Asbestos - Narrative (Details) $ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2026
AUD ($)
|
Mar. 31, 2026
USD ($)
|
|
| Schedule Of Asbestos Claims [Line Items] | ||||
| Secured standby loan facility maximum borrowing capacity | $ 320.0 | $ 219.0 | ||
| Secured standby loan facility amounts outstanding | $ 0.0 | $ 0.0 | ||
| Central Estimate – Discounted and Inflated | ||||
| Schedule Of Asbestos Claims [Line Items] | ||||
| Discounted actuarial estimate, potential period shift | 2 years | |||
| Discounted actuarial estimate, potential percent increase | 19.00% | 19.00% | ||