Taxes on Earnings (Loss) (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020	Jan. 30, 2021
Income Tax Disclosure [Abstract]
Effective income tax rate (percent)	25.00%	61.00%	24.00%	31.00%
Effective income tax rate, decrease from prior year (percent)	0.36		0.07
Unrecognized tax benefits	$ 75.6	$ 71.6	$ 75.6	$ 71.6	$ 67.9
Income tax penalties and interest accrued	9.7	$ 8.5	9.7	$ 8.5	$ 7.7
Impact of recognizing taxes and interest related to unrecognized tax benefits	60.3		60.3
Unrecognized tax benefits reduction resulting from conclusion of certain state tax matters or lapse of applicable statute of limitations (up to)	$ 11.1		$ 11.1

Effective Income Tax Rate, Change From Prior Year, Percent

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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