Annual report pursuant to Section 13 and 15(d)

Revenue Recognition (Disaggregation of Net Revenues) (Details)

v3.20.4
Revenue Recognition (Disaggregation of Net Revenues) (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disaggregation of Revenue [Line Items]                      
Net revenues $ 296 $ 337 $ 258 $ 410 $ 492 $ 560 $ 533 $ 468 $ 1,300 $ 2,053 $ 1,868
Concessions of hotel-management fees for past services                   20  
Royalties and franchise fees                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 328 480 441
Marketing, reservation and loyalty                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 370 562 491
License and other fees                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 84 131 111
Cost reimbursements                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 350 623 586
Other                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 104 132 115
Hotel Franchising                      
Disaggregation of Revenue [Line Items]                      
Net revenues 202 236 182 243 300 379 331 269      
Hotel Franchising | Royalties and franchise fees                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 309 465 432
Hotel Franchising | Marketing, reservation and loyalty                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 369 559 489
Hotel Franchising | License and other fees                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 84 131 111
Hotel Franchising | Other                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 101 124 103
Hotel Management                      
Disaggregation of Revenue [Line Items]                      
Net revenues $ 94 $ 101 $ 76 $ 167 $ 190 $ 180 $ 201 $ 197      
Hotel Management | Royalties and franchise fees                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 19 15 9
Hotel Management | Marketing, reservation and loyalty                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 1 3 2
Hotel Management | Hotel management - owned properties                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 37 89 75
Hotel Management | Hotel management - managed properties                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 27 36 49
Hotel Management | Cost reimbursements                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 350 623 586
Hotel Management | Other                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 3 2 5
Reportable Segments | Hotel Franchising                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 863 1,279 1,135
Reportable Segments | Hotel Management                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 437 768 726
Corporate and Other                      
Disaggregation of Revenue [Line Items]                      
Net revenues                 $ 0 $ 6 $ 7