Share-Based Employee Compensation - Stock Option Activity (Detail)	3 Months Ended
Jun. 30, 2024 $ / shares shares
Share-Based Payment Arrangement [Abstract]
Number of Shares, Outstanding Options at March 31, 2024	252,364
Number of Shares, Granted	3,926
Number of Shares, Exercised	(424)
Number of Shares, Cancelled	0
Number of Shares, Outstanding Options at June 30, 2024	255,866
Number of Shares, Options Exercisable at June 30, 2024	217,398
Weighted Average Fair Value of Options Granted During the Year \| $ / shares	$ 101.99
Weighted-Average Exercise Price, Outstanding Options at March 31, 2024 \| $ / shares	91.28
Weighted-Average Exercise Price, Granted \| $ / shares	238.27
Weighted-Average Exercise Price, Exercised \| $ / shares	132.7
Weighted-Average Exercise Price, Outstanding Options at June 30, 2024 \| $ / shares	$ 93.23

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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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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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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