Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt and Borrowing Arrangements (Narrative) (Details)

v3.10.0.1
Long-Term Debt and Borrowing Arrangements (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
May 31, 2018
May 30, 2018
May 31, 2018
Apr. 30, 2018
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Debt Instrument [Line Items]                  
Bridge loan       $ 1,500,000,000          
Capital lease obligation         $ 67,000,000   $ 67,000,000   $ 0
Gains recognized in Accumulated other comprehensive income         5,000,000   7,000,000    
Interest expense         24,000,000 $ 2,000,000 36,000,000 $ 5,000,000  
Interest paid         22,000,000   22,000,000    
Affiliated Entity                  
Debt Instrument [Line Items]                  
Contribution of outstanding borrowings due to former Parent             197,000,000    
Interest Rate Swap                  
Debt Instrument [Line Items]                  
Total notional amount   $ 1,000,000,000.0              
Interest Rate Swap 1                  
Debt Instrument [Line Items]                  
Total notional amount   $ 500,000,000              
Term of derivative contract   5 years              
Fixed interest rate on interest rate swap   2.66%              
Interest Rate Swap 2                  
Debt Instrument [Line Items]                  
Total notional amount   $ 500,000,000              
Term of derivative contract   2 years 6 months              
Fixed interest rate on interest rate swap   2.52%              
Wyndham Worldwide                  
Debt Instrument [Line Items]                  
Capital lease obligation         66,000,000   66,000,000    
Capital lease asset         $ 43,000,000   $ 43,000,000    
Wyndham Worldwide | Affiliated Entity                  
Debt Instrument [Line Items]                  
Contribution of outstanding borrowings due to former Parent     $ 197,000,000            
Debt due to former Parent                 $ 184,000,000
Capital lease | Wyndham Worldwide                  
Debt Instrument [Line Items]                  
Debt instrument, interest rate, stated percentage         4.50%   4.50%    
Term loan (due May 2025)                  
Debt Instrument [Line Items]                  
Amortization of loan, equal installments     1.00%            
Mandatory prepayments, percentage net cash proceeds from issuances or incurrence of debt     100.00%            
Mandatory prepayments, percentage of net cash proceeds from certain sales or other dispositions of assets     100.00%            
Mandatory prepayments, percentage of net cash proceeds from certain sales or other disposition of assets, step down one     50.00%            
Mandatory prepayments, percentage of net cash proceeds from certain sales or other disposition of assets, step down two     0.00%            
Mandatory prepayment in excess of cash flow     50.00%            
Mandatory prepayment in excess of cash flow, step down one     25.00%            
Mandatory prepayment in excess of cash flow, step down two     0.00%            
Term loan (due May 2025) | Long-term Debt                  
Debt Instrument [Line Items]                  
Debt instrument, face amount   $ 1,600,000,000     $ 1,600,000,000.0   $ 1,600,000,000.0    
Aggregate fair value of interest rate swaps         $ 9,000,000   $ 9,000,000    
Senior Secured Credit Facility                  
Debt Instrument [Line Items]                  
Aggregate amount of revolving loans (not to exceed) $ 550,000,000   $ 550,000,000            
Percentage of EBITDA (not to exceed) 100.00%                
5.375% senior unsecured notes (due April 2026) | Senior Notes                  
Debt Instrument [Line Items]                  
Debt instrument, interest rate, stated percentage         5.375%   5.375%    
Net proceeds from issuance of debt       493,000,000          
5.375% senior unsecured notes (due April 2026) | Long-term Debt                  
Debt Instrument [Line Items]                  
Debt instrument, face amount       $ 500,000,000          
Debt instrument, interest rate, stated percentage       5.375% 5.375%   5.375%    
5.375% senior unsecured notes (due April 2026) | Long-term Debt | Wyndham Worldwide                  
Debt Instrument [Line Items]                  
Payments to obtain financing commitments       $ 12,000,000          
LIBOR | Term loan (due May 2025)                  
Debt Instrument [Line Items]                  
Basis spread on variable rate (as a percent)     1.75%            
Basis spread on variable rate, floor (as a percent)     0.00%            
Base Rate | Term loan (due May 2025)                  
Debt Instrument [Line Items]                  
Basis spread on variable rate (as a percent)     0.75%            
$750 million revolving credit facility (due May 2023)                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity $ 750,000,000   $ 750,000,000   $ 750,000,000   $ 750,000,000    
Commitment fee percentage     0.20%            
Debt issuance costs         $ 5,000,000   $ 5,000,000    
$750 million revolving credit facility (due May 2023) | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate (as a percent)     0.50%            
$750 million revolving credit facility (due May 2023) | Minimum | LIBOR                  
Debt Instrument [Line Items]                  
Basis spread on variable rate (as a percent)     1.50%            
$750 million revolving credit facility (due May 2023) | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate (as a percent)     1.00%            
$750 million revolving credit facility (due May 2023) | Maximum | LIBOR                  
Debt Instrument [Line Items]                  
Basis spread on variable rate (as a percent)     2.00%