FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Mar. 31, 2025
Assets:
Money-market funds	$ 1,699,688	$ 1,485,555
Derivative Contract asset, current	469	2,238
Derivative Contract asset, noncurrent	111
Non-qualified deferred compensation asset	23,524	16,967
Total assets measured at fair value	1,723,792	1,504,760
Liabilities:
Derivate Contracts liability, current	(5,558)	(64)
Non-qualified deferred compensation liability	(2,082)	(2,345)
Derivate Contracts liability, noncurrent	(235)
Non-qualified deferred compensation liability	(30,308)	(22,793)
Total liabilities measured at fair value	(38,183)	(25,202)
Designated as Hedging Instrument
Assets:
Derivative Contract asset, current	432	2,163
Derivative Contract asset, noncurrent	111
Liabilities:
Derivate Contracts liability, current	(5,558)	(64)
Derivate Contracts liability, noncurrent	(235)
Not Designated as Hedging Instrument
Assets:
Derivative Contract asset, current	37	75
Derivative Contract asset, noncurrent	0
Liabilities:
Derivate Contracts liability, current	0	0
Derivate Contracts liability, noncurrent	0
Level 1
Assets:
Money-market funds	1,699,688	1,485,555
Non-qualified deferred compensation asset	23,524	16,967
Total assets measured at fair value	1,723,212	1,502,522
Liabilities:
Non-qualified deferred compensation liability	(2,082)	(2,345)
Non-qualified deferred compensation liability	(30,308)	(22,793)
Total liabilities measured at fair value	(32,390)	(25,138)
Level 1 | Designated as Hedging Instrument
Assets:
Derivative Contract asset, current	0	0
Derivative Contract asset, noncurrent	0
Liabilities:
Derivate Contracts liability, current	0	0
Derivate Contracts liability, noncurrent	0
Level 1 | Not Designated as Hedging Instrument
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	580	2,238
Liabilities:
Non-qualified deferred compensation liability	0	0
Non-qualified deferred compensation liability	0	0
Total liabilities measured at fair value	(5,793)	(64)
Level 2 | Designated as Hedging Instrument
Assets:
Derivative Contract asset, current	432	2,163
Derivative Contract asset, noncurrent	111
Liabilities:
Derivate Contracts liability, current	(5,558)	(64)
Derivate Contracts liability, noncurrent	(235)
Level 2 | Not Designated as Hedging Instrument
Assets:
Derivative Contract asset, current	37	75
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 as Hedging Instrument
Assets:
Derivative Contract asset, current	0	0
Derivative Contract asset, noncurrent	0
Liabilities:
Derivate Contracts liability, current	0	0
Derivate Contracts liability, noncurrent	0
Level 3 | Not Designated as Hedging Instrument
Assets:
Derivative Contract asset, current	$ 0	$ 0