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Revenue - Summary of Group Revenue Disaggregated By Type of Revenue Stream and By Reportable Segment (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Franchise and base management fees | $ 1,174 | $ 1,156 | $ 1,072
Incentive management fees | 151 | 160 | 150
Central revenue | 185 | 170 | 157
Revenue from fee business | 1,510 | 1,486 | 1,379
Revenue from owned, leased and managed lease hotels | 573 | 447 | 351
System Fund revenues | 1,373 | 1,233 | 1,242
Reimbursement of costs | 1,171 | 1,171 | 1,103
Total revenue | 4,627 | 4,337 | 4,075
Reportable segments [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Total revenue | 2,083 | 1,933 | 1,730
Americas [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Franchise and base management fees | 840 | 835 | 795
Incentive management fees | 13 | 18 | 16
Revenue from fee business | 853 | 853 | 811
Revenue from owned, leased and managed lease hotels | 187 | 198 | 188
Americas [member] | Reportable segments [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Total revenue | 1,040 | 1,051 | 999
EMEAA [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Franchise and base management fees | 247 | 227 | 204
Incentive management fees | 90 | 93 | 90
Revenue from fee business | 337 | 320 | 294
Revenue from owned, leased and managed lease hotels | 386 | 249 | 163
EMEAA [member] | Reportable segments [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Total revenue | 723 | 569 | 457
Greater China [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Franchise and base management fees | 87 | 94 | 73
Incentive management fees | 48 | 49 | 44
Revenue from fee business | 135 | 143 | 117
Greater China [member] | Reportable segments [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Total revenue | 135 | 143 | 117
Central [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Central revenue | 185 | 170 | 157
Revenue from fee business | 185 | 170 | 157
Central [member] | Reportable segments [member] |  |  |
Disclosure of disaggregation of revenue from contracts with customers [line items] |  |  |
Total revenue | $ 185 | $ 170 | $ 157

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