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Basic and Diluted Net Income Attributable to PepsiCo (Parenthetical) (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 08, 2012
Sep. 03, 2011
Sep. 08, 2012
Sep. 03, 2011
Earnings Per Share [Abstract]        
Out-of-the-money options excluded from earnings per share 0.6 22.1 13.5 21.2
Out-of-the-money options average exercise price $ 72.26 $ 67.67 $ 67.51 $ 67.46