CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 30, 2017	Jul. 31, 2016	Jul. 30, 2017	Jul. 31, 2016	Jan. 29, 2017	Jan. 31, 2016
Balance, foreign currency translation adjustments, net of tax	$ (451.3)	$ (640.9)	$ (451.3)	$ (640.9)	$ (737.7)	$ (730.4)
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments			286.4	89.5
Amounts reclassified from AOCL, foreign currency translation adjustments, net of tax			0.0	0.0
Net (loss) gain on net investment hedge, net of tax	(17.2)	4.9	(22.5)	4.9
Foreign currency translation adjustments, net of tax			286.4	89.5
Balance, net unrealized and realized gain (loss) on effective cash flow hedges, net of tax	(45.3)	(11.8)	(45.3)	(11.8)	26.9	26.2
Other comprehensive income (loss) before reclassifications, net unrealized and realized gain (loss) on effective cash flow hedges, net of tax			(66.6)	(35.2)
Amounts reclassified from AOCL, net unrealized and realized gain (loss) on effective cash flow hedges, net of tax	2.5	0.4	5.6	2.8
Net unrealized and realized (loss) gain related to effective cash flow hedges, net of tax	(60.6)	16.9	(72.2)	(38.0)
Accumulated other comprehensive loss	(496.6)	(652.7)	(496.6)	(652.7)	$ (710.8)	$ (704.2)
Other Comprehensive Income (Loss), Before Reclassifications, Net of Tax			219.8	54.3
Amounts reclassified from AOCL, total, net of tax			5.6	2.8
Total other comprehensive income (loss)	$ 154.8	$ (77.8)	$ 214.2	$ 51.5