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Stock-Based Compensation - Summary of Information Regarding Stock Options Outstanding and Exercisable (Detail)	12 Months Ended
	Mar. 31, 2024 $ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options | shares	1,190,109
Weighted- Average Remaining Contractual Life (Years)	7 years
Weighted-Average Exercise Price (usd per share) | $ / shares	$ 83.74
$57.60-$60.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options | shares	98,680
Weighted- Average Remaining Contractual Life (Years)	5 years
Weighted-Average Exercise Price (usd per share) | $ / shares	$ 57.73
$60.01-$70.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options | shares	26,118
Weighted- Average Remaining Contractual Life (Years)	10 months 24 days
Weighted-Average Exercise Price (usd per share) | $ / shares	$ 68.76
$70.01-$80.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options | shares	423,674
Weighted- Average Remaining Contractual Life (Years)	7 years 4 months 24 days
Weighted-Average Exercise Price (usd per share) | $ / shares	$ 75.50
$80.01-$90.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options | shares	219,580
Weighted- Average Remaining Contractual Life (Years)	5 years 3 months 18 days
Weighted-Average Exercise Price (usd per share) | $ / shares	$ 83.00
$90.01-$100.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options | shares	140,375
Weighted- Average Remaining Contractual Life (Years)	8 years 3 months 18 days
Weighted-Average Exercise Price (usd per share) | $ / shares	$ 93.16
$100.01-$104.18
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Options | shares	281,682
Weighted- Average Remaining Contractual Life (Years)	8 years 3 months 18 days
Weighted-Average Exercise Price (usd per share) | $ / shares	$ 102.51

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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.

+ References

No definition available.

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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

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

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- Definition

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

+ References

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

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Paragraph 2
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-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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