Restructuring and impairment charges - Expected Costs to be Incurred (Details) $ in Millions	3 Months Ended	6 Months Ended
Jun. 27, 2021 USD ($)	Jun. 27, 2021 USD ($)
2019 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Aggregate restructuring charges		$ 15.5
Restructuring reserve	$ 5.4	5.4
Restructuring expenses	3.9	7.4
Aggregate restructuring related charges		28.6
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	28.0	28.0
2019 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	61.0	61.0
Expected cash outlays	55.0	55.0
Expected capital expenditures	33.0	33.0
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Aggregate restructuring charges		61.9
Restructuring reserve	47.2	47.2
Restructuring expenses	2.3	4.3
Aggregate restructuring related charges		21.0
2018 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	103.0	103.0
Expected cash outlays	99.0	99.0
Expected capital expenditures	19.0	19.0
2018 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	133.0	133.0
Expected cash outlays	127.0	127.0
Expected capital expenditures	23.0	23.0
2014 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Aggregate restructuring charges		13.7
Restructuring reserve	3.1	3.1
Restructuring expenses	1.0	1.7
Aggregate restructuring related charges		37.7
2014 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	52.0	52.0
Expected cash outlays	42.0	42.0
Expected capital expenditures	26.0	26.0
2014 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	55.0	55.0
Expected cash outlays	46.0	46.0
Expected capital expenditures	27.0	27.0
Respiratory divestiture plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	24.0	24.0
Respiratory divestiture plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	30.0	30.0
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	16.0	16.0
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	70.0	70.0
Termination benefits \| 2014 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	13.0	13.0
Termination benefits \| 2014 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	13.0	13.0
Termination benefits \| Respiratory divestiture plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	2.5	2.5
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
Other Restructuring costs \| 2014 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	1.0	1.0
Other Restructuring costs \| 2014 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	2.0	2.0
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	18.0	18.0
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	74.0	74.0
Special Termination Benefit And Other Restructuring \| 2014 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	14.0	14.0
Special Termination Benefit And Other Restructuring \| 2014 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	15.0	15.0
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
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	40.0	40.0
Accelerated Depreciation And Other Costs \| 2018 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	59.0	59.0
Accelerated Depreciation And Other Costs \| 2014 Footprint realignment plan \| Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	38.0	38.0
Accelerated Depreciation And Other Costs \| 2014 Footprint realignment plan \| Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring charges	40.0	40.0
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

Aggregate Restructuring Charges

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Restructuring and Related Cost, Expected Cash Outlays

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Restructuring Costs Expected Aggregate Capital Expenditures

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- Definition

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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