Long-Term Debt and Borrowing Arrangements (Schedule of Company's Indebtedness) (Details) - USD ($)	Dec. 31, 2025	Oct. 31, 2025	Dec. 31, 2024	Apr. 08, 2022	Aug. 31, 2020	May 31, 2018	Apr. 30, 2018
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.36%		4.84%
Total long-term debt	$ 2,560,000,000		$ 2,463,000,000
Less: Current portion of long-term debt	45,000,000		43,000,000
Long-term debt	2,515,000,000		2,420,000,000
Debt Instrument, Unamortized Discount	4,000,000		5,000,000
Senior Unsecured Notes due August 2028 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount					$ 500,000,000
Debt instrument, interest rate, stated percentage					4.375%
$750 million revolving credit facility (due May 2023)
Debt Instrument [Line Items]
Maximum borrowing capacity	1,000,000,000	$ 1,000,000,000.0				$ 1,000,000,000.0	$ 750,000,000
Debt issuance costs	4,000,000		$ 2,000,000
Line of Credit \| $750 million revolving credit facility (due May 2023)
Debt Instrument [Line Items]
Debt instrument, face amount	1,000,000,000.0
Debt instrument, interest rate, stated percentage			7.17%
Long-term debt	$ 224,000,000		$ 88,000,000
Debt, Weighted Average Interest Rate	6.03%
Long-term Debt \| $400 million term loan A (due April 2027)
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,500,000,000
Debt instrument, interest rate, stated percentage			4.20%
Long-term debt			$ 1,515,000,000
Long-term Debt \| Term Loan due 2027
Debt Instrument [Line Items]
Debt instrument, face amount	400,000,000
Debt instrument, interest rate, stated percentage			7.02%
Long-term debt	$ 337,000,000		$ 364,000,000	$ 400,000,000
Debt, Weighted Average Interest Rate	6.10%
Long-term Debt \| Term Loan due 2030
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,500,000,000
Debt instrument, interest rate, stated percentage	5.42%
Long-term debt	$ 1,502,000,000
Senior Notes \| Senior Unsecured Notes due August 2028 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500,000,000
Debt instrument, interest rate, stated percentage	4.375%				4.375%
Long-term debt	$ 497,000,000		$ 496,000,000
Debt, Weighted Average Interest Rate	4.38%		4.38%
Term loan and senior unsecured notes
Debt Instrument [Line Items]
Debt issuance costs	$ 10,000,000		$ 13,000,000

WYNDHAM HOTELS & RESORTS, INC. 10-K