Related Party Transactions - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 27, 2015 USD ($)	Sep. 28, 2014 USD ($)	Sep. 27, 2015 USD ($) Entity	Sep. 28, 2014 USD ($)	Jun. 28, 2015 USD ($)	Dec. 29, 2014 USD ($)	Dec. 28, 2014 USD ($)	Jun. 29, 2014 USD ($)	Dec. 30, 2013 USD ($)
Related Party Transaction [Line Items]
Gain on sale of business	$ 22,651,000	$ 0	$ 22,651,000	$ 0
Contingent consideration liability	93,064,000	13,000,000	93,064,000	13,000,000	$ 94,068,000	$ 46,850,000		$ 13,000,000	$ 0
Accounts receivable from CCBSS	42,349,000	33,074,000	$ 42,349,000	33,074,000			$ 22,741,000
Number of entities in which reporting entity is shareholder and purchases majority plastic bottles | Entity			2
Principal balance outstanding under capital lease	57,500,000		$ 57,500,000
CCR [Member]
Related Party Transaction [Line Items]
Asset exchange agreement			Oct. 17, 2014
Acquisition Closing Date			May 01, 2015
CCR [Member] | Tum-E Yummies [Member]
Related Party Transaction [Line Items]
Sales to related parties			$ 14,800,000	17,400,000
CCR [Member] | Transportation [Member]
Related Party Transaction [Line Items]
Sales to related parties			11,300,000	1,600,000
CCR [Member] | Production Agreement [Member]
Related Party Transaction [Line Items]
Sales to related parties			24,200,000	45,300,000
Purchases from related party			154,400,000	44,000,000
CCR [Member] | Comprehensive Beverage Agreement [Member]
Related Party Transaction [Line Items]
Contingent consideration liability	$ 93,100,000		93,100,000
Payments to related party			$ 2,400,000	0
Coca-Cola Company [Member]
Related Party Transaction [Line Items]
Percentage of interest held in outstanding common stock by The Coca-Cola Company	34.80%		34.80%
Voting power of stock held by The Coca-Cola Company	5.00%		5.00%
Purchases from related party			$ 360,200,000	329,100,000
Coca-Cola Company [Member] | Tum-E Yummies [Member]
Related Party Transaction [Line Items]
Gain on sale of business	$ 22,700,000
CCBSS [Member]
Related Party Transaction [Line Items]
Payments to CCBSS as administration fees for its services			500,000	300,000
Accounts receivable from CCBSS	6,500,000	6,300,000	6,500,000	6,300,000			4,500,000
SAC [Member]
Related Party Transaction [Line Items]
Sales to related parties			6,100,000	5,800,000
Purchases from related party			107,200,000	101,400,000
Management fees earned from SAC			1,400,000	1,300,000
Related party debt guarantee	22,700,000		22,700,000
Equity investment	4,100,000	4,100,000	4,100,000	4,100,000			4,100,000
Southeastern [Member]
Related Party Transaction [Line Items]
Purchases from related party			55,300,000	59,900,000
Related party debt guarantee	10,200,000		10,200,000
Equity investment	18,300,000	$ 18,400,000	18,300,000	18,400,000			$ 18,400,000
SAC and Southeastern [Member]
Related Party Transaction [Line Items]
Collateral assets held against Southeastern or SAC guarantees	0		0
Impairment of investments			$ 0	0
HLP, SPC & Adjacent Sales Facility [Member]
Related Party Transaction [Line Items]
Lease expiration date			Dec. 31, 2020
Principal balance outstanding under capital lease	18,100,000		$ 18,100,000
Rental payments related to the lease			$ 2,900,000	2,800,000
Beacon [Member]
Related Party Transaction [Line Items]
Lease expiration date			Dec. 31, 2021
Principal balance outstanding under capital lease	$ 18,800,000		$ 18,800,000
Rental payments related to the lease			$ 3,200,000	$ 3,100,000