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Piedmont Coca-Cola Bottling Partnership - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Dec. 31, 2017
Minority Interest [Line Items]      
Noncontrolling interest income $ 7,185,000 $ 4,774,000 $ 6,312,000
Noncontrolling interest 104,164,000 $ 96,979,000  
Piedmont Coca-Cola Bottling Partnership [Member] | Financing Agreement Provided from Company to Piedmont [Member]      
Minority Interest [Line Items]      
Finance under financial agreement $ 100,000,000.0    
Financial agreement expiration date Dec. 31, 2020    
Automatic renewal period of financial agreement 1 year    
Period of prior written notice for cancellation 10 days    
Subsidiary's intercompany interest rate over the Company's average rate 0.50%    
Amounts outstanding under financing agreement with subsidiary $ 0    
Piedmont Coca-Cola Bottling Partnership [Member]      
Minority Interest [Line Items]      
Minority interest 22.70% 22.70% 22.70%
Piedmont Coca-Cola Bottling Partnership [Member] | Financing Agreement Provided form Piedmont to Company [Member]      
Minority Interest [Line Items]      
Financial agreement expiration date Dec. 31, 2022    
Automatic renewal period of financial agreement 1 year    
Financing under agreement $ 200,000,000.0    
Revolving loan agreement maturity period 30 days    
Interest rate percentage over revolving loan agreement 1.74%    
Amount outstanding under financing agreement from subsidiary $ 163,300,000