QUARTERLY FINANCIAL DATA (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
QUARTERLY FINANCIAL DATA (Unaudited)
Net sales	$ 763,136	$ 765,668	$ 842,599	$ 751,740	$ 827,890	$ 778,032	$ 878,659	$ 819,630	$ 3,123,143	$ 3,304,211	$ 3,029,541
Gross profit	181,158	199,500	220,477	206,982	222,824	225,564	261,471	235,369	808,117	945,228	802,456
Net Earnings, Amount	40,461	23,559	63,976	55,980	54,868	56,489	89,563	77,569	183,976	278,489	234,072
Net Earnings, Per Share, Basic (in dollars per share)	$ 1.67	$ 0.93	$ 2.40	$ 2.10	$ 2.06	$ 2.12	$ 3.36	$ 2.92	$ 7.15	$ 10.45	$ 8.84
Net Earnings, Per Share, Diluted (in dollars per share)	$ 1.66	$ 0.92	$ 2.38	$ 2.08	$ 2.04	$ 2.10	$ 3.33	$ 2.89	$ 7.09	$ 10.35	$ 8.75
Stock Price, High (in dollars per share)	$ 139.31	$ 155.62	$ 163.23	$ 155.64	$ 150.58	$ 153.16	$ 157.99	$ 164.93	$ 163.23	$ 164.93
Stock Price, Low (in dollars per share)	$ 123.44	$ 131.68	$ 143.02	$ 141.74	$ 129.00	$ 133.38	$ 132.16	$ 133.40	$ 123.44	$ 129.00
Dividends Declared (in dollars per share)	$ 0.375	$ 0.375	$ 0.375	$ 0.250	$ 0.250	$ 0.250	$ 0.250	$ 0.225	$ 1.375	$ 0.975	$ 0.855
Quarterly Financial Data
Non-cash after-tax loss on deconsolidation										12,011
EMD
Quarterly Financial Data
Non-cash after-tax loss on deconsolidation					12,011
Non-cash after-tax loss on deconsolidation (in dollars per share)					$ 0.45
Fixed asset impairment loss					$ 4,569
Fixed asset impairment loss (in dollars per share)					$ 0.17