Derivatives - Derivative Instruments Designated as Cash Flow Hedges in OCI (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Aug. 01, 2020	Aug. 03, 2019	Aug. 01, 2020	Aug. 03, 2019
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Current period gains (losses) recognized in OCI	$ 0.0	$ 12.4	$ 0.2	$ 8.1
Losses (gains) reclassified from AOCI to net income	(0.9)	0.0	(11.6)	(0.5)
Cost of sales	(663.9)	(901.3)	(1,312.2)	(1,833.6)
Other operating income, net	1.1	1.4	4.7	1.4
Interest expense, net	(9.4)	(10.1)	(16.5)	(19.3)
Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Gains (losses) recorded in AOCI, beginning of period			16.7
Gains (losses) recorded in AOCI, end of period	5.3	12.9	5.3	12.9
Foreign currency contracts \| Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Gains (losses) recorded in AOCI, beginning of period	0.0	0.4	(1.0)	0.7
Current period gains (losses) recognized in OCI	0.0	1.6	1.6	1.6
Gains (losses) recorded in AOCI, end of period	0.0	1.7	0.0	1.7
Commodity contracts \| Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Gains (losses) recorded in AOCI, beginning of period	6.2	0.1	17.7	4.0
Current period gains (losses) recognized in OCI	0.0	10.8	(1.4)	6.5
Gains (losses) recorded in AOCI, end of period	5.3	11.2	5.3	11.2
Interest rate swaps \| Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Gains (losses) recorded in AOCI, beginning of period	0.0	0.0	0.0	0.6
Gains (losses) recorded in AOCI, end of period	0.0	0.0	0.0	0.0
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	0.0	(0.3)	0.0	(0.6)
Cost of sales \| Commodity contracts \| Cash Flow Hedging
Movement in Accumulated Other Comprehensive Income [Roll Forward]
Losses (gains) reclassified from AOCI to net income	(0.9)	0.3	(1.7)	0.7
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	(0.6)	0.0
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	(9.3)	0.0
Interest expense, net \| Interest rate swaps \| 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)

Movement in Accumulated Other Comprehensive Income [Roll Forward]

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Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, including portion attributable to noncontrolling interest. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).

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- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.

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