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v3.25.4

Deferred Cash Compensation and Employee Benefit Plans - Additional Information (Detail) | 1 Months Ended | 12 Months Ended
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Jan. 31, 2026 USD ($) | Dec. 31, 2025 USD ($) Installment | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Deferred Compensation Plans [Member] |  |  |  |
Deferred Compensation Plans, Defined Contribution Plans and Defined Benefit Plans [Line Items] |  |  |  |
Other deferred compensation plan liability |  | $ 272,000,000 | $ 220,000,000 |
Deferred compensation, vesting period |  | 3 years |  |
Deferred compensation granted |  | $ 264,000,000 | 114,000,000 | $ 90,000,000
Liabilities related to other deferred cash plans |  | $ 62,000,000 | 34,000,000 |
Deferred Compensation Plans [Member] | Voluntary Deferred Compensation Plan [Member] |  |  |  |
Deferred Compensation Plans, Defined Contribution Plans and Defined Benefit Plans [Line Items] |  |  |  |
Deferred compensation plan, annual percentage of incentive compensation deferred, minimum |  | 1.00% |  |
Deferred compensation plan, annual percentage of incentive compensation deferred, maximum |  | 100.00% |  |
Deferred compensation plan, deferral period, years |  | up to 10 years |  |
Deferred compensation plan, number of annual installments | Installment |  | 10 |  |
Deferred compensation plan liability |  | $ 208,000,000 | 170,000,000 |
Deferred Compensation Plans [Member] | Subsequent Event [Member] |  |  |  |
Deferred Compensation Plans, Defined Contribution Plans and Defined Benefit Plans [Line Items] |  |  |  |
Additional deferred compensation granted | $ 251,000,000 |  |  |
Deferred compensation, vesting period | 3 years |  |  |
Defined Contribution Plans [Member] | U.S. Plan [Member] |  |  |  |
Deferred Compensation Plans, Defined Contribution Plans and Defined Benefit Plans [Line Items] |  |  |  |
Defined contribution plan, employee contribution, percentage of employee compensation, maximum |  | 8.00% |  |
Defined Contribution plan, employer matching contribution percentage of employee contribution |  | 50.00% |  |
Defined contribution plan, employer matching annual contribution, percentage of eligible compensation, minimum |  | 3.00% |  |
Defined contribution plan, employer matching annual contribution, percentage of eligible compensation, maximum |  | 5.00% |  |
Defined contribution plan, employer matching contribution, maximum amount |  | $ 5,000 |  |
Defined contribution plan expense |  | $ 118,000,000 | 149,000,000 | 86,000,000
Defined Contribution Plans [Member] | U.K. Plan [Member] |  |  |  |
Deferred Compensation Plans, Defined Contribution Plans and Defined Benefit Plans [Line Items] |  |  |  |
Defined contribution plan, employee contribution, percentage of employee compensation, maximum |  | 15.00% |  |
Defined contribution plan, employer matching annual contribution, percentage of eligible compensation, minimum |  | 9.00% |  |
Defined contribution plan expense |  | $ 77,000,000 | 66,000,000 | 64,000,000
Defined Contribution Plans [Member] | Other Regions [Member] |  |  |  |
Deferred Compensation Plans, Defined Contribution Plans and Defined Benefit Plans [Line Items] |  |  |  |
Defined contribution plan expense |  | 70,000,000 | 50,000,000 | $ 42,000,000
Defined Benefit Plans [Member] |  |  |  |
Deferred Compensation Plans, Defined Contribution Plans and Defined Benefit Plans [Line Items] |  |  |  |
Deferred compensation plan assets |  | $ 28,000,000 | $ 27,000,000 |

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