Restructuring and Transformation Program - Costs Included in Selling, General & Administrative Expenses (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 10.1	$ 1.1	$ 58.4	$ 26.3
Transformation costs	16.1	11.5	45.1	48.6
Total restructuring and transformation costs	26.2	12.6	103.5	74.9
Asset impairment and write-offs
Restructuring Cost and Reserve [Line Items]
Transformation costs	0.0	0.7	0.0	16.2
Other transformation costs
Restructuring Cost and Reserve [Line Items]
Transformation costs	16.1	10.8	45.1	32.4
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	7.0	0.0	53.1	20.3
Other restructuring costs and related adjustments
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 3.1	$ 1.1	$ 5.3	$ 6.0

- Definition

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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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