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Stock Options Outstanding (Detail)	3 Months Ended
	Jun. 30, 2023 $ / shares shares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Options Outstanding, Number of Shares Outstanding | shares	322,444
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	6 years 3 months 25 days
Options Outstanding, Weighted-Average Exercise Price	$ 91.28
Options Exercisable , Number of Shares Outstanding | shares	228,808
Options Exercisable, Weighted-Average Exercise Price	$ 88.74
$59.32 - $81.56 [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	59.32
Range of Exercise Prices, Upper Range	$ 81.28
Options Outstanding, Number of Shares Outstanding | shares	118,049
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	6 years 3 months 10 days
Options Outstanding, Weighted-Average Exercise Price	$ 62.64
Options Exercisable , Number of Shares Outstanding | shares	75,645
Options Exercisable, Weighted-Average Exercise Price	$ 63.83
$87.37 - $93.03 [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	87.37
Range of Exercise Prices, Upper Range	$ 106.24
Options Outstanding, Number of Shares Outstanding | shares	134,018
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	5 years 14 days
Options Outstanding, Weighted-Average Exercise Price	$ 95.87
Options Exercisable , Number of Shares Outstanding | shares	130,302
Options Exercisable, Weighted-Average Exercise Price	$ 95.83
$99.37 - $143.09 [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	118.27
Range of Exercise Prices, Upper Range	$ 166.75
Options Outstanding, Number of Shares Outstanding | shares	70,377
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	8 years 9 months 25 days
Options Outstanding, Weighted-Average Exercise Price	$ 130.59
Options Exercisable , Number of Shares Outstanding | shares	22,861
Options Exercisable, Weighted-Average Exercise Price	$ 130.82

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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

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-Subparagraph (c)(1)(i)-(ii)
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-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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-Topic 718
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-Section 50
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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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