Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Cash and cash equivalents [abstract] | ||
| Cash at bank and on hand | $ 389 | $ 311 |
| Money market accounts | 389 | 1,476 |
| Cash and cash equivalents | $ 778 | $ 1,787 |