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, 2021
Apr. 15, 2021
Dec. 31, 2020
Aug. 31, 2020
May 31, 2018
Apr. 30, 2018
Debt Instrument [Line Items]            
Finance leases $ 50,000,000   $ 55,000,000      
Total long-term debt 2,084,000,000   2,597,000,000      
Less: Current portion of long-term debt 21,000,000   21,000,000      
Long-term debt 2,063,000,000   2,576,000,000      
Senior Unsecured Notes due August 2028 [Member]            
Debt Instrument [Line Items]            
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 2,000,000   4,000,000      
Line of Credit | $750 million revolving credit facility (due May 2023)            
Debt Instrument [Line Items]            
Long-term debt $ 0   $ 0      
Long-term Debt | Term loan (due May 2025)            
Debt Instrument [Line Items]            
Debt instrument, interest rate, stated percentage 3.07%   3.18%      
Long-term debt $ 1,541,000,000   $ 1,554,000,000      
Senior Notes | 5.375% senior unsecured notes (due April 2026)            
Debt Instrument [Line Items]            
Debt instrument, interest rate, stated percentage 5.375% 5.38%     5.375%
Long-term debt $ 0   $ 496,000,000      
Senior Notes | Senior Unsecured Notes due August 2028 [Member]            
Debt Instrument [Line Items]            
Debt instrument, interest rate, stated percentage       4.375%    
Long-term debt $ 493,000,000   $ 492,000,000      
Debt, Weighted Average Interest Rate 4.38%   4.38%      
Term loan and senior unsecured notes            
Debt Instrument [Line Items]            
Debt issuance costs $ 15,000,000   $ 22,000,000      
Wyndham Worldwide | Capital lease            
Debt Instrument [Line Items]            
Debt instrument, interest rate, stated percentage 4.50%   4.50%