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Earnings Per Share / Common Unit (Tables) | 6 Months Ended
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Jun. 30, 2017
Entity Information [Line Items] |
Computation Of Basic And Diluted Earnings Per Share |
| Three Months Ended June 30, 2017
| 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 | $ | 133,709 |  |  | 154,177 |  |  | $ | 0.87 |
Allocation of undistributed earnings to participating securities | (43 | ) |  | — |  |  | — |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 133,666 |  |  | 154,177 |  |  | $ | 0.87 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 154 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 133,666 |  |  | 154,331 |  |  | $ | 0.87 |
| 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 |
| Six Months Ended June 30, 2017
| 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 | $ | 230,764 |  |  | 154,019 |  |  | $ | 1.50 |
Allocation of undistributed earnings to participating securities | (9 | ) |  | — |  |  | — |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 230,755 |  |  | 154,019 |  |  | $ | 1.50 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 254 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 230,755 |  |  | 154,273 |  |  | $ | 1.50 |
| 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 |
Boston Properties Limited Partnership |
Entity Information [Line Items] |
Computation Of Basic And Diluted Earnings Per Share |
| Three Months Ended June 30, 2017
| 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 | $ | 151,844 |  |  | 171,675 |  |  | $ | 0.88 |
Allocation of undistributed earnings to participating securities | (48 | ) |  | — |  |  | — |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 151,796 |  |  | 171,675 |  |  | $ | 0.88 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 154 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 151,796 |  |  | 171,829 |  |  | $ | 0.88 |
| 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 |
| Six Months Ended June 30, 2017
| 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 | $ | 262,506 |  |  | 171,628 |  |  | $ | 1.53 |
Allocation of undistributed earnings to participating securities | (10 | ) |  | — |  |  | — |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 262,496 |  |  | 171,628 |  |  | $ | 1.53 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 254 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 262,496 |  |  | 171,882 |  |  | $ | 1.53 |
| 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 |

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