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v3.22.1

Real Estate (Narrative) (Details) $ in Thousands |  |  | 3 Months Ended
--- | --- | --- | ---
Mar. 31, 2022 USD ($) ft² | Apr. 19, 2021 USD ($) a ft² | Mar. 31, 2022 USD ($) ft² | Mar. 31, 2021 USD ($)
Real Estate Properties [Line Items] |  |  |  |
Proceeds from sales of real estate |  |  | $ 35,397 | $ 0
Net income |  |  | 176,957 | 128,147
Boston Properties Limited Partnership |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Proceeds from sales of real estate |  |  | 35,397 | 0
Net income |  |  | $ 179,378 | 131,212
11251 Roger Bacon Drive |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Asset Acquisition, Price of Acquisition, Expected |  | $ 5,600 |  |
Net Rentable Area (in sf) | ft² |  | 65,000 |  |
Area of Land | a |  | 2.6 |  |
Leased percentage |  | 100.00% |  |
195 West Street |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Net Rentable Area (in sf) | ft² | 63,500 |  | 63,500 |
Contractual Sales Price | $ 37,700 |  | $ 37,700 |
Proceeds from sales of real estate | 35,400 |  |  |
Gains (Losses) on Sales of Investment Real Estate | 22,700 |  |  |
Net income |  |  | $ 400 | $ (200)
195 West Street | Boston Properties Limited Partnership |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Gains (Losses) on Sales of Investment Real Estate | $ 23,400 |  |  |

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