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Subsequent Events (Details) $ in Thousands |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |
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Feb. 09, 2024 USD ($) ft² | Feb. 06, 2024 USD ($) shares | Feb. 01, 2024 USD ($) shares | Jan. 25, 2024 USD ($) shares | Jan. 11, 2024 | Jan. 08, 2024 USD ($) ft² | Jun. 28, 2023 | Jun. 27, 2023 USD ($) | Jun. 02, 2023 | Apr. 21, 2023 ft² | Apr. 20, 2023 USD ($) | Aug. 13, 2023 | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 USD ($) shares | Dec. 31, 2021 USD ($) shares | Feb. 02, 2024 shares
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Unsecured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 | $ 0 | $ 1,841,500 |
Common stock, shares issued | shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 157,019,766 | 156,836,767 |  |
Proceeds from Secured Notes Payable |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 600,000 | $ 0 | $ 1,201,388 |
3 Hudson Boulevard [Member] | Unconsolidated Properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |
Number of extensions |  |  |  |  |  |  |  | 1 | 2 |  |  |  |  |  |  |  |
Debt |  |  |  |  |  |  |  |  | $ 80,000 |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  | 3.50% | 3.50% |  |  |  |  |  |  |  |
3 Hudson Boulevard [Member] | Unconsolidated Properties | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  |  | 3.61% |  |  |  |
7750 Wisconsin Avenue [Member] | Unconsolidated Properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |
Net Rentable Area (in sf) | ft² |  |  |  |  |  |  |  |  |  |  | 736,000 |  |  |  |  |  |
Number of extensions |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  | 1.25% | 1.25% |  |  |  |  |
Construction Loan |  |  |  |  |  |  |  |  |  |  |  | $ 252,600 |  |  |  |  |
7750 Wisconsin Avenue [Member] | Unconsolidated Properties | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  | 1.35% |  |  |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued | shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 73,762 | 41,818 | 57,383 |
Boston Properties Limited Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Unsecured Debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 | $ 0 | $ 1,841,500 |
Proceeds from Secured Notes Payable |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 600,000 | $ 0 | $ 1,201,388 |
Boston Properties Limited Partnership | MYLTIP 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 352,021 |
Boston Properties Limited Partnership | LTIP Units [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 430,824 | 280,616 | 281,640 |
Senior Notes | Boston Properties Limited Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,550,000 |  |  |
Mortgages [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,200,000 |  |  |
3.916% unsecured senior notes | Senior Notes | Boston Properties Limited Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [1] |  |  |  |  |  |  |  |  |  |  |  |  | 3.80% |  |  |
Debt | [1] |  |  |  |  |  |  |  |  |  |  |  |  | $ 700,000 |  |  |
Subsequent Event [Member] | 3 Hudson Boulevard [Member] | Extended Maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  |  | May 09, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | 3 Hudson Boulevard [Member] | Unconsolidated Properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  |  | $ 80,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | 3 Hudson Boulevard [Member] | Unconsolidated Properties | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 3.61% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | 7750 Wisconsin Avenue [Member] | Extended Maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  | Apr. 26, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | 7750 Wisconsin Avenue [Member] | Unconsolidated Properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Rentable Area (in sf) | ft² |  | 736,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  | $ 251,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Construction Loan |  | $ 252,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | 7750 Wisconsin Avenue [Member] | Unconsolidated Properties | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 1.35% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | 901 New York Avenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments |  |  |  |  |  |  | $ 10,000 |  |  |  |  |  |  |  |  |  |
Net Rentable Area (in sf) | ft² |  |  |  |  |  |  | 548,000 |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | 901 New York Avenue | Joint Venture Partner [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | MYLTIP 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Final awards percentage of target |  |  |  | 112.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Value of MYLTIP Awards |  |  |  | $ 12,600 |  |  |  |  |  |  |  |  |  |  |  |  |
Forfeitures, in units | shares |  |  |  | 155,625 |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 71,124
Subsequent Event [Member] | MYLTIP 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award |  |  |  |  | The 2024 MYLTIP awards consists of three components. Two of the components, each weighted 40%, utilize BXP’s TSR over a three year measurement period as the performance metrics and the third component utilizes a leverage ratio as the performance metric. |  |  |  |  |  |  |  |  |  |  |  |
Value of MYLTIP Awards |  |  |  |  | $ 11,100 |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Boston Properties Limited Partnership | LTIP Units [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | shares |  |  | 429,237 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Boston Properties Limited Partnership | MYLTIP 2024 | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock available for issuance | shares |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Boston Properties Limited Partnership | MYLTIP 2024 | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock available for issuance | shares |  |  |  |  | 330,479 |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Boston Properties Limited Partnership | MYLTIP 2024 | Target |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock available for issuance | shares |  |  |  |  | 165,240 |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | Mortgages [Member] | 901 New York Avenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  |  |  |  | $ 207,100 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 3.61% | 3.61% |  |  |  |  |  |  |  |  |  |
Number of extensions |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | 3.916% unsecured senior notes | Senior Notes | Boston Properties Limited Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 3.80% |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  |  |  | $ 700,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Unsecured Debt |  |  |  | 713,300 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Increase, Accrued Interest |  |  |  | $ 13,300 |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | See Note 17.

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