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Deferred Cash Compensation and Employee Benefit Plans - Additional Information (Detail)	1 Months Ended	12 Months Ended
	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

X

- Definition

Deferred Compensation Arrangement Vesting Period

+ References

No definition available.

+ Details

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- Definition

Deferred compensation liabilities related to other deferred cash plans.

+ References

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- Definition

Deferred compensation plan, annual percentage of incentive compensation deferred, maximum

+ References

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- Definition

Deferred compensation plan, annual percentage of incentive compensation deferred, minimum

+ References

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- Definition

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+ References

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- Definition

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- Definition

Defined contribution plan, employer matching annual contribution, percentage of eligible compensation, maximum

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- Definition

Defined contribution plan, employer matching annual contribution, percentage of eligible compensation, minimum

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- Definition

Employee benefit plans.

+ References

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- Definition

Amount of commitment made to pay deferred cash remuneration.

+ References

No definition available.

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

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- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

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- Definition

The increase (decrease) during the reporting period in the obligation created by employee agreements whereby earned compensation will be paid in the future.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
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- Definition

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