Advances and Other Receivables, Net - Advances and Other Receivables Roll Forward (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Advances And Other Receivables, Reserves [Roll Forward]
Balance - beginning of period	$ 168	$ 47
Provision and other additions	30	30
Write-offs	(5)	(6)
Balance - end of period	193	71
Cumulative incurred losses related to advances and other receivables associated with inactive and liquidated loans	$ (10)	$ (11)