Discontinued Operations - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Income loss from continuing and discontinued operations [line items] | ||
| Earnings (Loss) from discontinued operations, after tax | $ 2 | $ (27) |
| Discontinued operations [member] | ||
| Income loss from continuing and discontinued operations [line items] | ||
| Earnings (Loss) from discontinued operations, after tax | 2 | (27) |
| Tax benefit (expense) on (loss) earnings from discontinued operations | $ 10 | $ 15 |