Environmental Matters (Details) - USD ($) $ in Millions	Sep. 30, 2026	Jun. 30, 2026
Environmental Remediation Obligations [Abstract]
Reserves for environmental costs	$ 12.3	$ 12.3
Accrued environmental loss contingencies, current	$ 2.8	$ 2.7

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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