Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Disaggregation of Net Revenues) (Details)

v3.19.2
Revenue Recognition (Disaggregation of Net Revenues) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Disaggregation of Revenue [Line Items]        
Net Revenues $ 533 $ 435 $ 1,001 $ 737
Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 126 113 228 194
Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 140 124 254 208
License and other revenues from former Parent        
Disaggregation of Revenue [Line Items]        
Net Revenues 33 25 61 43
Cost reimbursements        
Disaggregation of Revenue [Line Items]        
Net Revenues 160 114 315 180
Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 38 31 68 54
Reportable Segments        
Disaggregation of Revenue [Line Items]        
Net Revenues 532 435 998 737
Reportable Segments | Hotel Franchising        
Disaggregation of Revenue [Line Items]        
Net Revenues 331 289 600 491
Reportable Segments | Hotel Franchising | Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 124 110 223 188
Reportable Segments | Hotel Franchising | Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 139 124 252 208
Reportable Segments | Hotel Franchising | License and other revenues from former Parent        
Disaggregation of Revenue [Line Items]        
Net Revenues 33 25 61 43
Reportable Segments | Hotel Franchising | Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 35 30 64 52
Reportable Segments | Hotel Management        
Disaggregation of Revenue [Line Items]        
Net Revenues 201 146 398 246
Reportable Segments | Hotel Management | Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 2 3 5 6
Reportable Segments | Hotel Management | Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 1 0 2 0
Reportable Segments | Hotel Management | Hotel management - owned properties        
Disaggregation of Revenue [Line Items]        
Net Revenues 23 19 49 42
Reportable Segments | Hotel Management | Hotel management - managed properties        
Disaggregation of Revenue [Line Items]        
Net Revenues 13 9 26 16
Reportable Segments | Hotel Management | Cost reimbursements        
Disaggregation of Revenue [Line Items]        
Net Revenues 160 114 315 180
Reportable Segments | Hotel Management | Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 2 1 1 2
Corporate and Other        
Disaggregation of Revenue [Line Items]        
Net Revenues $ 1 $ 0 $ 3 $ 0