Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Disaggregation of Net Revenues) (Details)

v3.20.2
Revenue Recognition (Disaggregation of Net Revenues) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Disaggregation of Revenue [Line Items]        
Net Revenues $ 258 $ 533 $ 667 $ 1,001
Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 61 126 154 228
Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 82 140 188 254
License and other fees        
Disaggregation of Revenue [Line Items]        
Net Revenues     42 61
Cost reimbursements        
Disaggregation of Revenue [Line Items]        
Net Revenues 66 160 192 315
Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 22 38 53 68
Reportable Segments        
Disaggregation of Revenue [Line Items]        
Net Revenues 258 532 667 998
Reportable Segments | Hotel Franchising        
Disaggregation of Revenue [Line Items]        
Net Revenues 182 331 425 600
Reportable Segments | Hotel Franchising | Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 59 124 144 223
Reportable Segments | Hotel Franchising | Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 82 139 187 252
Reportable Segments | Hotel Franchising | License and other fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 21 33 42 61
Reportable Segments | Hotel Franchising | Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 20 35 52 64
Reportable Segments | Hotel Management        
Disaggregation of Revenue [Line Items]        
Net Revenues 76 201 242 398
Reportable Segments | Hotel Management | Royalties and franchise fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 2 2 10 5
Reportable Segments | Hotel Management | Marketing, reservation and loyalty        
Disaggregation of Revenue [Line Items]        
Net Revenues 0 1 1 2
Reportable Segments | Hotel Management | Owned hotel revenues        
Disaggregation of Revenue [Line Items]        
Net Revenues 2 23 23 49
Reportable Segments | Hotel Management | Management fees        
Disaggregation of Revenue [Line Items]        
Net Revenues 4 13 15 26
Reportable Segments | Hotel Management | Cost reimbursements        
Disaggregation of Revenue [Line Items]        
Net Revenues 66 160 192 315
Reportable Segments | Hotel Management | Other        
Disaggregation of Revenue [Line Items]        
Net Revenues 2 2 1 1
Corporate and Other        
Disaggregation of Revenue [Line Items]        
Net Revenues $ 0 $ 1 $ 0 $ 3