Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Statement of Comprehensive Income [Abstract]
NET SALES	$ 6,158,491	$ 6,158,654	$ 11,981,012	$ 11,947,079
COST OF GOODS SOLD	5,044,638	5,104,605	9,875,232	9,901,722
Gross profit	1,113,853	1,054,049	2,105,780	2,045,357
OPERATING EXPENSES:
Distribution, selling and administrative costs	908,881	926,451	1,796,762	1,840,042
Restructuring (benefit) charges	(387)	704	1,165	2,577
Total operating expenses	908,494	927,155	1,797,927	1,842,619
OPERATING INCOME	205,359	126,894	307,853	202,738
OTHER (INCOME) EXPENSE—Net	(3,145)	1,320	(6,275)	640
INTEREST EXPENSE—Net	48,001	41,003	90,845	82,889
Income before income taxes	160,503	84,571	223,283	119,209
INCOME TAX PROVISION	34,970	19,113	30,433	26,935
NET INCOME	125,533	65,458	192,850	92,274
OTHER COMPREHENSIVE INCOME—Net of tax:
Changes in retirement benefit obligations	25,231	1,880	25,834	2,537
Unrecognized gain on interest rate swaps	3,644	0	12,684	0
COMPREHENSIVE INCOME	$ 154,408	$ 67,338	$ 231,368	$ 94,811
NET INCOME PER SHARE
Basic (in dollars per share)	$ 0.58	$ 0.29	$ 0.90	$ 0.42
Diluted (in dollars per share)	$ 0.58	$ 0.29	$ 0.89	$ 0.41
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING
Basic (in shares)	215,827,074	222,754,030	215,453,656	222,059,022
Diluted (in shares)	217,770,313	226,791,449	217,491,267	226,557,430