REVENUE Deferred Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		May 05, 2019	May 06, 2018	Feb. 03, 2019
Deferred Revenue [Line Items]
Payment terms, due from customer		Payment is typically due within 30 to 90 days.
Long-term deferred revenue liabilities (included in Other Liabilities)		$ 2.1	$ 4.6	$ 2.3
Movement in Deferred Revenue [Roll Forward]
Deferred revenue, beginning balance		65.3	39.2
Impact of adopting the new revenue standard			15.6
Net additions to deferred revenue during the period		42.0	32.5
Reductions in deferred revenue for revenue recognized during the period	[1]	(51.4)	(39.5)
Deferred revenue, ending balance		$ 55.9	$ 47.8

[1] Represents the amount of revenue recognized during the period that was included in the deferred revenue balance at the beginning of the period, as adjusted in 2018 for the impact of adopting the new revenue standard, and does not contemplate revenue recognized from amounts deferred during the period.