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v3.25.0.1

Secured and Unsecured Debt of the Operating Partnership - Unsecured Revolving Credit Facility and Term Loan Facility (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Sep. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of unsecured debt | $ 403,700,000 |  |  | $ 723,712,000 | $ 0 | $ 0
Principal amount of debt | 425,000,000 |  |  | 425,000,000 |  |
Kilroy Realty L.P. |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of unsecured debt |  |  |  | 723,712,000 | 0 | $ 0
Revolving credit facility | Kilroy Realty L.P. |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 1,100,000,000 |  |  | 1,100,000,000 | 1,100,000,000 |
Remaining borrowing capacity | $ 1,100,000,000 |  |  | $ 1,100,000,000 | $ 1,100,000,000 |
Revolving credit facility | Kilroy Realty L.P. | 2022 Term Loan Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | $ 1,100,000,000 |  |  |
Term Loan Facility | Kilroy Realty L.P. | 2022 Term Loan Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | 520,000,000 |  |  |
Repayments of unsecured debt |  | $ 120,000,000 | 200,000,000 |  |  |
Term Loan Facility | Kilroy Realty L.P. | Unsecured New Term Loan Facility |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount of debt |  |  | 200,000,000 |  |  |
Remaining borrowing capacity |  |  | $ 320,000,000 |  |  |
Maturity period |  |  | 12 months |  |  |

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