Income Taxes - Reconciled Tax at Statutory Rates (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
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| Income Tax Disclosure [Abstract] | |||
| Income tax expense computed at the statutory tax rates | $ 117.9 | $ 135.1 | $ 135.1 |
| US state income taxes, net of the federal benefit | 15.2 | 14.0 | 10.6 |
| Asbestos - effect of foreign exchange | 0.0 | (3.2) | (13.3) |
| Expenses not deductible | 14.2 | 3.6 | 3.3 |
| Stock and executive compensation | 2.4 | 7.6 | 1.9 |
| Foreign taxes on domestic income | 50.8 | 60.2 | 61.2 |
| Taxes on foreign income | 17.2 | 17.7 | 12.0 |
| Net deferred tax remeasurement | (1.1) | 7.3 | 2.3 |
| Other items | 4.8 | 2.3 | (1.6) |
| Total income tax expense | $ 221.4 | $ 244.6 | $ 211.5 |
| Effective tax rate (as percent) | 34.30% | 32.40% | 29.20% |
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- Definition Effective Income Tax Rate Reconciliation, Net Deferred Tax Remeasurement No definition available.
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- Definition Income tax reconciliation foreign taxes on domestic income No definition available.
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- Definition Income tax reconciliation nondeductible expense effect of foreign exchange on asbestos. No definition available.
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement. Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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