$	311,680					156,062						$	2.00
Effect of Dilutive Securities:
Stock Based Compensation			—						332						(0.01)
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders			$	311,680					156,394						$	1.99

			Nine months ended September 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			$	854,541					155,349						$	5.50
Allocation of undistributed earnings to participating securities			(1,150)						—						(0.01)
Net income attributable to Boston Properties, Inc. common shareholders			$	853,391					155,349						$	5.49
Effect of Dilutive Securities:
Stock Based Compensation			—						98						—
Diluted Earnings:
Net income attributable to Boston Properties, Inc. common shareholders			$	853,391					155,447						$	5.49

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 17,011,000 and 17,032,000 redeemable common units for the three months ended September 30, 2021 and 2020, respectively, and 17,016,000 and 17,279,000 redeemable common units for the nine months ended September 30, 2021, and 2020, respectively.

			Three months ended September 30, 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			$	122,014					173,194						$	0.70
Effect of Dilutive Securities:
Stock Based Compensation			—						415						—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders			$	122,014					173,609						$	0.70

			Three months ended September 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			$	101,624					172,677						$	0.59
Effect of Dilutive Securities:
Stock Based Compensation			—						25						—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders			$	101,624					172,702						$	0.59

			Nine months ended September 30, 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			$	353,633					173,078						$	2.04
Effect of Dilutive Securities:
Stock Based Compensation			—						332						—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders			$	353,633					173,410						$	2.04
			Nine months ended September 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			$	969,932					172,628						$	5.62
Allocation of undistributed earnings to participating securities			(1,278)						—						(0.01)
Net income attributable to Boston Properties Limited Partnership common unitholders			$	968,654					172,628						$	5.61
Effect of Dilutive Securities:
Stock Based Compensation			—						98						—
Diluted Earnings:
Net income attributable to Boston Properties Limited Partnership common unitholders			$	968,654					172,726						$	5.61

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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://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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