Asbestos - Schedule Of Asbestos Adjustments (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Asbestos [Abstract] | |||
| Change in actuarial estimate - asbestos liability | $ 46.7 | $ 139.6 | $ 148.1 |
| Change in actuarial estimate - insurance receivable | 3.0 | (2.1) | (3.1) |
| Change in estimate - AICF claims-handling costs | 0.8 | (0.5) | 8.5 |
| Subtotal - Change in estimates | 50.5 | 137.0 | 153.5 |
| Effect of foreign exchange on Asbestos net liabilities | 0.0 | 0.0 | (9.7) |
| Loss on foreign currency forward contracts | 0.0 | 0.0 | 7.8 |
| Other | 1.3 | 0.6 | 0.1 |
| Asbestos adjustments | $ 51.8 | $ 137.6 | $ 151.7 |