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Earnings Per Share / Common Unit (Tables) | 6 Months Ended
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Jun. 30, 2016
Entity Information [Line Items] |
Computation Of Basic And Diluted Earnings Per Share |
| Three Months Ended June 30, 2016
| 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 | $ | 96,597 |  |  | 153,662 |  |  | $ | 0.63 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 198 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 96,597 |  |  | 153,860 |  |  | $ | 0.63 |
| Three Months Ended June 30, 2015
| 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 | $ | 79,460 |  |  | 153,450 |  |  | $ | 0.52 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 365 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 79,460 |  |  | 153,815 |  |  | $ | 0.52 |
| Six Months Ended June 30, 2016
| 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 | $ | 278,323 |  |  | 153,644 |  |  | $ | 1.81 |
Allocation of undistributed earnings to participating securities | (241 | ) |  | — |  |  | — |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 278,082 |  |  | 153,644 |  |  | $ | 1.81 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 245 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 278,082 |  |  | 153,889 |  |  | $ | 1.81 |
| Six Months Ended June 30, 2015
| 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 | $ | 250,694 |  |  | 153,341 |  |  | $ | 1.63 |
Allocation of undistributed earnings to participating securities | (141 | ) |  | — |  |  | — |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 250,553 |  |  | 153,341 |  |  | $ | 1.63 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 504 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 250,553 |  |  | 153,845 |  |  | $ | 1.63 |
Boston Properties Limited Partnership |
Entity Information [Line Items] |
Computation Of Basic And Diluted Earnings Per Share |
| Three Months Ended June 30, 2016
| 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 | $ | 109,938 |  |  | 171,370 |  |  | $ | 0.64 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 198 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 109,938 |  |  | 171,568 |  |  | $ | 0.64 |
| Three Months Ended June 30, 2015
| 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 | $ | 90,852 |  |  | 171,146 |  |  | $ | 0.53 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 365 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 90,852 |  |  | 171,511 |  |  | $ | 0.53 |
| Six Months Ended June 30, 2016
| 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 | $ | 317,234 |  |  | 171,339 |  |  | $ | 1.85 |
Allocation of undistributed earnings to participating securities | (269 | ) |  | — |  |  | — |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 316,965 |  |  | 171,339 |  |  | $ | 1.85 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 245 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 316,965 |  |  | 171,584 |  |  | $ | 1.85 |
| Six Months Ended June 30, 2015
| 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 | $ | 284,221 |  |  | 171,116 |  |  | $ | 1.66 |
Allocation of undistributed earnings to participating securities | (157 | ) |  | — |  |  | — |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 284,064 |  |  | 171,116 |  |  | $ | 1.66 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 504 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 284,064 |  |  | 171,620 |  |  | $ | 1.66 |

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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/2003/role/presentationRef -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 + Details
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