Wyndham Hotels & Resorts, Inc. Annual report pursuant to Section 13 and 15(d)

Revenue Recognition (Contract Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Contract liabilities	$ 273	$ 248
Deferred initial franchise fee revenue
Disaggregation of Revenue [Line Items]
Contract liabilities	127	116
Deferred loyalty program revenue
Disaggregation of Revenue [Line Items]
Contract liabilities	74	54
Deferred co-branded credit card programs revenue
Disaggregation of Revenue [Line Items]
Contract liabilities	30	37
Deferred hotel management fee revenue
Disaggregation of Revenue [Line Items]
Contract liabilities	21	19
Deferred other revenue
Disaggregation of Revenue [Line Items]
Contract liabilities	$ 21	$ 22