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Employee Benefit Plans - Pre-tax Net Changes in Projected Benefit Obligations Recognized in Other Comprehensive Income (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total recognized in other comprehensive income (loss) | $ (2) | $ (15) | $ (37)
Pension |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Actuarial (gain) loss arising during the year | (9) | 7 |
Amortization of loss included in net periodic benefit cost | (3) | (2) |
Recognition of gain (loss) due to curtailment | 2 | (5) |
Recognition of loss due to settlement | 0 | (2) |
Foreign currency exchange | (2) | 3 |
Total recognized in other comprehensive income (loss) | (12) | 1 |
Postemployment |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Actuarial (gain) loss arising during the year | 10 | 15 |
Amortization of loss included in net periodic benefit cost | (8) | (7) |
Recognition of gain (loss) due to curtailment | 0 | 0 |
Recognition of loss due to settlement | 0 | 0 |
Foreign currency exchange | 0 | 0 |
Total recognized in other comprehensive income (loss) | $ 2 | $ 8 |

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