Changes in Accumulated Other Comprehensive Loss - Reclassifications from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2020	Mar. 29, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest expense	$ 0.1	$ 2.1
Net income (loss)	(13.7)	114.1
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net income (loss)	1.9	(1.4)
Effects of Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest expense	$ 1.9	$ (1.4)