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Revenue - Summary of Changes in Deferred Revenue (Detail) - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of changes in contact liabilities [line items] |  |  |  |  |
Deferred revenue beginning balance | $ 1,564 | $ 1,506 |  |  |
Acquisition of businesses |  | 2 |  |  |
Increase in deferred revenue | 403 | 623 |  |  |
Recognised as revenue | (402) | (566) |  |  |
Exchange and other adjustments | 4 | (1) |  |  |
Deferred revenue ending balance | 1,569 | 1,564 |  |  |
Current |  |  | $ 452 | $ 555 | $ 572
Non-current |  |  | 1,117 | 1,009 | 934
Deferred revenue | 1,569 | 1,506 | 1,569 | 1,564 | 1,506
Loyalty programme [member] |  |  |  |  |
Disclosure of changes in contact liabilities [line items] |  |  |  |  |
Deferred revenue beginning balance | 1,233 | 1,181 |  |  |
Increase in deferred revenue | 344 | 533 |  |  |
Recognised as revenue | (332) | (481) |  |  |
Deferred revenue ending balance | 1,245 | 1,233 |  |  |
Current |  |  | 376 | 476 |
Non-current |  |  | 869 | 757 |
Deferred revenue | 1,245 | 1,233 | 1,245 | 1,233 | 1,181
Other co-brand fees [member] |  |  |  |  |
Disclosure of changes in contact liabilities [line items] |  |  |  |  |
Deferred revenue beginning balance | 66 | 77 |  |  |
Recognised as revenue | (11) | (11) |  |  |
Deferred revenue ending balance | 55 | 66 |  |  |
Current |  |  | 11 | 11 |
Non-current |  |  | 44 | 55 |
Deferred revenue | 55 | 66 | 55 | 66 | 77
Application & re-licensing fees [member] |  |  |  |  |
Disclosure of changes in contact liabilities [line items] |  |  |  |  |
Deferred revenue beginning balance | 172 | 175 |  |  |
Increase in deferred revenue | 14 | 26 |  |  |
Recognised as revenue | (20) | (25) |  |  |
Exchange and other adjustments |  | (4) |  |  |
Deferred revenue ending balance | 166 | 172 |  |  |
Current |  |  | 22 | 25 |
Non-current |  |  | 144 | 147 |
Deferred revenue | 166 | 172 | 166 | 172 | 175
Other [member] |  |  |  |  |
Disclosure of changes in contact liabilities [line items] |  |  |  |  |
Deferred revenue beginning balance | 93 | 73 |  |  |
Acquisition of businesses |  | 2 |  |  |
Increase in deferred revenue | 45 | 64 |  |  |
Recognised as revenue | (39) | (49) |  |  |
Exchange and other adjustments | 4 | 3 |  |  |
Deferred revenue ending balance | 103 | 93 |  |  |
Current |  |  | 43 | 43 |
Non-current |  |  | 60 | 50 |
Deferred revenue | $ 103 | $ 93 | $ 103 | $ 93 | $ 73

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