Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Mar. 31, 2026
Assets:
Money-market funds	$ 667,512	$ 1,462,683
Derivative Contract asset, current	9,493	7,686
Non-qualified deferred compensation asset	27,263	22,845
Total assets measured at fair value	704,268	1,493,214
Liabilities:
Non-qualified deferred compensation liability	(2,748)	(2,407)
Non-qualified deferred compensation liability	(35,483)	(29,291)
Total liabilities measured at fair value	(38,231)	(31,698)
Designated Derivative Contracts
Assets:
Derivative Contract asset, current	8,505	7,316
Non-Designated Derivative Contracts
Assets:
Derivative Contract asset, current	988	370
Level 1
Assets:
Money-market funds	667,512	1,462,683
Non-qualified deferred compensation asset	27,263	22,845
Total assets measured at fair value	694,775	1,485,528
Liabilities:
Non-qualified deferred compensation liability	(2,748)	(2,407)
Non-qualified deferred compensation liability	(35,483)	(29,291)
Total liabilities measured at fair value	(38,231)	(31,698)
Level 1 \| Designated Derivative Contracts
Assets:
Derivative Contract asset, current	0	0
Level 1 \| Non-Designated Derivative Contracts
Assets:
Derivative Contract asset, current	0	0
Level 2
Assets:
Money-market funds	0	0
Non-qualified deferred compensation asset	0	0
Total assets measured at fair value	9,493	7,686
Liabilities:
Non-qualified deferred compensation liability	0	0
Non-qualified deferred compensation liability	0	0
Total liabilities measured at fair value	0	0
Level 2 \| Designated Derivative Contracts
Assets:
Derivative Contract asset, current	8,505	7,316
Level 2 \| Non-Designated Derivative Contracts
Assets:
Derivative Contract asset, current	988	370
Level 3
Assets:
Money-market funds	0	0
Non-qualified deferred compensation asset	0	0
Total assets measured at fair value	0	0
Liabilities:
Non-qualified deferred compensation liability	0	0
Non-qualified deferred compensation liability	0	0
Total liabilities measured at fair value	0	0
Level 3 \| Designated Derivative Contracts
Assets:
Derivative Contract asset, current	0	0
Level 3 \| Non-Designated Derivative Contracts
Assets:
Derivative Contract asset, current	$ 0	$ 0

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Fair value portion of asset recognized for present right to economic benefit.

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

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Fair value of financial and nonfinancial obligations.

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