Financial Instruments - Summary of Financial Assets and Liabilities (Parenthetical) (Detail) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Disclosure Of Share Capital [Line Items] | ||
| Other financial liabilities | $ 175 | $ 376 |
| Current lease liabilities | 64 | 83 |
| Non-current lease liabilities | 197 | 223 |
| Share Repurchase Program [Member] | ||
| Disclosure Of Share Capital [Line Items] | ||
| Other financial liabilities | $ 200 | $ 200 |