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Derivative Financial Instruments - (Derivatives Effect on Statements of Income) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	$ 13,134	$ 332	$ (8,737)
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	9,742	(7,903)	(1,151)
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	1,479
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	1,181
Derivatives Not Designated as Hedging Instruments
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(157)	430	(178)
Lead forward contracts | Designated as Hedging Instrument | Cost of goods sold
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	12,193	202	(8,683)
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	8,974	(7,411)	(1,690)
Foreign currency forward contracts | Designated as Hedging Instrument | Cost of goods sold
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	941	130	(54)
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	768	(492)	539
Foreign currency forward contracts | Derivatives Not Designated as Hedging Instruments | Other (income) expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	(157)	$ 430	$ (178)
Cross currency fixed interest rate swaps | Designated as Hedging Instrument | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Pretax Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	1,479
Pretax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	$ 1,181

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 20
-Section 45
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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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