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 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Disaggregation of Revenue [Line Items]        
Net Revenues $ 463 $ 337 $ 1,173 $ 1,004
Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 144 96 344 250
Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 149 99 353 288
Cost reimbursements        
Disaggregation of Revenue [Line Items]        
Net Revenues 86 82 242 274
Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 32 27 92 79
Reportable Segments        
Disaggregation of Revenue [Line Items]        
Net Revenues 463 337 1,173 1,004
Reportable Segments | Hotel Franchising        
Disaggregation of Revenue [Line Items]        
Net Revenues 337 236 829 661
Reportable Segments | Hotel Franchising | Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 137 91 327 234
Reportable Segments | Hotel Franchising | Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 149 99 353 287
Reportable Segments | Hotel Franchising | License and other fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 20 21 60 63
Reportable Segments | Hotel Franchising | Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 31 25 89 77
Reportable Segments | Hotel Management        
Disaggregation of Revenue [Line Items]        
Net Revenues 126 101 344 343
Reportable Segments | Hotel Management | Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 7 5 17 16
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 23 5 57 29
Reportable Segments | Hotel Management | Management fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 9 7 25 21
Reportable Segments | Hotel Management | Cost reimbursements        
Disaggregation of Revenue [Line Items]        
Net Revenues 86 82 242 274
Reportable Segments | Hotel Management | Other        
Disaggregation of Revenue [Line Items]        
Net Revenues $ 1 $ 2 $ 3 $ 2