Acquisitions and Divestitures - Summary of Fair Value of Acquired Assets and Assumed Liabilities as of Acquisition Date (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Oct. 02, 2017	Oct. 01, 2017	Jan. 01, 2017
Business Acquisition [Line Items]
Goodwill	$ 165,903	$ 169,316		$ 152,701	$ 144,586
Current liabilities (acquisition related contingent consideration)	25,306	23,339
Other liabilities (acquisition related contingent consideration)	$ 338,530	$ 357,952
CCR Exchange Business [Member]
Business Acquisition [Line Items]
Cash			$ 91
Inventories			10,667
Prepaid expenses and other current assets			3,172
Accounts receivable from The Coca-Cola Company			674
Property, plant and equipment			47,484
Other assets (including deferred taxes)			753
Goodwill			3,546
Total acquired assets			149,687
Other current liabilities			3,497
Other liabilities			15
Total assumed liabilities			3,512
Memphis Territory [Member]
Business Acquisition [Line Items]
Cash			100
Inventories			3,354
Prepaid expenses and other current assets			1,087
Accounts receivable from The Coca-Cola Company			563
Property, plant and equipment			21,321
Other assets (including deferred taxes)			547
Goodwill			5,199
Total acquired assets			68,771
Current liabilities (acquisition related contingent consideration)			1,501
Other current liabilities			4,323
Other liabilities (acquisition related contingent consideration)			20,676
Other liabilities			87
Total assumed liabilities			26,587
United Exchange Business [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 Acquisitions [Member]
Business Acquisition [Line Items]
Cash			191
Inventories			14,850
Prepaid expenses and other current assets			4,573
Accounts receivable from The Coca-Cola Company			1,447
Property, plant and equipment			71,589
Other assets (including deferred taxes)			1,300
Goodwill			11,442
Total acquired assets			239,792
Current liabilities (acquisition related contingent consideration)			1,501
Other current liabilities			8,311
Other liabilities (acquisition related contingent consideration)			20,676
Other liabilities			102
Total assumed liabilities			30,590
Distribution Agreements [Member] | CCR Exchange Business [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			80,100
Distribution Agreements [Member] | Memphis Territory [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			35,400
Distribution Agreements [Member] | United Exchange Business [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			13,950
Distribution Agreements [Member] | October 2017 Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			129,450
Customer Lists [Member] | CCR Exchange Business [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			3,200
Customer Lists [Member] | Memphis Territory [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			1,200
Customer Lists [Member] | United Exchange Business [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			550
Customer Lists [Member] | October 2017 Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			$ 4,950