Taxation - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Disclosure Of Income Taxes [Line Items] | ||
| Income taxes rate | 26.50% | 26.50% |
| Effective income tax expense (benefit) rate | 22.00% | 5.80% |
| Tax expense | $ 1,607 | $ 71 |
| Percentage of increase in effective tax rate | 1.00% | |
| Sensitivity to change in effective tax rate | $ 73 | |
| Deferred tax benefit | 662 | (231) |
| Investments accounted for using equity method [member] | ||
| Disclosure Of Income Taxes [Line Items] | ||
| Tax expense | $ 1,497 | |
| Assets owned by foreign subsidiary [Member] | ||
| Disclosure Of Income Taxes [Line Items] | ||
| Deferred tax benefit | $ (138) | |