Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (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] | | | | |
Revenues | $ 250 | $ 1,289 | $ 1,243 | $ 2,530 |
Rooms revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 7 | 276 | 185 | 542 |
Food and beverage | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 3 | 167 | 108 | 327 |
Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 9 | 47 | 49 | 91 |
Owned and leased hotels | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 19 | 490 | 342 | 960 |
Base management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 8 | 68 | 55 | 131 |
Incentive management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | (2) | 39 | 6 | 73 |
Franchise fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 6 | 38 | 33 | 70 |
Other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 4 | 7 | 9 | 13 |
License fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 4 | 6 | 25 | 12 |
Management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 20 | 158 | 128 | 299 |
Amortization of management and franchise agreement assets constituting payments to customers | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | (7) | (6) | (13) | (11) |
Net management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 13 | 152 | 115 | 288 |
Other revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 3 | 28 | 38 | 73 |
Revenues for the reimbursement of costs incurred on behalf of managed and franchised properties | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 215 | 619 | 748 | 1,209 |
Operating segments | Owned and leased hotels | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 20 | 499 | 350 | 976 |
Operating segments | Owned and leased hotels | Rooms revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 8 | 285 | 193 | 558 |
Operating segments | Owned and leased hotels | Food and beverage | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 3 | 167 | 108 | 327 |
Operating segments | Owned and leased hotels | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 9 | 47 | 49 | 91 |
Operating segments | Owned and leased hotels | Owned and leased hotels | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 20 | 499 | 350 | 976 |
Operating segments | Owned and leased hotels | Base management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Owned and leased hotels | Incentive management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Owned and leased hotels | Franchise fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Owned and leased hotels | Other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Owned and leased hotels | License fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Owned and leased hotels | Management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Owned and leased hotels | Amortization of management and franchise agreement assets constituting payments to customers | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Owned and leased hotels | Net management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Owned and leased hotels | Other revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Owned and leased hotels | Revenues for the reimbursement of costs incurred on behalf of managed and franchised properties | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Americas management and franchising | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 192 | 710 | 783 | 1,394 |
Operating segments | Americas management and franchising | Rooms revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Americas management and franchising | Food and beverage | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Americas management and franchising | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Americas management and franchising | Owned and leased hotels | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | Americas management and franchising | Base management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 4 | 62 | 48 | 119 |
Operating segments | Americas management and franchising | Incentive management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | (3) | 19 | 1 | 33 |
Operating segments | Americas management and franchising | Franchise fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 5 | 36 | 32 | 68 |
Operating segments | Americas management and franchising | Other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | 1 | 2 | 1 |
Operating segments | Americas management and franchising | License fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | 1 | 9 | 2 |
Operating segments | Americas management and franchising | Management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 8 | 119 | 92 | 223 |
Operating segments | Americas management and franchising | Amortization of management and franchise agreement assets constituting payments to customers | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | (4) | (3) | (8) | (7) |
Operating segments | Americas management and franchising | Net management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 4 | 116 | 84 | 216 |
Operating segments | Americas management and franchising | Other revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 2 | 19 | 29 | 55 |
Operating segments | Americas management and franchising | Revenues for the reimbursement of costs incurred on behalf of managed and franchised properties | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 186 | 575 | 670 | 1,123 |
Operating segments | ASPAC management and franchising | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 22 | 57 | 67 | 113 |
Operating segments | ASPAC management and franchising | Rooms revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | ASPAC management and franchising | Food and beverage | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | ASPAC management and franchising | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | ASPAC management and franchising | Owned and leased hotels | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | ASPAC management and franchising | Base management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 3 | 10 | 9 | 22 |
Operating segments | ASPAC management and franchising | Incentive management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 17 | 3 | 34 |
Operating segments | ASPAC management and franchising | Franchise fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | 2 | 1 | 2 |
Operating segments | ASPAC management and franchising | Other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 2 | 3 | 4 | 6 |
Operating segments | ASPAC management and franchising | License fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 8 | 0 |
Operating segments | ASPAC management and franchising | Management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 6 | 32 | 25 | 64 |
Operating segments | ASPAC management and franchising | Amortization of management and franchise agreement assets constituting payments to customers | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | (1) | (1) | (2) | (1) |
Operating segments | ASPAC management and franchising | Net management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 5 | 31 | 23 | 63 |
Operating segments | ASPAC management and franchising | Other revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | ASPAC management and franchising | Revenues for the reimbursement of costs incurred on behalf of managed and franchised properties | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 17 | 26 | 44 | 50 |
Operating segments | EAME/SW Asia management and franchising | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 12 | 34 | 41 | 68 |
Operating segments | EAME/SW Asia management and franchising | Rooms revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | EAME/SW Asia management and franchising | Food and beverage | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | EAME/SW Asia management and franchising | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | EAME/SW Asia management and franchising | Owned and leased hotels | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | EAME/SW Asia management and franchising | Base management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | 9 | 8 | 17 |
Operating segments | EAME/SW Asia management and franchising | Incentive management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 9 | 2 | 17 |
Operating segments | EAME/SW Asia management and franchising | Franchise fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | EAME/SW Asia management and franchising | Other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | 1 | 2 | 3 |
Operating segments | EAME/SW Asia management and franchising | License fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | EAME/SW Asia management and franchising | Management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 2 | 19 | 12 | 37 |
Operating segments | EAME/SW Asia management and franchising | Amortization of management and franchise agreement assets constituting payments to customers | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | (2) | (2) | (3) | (3) |
Operating segments | EAME/SW Asia management and franchising | Net management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 17 | 9 | 34 |
Operating segments | EAME/SW Asia management and franchising | Other revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Operating segments | EAME/SW Asia management and franchising | Revenues for the reimbursement of costs incurred on behalf of managed and franchised properties | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 12 | 17 | 32 | 34 |
Corporate and other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 4 | 16 | 20 | 32 |
Corporate and other | Rooms revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Corporate and other | Food and beverage | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Corporate and other | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Corporate and other | Owned and leased hotels | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Corporate and other | Base management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Corporate and other | Incentive management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Corporate and other | Franchise fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Corporate and other | Other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 2 | 1 | 3 |
Corporate and other | License fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 3 | 5 | 8 | 10 |
Corporate and other | Management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 3 | 7 | 9 | 13 |
Corporate and other | Amortization of management and franchise agreement assets constituting payments to customers | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Corporate and other | Net management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 3 | 7 | 9 | 13 |
Corporate and other | Other revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | 8 | 9 | 17 |
Corporate and other | Revenues for the reimbursement of costs incurred on behalf of managed and franchised properties | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 1 | 2 | 2 |
Eliminations | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | (27) | (18) | (53) |
Eliminations | Rooms revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | (1) | (9) | (8) | (16) |
Eliminations | Food and beverage | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Eliminations | Other | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Eliminations | Owned and leased hotels | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | (1) | (9) | (8) | (16) |
Eliminations | Base management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | (13) | (10) | (27) |
Eliminations | Incentive management fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | (6) | 0 | (11) |
Eliminations | Franchise fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Eliminations | Other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Eliminations | License fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Eliminations | Management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | (19) | (10) | (38) |
Eliminations | Amortization of management and franchise agreement assets constituting payments to customers | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Eliminations | Net management, franchise, and other fees | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | (19) | (10) | (38) |
Eliminations | Other revenues | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 1 | 0 | 1 |
Eliminations | Revenues for the reimbursement of costs incurred on behalf of managed and franchised properties | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Eliminations | Owned and leased hotels | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 1 | 9 | 8 | 16 |
Eliminations | Americas management and franchising | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | (1) | 17 | 9 | 34 |
Eliminations | ASPAC management and franchising | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | 0 | 0 | 0 | 0 |
Eliminations | EAME/SW Asia management and franchising | | | | |
Disaggregation of Revenue [Line Items] | | | | |
Revenues | $ 0 | $ 2 | $ 1 | $ 4 |