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, 2019
Dec. 31, 2018
May 31, 2018
Apr. 30, 2018
Debt Instrument [Line Items]        
Finance leases $ 60,000,000 $ 65,000,000    
Total long-term debt 2,122,000,000 2,141,000,000    
Less: Current portion of long-term debt 21,000,000 21,000,000    
Long-term debt 2,101,000,000 2,120,000,000    
$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 5,000,000    
Line of Credit | $750 million revolving credit facility (due May 2023)        
Debt Instrument [Line Items]        
Maximum borrowing capacity 750,000,000      
Long-term debt $ 0 $ 0    
Long-term Debt | Term loan (due May 2025)        
Debt Instrument [Line Items]        
Debt instrument, interest rate, stated percentage 4.00% 4.25%    
Long-term debt $ 1,568,000,000 $ 1,582,000,000    
Long-term Debt | Senior unsecured notes (due April 2026)        
Debt Instrument [Line Items]        
Debt instrument, interest rate, stated percentage       5.375%
Senior Notes | Senior unsecured notes (due April 2026)        
Debt Instrument [Line Items]        
Debt instrument, interest rate, stated percentage 5.375% 5.38%    
Long-term debt $ 494,000,000 $ 494,000,000    
Term loan and senior unsecured notes        
Debt Instrument [Line Items]        
Debt issuance costs $ 18,000,000 $ 21,000,000    
Wyndham Worldwide | Capital lease        
Debt Instrument [Line Items]        
Debt instrument, interest rate, stated percentage 4.50% 4.50%