Derivatives - Derivative Instruments Designated as Cash Flow Hedges in OCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Current period gains (losses) recognized in OCI	$ (0.1)	$ 0.0	$ (0.2)	$ 0.2
Losses (gains) reclassified from AOCI to net income	0.3	(0.9)	0.5	(11.6)
Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Gains (losses) recorded in AOCI, beginning of period			(1.1)
Gains (losses) recorded in AOCI, end of period	(0.8)	5.3	(0.8)	5.3
Foreign currency contracts | Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Gains (losses) recorded in AOCI, beginning of period	(0.6)	0.0	(0.7)	(1.0)
Current period gains (losses) recognized in OCI	(0.2)	0.0	(0.2)	1.6
Gains (losses) recorded in AOCI, end of period	(0.6)	0.0	(0.6)	0.0
Commodity contracts | Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Gains (losses) recorded in AOCI, beginning of period	(0.4)	6.2	(0.4)	17.7
Current period gains (losses) recognized in OCI	0.1	0.0	0.0	(1.4)
Gains (losses) recorded in AOCI, end of period	(0.2)	5.3	(0.2)	5.3
Cost of sales | Foreign currency contracts | Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Losses (gains) reclassified from AOCI to net income	0.2	0.0	0.3	0.0
Cost of sales | Commodity contracts | Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Losses (gains) reclassified from AOCI to net income	0.1	(0.9)	0.2	(1.7)
Other operating income, net | Foreign currency contracts | Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Losses (gains) reclassified from AOCI to net income	0.0	0.0	0.0	(0.6)
Other operating income, net | Commodity contracts | Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Losses (gains) reclassified from AOCI to net income	$ 0.0	$ 0.0	$ 0.0	$ (9.3)