Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Statement Of Income And Comprehensive Income [Abstract]
NET SALES	$ 5,788,425	$ 5,593,149
COST OF GOODS SOLD	4,797,117	4,633,381
Gross profit	991,308	959,768
OPERATING EXPENSES:
Distribution, selling and administrative costs	912,911	864,314
Restructuring charges	1,873	10,777
Total operating expenses	914,784	875,091
OPERATING INCOME	76,524	84,677
INTEREST EXPENSE — Net	41,886	70,559
Income before income taxes	34,638	14,118
INCOME TAX PROVISION	7,822	807
NET INCOME	26,816	13,311
OTHER COMPREHENSIVE INCOME — Net of tax:
Changes in retirement benefit obligations, net of income tax	657	2,633
COMPREHENSIVE INCOME	$ 27,473	$ 15,944
NET INCOME PER SHARE
Basic	$ 0.12	$ 0.08
Diluted	$ 0.12	$ 0.08
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic	221,364,013	169,121,722
Diluted	226,323,410	171,499,932
DISTRIBUTION DECLARED AND PAID
Distribution declared and paid per share (Note 12)		$ 3.94