v3.25.1

Accumulated Other Comprehensive Loss (Schedule of Reclassifications out of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications to earnings			$ 0.3	$ 1.0
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
OCI Cash flow hedges reclass to earnings, before tax	$ 1.2	$ 0.8
OCI Cash flow hedge, reclassification to earnings, tax	0.4	0.3	0.5	0.8
Other comprehensive income, reclassification to earnings, cash flow hedges, after tax	0.8	0.5	1.2	1.6
Amortization of defined benefit pension and postretirement items, actuarial losses, before tax	(0.6)	(0.3)	(1.2)	(0.7)
Amortization of defined benefit pension and postretirement items, tax	(0.2)	0.0	(0.3)	(0.1)
Amortization of defined benefit pension and postretirement items, after tax	(0.4)	(0.3)	(0.9)	(0.6)
Reclassifications to earnings	$ 0.4	$ 0.2	$ 0.3	$ 1.0

Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, after tax, of reclassification adjustment from accumulated other comprehensive (income) loss for net periodic benefit cost (credit) of defined benefit plan.

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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