Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Jul. 15, 2017	Dec. 31, 2016	Jul. 16, 2016	Jan. 02, 2016
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 257,230	$ 135,178	$ 104,827	$ 90,782
Receivables, net	680,503	641,252
Inventories	4,293,367	4,325,868
Other current assets	95,115	70,466
Total current assets	5,326,215	5,172,764
Property and equipment, net of accumulated depreciation	1,431,294	1,446,340
Goodwill	993,916	990,877
Intangible assets, net	618,879	640,903
Other assets, net	67,109	64,149
Investment in subsidiaries	0	0
Intercompany note receivable	0	0
Due from intercompany, net	0	0
Assets, Total	8,437,413	8,315,033
Accounts payable	2,937,096	3,086,177
Accrued expenses	629,088	554,397
Other current liabilities	32,143	35,472
Total current liabilities	3,598,327	3,676,046
Long-term debt	1,043,690	1,042,949
Deferred income taxes	438,782	454,282
Other long-term liabilities	228,337	225,564
Intercompany note payable	0	0
Due to intercompany, net	0	0
Commitments and contingencies
Total stockholders' equity	3,128,277	2,916,192
Liabilities and Stockholders' Equity, Total	8,437,413	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	137	0
Total current assets	159	22
Property and equipment, net of accumulated depreciation	114	128
Goodwill	0	0
Intangible assets, net	0	0
Other assets, net	4,928	4,634
Investment in subsidiaries	3,227,142	3,008,856
Intercompany note receivable	1,048,572	1,048,424
Due from intercompany, net	0	0
Assets, Total	4,280,915	4,062,064
Accounts payable	0	0
Accrued expenses	2,600	1,505
Other current liabilities	0	0
Total current liabilities	2,600	1,505
Long-term debt	1,043,690	1,042,949
Deferred income taxes	0	0
Other long-term liabilities	0	0
Intercompany note payable	0	0
Due to intercompany, net	106,349	101,418
Commitments and contingencies
Total stockholders' equity	3,128,276	2,916,192
Liabilities and Stockholders' Equity, Total	4,280,915	4,062,064
Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	215,753	78,543	82,871	63,458
Receivables, net	640,204	619,229
Inventories	4,090,863	4,126,465
Other current assets	94,769	69,385
Total current assets	5,041,589	4,893,622
Property and equipment, net of accumulated depreciation	1,421,231	1,436,459
Goodwill	943,359	943,359
Intangible assets, net	572,134	595,596
Other assets, net	66,396	63,376
Investment in subsidiaries	424,917	375,420
Intercompany note receivable	0	0
Due from intercompany, net	0	0
Assets, Total	8,469,626	8,307,832
Accounts payable	2,694,002	2,813,937
Accrued expenses	603,599	526,652
Other current liabilities	27,893	32,508
Total current liabilities	3,325,494	3,373,097
Long-term debt	0	0
Deferred income taxes	423,933	439,283
Other long-term liabilities	226,203	223,481
Intercompany note payable	1,048,572	1,048,424
Due to intercompany, net	218,282	214,691
Commitments and contingencies
Total stockholders' equity	3,227,142	3,008,856
Liabilities and Stockholders' Equity, Total	8,469,626	8,307,832
Non-Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	41,477	56,635	21,956	27,324
Receivables, net	40,299	22,023
Inventories	202,504	199,403
Other current assets	456	1,153
Total current assets	284,736	279,214
Property and equipment, net of accumulated depreciation	9,949	9,753
Goodwill	50,557	47,518
Intangible assets, net	46,745	45,307
Other assets, net	712	773
Investment in subsidiaries	0	0
Intercompany note receivable	0	0
Due from intercompany, net	324,631	316,109
Assets, Total	717,330	698,674
Accounts payable	243,094	272,240
Accrued expenses	23,136	26,312
Other current liabilities	4,272	2,986
Total current liabilities	270,502	301,538
Long-term debt	0	0
Deferred income taxes	19,777	19,633
Other long-term liabilities	2,134	2,083
Intercompany note payable		0
Due to intercompany, net	0	0
Commitments and contingencies
Total stockholders' equity	424,917	375,420
Liabilities and Stockholders' Equity, Total	717,330	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	(247)	(72)
Total current assets	(269)	(94)
Property and equipment, net of accumulated depreciation	0	0
Goodwill	0	0
Intangible assets, net	0	0
Other assets, net	(4,927)	(4,634)
Investment in subsidiaries	(3,652,059)	(3,384,276)
Intercompany note receivable	(1,048,572)	(1,048,424)
Due from intercompany, net	(324,631)	(316,109)
Assets, Total	(5,030,458)	(4,753,537)
Accounts payable	0	0
Accrued expenses	(247)	(72)
Other current liabilities	(22)	(22)
Total current liabilities	(269)	(94)
Long-term debt	0	0
Deferred income taxes	(4,928)	(4,634)
Other long-term liabilities	0	0
Intercompany note payable	(1,048,572)	(1,048,424)
Due to intercompany, net	(324,631)	(316,109)
Commitments and contingencies
Total stockholders' equity	(3,652,058)	(3,384,276)
Liabilities and Stockholders' Equity, Total	$ (5,030,458)	$ (4,753,537)