Consolidated Income Statements - USD ($) shares in Millions, $ in Millions	3 Months Ended											12 Months Ended
	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	May. 02, 2015	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	May. 03, 2014	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Income Statement [Abstract]
Sales												$ 6,550.2	$ 5,736.3	$ 4,209.2
Cost of sales												(4,109.8)	(3,662.1)	(2,628.7)
Gross margin												2,440.4	2,074.2	1,580.5
Selling, general and administrative expenses												(1,987.6)	(1,712.9)	(1,196.7)
Other operating income, net												250.9	215.3	186.7
Operating income												703.7	576.6	570.5
Interest expense, net												(45.9)	(36.0)	(4.0)
Income before income taxes												657.8	540.6	566.5
Income taxes												(189.9)	(159.3)	(198.5)
Net income (loss)												$ 467.9	$ 381.3	$ 368.0
Earnings per share: basic (usd per share)												$ 5.89	$ 4.77	$ 4.59
Earnings per share: diluted (usd per share)												$ 5.87	$ 4.75	$ 4.56
Basic weighted average common shares outstanding (in shares)												79.5	79.9	80.2
Weighted average common shares outstanding: diluted (in shares)												79.7	80.2	80.7
Dividends declared per share (usd per share)	$ 0.22	$ 0.22	$ 0.22	$ 0.22	$ 0.18	$ 0.18	$ 0.18	$ 0.18	$ 0.15	$ 0.15	$ 0.15	$ 0.88	$ 0.72	$ 0.6