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Schedule of Unsecured Senior Notes (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Instrument [Line Items] |  |  |
Debt Issuance Costs, Net |  | $ 18,000 |
Senior Notes |  | 9,806,100 | $ 10,645,077
Boston Properties Limited Partnership |  |  |
Debt Instrument [Line Items] |  |  |
Debt |  | 9,850,000 |
Debt Issuance Costs, Net |  | 18,000 |
Senior Notes |  | 9,806,100 | $ 10,645,077
Boston Properties Limited Partnership | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Unamortized Discount |  | 8,371 |
Debt Issuance Costs, Net |  | $ 35,529 |
Boston Properties Limited Partnership | Senior Notes | 3.766% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [1] | 3.65% |
Debt Instrument, Interest Rate, Effective Percentage | [1],[2] | 3.766% |
Debt | [1] | $ 1,000,000 |
Long-term Debt, Maturity Date | [1],[3] | Feb. 01, 2026 |
Boston Properties Limited Partnership | Senior Notes | 3.495% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.75% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 3.495% |
Debt |  | $ 1,000,000 |
Long-term Debt, Maturity Date | [3] | Oct. 01, 2026 |
Boston Properties Limited Partnership | Senior Notes | 6.924% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 6.75% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 6.924% |
Debt |  | $ 750,000 |
Long-term Debt, Maturity Date | [3] | Dec. 01, 2027 |
Boston Properties Limited Partnership | Senior Notes | 4.628% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.50% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 4.628% |
Debt |  | $ 1,000,000 |
Long-term Debt, Maturity Date | [3] | Dec. 01, 2028 |
Boston Properties Limited Partnership | Senior Notes | 3.505% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.40% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 3.505% |
Debt |  | $ 850,000 |
Long-term Debt, Maturity Date | [3] | Jun. 21, 2029 |
Boston Properties Limited Partnership | Senior Notes | 2.984% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.90% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 2.984% |
Debt |  | $ 700,000 |
Long-term Debt, Maturity Date | [3] | Mar. 15, 2030 |
Boston Properties Limited Partnership | Senior Notes | 3.343 % unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.25% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 3.343% |
Debt |  | $ 1,250,000 |
Long-term Debt, Maturity Date | [3] | Jan. 30, 2031 |
Boston Properties Limited Partnership | Senior Notes | 2.671% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.55% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 2.671% |
Debt |  | $ 850,000 |
Long-term Debt, Maturity Date | [3] | Apr. 01, 2032 |
Boston Properties Limited Partnership | Senior Notes | 2.524% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.45% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 2.524% |
Debt |  | $ 850,000 |
Long-term Debt, Maturity Date | [3] | Oct. 01, 2033 |
Boston Properties Limited Partnership | Senior Notes | 6.619% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 6.50% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 6.619% |
Debt |  | $ 750,000 |
Long-term Debt, Maturity Date | [3] | Jan. 15, 2034 |
Boston Properties Limited Partnership | Senior Notes | 5.842% unsecured senior notes |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.75% |
Debt Instrument, Interest Rate, Effective Percentage | [2] | 5.842% |
Debt |  | $ 850,000 |
Long-term Debt, Maturity Date | [3] | Jan. 15, 2035 |
[1] | See Note 17.
[2] | Yield on issuance date including the effects of discounts on the notes, settlements of interest rate contracts and the amortization of financing costs.
[3] | No principal amounts are due prior to maturity.

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