QUARTERLY FINANCIAL INFORMATION (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended										12 Months Ended
	Jan. 31, 2015 store	Nov. 01, 2014 store	Aug. 02, 2014 store	May 03, 2014 store		Feb. 01, 2014 store	Nov. 02, 2013 store	Aug. 03, 2013 store	May 04, 2013 store		Jan. 31, 2015 store	Feb. 01, 2014 store	Feb. 02, 2013
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 2,475.6	$ 2,095.2	$ 2,031.1	$ 2,000.3	[1]	$ 2,234.9	$ 1,884.7	$ 1,854.9	$ 1,865.8	[1]	$ 8,602.2	$ 7,840.3	$ 7,394.5
Gross profit	918.1	725.3	694.1	696.6	[1]	825.2	659.9	648.7	656.0	[1]	3,034.0	2,789.8	2,652.7
Operating income	383.6	219.7	205.0	231.9	[1]	348.2	204.3	201.3	216.6	[1]	1,040.2	970.3	920.1
Net income	$ 206.6	$ 133.0	$ 121.5	$ 138.3	[1]	$ 213.0	$ 125.4	$ 124.7	$ 133.5	[1]	$ 599.2	$ 596.7	$ 619.3
Diluted net income per share (usd per share)	$ 1.00	$ 0.64	$ 0.59	$ 0.67	[1]	$ 1.02	$ 0.58	$ 0.56	$ 0.59	[1]	$ 2.90	$ 2.72	$ 2.68
Stores open at end of quarter	5,367	5,282	5,166	5,080	[1]	4,992	4,953	4,842	4,763	[1]	5,367	4,992
Comparable store net sales change (in hundredths)	5.50%	5.90%	4.40%	1.90%	[1]	1.20%	3.10%	3.70%	2.10%	[1]

[1] Easter was observed on April 20, 2014 and March 31, 2013.