Quarterly Financial Data (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 1,924,104	$ 1,961,536	$ 1,976,299	$ 1,486,815	$ 1,435,659	$ 1,473,493	$ 1,469,793	$ 1,409,035	$ 7,348,754	[1]	$ 5,787,980	[1]	$ 5,642,258	[1]
Gross profit	512,797	516,890	514,056	377,066	369,331	372,837	388,464	359,426	1,920,809		1,490,058		1,416,879
Net earnings	$ 94,651	$ 119,068	$ 84,572	$ 50,495	$ 66,389	$ 70,304	$ 73,188	$ 40,377	$ 348,786		$ 250,258		$ 173,922
Basic earnings per share	$ 1.30	$ 1.64	$ 1.17	$ 0.73	$ 0.96	$ 1.02	$ 1.06	$ 0.59	$ 4.86		$ 3.63		$ 2.53
Diluted earnings per share	$ 1.29	$ 1.63	$ 1.16	$ 0.72	$ 0.96	$ 1.01	$ 1.06	$ 0.58	$ 4.82		$ 3.61		$ 2.52

[1] The Soft surface product category includes carpets, rugs, carpet pad and resilient. The Tile product category includes ceramic tile, porcelain tile and natural stone. The Wood product category includes laminate, hardwood, roofing elements, insulation boards, MDF, chipboards, other wood-based products and licensing.