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Business Segments (Tables) | 12 Months Ended
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Mar. 31, 2025
Segment Reporting [Abstract] |
Summary Of Financial Information Related To The Company's Business Segments | Summarized financial information related to the Company’s reportable segments at March 31, 2025, 2024 and 2023 and for each of the fiscal years then ended is shown below.
| Twelve months ended
| March 31, 2025
| Energy Systems |  | Motive Power |  | Specialty |  |  |  | Total
Net Sales by segment to unaffiliated customers | $ | 1,531,169 |  |  | $ | 1,484,117 |  |  | $ | 593,488 |  |  |  |  | $ | 3,608,774 |
Net sales from corporate and other |  |  |  |  |  |  |  |  | 8,805 |
Total Net Sales |  |  |  |  |  |  |  |  | $ | 3,617,579 |
Less: |  |  |  |  |  |  |  |  |
Other segment items(4) | $ | 1,427,963 |  |  | $ | 1,251,362 |  |  | $ | 556,534 |  |  |  |  | $ | 3,244,664 |
Segment income | $ | 103,206 |  |  | $ | 232,755 |  |  | $ | 36,954 |  |  |  |  | $ | 372,915 |
Less: |  |  |  |  |  |  |  |  |
Inventory adjustment relating to exit activities | 274 |  |  | — |  |  | 3,335 |  |  |  |  | 3,609 |
Restructuring and other exit charges | 5,994 |  |  | 5,719 |  |  | 2,715 |  |  |  |  | 14,428 |
Loss on assets held for sale | — |  |  | 4,634 |  |  | — |  |  |  |  | 4,634 |
Amortization of intangible assets | 23,620 |  |  | 685 |  |  | 7,500 |  |  |  |  | 31,805 |
Acquisition expense | 11 |  |  | 11 |  |  | 2,476 |  |  |  |  | 2,498 |
Integration costs | (96) |  |  | — |  |  | 4,086 |  |  |  |  | 3,990 |
Other | 673 |  |  | 1,574 |  |  | 110 |  |  |  |  | 2,357 |
Total operating earnings by segment | $ | 72,730 |  |  | $ | 220,132 |  |  | $ | 16,732 |  |  |  |  | $ | 309,594 |
Corporate and other(3) |  |  |  |  |  |  |  |  | $ | 155,092 |
Operating earnings(2) |  |  |  |  |  |  |  |  | $ | 464,686 |
(1)Reportable segments do not record inter-segment revenues and accordingly there are none to report. (2)The Company does not allocate interest expense or other (income) expense, net, to the reportable segments. (3) Corporate and other includes amounts managed on a company-wide basis and not directly allocated to any reportable segments, primarily relating to IRA production tax credits. Also, included are start-up costs for exploration of a new lithium plant as well as start-up operating expenses from the New Ventures operating segment. (4) Primarily includes cost of sales and operating expenses
| Twelve months ended
| March 31, 2024
| Energy Systems |  | Motive Power |  | Specialty |  | Total
Net Sales by segment to unaffiliated customers | $ | 1,590,023 |  |  | $ | 1,456,181 |  |  | $ | 535,667 |  |  | $ | 3,581,871 |
Net sales from corporate and other |  |  |  |  |  |  | — |
Total Net Sales |  |  |  |  |  |  | $ | 3,581,871 |
Less: |  |  |  |  |  |  |
Other segment items(4) | $ | 1,503,068 |  |  | $ | 1,241,531 |  |  | $ | 504,301 |  |  | $ | 3,248,900 |
Segment income | $ | 86,955 |  |  | $ | 214,650 |  |  | $ | 31,366 |  |  | $ | 332,971 |
Less: |  |  |  |  |  |  |
Inventory adjustment relating to exit activities | 17,075 |  |  | — |  |  | 3,098 |  |  | 20,173 |
Restructuring and other exit charges | 8,840 |  |  | 11,697 |  |  | 7,566 |  |  | 28,103 |
Impairment of indefinite-lived intangibles | 13,619 |  |  | — |  |  | — |  |  | 13,619 |
Legal proceedings charge, net | 3,705 |  |  | — |  |  | — |  |  | 3,705 |
Amortization of intangible assets | 24,503 |  |  | 683 |  |  | 2,808 |  |  | 27,994 |
Acquisition expense | 16 |  |  | 185 |  |  | — |  |  | 201 |
Integration costs | 420 |  |  | — |  |  | — |  |  | 420 |
Other | 3,304 |  |  | 847 |  |  | 295 |  |  | 4,446 |
Total operating earnings by segment | $ | 15,473 |  |  | $ | 201,238 |  |  | $ | 17,599 |  |  | $ | 234,310 |
Corporate and other(3) |  |  |  |  |  |  | $ | 117,260 |
Operating earnings(2) |  |  |  |  |  |  | $ | 351,570 |
(1)Reportable segments do not record inter-segment revenues and accordingly there are none to report. (2)The Company does not allocate interest expense or other (income) expense, net, to the reportable segments. (3) Corporate and other includes amounts managed on a company-wide basis and not directly allocated to any reportable segments, primarily relating to IRA production tax credits. Also, included are start-up costs for exploration of a new lithium plant as well as start-up operating expenses from the New Ventures operating segment. (4) Primarily includes cost of sales and operating expenses
| Twelve months ended
| March 31, 2023
| Energy Systems |  | Motive Power |  | Specialty |  | Total
Net Sales by segment to unaffiliated customers | $ | 1,738,195 |  |  | $ | 1,451,244 |  |  | $ | 519,140 |  |  | $ | 3,708,579 |
Net sales from corporate and other |  |  |  |  |  |  | — |
Total Net Sales |  |  |  |  |  |  | $ | 3,708,579 |
Less: |  |  |  |  |  |  |
Other segment items(4) | $ | 1,647,795 |  |  | $ | 1,271,272 |  |  | $ | 478,653 |  |  | $ | 3,397,720 |
Segment income | $ | 90,400 |  |  | $ | 179,972 |  |  | $ | 40,487 |  |  | $ | 310,859 |
Less: |  |  |  |  |  |  |
Inventory adjustment relating to exit activities | (211) |  |  | 892 |  |  | — |  |  | 681 |
Restructuring and other exit charges | 1,441 |  |  | 12,864 |  |  | 2,134 |  |  | 16,439 |
Impairment of indefinite-lived intangibles | 100 |  |  | — |  |  | 380 |  |  | 480 |
Amortization of intangible assets | 27,383 |  |  | 441 |  |  | 2,923 |  |  | 30,747 |
Acquisition expense | 87 |  |  | 317 |  |  | — |  |  | 404 |
Integration costs | 138 |  |  | — |  |  | — |  |  | 138 |
Other | 487 |  |  | 310 |  |  | 95 |  |  | 892 |
Total operating earnings by segment | $ | 60,975 |  |  | $ | 165,148 |  |  | $ | 34,955 |  |  | $ | 261,078 |
Corporate and other(3) |  |  |  |  |  |  | $ | 17,283 |
Operating earnings(2) |  |  |  |  |  |  | $ | 278,361 |
(1)Reportable segments do not record inter-segment revenues and accordingly there are none to report. (2)The Company does not allocate interest expense or other (income) expense, net, to the reportable segments. (3) Corporate and other includes amounts managed on a company-wide basis and not directly allocated to any reportable segments, primarily relating to IRA production tax credits. Also, included are start-up costs for exploration of a new lithium plant as well as start-up operating expenses from the New Ventures operating segment. (4) Primarily includes cost of sales and operating expenses
|  | Fiscal year ended March 31,
|  | 2025 |  | 2024 |  | 2023
Capital Expenditures |  |  |  |  |  |
Energy Systems |  | $ | 39,167 |  |  | $ | 33,626 |  |  | $ | 37,249 |
Motive Power |  | 22,758 |  |  | 17,115 |  |  | 16,373 |
Specialty |  | 47,016 |  |  | 35,596 |  |  | 35,150 |
Other |  | 12,097 |  |  | 100 |  |  | — |
Total |  | $ | 121,038 |  |  | $ | 86,437 |  |  | $ | 88,772 |
Depreciation and Amortization |  |  |  |  |  |
Energy Systems |  | $ | 50,443 |  |  | $ | 49,469 |  |  | $ | 52,034 |
Motive Power |  | 23,695 |  |  | 23,690 |  |  | 22,404 |
Specialty |  | 26,706 |  |  | 18,762 |  |  | 16,715 |
Other |  | 32 |  |  | 100 |  |  | — |
Total |  | $ | 100,876 |  |  | $ | 92,021 |  |  | $ | 91,153 |
The Company's property, plant and equipment by reportable segments as of March 31, 2025 and 2024 are as follows:
|  | March 31, 2025 |  | March 31, 2024
Property, plant and equipment, net |  |  |  |
Energy Systems |  | $ | 198,841 |  |  | $ | 189,519 |
Motive Power |  | 144,076 |  |  | 145,395 |
Specialty |  | 236,861 |  |  | 197,368 |
Other |  | 12,655 |  |  | 168 |
Total |  | $ | 592,433 |  |  | $ | 532,450 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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