Business Segment Information - Information by Geographical Location (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Mar. 31, 2026 |
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| Segment Reporting [Line Items] | ||
| Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization | $ 2,171,700 | $ 2,161,200 |
| IRELAND | ||
| Segment Reporting [Line Items] | ||
| Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization | 87,600 | 88,100 |
| UNITED STATES | ||
| Segment Reporting [Line Items] | ||
| Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization | 1,110,900 | 1,094,400 |
| Other locations | ||
| Segment Reporting [Line Items] | ||
| Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization | $ 973,200 | $ 978,700 |
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- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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