Income Taxes - Deductions Related to Valuation Allowance (Details) - Valuation Allowance of Deferred Tax Assets - USD ($) $ in Millions |
12 Months Ended | ||
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Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at Beginning of Year | $ 287.4 | $ 270.8 | $ 299.4 |
| Additions Charged to Costs and Expenses | 36.5 | 22.2 | 6.5 |
| Deductions | (32.3) | (5.6) | (35.1) |
| Balance at End of Year | $ 291.6 | $ 287.4 | $ 270.8 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of valuation and qualifying accounts and reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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