v3.26.1
Noncontrolling Interests on the Operating Partnership’s Consolidated Financial Statements (Details)
$ in Thousands
Feb. 20, 2026
USD ($)
a
ft²
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Noncontrolling Interest [Line Items]      
Consolidated property partnerships   $ 172,424 $ 165,025
Redwood City Partners, LLC (“Redwood LLC”)      
Noncontrolling Interest [Line Items]      
Ownership interest   93.00%  
Kilroy Realty L.P.      
Noncontrolling Interest [Line Items]      
Area of land | a 1.1    
Payments to acquire real estate $ 36,000    
Commitments to investments 34,600    
Consolidated property partnerships   $ 9,000  
Kilroy Realty L.P. | Co-venturer      
Noncontrolling Interest [Line Items]      
Distributions to noncontrolling interests in consolidated property partnerships 9,000    
Kilroy Realty L.P. | Minimum      
Noncontrolling Interest [Line Items]      
Unfunded commitments to investments 250,000    
Kilroy Realty L.P. | Maximum      
Noncontrolling Interest [Line Items]      
Unfunded commitments to investments $ 270,000    
Kilroy Realty L.P. | Redwood City Partners, LLC (“Redwood LLC”)      
Noncontrolling Interest [Line Items]      
Office project | ft² 251,000    
Kilroy Realty L.P. | Operating Partnership      
Noncontrolling Interest [Line Items]      
Ownership interest 97.40%