Acquisitions and Divestitures - Summary of Acquired Assets and Assumed Liabilities as of Acquisition Date (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Oct. 02, 2017	Jan. 01, 2017	Jan. 03, 2016
Business Acquisition [Line Items]
Goodwill	$ 169,316		$ 144,586	$ 117,954
Current liabilities (acquisition related contingent consideration)	23,339		15,782
Other liabilities (acquisition related contingent consideration)	$ 357,952		$ 237,655
CCR Exchange Transaction Acquisitions [Member]
Business Acquisition [Line Items]
Cash		$ 91
Inventories		10,667
Prepaid expenses and other current assets		3,218
Accounts receivable from The Coca-Cola Company		1,092
Property, plant and equipment		47,066
Other assets (including deferred taxes)		624
Goodwill		6,378
Total acquired assets		152,836
Other current liabilities		2,760
Other liabilities		1
Total assumed liabilities		2,761
Memphis Transaction [Member]
Business Acquisition [Line Items]
Cash		100
Inventories		3,354
Prepaid expenses and other current assets		1,222
Accounts receivable from The Coca-Cola Company		1,089
Property, plant and equipment		20,795
Other assets (including deferred taxes)		265
Goodwill		4,917
Total acquired assets		63,242
Current liabilities (acquisition related contingent consideration)		1,458
Other current liabilities		3,241
Other liabilities (acquisition related contingent consideration)		18,848
Other liabilities		94
Total assumed liabilities		23,641
United Exchange Transaction Acquisitions [Member]
Business Acquisition [Line Items]
Inventories		829
Prepaid expenses and other current assets		314
Accounts receivable from The Coca-Cola Company		210
Property, plant and equipment		2,784
Goodwill		2,697
Total acquired assets		21,334
Other current liabilities		491
Total assumed liabilities		491
October 2017 Transactions Acquisitions [Member]
Business Acquisition [Line Items]
Cash		191
Inventories		14,850
Prepaid expenses and other current assets		4,754
Accounts receivable from The Coca-Cola Company		2,391
Property, plant and equipment		70,645
Other assets (including deferred taxes)		889
Goodwill		13,992
Total acquired assets		237,412
Current liabilities (acquisition related contingent consideration)		1,458
Other current liabilities		6,492
Other liabilities (acquisition related contingent consideration)		18,848
Other liabilities		95
Total assumed liabilities		26,893
Distribution Agreements [Member] | CCR Exchange Transaction Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		80,500
Distribution Agreements [Member] | Memphis Transaction [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		30,300
Distribution Agreements [Member] | United Exchange Transaction Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		13,950
Distribution Agreements [Member] | October 2017 Transactions Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		124,750
Customer Lists [Member] | CCR Exchange Transaction Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		3,200
Customer Lists [Member] | Memphis Transaction [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		1,200
Customer Lists [Member] | United Exchange Transaction Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		550
Customer Lists [Member] | October 2017 Transactions Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		$ 4,950