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Restructuring, Exit and Other Charges - Additional Information (Details) $ in Thousands |  | 3 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | --- | ---
Nov. 10, 2020 USD ($) Employee | Mar. 31, 2021 USD ($) | Jan. 03, 2021 USD ($) | Oct. 04, 2020 USD ($) | Jul. 05, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2021 USD ($) Employee | Mar. 31, 2020 USD ($) Employee | Mar. 31, 2019 USD ($) | Mar. 31, 2021 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected cost remaining |  | $ 7,424 |  |  |  |  |  |  |  | $ 7,424 |  |  | $ 7,424
Expected reduction in number of employees | Employee |  |  |  |  |  |  |  |  |  |  | 160 |  |
Write-off of assets relating to restructuring and other exit charges |  |  |  |  |  |  |  |  |  | 10,231 | $ 10,986 | $ 26,308 |
Restructuring and other exit charges |  | 20,672 | $ 15,196 | $ 3,119 | $ 1,387 | $ 2,695 | $ 9,417 | $ 6,282 | $ 2,372 | $ 40,374 | 20,766 | 34,709 |
Gain on sale of certain licenses and assets |  |  | 4,397 |  |  |  |  |  |  |  |  |  |
Restructuring Related to Sale of Geräte- und Akkumulatorenwerk Zwickau GmbH |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  |  | 4,930 |  |
Restructuring Charges Relating to Dissolving Joint Venture in Tunisia |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  |  | 957 |  |
Restructuring Related to Improving Profitability in India | Asia |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Write-off of assets relating to restructuring and other exit charges |  |  |  |  |  |  |  |  |  |  | 660 |  |
Energy Systems |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected reduction in number of employees | Employee |  |  |  |  |  |  |  |  |  | 47 |  |  |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  | $ 3,187 | 7,284 | 10,593 |
Motive Power |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected reduction in number of employees | Employee |  |  |  |  |  |  |  |  |  | 32 |  |  |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  | $ 36,798 | 2,021 | 5,751 |
Specialty |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected remaining restructuring charges |  | 169 |  |  |  |  |  |  |  | 169 |  |  | 169
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  | 389 | 6,020 | 18,365 |
Cash Charges | Energy Systems |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected remaining restructuring charges |  | 3,187 |  |  |  |  |  |  |  | 3,187 |  |  | 3,187
Cash Charges | Motive Power |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected remaining restructuring charges |  | 4,012 |  |  |  |  |  |  |  | 4,012 |  |  | 4,012
Non Cash Charges | Restructuring Related to Improving Profitability in India | Asia | Cost of Sales |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  |  | 526 |  |
Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit charges |  |  |  |  |  |  |  |  |  | 33,006 | 9,780 | 24,086 |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  | 40,374 | 20,766 | 34,709 |
Employee Severance | Energy Systems |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit charges |  |  |  |  |  |  |  |  |  | 0 | 526 | 5,477 |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  | 3,187 | 7,334 | 10,592 |
Employee Severance | Motive Power |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit charges |  |  |  |  |  |  |  |  |  | 32,786 | 5,541 | 957 |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  | 36,798 | 7,401 | 5,752 |
Employee Severance | Specialty |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit charges |  |  |  |  |  |  |  |  |  | 220 | 3,713 | 17,652 |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  | 389 | 6,031 | 18,365 |
Closure of Facility in Hagen, Germany |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected remaining restructuring charges | $ 60,000 |  |  |  |  |  |  |  |  |  |  |  |
Expected reduction in number of employees | Employee | 200 |  |  |  |  |  |  |  |  |  |  |  |
Closure of Facility in Hagen, Germany | Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected remaining restructuring charges | $ 40,000 |  |  |  |  |  |  |  |  |  |  |  |
Closure of Facility in Hagen, Germany | Non Cash Charges |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected remaining restructuring charges | $ 20,000 | 7,946 |  |  |  |  |  |  |  | 7,946 |  |  | 7,946
Closure of Facility in Hagen, Germany | Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Write-off of assets relating to restructuring and other exit charges |  |  |  |  |  |  |  |  |  | 23,331 |  |  |
Closure of Facility in Vijayawada, India | Employee Severance |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exit charges |  |  |  |  |  |  |  |  |  | 1,509 |  |  |
Closure Of Facility In Targovishte, Bulgaria |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Expected cost remaining |  |  |  |  |  |  |  |  |  |  |  | 26,000 |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  | 220 | 5,123 | $ 20,242 |
Strategy to Exit Manufacture of Batteries for Diesel-Electric Submarines |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of assets |  |  |  |  |  |  |  |  |  |  | 2,031 |  |
Gain on sale of certain licenses and assets |  |  |  |  |  |  |  |  |  |  | 892 |  |
Fixed Asset Write-Off, Kentucky and Tennessee Plants |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  |  | 5,441 |  |
Richmond Kentucky Battery Formation Area Fire |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  |  |  |  | 5 |  |  |  |  |  |  | 46,117
Gain on sale of certain licenses and assets |  |  |  |  |  |  |  |  |  | 4,397 |  |  |
Prepaid insurance |  | $ 21,617 |  |  |  | $ 12,000 |  |  |  | 21,617 | 12,000 |  | $ 21,617
Restructuring charges, cash charges related to employee severance and other charges |  |  |  |  |  |  |  |  |  | 7,500 | 5,000 |  |
Richmond Kentucky Battery Formation Area Fire | Write-Offs for Damages, Cleanup, Asset Replacement, and Other |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  |  | $ 17,037 |  |
Richmond Kentucky Battery Formation Area Fire | Cleanup |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and other exit charges |  |  |  |  |  |  |  |  |  | 16,580 |  |  |
Richmond Kentucky Battery Formation Area Fire | Business Interruption Claim |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges, cash charges related to employee severance and other charges |  |  | $ 2,344 | $ 1,456 | $ 3,700 |  |  |  |  | $ 12,500 |  |  |

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