Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Disaggregation of Net Revenues) (Details)

v3.20.1
Revenue Recognition (Disaggregation of Net Revenues) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Disaggregation of Revenue [Line Items]    
Net Revenues $ 410 $ 468
Royalties and franchise fees    
Disaggregation of Revenue [Line Items]    
Net Revenues 92 101
Marketing, reservation and loyalty    
Disaggregation of Revenue [Line Items]    
Net Revenues 106 113
Cost reimbursements    
Disaggregation of Revenue [Line Items]    
Net Revenues 126 155
Other    
Disaggregation of Revenue [Line Items]    
Net Revenues 33 31
Reportable Segments    
Disaggregation of Revenue [Line Items]    
Net Revenues 410 466
Reportable Segments | Hotel Franchising    
Disaggregation of Revenue [Line Items]    
Net Revenues 243 269
Reportable Segments | Hotel Franchising | Royalties and franchise fees    
Disaggregation of Revenue [Line Items]    
Net Revenues 84 99
Reportable Segments | Hotel Franchising | Marketing, reservation and loyalty    
Disaggregation of Revenue [Line Items]    
Net Revenues 106 112
Reportable Segments | Hotel Franchising | License and other revenues from former Parent    
Disaggregation of Revenue [Line Items]    
Net Revenues 21 29
Reportable Segments | Hotel Franchising | Other    
Disaggregation of Revenue [Line Items]    
Net Revenues 32 29
Reportable Segments | Hotel Management    
Disaggregation of Revenue [Line Items]    
Net Revenues 167 197
Reportable Segments | Hotel Management | Royalties and franchise fees    
Disaggregation of Revenue [Line Items]    
Net Revenues 8 2
Reportable Segments | Hotel Management | Marketing, reservation and loyalty    
Disaggregation of Revenue [Line Items]    
Net Revenues 0 1
Reportable Segments | Hotel Management | Owned hotel revenues    
Disaggregation of Revenue [Line Items]    
Net Revenues 22 26
Reportable Segments | Hotel Management | Management fees    
Disaggregation of Revenue [Line Items]    
Net Revenues 10 13
Reportable Segments | Hotel Management | Cost reimbursements    
Disaggregation of Revenue [Line Items]    
Net Revenues 126 155
Reportable Segments | Hotel Management | Other    
Disaggregation of Revenue [Line Items]    
Net Revenues 1 0
Corporate and Other    
Disaggregation of Revenue [Line Items]    
Net Revenues $ 0 $ 2