Revenues from Contract with Customers - Contract Liabilities (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018	Dec. 31, 2017
Contract with Customer, Liability [Line Items]
Contract liabilities balance		$ 1,041		$ 1,060
Cash received in advance and not recognized as revenue	[1]	413
Revenue recognized		(288)	[1]	$ (229)	$ (132)
Other	[2]	144
Portion of cash received in advance and not recognized as revenue related to customer loyalty program		$ 239

[1] Includes $239 million related to Hilton Honors.

[2] Primarily the result of changes in estimated transaction prices for our performance obligations related to points issued under Hilton Honors, which had no effect on revenues.