Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	May 02, 2015	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Details of Quarterly financial information
Net sales	$ 883,169	$ 710,822	$ 625,557	$ 648,793	$ 932,214	$ 773,898	$ 655,525	$ 660,597	$ 2,868,341	$ 3,022,234	$ 2,859,844
Gross margin	417,457	355,635	314,737	329,697	423,156	373,886	320,091	326,333	1,417,526	1,443,466
Earnings from continuing operations before income taxes	74,595	38,860	21,199	16,760	73,636	50,720	11,568	15,609	151,414	151,533	156,989
Earnings from continuing operations	46,843	25,948	14,504	10,564	44,988	32,855	7,593	9,945	97,859	95,381	99,373
Net earnings	$ 46,548	$ 25,895	$ 14,578	$ 10,410	$ 44,664	$ 32,507	$ 7,520	$ 9,878	$ 97,431	$ 94,569	$ 97,725
Diluted earnings per common share:
Continuing operations (USD per share)	$ 2.40	$ 1.30	$ 0.72	$ 0.50	$ 2.07	$ 1.43	$ 0.32	$ 0.42	$ 4.85	$ 4.15	$ 4.19
Net earnings (USD per share)	$ 2.39	$ 1.30	$ 0.72	$ 0.50	$ 2.06	$ 1.42	$ 0.32	$ 0.42	$ 4.83	$ 4.11	$ 4.12