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CONSOLIDATED STATEMENTS OF CAPITAL (KILROY REALTY, L.P.) (Parenthetical) - $ / shares | 3 Months Ended
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Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022
Kilroy Realty L.P. |  |  |  |  |  |
Dividends declared per common unit (in dollars per unit) | $ 0.54 | $ 0.54 | $ 0.54 | $ 0.54 | $ 0.52 | $ 0.52

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- Definition Cash dividends declared or paid to each outstanding limited partnership and general partnership unit during the reporting period. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=krc_KilroyRealtyL.P.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |