Benefit Plans Benefit Plans (Rollforward of Level 3 assets) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Defined Benefit Plan Disclosure [Line Items] | |||
| Other Investments | $ 7.8 | $ 6.9 | $ 6.1 |
| Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Period Increase (Decrease) | 0.1 | ||
| Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) | 0.7 | 0.1 | |
| Fair Value, Inputs, Level 3 [Member] | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Assets Transferred into (out of) Level 3 | $ 0.2 | $ 0.6 | |
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- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan. No definition available.
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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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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan, for assets transferred into (out of) Level 3 of fair value hierarchy. Includes, but is not limited to, transfer due to change in observability of significant inputs. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investments classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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