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Share-Based Employee Compensation - Weighted-Average Assumptions Used to Value Option Awards (Detail)	6 Months Ended
	Sep. 30, 2024 $ / shares
Fiscal 2025 Employee Performance Stock Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Measurement Period / Expected Life	2 years 10 months 6 days
Risk-Free Interest Rate	4.70%
Dividend Yield	0.40%
Expected Volatility	31.40%
Estimated Fair Value of Market-Based PSAs at Grant Date	$ 238.27
Fiscal 2025 Board of Directors Stock Option Award [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Measurement Period / Expected Life	6 years
Risk-Free Interest Rate	4.20%
Dividend Yield	0.50%
Expected Volatility	38.80%

X

- Definition

Share based compensation arrangement by share based payment award fair value assumptions estimated fair value of awards granted.

+ References

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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