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Other Assets - Schedule of Other Assets (Detail) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Other Assets [Abstract]    
Lender and other escrows $ 31 $ 20
Prepaid expenses 15 10
Intangible assets, net 4 4
Federal and state tax receivables 4 0
Other assets 6 9
Total other assets $ 60 $ 43