Restructuring and Other Charges (Income) - Schedule of Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Restructuring Charges
Severance and Employee Benefits	$ 5.5	$ 5.4	$ 12.0	$ 9.2
Other Charges (Income)	(0.2)	5.1	23.1	11.8
Asset Disposal Charges (Income)	134.2	2.5	198.9	5.6
Total	139.5	13.0	234.0	26.6
Project Focus
Restructuring Charges
Severance and Employee Benefits	0.2	5.4	0.5	9.6
Other Charges (Income)	2.7	4.9	6.7	11.5
Asset Disposal Charges (Income)	0.0	2.5	0.0	5.6
Total	2.9	12.8	7.2	26.7
Project Foundation
Restructuring Charges
Severance and Employee Benefits	5.3		11.5
Other Charges (Income)	(3.0)		16.2
Asset Disposal Charges (Income)	134.2		198.9
Total	136.5		226.6
Other items
Restructuring Charges
Severance and Employee Benefits	0.0	0.0	0.0	(0.4)
Other Charges (Income)	0.1	0.2	0.2	0.3
Asset Disposal Charges (Income)	0.0	0.0	0.0	0.0
Total	$ 0.1	$ 0.2	$ 0.2	$ (0.1)

Amount, before tax, of (gain) loss recognized for the (reversal of write-down) write-down to fair value, less cost to sell, of a disposal group. Excludes discontinued operations.

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Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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