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Income Taxes, Unrecognized Tax Benefits (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Reconciliation of Unrecognized Tax Benefits [Roll Forward] |  |
Beginning balance | $ 9.7 | $ 9.3
Gross increases - tax positions in prior period | 0.5 | 0.2
Gross decreases - tax positions in prior period | 0.0 | (0.1)
Gross increases - tax positions in current period | 1.3 | 0.9
Lapse of statute of limitations | (2.3) | (0.6)
Ending balance | 9.2 | $ 9.7
Unrecognized tax benefits that would impact effective tax rate | $ 7.3 |

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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. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10B -Publisher FASB -URI https://asc.fasb.org//1943274/2147482525/740-10-45-10B + Details
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