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Earnings Per Share / Common Unit (Tables) | 12 Months Ended
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Dec. 31, 2015
Entity Information [Line Items] |
Computation Of Basic And Diluted Earnings Per Share / Unit |
| For the Year Ended December 31, 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 | $ | 572,606 |  |  | 153,471 |  |  | $ | 3.73 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 373 |  |  | (0.01 | )
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 572,606 |  |  | 153,844 |  |  | $ | 3.72 |
| For the Year Ended December 31, 2014
| 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 | $ | 433,111 |  |  | 153,089 |  |  | $ | 2.83 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 219 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 433,111 |  |  | 153,308 |  |  | $ | 2.83 |
| For the Year Ended December 31, 2013
| Income (Numerator) |  | Shares (Denominator) |  | Per Share Amount
| (in thousands, except for per share amounts)
Basic Earnings: |  |  |  |  |
Income from continuing operations attributable to Boston Properties, Inc. | $ | 618,113 |  |  | 152,201 |  |  | $ | 4.06 |
Discontinued operations attributable to Boston Properties, Inc. | 123,641 |  |  | — |  |  | 0.81 |
Allocation of undistributed earnings to participating securities | (160 | ) |  | — |  |  | — |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 741,594 |  |  | 152,201 |  |  | $ | 4.87 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation and Exchangeable Senior Notes | — |  |  | 320 |  |  | (0.01 | )
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties, Inc. common shareholders | $ | 741,594 |  |  | 152,521 |  |  | $ | 4.86 |
Boston Properties Limited Partnership [Member] |
Entity Information [Line Items] |
Computation Of Basic And Diluted Earnings Per Share / Unit | Other potentially dilutive common units and the related impact on earnings are considered when calculating diluted earnings per common unit. Included in the number of units (the denominator) below are approximately 17,668,000, 17,364,000 and 16,925,000 redeemable common units for the years ended December 31, 2015, 2014 and 2013, respectively.
| For the Year Ended December 31, 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 | $ | 648,748 |  |  | 171,139 |  |  | $ | 3.79 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 373 |  |  | (0.01 | )
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 648,748 |  |  | 171,512 |  |  | $ | 3.78 |
| For the Year Ended December 31, 2014
| 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 | $ | 499,129 |  |  | 170,453 |  |  | $ | 2.93 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation | — |  |  | 219 |  |  | (0.01 | )
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 499,129 |  |  | 170,672 |  |  | $ | 2.92 |
| For the Year Ended December 31, 2013
| Income (Numerator) |  | Units (Denominator) |  | Per Unit Amount
| (in thousands, except for per unit amounts)
Basic Earnings: |  |  |  |  |
Income from continuing operations attributable to Boston Properties Limited Partnership | $ | 700,151 |  |  | 169,126 |  |  | $ | 4.14 |
Discontinued operations attributable to Boston Properties Limited Partnership | 141,365 |  |  | — |  |  | 0.84 |
Allocation of undistributed earnings to participating securities | (178 | ) |  | — |  |  | (0.01 | )
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 841,338 |  |  | 169,126 |  |  | $ | 4.97 |
Effect of Dilutive Securities: |  |  |  |  |
Stock Based Compensation and Exchangeable Senior Notes | — |  |  | 320 |  |  | — |
Diluted Earnings: |  |  |  |  |
Net income attributable to Boston Properties Limited Partnership common unitholders | $ | 841,338 |  |  | 169,446 |  |  | $ | 4.97 |

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