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Net Income Attributable to PepsiCo per Common Share (Narrative) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Earnings Per Share [Abstract]      
Out-of-the-money options excluded from earnings per share   0.6us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 9.6us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Out-of-the-money options average exercise price $ 82.25pep_OutOfMoneyOptionsAverageExercisePrice $ 75.69pep_OutOfMoneyOptionsAverageExercisePrice $ 67.64pep_OutOfMoneyOptionsAverageExercisePrice