Consolidated Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of Accumulated Other Comprehensive (Loss) Income to Total Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	$ (294.6)	$ (289.9)	$ (291.0)	$ (291.2)	$ (309.0)	$ (298.8)	$ (302.2)	$ (287.3)	$ (1,166.7)	$ (1,197.3)	$ (1,142.0)
Income tax (expense) benefit									(9.5)	4.8	30.0
Net (loss) income									2.9	383.5	7.1
Tax Impact									3.6
Reclassification Out of Accumulated Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (loss) income									(8.0)	(32.5)	1.0
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									(8.0)	(6.2)	1.3
Total before taxes									(8.0)	(6.2)	1.3
Income tax (expense) benefit									0.0	0.0	0.0
Net (loss) income									(8.0)	(6.2)	1.3
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Pension Benefit Plan Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before taxes									0.0	(16.9)	(0.3)
Income tax (expense) benefit									0.0	0.0	0.0
Net (loss) income									0.0	(16.9)	(0.3)
Recognized Actuarial loss									0.0	(16.9)	0.0
Actuarial (losses)/gains									0.0	0.0	(0.3)
Tax Impact										(3.6)
Reclassification Out of Accumulated Other Comprehensive (Loss) Income | Currency Translation Adjustment Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Recognized Actuarial loss									$ 0.0	$ (9.4)	$ 0.0