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Supplemental Cash Flow Information of the Operating Partnership - Reconciliation of Cash and Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents	$ 146,711	$ 165,690	$ 855,007	$ 510,163
Restricted cash	0	0	0	0
Cash and cash equivalents and restricted cash	146,711	165,690	855,007	510,163
Kilroy Realty L.P.
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH:
Cash and cash equivalents	146,711	165,690		510,163
Restricted cash	0	0		0
Cash and cash equivalents and restricted cash	$ 146,711	$ 165,690	$ 855,007	$ 510,163

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