Condensed Consolidated Statements Of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Pre-tax amount
Foreign currency translation adjustments	$ 24.6	$ (39.9)	$ 25.1	$ (9.1)
Available-for-sale securities:
Unrealized loss on securities, net	0.5	0.3	0.8	0.7
Cash flow hedges:
Unrealized gain	(1.3)	3.4	3.2	9.3
Reclassification adjustment for (gains) losses to net income	(1.4)	1.0	(3.3)	2.6
Pension plan:
Reclassification adjustment to net income for amortization of actuarial losses	0.8	0.4	1.5	0.8
Reclassification adjustment to net income for amortization of prior service credits	(0.5)	(0.5)	(0.9)	(1.0)
Total other comprehensive income (loss)	22.7	(35.3)	26.4	3.3
Tax (expense) benefit
Foreign currency translation adjustments	0.0	0.0	0.0	0.0
Available-for-sale securities:
Unrealized gain	(0.2)	(0.1)	(0.3)	(0.3)
Cash flow hedges:
Unrealized gain	0.4	(0.7)	(1.4)	(3.0)
Reclassification adjustment for (gains) losses to net income	0.3	(0.4)	0.8	(0.9)
Pension plan:
Reclassification adjustment to net income for amortization of actuarial losses	(0.2)	(0.1)	(0.3)	(0.2)
Reclassification adjustment to net income for amortization of prior service credits	0.1	0.1	0.2	0.2
Total other comprehensive income (loss)	0.4	(1.2)	(1.0)	(4.2)
After-tax amount
Net income	93.4	81.9	171.9	228.7
Foreign currency translation adjustments	24.6	(39.9)	25.1	(9.1)
Available-for-sale securities:
Unrealized gain	0.3	0.2	0.5	0.4
Cash flow hedges:
Unrealized gain	(0.9)	2.7	1.8	6.3
Reclassification adjustment for (gains) losses to net income	(1.1)	0.6	(2.5)	1.7
Pension plan:
Reclassification adjustment to net income for amortization of actuarial losses	0.6	0.3	1.2	0.6
Reclassification adjustment to net income for amortization of prior service credits	(0.4)	(0.4)	(0.7)	(0.8)
Total other comprehensive income (loss)	23.1	(36.5)	25.4	(0.9)
Total comprehensive income	$ 116.5	$ 45.4	$ 197.3	$ 227.8