Restructuring charges, separation costs and impairment charges - Summary of Our Cost Estimates and Other Information (Details) $ in Millions	3 Months Ended	6 Months Ended	14 Months Ended	22 Months Ended
Jun. 29, 2025 USD ($)	Jun. 29, 2025 USD ($)	Jun. 29, 2025 USD ($)	Jun. 29, 2025 USD ($)
2024 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Aggregate restructuring charges			$ 13.5
Restructuring reserve	$ 10.3	$ 10.3	10.3	$ 10.3
Restructuring expenses	2.4	6.2	12.8
2024 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	37.0	37.0	37.0	37.0
Expected cash outlays	31.0	31.0	31.0	31.0
Capital expenditures, expected cash outlays	15.0	15.0	15.0	15.0
2024 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	46.0	46.0	46.0	46.0
Expected cash outlays	38.0	38.0	38.0	38.0
Capital expenditures, expected cash outlays	17.0	17.0	17.0	17.0
2024 Footprint realignment plan \| Special Termination Benefit And Other Restructuring \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	16.0	16.0	16.0	16.0
2024 Footprint realignment plan \| Special Termination Benefit And Other Restructuring \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	20.0	20.0	20.0	20.0
2024 Footprint realignment plan \| Accelerated Depreciation And Other Costs \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	21.0	21.0	21.0	21.0
2024 Footprint realignment plan \| Accelerated Depreciation And Other Costs \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	26.0	26.0	26.0	26.0
2023 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Aggregate restructuring charges				3.2
Restructuring reserve	2.9	2.9	2.9	2.9
Restructuring expenses	0.9	1.5		4.2
2023 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	11.0	11.0	11.0	11.0
Expected cash outlays	11.0	11.0	11.0	11.0
Capital expenditures, expected cash outlays	2.0	2.0	2.0	2.0
2023 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	15.0	15.0	15.0	15.0
Expected cash outlays	15.0	15.0	15.0	15.0
Capital expenditures, expected cash outlays	3.0	3.0	3.0	3.0
2023 Footprint realignment plan \| Special Termination Benefit And Other Restructuring \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	4.0	4.0	4.0	4.0
2023 Footprint realignment plan \| Special Termination Benefit And Other Restructuring \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	6.0	6.0	6.0	6.0
2023 Footprint realignment plan \| Accelerated Depreciation And Other Costs \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	7.0	7.0	7.0	7.0
2023 Footprint realignment plan \| Accelerated Depreciation And Other Costs \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	$ 9.0	$ 9.0	$ 9.0	$ 9.0

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Amount expected to be recognized in earnings for the specified restructuring cost.

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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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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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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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