CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parentheticals) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Unrealized hedging gains (losses) and other, tax	$ 3.6	$ (7.7)	$ 5.5	$ (11.8)
Reclassification of deferred hedging (gains) losses and other, included in net income, tax	0.8	6.6	0.7	8.8
Total derivative instruments, tax	4.4	(1.1)	6.2	(3.0)
Unrealized actuarial gains (losses) and prior service (costs) credits, tax	0.0	0.0	0.0	0.0
Reclassification of net actuarial and other (gain) loss, amortization of prior service costs and settlement charges, included in net income, tax	0.6	0.7	1.3	1.5
Other comprehensive (income) loss, defined benefit plan, after reclassification adjustment, tax	$ 0.6	$ 0.7	$ 1.3	$ 1.5

Amount, after reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, before reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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