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Fair Value Measurements - Summary of Carrying Value and Fair Value of Non-recourse Property Debt (Details) - Non-recourse property debt [Member] - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Carrying Value [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Non-recourse property debt $ 3,027,991 $ 3,646,093
Fair Value [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Non-recourse property debt $ 3,128,441 $ 3,730,621