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

Fair Value (Details) $ in Millions	Jun. 30, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Management guarantee receivable	$ 46
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt	2,145
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt	$ 2,164