Condensed Consolidated Statements Of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Pre-tax amount
Foreign currency translation adjustments	$ (2.8)	$ 19.9	$ (11.1)	$ (6.1)
Available-for-sale securities:
Unrealized gain (loss)	(0.1)	(0.6)	0.3	(0.3)
Reclassification adjustment for (gains) losses to net income	0.0	1.0	0.0	1.0
Cash flow hedges:
Unrealized gain (loss)	0.0	3.4	0.2	11.5
Reclassification adjustment for (gains) losses to net income	(1.8)	(0.5)	(13.4)	(1.0)
Pension plan:
Reclassification adjustment to net income for amortization of actuarial (gains) losses	0.1	0.3	0.2	0.9
Reclassification adjustment to net income for amortization of net prior service credits	0.4	0.0	0.7	0.0
Total other comprehensive income (loss)	(4.2)	23.5	(23.1)	6.0
Tax (expense) benefit
Foreign currency translation adjustments	0.0	0.0	0.0	0.0
Available-for-sale securities:
Unrealized gain (loss)	0.0	0.2	0.0	0.1
Reclassification adjustment for (gains) losses to net income	0.0	0.0	0.0	0.0
Cash flow hedges:
Unrealized gain (loss)	0.0	(1.0)	0.0	(2.9)
Reclassification adjustment for (gains) losses to net income	(0.1)	0.1	2.6	0.2
Pension plan:
Reclassification adjustment to net income for amortization of actuarial (gains) losses	0.0	0.0	0.0	(0.1)
Reclassification adjustment to net income for amortization of net prior service credits	(0.1)	0.0	(0.1)	0.0
Total other comprehensive income (loss)	(0.2)	(0.7)	2.5	(2.7)
After-tax amount
Net income (loss)	9.3	(35.5)	(269.5)	(81.6)
Foreign currency translation adjustments	(2.8)	19.9	(11.1)	(6.1)
Available-for-sale securities:
Unrealized gain (loss)	(0.1)	(0.4)	0.3	(0.2)
Reclassification adjustment for (gains) losses to net income	0.0	1.0	0.0	1.0
Cash flow hedges:
Unrealized gain (loss)	0.0	2.4	0.2	8.6
Reclassification adjustment for (gains) losses to net income	(1.9)	(0.4)	(10.8)	(0.8)
Pension plan:
Reclassification adjustment to net income for amortization of actuarial (gains) losses	0.1	0.3	0.2	0.8
Reclassification adjustment to net income for amortization of net prior service credits	0.3	0.0	0.6	0.0
Total other comprehensive income (loss)	(4.4)	22.8	(20.6)	3.3
Total comprehensive income (loss)	$ 4.9	$ (12.7)	$ (290.1)	$ (78.3)