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Estimated Fair Value of Restricted Stock Units on Dates of Each Grant Using Binomial Option Pricing Model (Detail) - Restricted Stock Units (RSUs) [Member] - Employee Stock Incentive Master Scheme Two Thousand And Twenty Two [Member]	12 Months Ended
	Mar. 31, 2023
Share Based Compensation By Share Based Award Restricted Stock Units Valuation Assumptions [Line Items]
Expected volatility, lower range	23.68%
Expected volatility, upper range	35.35%
Risk-free interest rate, lower range	7.07%
Risk-free interest rate, upper range	7.57%
Maximum [Member]
Share Based Compensation By Share Based Award Restricted Stock Units Valuation Assumptions [Line Items]
Dividend yield	0.75%
Expected term (in years)	4 years
Minimum [Member]
Share Based Compensation By Share Based Award Restricted Stock Units Valuation Assumptions [Line Items]
Dividend yield	0.47%
Expected term (in years)	1 year

X

- Definition

Share Based Compensation By Share Based Award Restricted Stock Units Valuation Assumptions

+ 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

The estimated measure of the maximum 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.

+ References

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- Definition

The estimated measure of the minimum 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.

+ References

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- Definition

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

+ References

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- Definition

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

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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