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v3.24.3

Unsecured Senior Notes (Narrative) (Details) - USD ($) $ in Thousands |  |  |  | 9 Months Ended
--- | --- | --- | --- | ---
Aug. 26, 2024 | Feb. 01, 2024 | Oct. 26, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Debt Instrument [Line Items] |  |  |  |  |
Proceeds from Secured Notes Payable |  |  | $ 600,000 |  |
Repayments of Unsecured Debt |  |  |  | $ 700,000 | $ 500,000
Proceeds from unsecured senior notes |  |  |  | 849,671 | 747,727
Boston Properties Limited Partnership |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Repayments of Unsecured Debt |  |  |  | 700,000 | 500,000
Proceeds from unsecured senior notes |  |  |  | 849,671 | $ 747,727
Senior Notes | Boston Properties Limited Partnership |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt |  |  |  | 10,700,000 |
3.916% unsecured senior notes | Senior Notes | Boston Properties Limited Partnership |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt |  | $ 700,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.80% |  |  |
Repayments of Unsecured Debt |  | $ 713,300 |  |  |
Debt Instrument, Increase, Accrued Interest |  | $ 13,300 |  |  |
Five point Eight Four Two Percent | Senior Notes | Boston Properties Limited Partnership |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt | $ 850,000 |  |  | $ 850,000 |
Debt Instrument, Interest Rate, Stated Percentage | 5.75% |  |  | 5.75% |
Debt Instrument, Interest Rate, Effective Percentage | 5.842% |  |  | 5.842% |
Senior Notes Pricing | 99.961% |  |  |  |
Proceeds from unsecured senior notes | $ 841,900 |  |  |  |

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