Annual report pursuant to Section 13 and 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 12 Months Ended
May 31, 2018
May 30, 2018
May 31, 2018
Apr. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]              
Interest Income, Other         $ 7,000,000 $ 1,000,000 $ 0
Bridge loan       $ 1,500,000,000      
Capital lease obligation         65,000,000 0  
Gains recognized in Accumulated other comprehensive income         4,000,000    
Interest expense         67,000,000 7,000,000 $ 1,000,000
Interest paid         56,000,000    
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    
Capital lease asset         $ 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%    
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   $ 1,600,000,000.0     $ 1,600,000,000.0    
Aggregate fair value of interest rate swaps         $ 5,000,000    
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%    
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%    
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    
Commitment fee percentage     0.20%        
Debt issuance costs         $ 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%