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Retirement Plans - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Disclosure Retirement Plans Additional Information [Abstract]      
Compensation expense (ESOP) $ 310,050,000us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense $ 292,075,000us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense $ 278,529,000us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense
Period during which the Company is required to purchase the shares at fair value after distribution of the shares from the ESOP, months 15 months    
Distributed shares subject to put option, fair value 243,992,000ck0000081061_EmployeeStockOwnershipPlanPutOptionDistributedSharesFairValue 42,568,000ck0000081061_EmployeeStockOwnershipPlanPutOptionDistributedSharesFairValue  
ESOP, shares cost 2,436,536,000ck0000081061_EmployeeStockOwnershipPlanShareCost 2,280,335,000ck0000081061_EmployeeStockOwnershipPlanShareCost  
Common stock related to ESOP 2,680,528,000us-gaap_TemporaryEquityCarryingAmountAttributableToParent 2,322,903,000us-gaap_TemporaryEquityCarryingAmountAttributableToParent  
ESOP shares, fair value 7,811,906,000us-gaap_EmployeeStockOwnershipPlanESOPFairValueOfSharesSubjectToRepurchaseObligation 7,139,235,000us-gaap_EmployeeStockOwnershipPlanESOPFairValueOfSharesSubjectToRepurchaseObligation  
Maximum contribution percentage of employees' eligible annual compensation 10.00%ck0000081061_MaximumEmployeeContributionTo401kPlanAsPercentageOfAnnualCompensation    
Percentage of company match approved for eligible contributions 50.00%ck0000081061_PercentageOfCompanyMatchApprovedForEligibleContributions 50.00%ck0000081061_PercentageOfCompanyMatchApprovedForEligibleContributions 50.00%ck0000081061_PercentageOfCompanyMatchApprovedForEligibleContributions
Percentage of eligible wages for matching contributions 3.00%ck0000081061_PercentageOfEligibleWagesThatCompanyMatched 3.00%ck0000081061_PercentageOfEligibleWagesThatCompanyMatched 3.00%ck0000081061_PercentageOfEligibleWagesThatCompanyMatched
Maximum amount match per employee 750ck0000081061_MaximumAmountOfMatchingContributionsPerEmployee 750ck0000081061_MaximumAmountOfMatchingContributionsPerEmployee 750ck0000081061_MaximumAmountOfMatchingContributionsPerEmployee
Compensation expenses match to 401(K) plan $ 28,475,000ck0000081061_CompanysFourZeroOneKEmployerMatchExpense $ 26,714,000ck0000081061_CompanysFourZeroOneKEmployerMatchExpense $ 24,957,000ck0000081061_CompanysFourZeroOneKEmployerMatchExpense