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Noncontrolling Interests Common units distributions (Details) - $ / shares | Jul. 31, 2017 | Apr. 28, 2017 | Jan. 30, 2017 | Sep. 15, 2017
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Dividends Payable [Line Items] |  |  |  |
Distributions Declared To OP And LTIP Units Per Unit |  |  |  | $ 0.75
Distributions Declared To MYLTIP Units Per Unit (in dollars per unit) |  |  |  | $ 0.075
Boston Properties Limited Partnership |  |  |  |
Dividends Payable [Line Items] |  |  |  |
Distributions made to OP and LTIP units per unit (in dollars per unit) | $ 0.75 | $ 0.75 | $ 0.75 |
Distribution paid to MYLTIP Units (in dollars per unit) | $ 0.075 | $ 0.075 | $ 0.075 |

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