Acquisitions and Divestitures - Summary of Fair Value of Acquired Assets and Assumed Liabilities of System Transformation Transactions that Closed during 2017, as of Acquisition Date (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Oct. 02, 2017	Oct. 01, 2017	Apr. 28, 2017	Mar. 31, 2017	Jan. 27, 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
Anderson, Fort Wayne, Lafayette, South Bend and Terre Haute, Indiana Expansion Territories Acquisitions [Member]
Business Acquisition [Line Items]
Cash							$ 107
Inventories							5,953
Prepaid expenses and other current assets							1,155
Accounts receivable from The Coca-Cola Company							1,042
Property, plant and equipment							25,708
Other assets (including deferred taxes)							1,158
Goodwill							1,544
Total acquired assets							60,167
Current liabilities (acquisition related contingent consideration)							1,350
Other current liabilities							324
Other liabilities (acquisition related contingent consideration)							26,377
Other liabilities							43
Total assumed liabilities							28,094
Bloomington and Indianapolis, Indiana and Columbus and Mansfield, Ohio regional manufacturing facilities and Indianapolis and Portland, Indiana Expansion Facilities Acquisitions [Member]
Business Acquisition [Line Items]
Cash						$ 211
Inventories						20,952
Prepaid expenses and other current assets						5,117
Accounts receivable from The Coca-Cola Company						1,807
Property, plant and equipment						81,638
Other assets (including deferred taxes)						3,227
Goodwill						2,527
Total acquired assets						163,979
Current liabilities (acquisition related contingent consideration)						2,958
Other current liabilities						3,760
Other liabilities (acquisition related contingent consideration)						49,739
Other liabilities						2,953
Total assumed liabilities						59,410
Akron, Elyria, Toledo, Willoughby and Youngstown, Ohio Distribution Territories and Twinsburg, Ohio Regional Manufacturing Facility Acquisition [Member]
Business Acquisition [Line Items]
Cash					$ 103
Inventories					14,554
Prepaid expenses and other current assets					4,068
Accounts receivable from The Coca-Cola Company					2,552
Property, plant and equipment					52,263
Other assets (including deferred taxes)					3,960
Goodwill					16,941
Total acquired assets					114,941
Current liabilities (acquisition related contingent consideration)					1,475
Other current liabilities					2,860
Other liabilities (acquisition related contingent consideration)					25,616
Other liabilities					1,792
Total assumed liabilities					31,743
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
2017 System Transformation Transactions Acquisitions [Member]
Business Acquisition [Line Items]
Cash		612
Inventories		56,309
Prepaid expenses and other current assets		14,913
Accounts receivable from The Coca-Cola Company		6,848
Property, plant and equipment		231,198
Other assets (including deferred taxes)		9,645
Goodwill		32,454
Total acquired assets		578,879
Current liabilities (acquisition related contingent consideration)		7,284
Other current liabilities		15,255
Other liabilities (acquisition related contingent consideration)		122,408
Other liabilities		4,890
Total assumed liabilities		149,837
Distribution Agreements [Member] | Anderson, Fort Wayne, Lafayette, South Bend and Terre Haute, Indiana Expansion Territories Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets							22,000
Distribution Agreements [Member] | Bloomington and Indianapolis, Indiana and Columbus and Mansfield, Ohio regional manufacturing facilities and Indianapolis and Portland, Indiana Expansion Facilities Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets						46,750
Distribution Agreements [Member] | Akron, Elyria, Toledo, Willoughby and Youngstown, Ohio Distribution Territories and Twinsburg, Ohio Regional Manufacturing Facility Acquisition [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets					19,500
Distribution Agreements [Member] | October 2017 Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			129,450
Distribution Agreements [Member] | 2017 System Transformation Transactions Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		217,700
Customer Lists [Member] | Anderson, Fort Wayne, Lafayette, South Bend and Terre Haute, Indiana Expansion Territories Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets							$ 1,500
Customer Lists [Member] | Bloomington and Indianapolis, Indiana and Columbus and Mansfield, Ohio regional manufacturing facilities and Indianapolis and Portland, Indiana Expansion Facilities Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets						$ 1,750
Customer Lists [Member] | Akron, Elyria, Toledo, Willoughby and Youngstown, Ohio Distribution Territories and Twinsburg, Ohio Regional Manufacturing Facility Acquisition [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets					$ 1,000
Customer Lists [Member] | October 2017 Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets			$ 4,950
Customer Lists [Member] | 2017 System Transformation Transactions Acquisitions [Member]
Business Acquisition [Line Items]
Other identifiable intangible assets		$ 9,200