Supplemental Financial Information (Other Income) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Supplemental Financial Information [Abstract]
Net foreign currency exchange gains (losses)	$ (1.8)	$ (3.5)	$ (16.1)	$ 4.4
Net periodic pension and retiree medical income (loss)	(0.2)	0.6	(0.7)	2.0
Gain (Loss) on Sale of Properties	89.5	(0.2)	117.4	(0.3)
Other income (expenses)	0.2	0.3	0.4	0.4
Other, net	$ 87.7	$ (2.8)	$ 100.2	$ 6.5

Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction.

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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits.

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Amount of expense related to nonoperating activities, classified as other.

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Amount of income (expense) related to nonoperating activities, classified as other.

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Supplemental Financial Information [Abstract]

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