Annual report pursuant to Section 13 and 15(d)

Long-Term Debt and Borrowing Arrangements (Schedule of Company's Indebtedness) (Details)

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Long-Term Debt and Borrowing Arrangements (Schedule of Company's Indebtedness) (Details) - USD ($)
Dec. 31, 2022
Apr. 08, 2022
Dec. 31, 2021
Apr. 15, 2021
Aug. 31, 2020
May 31, 2018
Apr. 30, 2018
Debt Instrument [Line Items]              
Finance leases $ 45,000,000   $ 50,000,000        
Total long-term debt 2,077,000,000   2,084,000,000        
Less: Current portion of long-term debt 20,000,000   21,000,000        
Long-term debt 2,057,000,000   2,063,000,000        
Senior Unsecured Notes due April 2026 [Member]              
Debt Instrument [Line Items]              
Debt instrument, face amount     $ 500,000,000 $ 500,000,000      
Debt instrument, interest rate, stated percentage     5.375%        
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 750,000,000         $ 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 750,000,000            
Long-term debt 0   $ 0        
Long-term Debt | $400 million term loan A (due April 2027)              
Debt Instrument [Line Items]              
Debt instrument, face amount $ 1,600,000,000         $ 1,600,000,000  
Debt instrument, interest rate, stated percentage 3.70%   3.07%        
Long-term debt $ 1,139,000,000   $ 1,541,000,000        
Long-term Debt | Term Loan due 2027              
Debt Instrument [Line Items]              
Debt instrument, face amount 400,000,000            
Long-term debt $ 399,000,000 $ 400,000,000          
Debt, Weighted Average Interest Rate 5.92%            
Senior Notes | Senior Unsecured Notes due April 2026 [Member]              
Debt Instrument [Line Items]              
Debt instrument, interest rate, stated percentage       5.375%     5.375%
Senior Notes | Senior Unsecured Notes due August 2028 [Member]              
Debt Instrument [Line Items]              
Debt instrument, interest rate, stated percentage 4.375%       4.375%    
Long-term debt $ 494,000,000   $ 493,000,000        
Debt, Weighted Average Interest Rate 4.38%   4.38%        
Term loan and senior unsecured notes              
Debt Instrument [Line Items]              
Debt issuance costs $ 11,000,000   $ 15,000,000        
Wyndham Worldwide | Capital lease              
Debt Instrument [Line Items]              
Debt instrument, interest rate, stated percentage 4.50%   4.50%