Accumulated Other Comprehensive (Loss) Income - Reclassifications (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	$ (200.9)	$ (184.6)
Total before taxes	(30.7)	(24.1)
Tax expense or (benefit)	3.3	1.4
Net income (loss)	3.5	(19.7)
Reclassification Out of Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	2.5	(2.6)
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Gains and losses on derivative instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	0.1	(2.6)
Gain on sale of discontinued operations	2.4	0.0
Total before taxes	2.5	(2.6)
Tax expense or (benefit)	0.0	0.0
Net income (loss)	2.5	(2.6)
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Recognized net actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Actuarial (losses)/gains	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
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
Tax expense or (benefit)	0.0	0.0
Net income (loss)	0.0	$ 0.0
Tax impact	$ 1.3