Related Party Transactions - Summary of Significant Transactions between Company and The Coca-Cola Company (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Related Party Transaction [Line Items]
Glacéau distribution agreement consideration				$ 15,598
Cold drink equipment			$ 3,789	8,400
The Coca-Cola Company [Member]
Related Party Transaction [Line Items]
Concentrate, syrup, sweetener and other purchases	$ 341,949	$ 317,040	904,244	806,256
Customer marketing programs	34,005	27,855	110,062	102,095
Cold drink equipment parts	7,958	6,881	22,188	18,968
Glacéau distribution agreement consideration				15,598
Proceeds from Territory Conversion Fee				87,066
Marketing funding support payments	22,632	22,074	65,325	62,235
Fountain delivery and equipment repair fees	10,199	9,286	29,899	26,138
Facilitating the distribution of certain brands and packages to other Coca-Cola bottlers	1,937	1,773	7,663	6,881
Presence marketing funding support on the Company’s behalf	$ 1,108	$ 2,707	6,203	3,844
Cold drink equipment			$ 3,789	$ 8,400