Cost Reduction Actions - Schedule of Restructuring and Related Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 9.8	$ 12.4	$ 22.7	$ 25.6
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.1	0.0	0.8	0.3
Materials Group \| Operating segments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4.5	1.5	9.5	5.6
Solutions Group \| Operating segments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5.2	$ 10.9	$ 12.4	$ 19.7

- 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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Avery Dennison Corp 10-Q