Restructuring and impairment charges - Expected costs to be incurred (Details) $ in Millions	3 Months Ended	6 Months Ended
Jun. 26, 2022 USD ($)	Jun. 26, 2022 USD ($)
Respiratory divestiture plan
Restructuring Cost and Reserve [Line Items]
Aggregate restructuring charges		$ 3.0
Restructuring reserve	$ 2.8	2.8
Restructuring expenses	2.4	4.4
Aggregate restructuring related charges		7.7
Respiratory divestiture plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	24.0	24.0
Expected cash outlays	24.0	24.0
Expected capital expenditures	22.0	22.0
Respiratory divestiture plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	30.0	30.0
Expected cash outlays	30.0	30.0
Expected capital expenditures	28.0	28.0
2019 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Aggregate restructuring charges		14.5
Restructuring reserve	1.7	1.7
Restructuring expenses	1.8	2.9
Aggregate restructuring related charges		37.1
2019 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	54.0	54.0
Expected cash outlays	48.0	48.0
Expected capital expenditures	31.0	31.0
2019 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	60.0	60.0
Expected cash outlays	54.0	54.0
Expected capital expenditures	33.0	33.0
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Aggregate restructuring charges		63.1
Restructuring reserve	38.8	38.8
Restructuring expenses	3.2	5.5
Aggregate restructuring related charges		32.9
2018 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	110.0	110.0
Expected cash outlays	99.0	99.0
Expected capital expenditures	15.0	15.0
2018 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	128.0	128.0
Expected cash outlays	122.0	122.0
Expected capital expenditures	16.0	16.0
Termination benefits \| Respiratory divestiture plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	5.0	5.0
Termination benefits \| Respiratory divestiture plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	8.0	8.0
Termination benefits \| 2019 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	14.0	14.0
Termination benefits \| 2019 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	15.0	15.0
Termination benefits \| 2018 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	60.0	60.0
Termination benefits \| 2018 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	65.0	65.0
Other Restructuring costs \| Respiratory divestiture plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	0.0	0.0
Other Restructuring costs \| Respiratory divestiture plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	0.0	0.0
Other Restructuring costs \| 2019 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	2.0	2.0
Other Restructuring costs \| 2019 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	2.0	2.0
Other Restructuring costs \| 2018 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	3.0	3.0
Other Restructuring costs \| 2018 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	4.0	4.0
Special Termination Benefit And Other Restructuring \| Respiratory divestiture plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	5.0	5.0
Special Termination Benefit And Other Restructuring \| Respiratory divestiture plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	8.0	8.0
Special Termination Benefit And Other Restructuring \| 2019 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	16.0	16.0
Special Termination Benefit And Other Restructuring \| 2019 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	17.0	17.0
Special Termination Benefit And Other Restructuring \| 2018 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	63.0	63.0
Special Termination Benefit And Other Restructuring \| 2018 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	69.0	69.0
Accelerated Depreciation And Other Costs \| Respiratory divestiture plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	19.0	19.0
Accelerated Depreciation And Other Costs \| Respiratory divestiture plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	22.0	22.0
Accelerated Depreciation And Other Costs \| 2019 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	38.0	38.0
Accelerated Depreciation And Other Costs \| 2019 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	43.0	43.0
Accelerated Depreciation And Other Costs \| 2018 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	47.0	47.0
Accelerated Depreciation And Other Costs \| 2018 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	$ 59.0	$ 59.0

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Restructuring and Related Cost, Expected Cash Outlays

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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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Amount, after cash payment, 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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