Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended		48 Months Ended
	Mar. 31, 2025 USD ($) segments	Mar. 31, 2024 USD ($)	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
Increase (decrease) in cost of goods and income tax payable | $	$ (184,592)	$ (136,360)
Number of operating segments	4
Number of reportable segments	4
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
Market condition-based Share Units (TSR)
Summary Of Significant Accounting Policies [Line Items]
Vesting period, in years			3 years
Total shareholder return, return from average grant price, percentage			25.00%
Minimum
Summary Of Significant Accounting Policies [Line Items]
Percentage of investment ownership, consolidated	50.00%
Estimated useful lives of finite-lived assets	3 years
Minimum | Investments In Affiliates
Summary Of Significant Accounting Policies [Line Items]
Percentage of investment ownership, equity method	20.00%
Minimum | Market condition-based Share Units (TSR)
Summary Of Significant Accounting Policies [Line Items]
Total shareholder return, number of awards granted, percentage			0.00%
Minimum | Energy Systems 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 | Specialty Transportation 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, cost method	20.00%
Estimated useful lives of finite-lived assets	20 years
Maximum | Investments In Affiliates
Summary Of Significant Accounting Policies [Line Items]
Percentage of investment ownership, equity method	50.00%
Maximum | Market condition-based Share Units (TSR)
Summary Of Significant Accounting Policies [Line Items]
Total shareholder return, number of awards granted, percentage			200.00%
Maximum | Energy Systems 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	5 years
Maximum | Specialty Transportation Batteries
Summary Of Significant Accounting Policies [Line Items]
Product warranty for a period	4 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