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Employee Stock Plans - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Employee Benefits Disclosure [Line Items] |  |  |
Shares reserved and available for issuance (in shares) | 22.0 |  |
Non-cash stock-based compensation expense | $ 24 | $ 30 | $ 26
Granted (in shares) | 2.0 | 1.8 | 1.8
Vested (in shares) | 1.5 | 2.3 | 1.5
RSU Awards | Executive Officer |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Compensation expense | $ 21 | $ 27 | $ 23
RSU Awards | Vesting over one-year period |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Vesting term | 1 year |  |
RSU Awards | Vesting over two-year period |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Vesting term | 2 years |  |
RSU Awards | Vesting over three-year period |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Vesting term | 3 years |  |
RSU Awards | Time-Based Awards |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Vesting term | 3 years |  |
Percentage of total shares awarded | 25.00% |  |
Percentage of shares expected to be released | 100.00% |  |
RSU Awards | TSR Awards |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Percentage of total shares awarded | 37.50% |  |
RSU Awards | TSR Awards, Performance Period Three |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Performance period | 3 years |  |
RSU Awards | Performance-Based Awards |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Percentage of total shares awarded | 37.50% |  |
Other Stock Plans, upper-middle management awards |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Vesting term | 3 years |  |
Other Stock Plans, employee stock purchase plan |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Employee stock purchase plan discount percentage | 10.00% |  |
Other Stock Plans |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Granted (in shares) | 0.3 | 0.2 | 0.2
Compensation expense | $ 3 | $ 3 | $ 3
Senior Executive Plan | RSU Awards |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Granted (in shares) | 1.7 |  |
Unrecognized compensation cost related to unvested RSU awards | $ 19 |  |
Senior Executive Plan | RSU Awards | Vesting over one-year period |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Vesting term | 1 year |  |
Senior Executive Plan | RSU Awards | Vesting over two-year period |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Vesting term | 2 years |  |
Senior Executive Plan | RSU Awards | Vesting over three-year period |  |  |
Employee Benefits Disclosure [Line Items] |  |  |
Vesting term | 3 years |  |

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