Long-Term Debt Long-Term Debt - Schedule of Long-Term Debt - Footnotes (Details) - USD ($) $ in Millions		Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Debt issuance costs, net in other assets	[1]	$ 47	$ 24

[1] Unamortized deferred financing costs of $47 million and $24 million as of December 31, 2018 and 2017, respectively, related to the U.S., Macao and Singapore revolving credit facilities are included in other assets, net in the accompanying consolidated balance sheets.