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Employee Benefit Plans - Schedule of Defined Benefit Plan Assets (Detail) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
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Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined benefit plan assets, amount | $ 32 | $ 34 | $ 31
Defined benefit plan assets, percentage | 100.00% | 100.00% |
Debt Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined benefit plan assets, amount | $ 17 | $ 18 |
Defined benefit plan assets, percentage | 54.00% | 54.00% |
Equity Securities [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined benefit plan assets, amount | $ 8 | $ 9 |
Defined benefit plan assets, percentage | 25.00% | 24.00% |
Cash [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined benefit plan assets, amount | $ 3 | $ 3 |
Defined benefit plan assets, percentage | 10.00% | 10.00% |
Other [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined benefit plan assets, amount | $ 4 | $ 4 |
Defined benefit plan assets, percentage | 11.00% | 12.00% |

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