CONDENSED CONSOLIDATED INCOME STATEMENTS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017
Income Statement [Abstract]
Net sales	$ 5,525.6	$ 5,281.2	$ 11,079.3	$ 10,568.3
Cost of sales	3,861.7	3,653.4	7,715.8	7,313.4
Gross profit	1,663.9	1,627.8	3,363.5	3,254.9
Selling, general and administrative expenses, excluding Receivable impairment	1,281.4	1,205.7	2,543.4	2,393.1
Receivable impairment	0.0	2.6	0.0	53.5
Selling, general and administrative expenses, excluding Receivable impairment	1,281.4	1,208.3	2,543.4	2,446.6
Operating income	382.5	419.5	820.1	808.3
Interest expense, net	46.1	75.8	276.1	150.5
Other (income) expense, net	(1.3)	0.1	(1.1)	0.4
Income before income taxes	337.7	343.6	545.1	657.4
Income tax expense	63.8	109.8	110.7	223.1
Net income	$ 273.9	$ 233.8	$ 434.4	$ 434.3
Basic net income per share (usd per share)	$ 1.15	$ 0.99	$ 1.83	$ 1.84
Diluted net income per share (usd per share)	$ 1.15	$ 0.98	$ 1.82	$ 1.83