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Goodwill and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill by Business Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Goodwill [Roll Forward]
Balance at beginning of year	$ 705,593	$ 663,936
Measurement period adjustments		2,996
Foreign currency translation adjustment	(4,953)	38,661
Balance at end of year	700,640	705,593
Energy Systems
Goodwill [Roll Forward]
Balance at beginning of year	279,676	263,150
Measurement period adjustments		1,348
Foreign currency translation adjustment	(215)	15,178
Balance at end of year	279,461	279,676
Motive Power
Goodwill [Roll Forward]
Balance at beginning of year	327,055	308,497
Measurement period adjustments		0
Foreign currency translation adjustment	(3,752)	18,558
Balance at end of year	323,303	327,055
Specialty
Goodwill [Roll Forward]
Balance at beginning of year	98,862	92,289
Measurement period adjustments		1,648
Foreign currency translation adjustment	(986)	4,925
Balance at end of year	$ 97,876	$ 98,862

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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