Property, Plant, and Equipment (Schedule of Property, Plant and Equipment. Depreciation Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Depreciation	$ 12.6	$ 10.7
Capitalized Computer Software, Amortization	$ 0.9	$ 1.1