Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Apr. 22, 2017	Dec. 31, 2016	Apr. 23, 2016	Jan. 02, 2016
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 126,087	$ 135,178	$ 103,708	$ 90,782
Receivables, net	683,024	641,252
Inventories	4,413,803	4,325,868
Other current assets	83,779	70,466
Total current assets	5,306,693	5,172,764
Property and equipment, net of accumulated depreciation	1,439,621	1,446,340
Goodwill	990,695	990,877
Intangible assets, net	626,974	640,903
Other assets, net	64,674	64,149
Investment in subsidiaries	0	0
Intercompany note receivable	0	0
Due from intercompany, net	0	0
Assets, Total	8,428,657	8,315,033
Accounts payable	3,049,218	3,086,177
Accrued expenses	563,276	554,397
Other current liabilities	47,137	35,472
Total current liabilities	3,659,631	3,676,046
Long-term debt	1,073,372	1,042,949
Deferred income taxes	446,128	454,282
Other long-term liabilities	225,851	225,564
Intercompany note payable	0	0
Due to intercompany, net	0	0
Commitments and contingencies
Total stockholders' equity	3,023,675	2,916,192
Liabilities and Stockholders' Equity, Total	8,428,657	8,315,033
Parent Company [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	22	22	8	8
Receivables, net	0	0
Inventories	0	0
Other current assets	179	0
Total current assets	201	22
Property and equipment, net of accumulated depreciation	120	128
Goodwill	0	0
Intangible assets, net	0	0
Other assets, net	4,513	4,634
Investment in subsidiaries	3,121,169	3,008,856
Intercompany note receivable	1,048,508	1,048,424
Due from intercompany, net	0	0
Assets, Total	4,174,511	4,062,064
Accounts payable	35	0
Accrued expenses	2,000	1,505
Other current liabilities	0	0
Total current liabilities	2,035	1,505
Long-term debt	1,043,372	1,042,949
Deferred income taxes	0	0
Other long-term liabilities	0	0
Intercompany note payable	0	0
Due to intercompany, net	105,429	101,418
Commitments and contingencies
Total stockholders' equity	3,023,675	2,916,192
Liabilities and Stockholders' Equity, Total	4,174,511	4,062,064
Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	87,644	78,543	68,563	63,458
Receivables, net	647,480	619,229
Inventories	4,218,338	4,126,465
Other current assets	82,726	69,385
Total current assets	5,036,188	4,893,622
Property and equipment, net of accumulated depreciation	1,430,216	1,436,459
Goodwill	943,359	943,359
Intangible assets, net	582,594	595,596
Other assets, net	64,053	63,376
Investment in subsidiaries	390,370	375,420
Intercompany note receivable	0	0
Due from intercompany, net	0	0
Assets, Total	8,446,780	8,307,832
Accounts payable	2,795,980	2,813,937
Accrued expenses	540,074	526,652
Other current liabilities	42,307	32,508
Total current liabilities	3,378,361	3,373,097
Long-term debt	30,000	0
Deferred income taxes	431,097	439,283
Other long-term liabilities	223,830	223,481
Intercompany note payable	1,048,508	1,048,424
Due to intercompany, net	213,815	214,691
Commitments and contingencies
Total stockholders' equity	3,121,169	3,008,856
Liabilities and Stockholders' Equity, Total	8,446,780	8,307,832
Non-Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	38,443	56,635	35,145	27,324
Receivables, net	35,544	22,023
Inventories	195,465	199,403
Other current assets	1,133	1,153
Total current assets	270,585	279,214
Property and equipment, net of accumulated depreciation	9,285	9,753
Goodwill	47,336	47,518
Intangible assets, net	44,380	45,307
Other assets, net	621	773
Investment in subsidiaries	0	0
Intercompany note receivable	0	0
Due from intercompany, net	319,244	316,109
Assets, Total	691,451	698,674
Accounts payable	253,203	272,240
Accrued expenses	21,461	26,312
Other current liabilities	4,852	2,986
Total current liabilities	279,516	301,538
Long-term debt	0	0
Deferred income taxes	19,544	19,633
Other long-term liabilities	2,021	2,083
Intercompany note payable	0	0
Due to intercompany, net	0	0
Commitments and contingencies
Total stockholders' equity	390,370	375,420
Liabilities and Stockholders' Equity, Total	691,451	698,674
Consolidation, Eliminations [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	(22)	(22)	$ (8)	$ (8)
Receivables, net	0	0
Inventories	0	0
Other current assets	(259)	(72)
Total current assets	(281)	(94)
Property and equipment, net of accumulated depreciation	0	0
Goodwill	0	0
Intangible assets, net	0	0
Other assets, net	(4,513)	(4,634)
Investment in subsidiaries	(3,511,539)	(3,384,276)
Intercompany note receivable	(1,048,508)	(1,048,424)
Due from intercompany, net	(319,244)	(316,109)
Assets, Total	(4,884,085)	(4,753,537)
Accounts payable	0	0
Accrued expenses	(259)	(72)
Other current liabilities	(22)	(22)
Total current liabilities	(281)	(94)
Long-term debt	0	0
Deferred income taxes	(4,513)	(4,634)
Other long-term liabilities	0	0
Intercompany note payable	(1,048,508)	(1,048,424)
Due to intercompany, net	(319,244)	(316,109)
Commitments and contingencies
Total stockholders' equity	(3,511,539)	(3,384,276)
Liabilities and Stockholders' Equity, Total	$ (4,884,085)	$ (4,753,537)