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

Revenue Recognition (Contract Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Contract liabilities	$ 283	$ 273
Deferred initial franchise fee revenue
Disaggregation of Revenue [Line Items]
Contract liabilities	136	127
Deferred loyalty program revenue
Disaggregation of Revenue [Line Items]
Contract liabilities	86	74
Co-branded credit cards program
Disaggregation of Revenue [Line Items]
Contract liabilities	34	30
Deferred hotel management fee revenue
Disaggregation of Revenue [Line Items]
Contract liabilities	0	21
Product and Service, Other [Member]
Disaggregation of Revenue [Line Items]
Contract liabilities	$ 27	$ 21
Maximum
Disaggregation of Revenue [Line Items]
Standard Management Agreement, Term	20 years
Minimum
Disaggregation of Revenue [Line Items]
Standard Management Agreement, Term	10 years