Stock Option Plans - Additional information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Stock Option Plans [Line Items]
Total intrinsic value of options exercised	$ 60	$ 162
Option
Stock Option Plans [Line Items]
Total unrecognized compensation cost related to nonvested options	$ 194
Weighted average period, years	4 years
Black-Scholes Option Pricing Model
Stock Option Plans [Line Items]
Weighted average fair value per option for all options (in dollars per share)	$ 54.96	$ 98.27
Long Term Incentive Plan
Stock Option Plans [Line Items]
Shares available for grant (in shares)	1.5
Long Term Incentive Plan \| Option
Stock Option Plans [Line Items]
Shares available for grant (in shares)	8.2
Vesting period, years	3 years
Maximum period for the exercise of stock options	7 years
Long Term Incentive Plan \| Minimum
Stock Option Plans [Line Items]
Minimum age of employee with not subject to award forfeiture on condition compliance	62 years

Age Of Employee No Longer Subject To Award Forfeiture On Condition Compliance

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Period for options to expire from date of grant.

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Stock Option Plans [Line Items]

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Weighted Average Period

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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-Topic 718
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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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