Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Disaggregation of Net Revenues) (Details)

v3.21.2
Revenue Recognition (Disaggregation of Net Revenues) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Disaggregation of Revenue [Line Items]        
Net Revenues $ 406 $ 258 $ 709 $ 667
Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 122 61 200 154
Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 119 82 204 188
Cost reimbursements        
Disaggregation of Revenue [Line Items]        
Net Revenues 85 66 155 192
Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 30 22 60 53
Reportable Segments        
Disaggregation of Revenue [Line Items]        
Net Revenues 406 258 709 667
Reportable Segments | Hotel Franchising        
Disaggregation of Revenue [Line Items]        
Net Revenues 283 182 492 425
Reportable Segments | Hotel Franchising | Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 115 59 190 144
Reportable Segments | Hotel Franchising | Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 119 82 204 187
Reportable Segments | Hotel Franchising | License and other fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 20 21 40 42
Reportable Segments | Hotel Franchising | Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 29 20 58 52
Reportable Segments | Hotel Management        
Disaggregation of Revenue [Line Items]        
Net Revenues 123 76 217 242
Reportable Segments | Hotel Management | Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 7 2 10 10
Reportable Segments | Hotel Management | Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues       1
Reportable Segments | Hotel Management | Owned hotel revenues        
Disaggregation of Revenue [Line Items]        
Net Revenues 21 2 34 23
Reportable Segments | Hotel Management | Management fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 9 4 16 15
Reportable Segments | Hotel Management | Cost reimbursements        
Disaggregation of Revenue [Line Items]        
Net Revenues 85 66 155 192
Reportable Segments | Hotel Management | Other        
Disaggregation of Revenue [Line Items]        
Net Revenues $ 1 $ 2 $ 2 $ 1