Accumulated Other Comprehensive (Loss) Income - Reclassifications (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	$ (228.9)	$ (202.1)	$ (442.8)	$ (403.0)
Total before taxes	(11.7)	(133.1)	(17.2)	(163.8)
Tax expense or (benefit)	3.4	1.4	(1.3)	4.7
Net of tax	(8.3)	(136.0)	(18.5)	(132.5)
Reclassification Out of Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	0.0	0.0	0.0	2.5
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Gains and losses on derivative instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before taxes	0.0	0.0	0.0	2.5
Tax expense or (benefit)	0.0	0.0	0.0	0.0
Net of tax	0.0	0.0	0.0	2.5
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Actuarial (losses)/gains
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial (losses)/gains	0.0	0.0	0.0	0.0
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Prior service costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	0.0	0.0	0.0	0.0
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Amortization of pension benefit plan items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before taxes	0.0	0.0	0.0	0.0
Tax expense or (benefit)	0.0	0.0	0.0	0.0
Net of tax	0.0	0.0	0.0	0.0
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Foreign currency and commodity hedges | Gains and losses on derivative instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	0.0	0.0	0.0	0.1
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Commodity hedges | Gains and losses on derivative instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on sale of discontinued operations	$ 0.0	$ 0.0	$ 0.0	2.4
Tax impact				$ 1.3