Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands		12 Months Ended
	Apr. 01, 2019 USD ($)	Mar. 31, 2019 segment	Mar. 31, 2020
Summary Of Significant Accounting Policies [Line Items]
Cash and cash equivalents include all highly liquid investments with an original maturity, when purchased, in months		3 months
Number of geographical regions | segment		3
Restricted Stock and Restricted Stock Units
Summary Of Significant Accounting Policies [Line Items]
Percentage of restricted stock units granted, vested per year		25.00%
Vesting period, in years		4 years
Minimum
Summary Of Significant Accounting Policies [Line Items]
Percentage of investment ownership, consolidated			50.00%
Percentage of investment ownership, equity method			20.00%
Estimated useful lives of finite-lived assets		3 years
Minimum | Reserve Power Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period		1 year
Minimum | Motive Power Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period		1 year
Minimum | Building and Improvements
Summary Of Significant Accounting Policies [Line Items]
Property, plant, and equipment, useful life		10 years
Minimum | Machinery and equipment
Summary Of Significant Accounting Policies [Line Items]
Property, plant, and equipment, useful life		3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Percentage of investment ownership, equity method			50.00%
Percentage of investment ownership, cost method			20.00%
Estimated useful lives of finite-lived assets		20 years
Maximum | Reserve Power Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period		20 years
Maximum | Motive Power Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period		7 years
Maximum | Building and Improvements
Summary Of Significant Accounting Policies [Line Items]
Property, plant, and equipment, useful life		33 years
Maximum | Machinery and equipment
Summary Of Significant Accounting Policies [Line Items]
Property, plant, and equipment, useful life		15 years
Accounting Standards Update 2016-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Right-of-use asset	$ 84,878
Lease liability	87,248
Accounting Standards Update 2018-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Stranded tax effects not reclassified	$ 478