Organization and Significant Accounting Policies - Schedule of Reconciliation of Cash and Cash Equivalents, Restricted Cash and Restricted Cash - Asbestos (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Mar. 31, 2026 |
Jun. 30, 2025 |
Mar. 31, 2025 |
|---|---|---|---|---|
| Accounting Policies [Abstract] | ||||
| Cash and cash equivalents | $ 289.9 | $ 269.2 | ||
| Restricted cash and cash equivalents | 5.0 | 5.0 | ||
| Restricted cash and cash equivalents — Asbestos | 27.1 | 70.2 | ||
| Total | $ 322.0 | $ 344.4 | $ 2,111.8 | $ 605.6 |
| X | ||||||||||
- Definition The carrying amounts of cash and cash equivalent items which are restricted to the settlement of asbestos claims and payments of the operating costs of the Asbestos Injuries Compensation Fund. Amounts are classified as current as they are highly liquid. No definition available.
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| X | ||||||||||
- Definition Restricted cash and cash equivalents excluding amounts for asbestos claims. No definition available.
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| X | ||||||||||
- References No definition available.
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- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of cash and cash equivalent, and cash and cash equivalent restricted to withdrawal or usage; attributable to continuing operation. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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