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Debt - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Restricted cash $ 38 $ 40
Derivative fixed interest rate 1.86%  
Derivative maturity date Apr. 21, 2022  
Derivative notional amount $ 225  
Borrowings under Revolver 1,000  
Revolver [Member] | COVID-19 [Member]    
Debt Instrument [Line Items]    
Borrowings under Revolver 1,000  
CMBS and mortgage loans [Member]    
Debt Instrument [Line Items]    
Restricted cash $ 12 $ 13