ACCUMULATED OTHER COMPREHENSIVE LOSS CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2017	May 01, 2016	Jan. 29, 2017	Jan. 31, 2016
Balance, foreign currency translation adjustments, net of tax	$ (666.7)	$ (546.2)	$ (737.7)	$ (730.4)
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments	71.0	184.2
Amounts reclassified from AOCL, foreign currency translation adjustments, net of tax	0.0	0.0
Foreign currency translation adjustments, net of tax	71.0	184.2
Balance, net unrealized and realized gain (loss) on effective cash flow hedges, net of tax	15.3	(28.7)	26.9	26.2
Other comprehensive income (loss) before reclassifications, net unrealized and realized gain (loss) on effective cash flow hedges, net of tax	(8.5)	(52.5)
Amounts reclassified from AOCL, net unrealized and realized gain (loss) on effective cash flow hedges, net of tax	3.1	2.4
Net unrealized and realized loss related to effective cash flow hedges, net of tax	(11.6)	(54.9)
Accumulated other comprehensive loss	(651.4)	(574.9)	$ (710.8)	$ (704.2)
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax	62.5	131.7
Amounts reclassified from AOCL, total, net of tax	3.1	2.4
Total other comprehensive income	59.4	129.3
Net loss on net investment hedge, net of tax	$ (5.3)	$ 0.0