Condensed Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Pre-tax amount
Foreign currency translation adjustments	$ (28.9)	$ (4.2)	$ (38.0)	$ (1.4)
Available-for-sale securities:
Unrealized loss on securities, net	(0.4)	(0.1)	0.3	(0.4)
Cash flow hedges:
Unrealized gain (loss)	1.9	2.2	11.2	(15.0)
Reclassification adjustment of losses to net income (loss)	(0.2)	1.1	2.4	2.9
Pension plan:
Reclassification adjustment to net income for amortization of actuarial losses	0.4	0.9	1.2	2.6
Reclassification adjustment to net income for amortization of prior service credits	(0.5)	(0.6)	(1.5)	(1.7)
Total other comprehensive (loss) income	(27.7)	(0.7)	(24.4)	(13.0)
Tax (expense) benefit
Foreign currency translation adjustments	0.0	0.0	0.0	0.0
Available-for-sale securities:
Unrealized loss on securities, net	0.2	0.0	(0.1)	0.0
Cash flow hedges:
Unrealized gain (loss)	0.0	(1.1)	(3.0)	4.7
Reclassification adjustment of losses to net income (loss)	0.1	(0.2)	(0.8)	(0.7)
Pension plan:
Reclassification adjustment to net income for amortization of actuarial losses	0.0	(0.2)	(0.2)	(0.5)
Reclassification adjustment to net income for amortization of prior service credits	0.1	0.1	0.3	0.3
Total other comprehensive (loss) income	0.4	(1.4)	(3.8)	3.8
After-tax amount
Net income	17.0	15.0	245.7	196.0
Foreign currency translation adjustments	(28.9)	(4.2)	(38.0)	(1.4)
Available-for-sale securities:
Unrealized loss on securities, net	(0.2)	(0.1)	0.2	(0.4)
Cash flow hedges:
Unrealized gain (loss)	1.9	1.1	8.2	(10.3)
Reclassification adjustment of losses to net income (loss)	(0.1)	0.9	1.6	2.2
Pension plan:
Reclassification adjustment to net income for amortization of actuarial losses	0.4	0.7	1.0	2.1
Reclassification adjustment to net income for amortization of prior service credits	(0.4)	(0.5)	(1.2)	(1.4)
Total other comprehensive (loss) income	(27.3)	(2.1)	(28.2)	(9.2)
Total comprehensive income (loss)	$ (10.3)	$ 12.9	$ 217.5	$ 186.8