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Earnings Per Share / Common Unit (Tables) | 3 Months Ended
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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 |

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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 + Details
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