Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
May 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Loss Contingencies [Line Items]            
Litigation reserves $ 28,000,000   $ 28,000,000     $ 3,000,000
Litigation receivable covered by insurance $ 25,000,000   $ 25,000,000      
Post-closing credit support, share of incurred losses         0.33  
Post-closing credit support (up to)         $ 87,000,000  
Post-closing credit support, liability         41,000,000  
Post-closing credit support, receivable         $ 27,000,000  
European vacation rental business, life of royalty fee     20 years      
European vacation rental business, royalty fee percentage 1.00%   1.00%      
Royalty fees $ 3,000,000   $ 4,000,000      
Separation and distribution agreement, assumed share of contingent liability 0.33   0.33      
Remaining amount of contingent liability assumed $ 27,000,000   $ 27,000,000      
Affiliated Entity            
Loss Contingencies [Line Items]            
Post-closing credit support, share of incurred losses         0.67  
Post-closing credit support (up to)         $ 46,000,000  
Receivable for share of escrow deposit released 15,000,000   15,000,000      
Post-closing credit support, liability 22,000,000   22,000,000      
Post-closing credit support, receivable $ 15,000,000   $ 15,000,000      
Separation and distribution agreement, assumed share of contingent liability 0.67   0.67      
Other non-current liabilities            
Loss Contingencies [Line Items]            
Post-closing credit support (up to) $ 63,000,000   $ 63,000,000      
Remaining amount of contingent liability assumed 26,000,000   26,000,000      
Receivable            
Loss Contingencies [Line Items]            
Post-closing credit support (up to) 42,000,000   42,000,000      
Other current assets            
Loss Contingencies [Line Items]            
Receivables due from former parent 32,000,000   32,000,000      
Current liabilities            
Loss Contingencies [Line Items]            
Remaining amount of contingent liability assumed 1,000,000   1,000,000      
Maximum            
Loss Contingencies [Line Items]            
Range of possible loss, portion not accrued (up to) 28,000,000   28,000,000      
Wyndham Hotels & Resorts, Inc.            
Loss Contingencies [Line Items]            
Annual cap 26,000,000   26,000,000      
Guarantor obligations, current carrying value 23,000,000   23,000,000     23,000,000
Guarantor offsetting asset carrying value 11,000,000   11,000,000     12,000,000
Amortization expense, contingent asset (less than for 6 months ended 2018 and 2017) 1,000,000 $ 1,000,000 1,000,000 $ 3,000,000    
Guarantees subject to recapture provisions 44,000,000   44,000,000      
Wyndham Hotels & Resorts, Inc. | Other non-current liabilities            
Loss Contingencies [Line Items]            
Guarantor obligations, current carrying value 15,000,000   15,000,000     16,000,000
Wyndham Hotels & Resorts, Inc. | Accrued expenses            
Loss Contingencies [Line Items]            
Guarantor obligations, current carrying value 8,000,000   8,000,000     7,000,000
Wyndham Hotels & Resorts, Inc. | Other non-current assets            
Loss Contingencies [Line Items]            
Guarantor offsetting asset carrying value 10,000,000   10,000,000     1,000,000
Guarantees subject to recapture provisions 42,000,000   42,000,000     41,000,000
Wyndham Hotels & Resorts, Inc. | Other current assets            
Loss Contingencies [Line Items]            
Guarantor offsetting asset carrying value 1,000,000   1,000,000     $ 11,000,000
Guarantees subject to recapture provisions 2,000,000   $ 2,000,000      
Wyndham Hotels & Resorts, Inc. | Minimum            
Loss Contingencies [Line Items]            
Guarantor obligations, term     nine      
Guarantees, remaining life     4 years      
Wyndham Hotels & Resorts, Inc. | Maximum            
Loss Contingencies [Line Items]            
Guarantor obligations, term     ten      
Annual cap $ 104,000,000   $ 104,000,000      
Guarantees, remaining life     6 years      
Wyndham Hotels & Resorts, Inc. | Weighted Average            
Loss Contingencies [Line Items]            
Guarantor obligations, term     five