Condensed Consolidated Statements Of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Pre-tax amount
Foreign currency translation adjustments	$ 0.7	$ 18.4	$ 7.4	$ (8.3)
Available-for-sale securities:
Unrealized gain (loss)	0.0	0.1	(0.1)	0.4
Cash flow hedges:
Unrealized gain (loss)	(0.1)	0.0	(0.2)	0.2
Reclassification adjustment for losses (gains) to earnings	0.3	(0.9)	0.5	(11.6)
Pension plan:
Reclassification adjustment for amortization of actuarial losses (gains) to earnings	0.2	0.0	0.4	0.1
Reclassification adjustment for amortization of net prior service credits to earnings	0.1	0.1	0.1	0.3
Total other comprehensive income (loss)	1.2	17.7	8.1	(18.9)
Tax (expense) benefit
Foreign currency translation adjustments	0.0	0.0	0.0	0.0
Available-for-sale securities:
Unrealized gain (loss)	0.0	0.0	0.0	0.0
Cash flow hedges:
Unrealized gain (loss)	0.0	0.0	0.0	0.0
Reclassification adjustment for losses (gains) to earnings	(0.1)	0.1	(0.1)	2.7
Pension plan:
Reclassification adjustment for amortization of actuarial losses (gains) to earnings	(0.1)	0.0	(0.1)	0.0
Reclassification adjustment for amortization of net prior service credits to earnings	0.0	0.0	0.0	0.0
Total other comprehensive income (loss)	(0.2)	0.1	(0.2)	2.7
After-tax amount
Net income (loss)	224.6	(81.7)	363.0	(278.8)
Foreign currency translation adjustments	0.7	18.4	7.4	(8.3)
Available-for-sale securities:
Unrealized gain (loss)	0.0	0.1	(0.1)	0.4
Cash flow hedges:
Unrealized gain (loss)	(0.1)	0.0	(0.2)	0.2
Reclassification adjustment for losses (gains) to earnings	0.2	(0.8)	0.4	(8.9)
Pension plan:
Reclassification adjustment for amortization of actuarial losses (gains) to earnings	0.1	0.0	0.3	0.1
Reclassification adjustment for amortization of net prior service credits to earnings	0.1	0.1	0.1	0.3
Total other comprehensive income (loss)	1.0	17.8	7.9	(16.2)
Total comprehensive income (loss)	$ 225.6	$ (63.9)	$ 370.9	$ (295.0)