CONSOLIDATED STATEMENTS OF EARNINGS (USD $)	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2013
Income Statement [Abstract]
Net sales	$ 4,249,913,000	$ 4,031,130,000	$ 3,794,249,000
Cost of sales	1,712,738,000	1,690,687,000	1,630,965,000
Gross profit	2,537,175,000	2,340,443,000	2,163,284,000
Selling, general and administrative expenses	1,645,746,000	1,555,903,000	1,466,067,000
Arbitration award expense	0	480,211,000	0
Earnings from operations	891,429,000	304,329,000	697,217,000
Interest expense and financing costs	62,903,000	62,654,000	59,069,000
Other income, net	2,790,000	13,191,000	5,428,000
Loss on Extinguishment of Debt	93,779,000	0	0
Earnings from operations before income taxes	737,537,000	254,866,000	643,576,000
Provision for income taxes	253,358,000	73,497,000	227,419,000
Net earnings	$ 484,179,000	$ 181,369,000	$ 416,157,000
Net earnings per share:
Basic	$ 3.75	$ 1.42	$ 3.28
Diluted	$ 3.73	$ 1.41	$ 3.25
Weighted-average number of common shares:
Basic	129,221,000	127,835,000	126,737,000
Diluted	129,918,000	128,867,000	127,934,000