v3.26.1
Supplemental Cash Flows Information of the Company and the Operating Partnership - Supplemental Cash Flow (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Other Significant Noncash Transactions [Line Items]    
Capitalized interest $ 13,236 $ 19,166
Cash paid for interest, net of capitalized interest of $$13,236 and $19,166, respectively 30,584 24,500
Cash paid for amounts included in the measurement of ground lease liabilities 1,903 2,325
NON-CASH INVESTING TRANSACTIONS:    
Accrual for expenditures for operating properties and development and redevelopment properties 19,863 23,115
Tenant improvements funded directly by tenants 1,403 1,032
Non-refundable deposits held in escrow for future dispositions 6,000 0
Contribution of land by noncontrolling interest to consolidated property partnership 9,000 0
NON-CASH FINANCING TRANSACTIONS:    
Issuance of RSU dividend equivalents 4,416 1,476
Accrual of dividends and distributions payable to common stockholders and common unitholders 63,421 64,990
Kilroy Realty L.P.    
Other Significant Noncash Transactions [Line Items]    
Capitalized interest 13,236 19,166
Cash paid for interest, net of capitalized interest of $$13,236 and $19,166, respectively 30,584 24,500
Cash paid for amounts included in the measurement of ground lease liabilities 1,903 2,325
NON-CASH INVESTING TRANSACTIONS:    
Accrual for expenditures for operating properties and development and redevelopment properties 19,863 23,115
Tenant improvements funded directly by tenants 1,403 1,032
Non-refundable deposits held in escrow for future dispositions 6,000 0
Contribution of land by noncontrolling interest to consolidated property partnership 9,000 0
NON-CASH FINANCING TRANSACTIONS:    
Issuance of RSU dividend equivalents 4,416 1,476
Accrual of dividends and distributions payable to common stockholders and common unitholders $ 63,421 $ 64,990