Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Statement [Abstract]
Sales	$ 3,920,733	$ 3,926,885	$ 3,778,505
Materials, supplies, labor and other production costs (exclusive of depreciation and amortization shown separately below)	2,009,063	2,026,367	1,963,153
Selling, distribution and administrative expenses	1,503,867	1,464,236	1,381,527
Depreciation and amortization	146,719	140,869	132,175
Restructuring and related impairment charges	104,130
Gain on divestiture	(28,875)
Pension plan settlement loss	4,649	6,646
Multi-employer pension plan withdrawal costs	18,268
Impairment of assets		24,877	3,771
Income from operations	162,912	263,890	297,879
Interest expense	36,557	34,905	26,815
Interest income	(22,938)	(20,552)	(21,967)
Income before income taxes	149,293	249,537	293,031
Income tax expense (benefit)	(827)	85,761	103,840
Net income	$ 150,120	$ 163,776	$ 189,191
Basic:
Net income per common share	$ 0.72	$ 0.79	$ 0.90
Weighted average shares outstanding	209,573	208,511	210,793
Diluted:
Net income per common share	$ 0.71	$ 0.78	$ 0.89
Weighted average shares outstanding	210,435	210,354	213,356
Cash dividends paid per common share	$ 0.6700	$ 0.6250	$ 0.5675