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Secured and Unsecured Debt of the Operating Partnership - Unsecured Revolving Credit Facility (Details) - Revolving credit facility - Kilroy Realty L.P. | 1 Months Ended |  |
--- | --- | --- | ---
Apr. 29, 2021 USD ($) extensionOption | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |  |
Line of credit facility, maximum borrowing capacity | $ | $ 1,100,000,000 | $ 1,100,000,000 | $ 750,000,000
Line of Credit, Number of Extension Options | extensionOption | 2 |  |
Line of Credit, Extension Period | 6 months |  |
Debt Instrument, Interest Rate Reduction if Sustainability Performance Targets Met | 0.01% |  |

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- Definition Line of Credit, Extension Period + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Details
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- Details
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