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Deferred Leasing Costs and Intangible Assets, net and Intangible Liabilities, net- Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Deferred Leasing Costs and In-place Lease Intangibles | Foothill Research Center Property      
Finite-Lived Intangible Assets      
Impairment loss $ 2.7    
Trade name      
Finite-Lived Intangible Assets      
Impairment loss   $ 8.5  
Below-market Ground Leases | Del Amo      
Finite-Lived Intangible Assets      
Impairment loss   $ 2.4 $ 0.4