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Other Assets - Additional Information (Detail) - USD ($) $ in Thousands, shares in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Goodwill [Line Items]
Investment in Shockwave Medical	$ 61,535	$ 38,655
Shockwave Medical
Goodwill [Line Items]
Investment in affiliate				$ 25,000
Investment in Shockwave Medical	$ 61,500	$ 38,700
Aggregate shares sold		1.4
Cash proceeds from sale of stock		$ 67,900
Realized gain from sale of stock		$ 47,300
Investments In And Advances To Affiliates Balance Shares	0.3	0.3
Shockwave Medical \| Other Income (Expense)
Goodwill [Line Items]
Gain (loss) recorded in other income (expense)	$ 22,900	$ 50,800	$ 500