Deferred Tax - Summary of Estimated Recovery Period For Deferred Tax Balances (Detail) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Statement [Line Items] | ||
| Deferred tax liability | $ 1,005 | $ 394 |
| Total deferred tax liabilities | 1,557 | 991 |
| Deferred tax assets | 1,139 | 1,204 |
| Total deferred tax assets | 1,691 | 1,801 |
| Net deferred tax assets | 134 | 810 |
| Recovered after more than 12 Months [member] | ||
| Statement [Line Items] | ||
| Deferred tax liability | 1,555 | 866 |
| Deferred tax assets | 1,614 | 1,666 |
| Recovered within 12 Months [member] | ||
| Statement [Line Items] | ||
| Deferred tax liability | 2 | 125 |
| Deferred tax assets | $ 77 | $ 135 |