Basic and Diluted Net Income Attributable to PepsiCo (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 13, 2015	Jun. 14, 2014	Jun. 13, 2015	Jun. 14, 2014
Earnings Per Share [Abstract]
Net income attributable to PepsiCo		$ 1,980	$ 1,978	$ 3,201	$ 3,194
Preferred Stock [Abstract]
Redemption premium		(1)	(2)	(2)	(3)
Net income available for PepsiCo common shareholders - Value		$ 1,979	$ 1,976	$ 3,199	$ 3,191
Net income available for PepsiCo common shareholders - Shares	[1]	1,476.0	1,515.0	1,480.0	1,519.0
Basic net income attributable to PepsiCo per common share (in dollars per share)		$ 1.34	$ 1.30	$ 2.16	$ 2.10
Dilutive Securities [Abstract]
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities		$ 0	$ 0	$ 0	$ 0
Stock options and RSUs - Shares	[1],[2]	14.0	16.0	16.0	16.0
ESOP convertible preferred stock - Value		$ 1	$ 2	$ 2	$ 3
ESOP convertible preferred stock - Shares	[1]	1.0	1.0	1.0	1.0
Diluted shares - Value		$ 1,980	$ 1,978	$ 3,201	$ 3,194
Diluted shares - Shares	[1]	1,491.0	1,532.0	1,497.0	1,536.0
Diluted net income attributable to PepsiCo per common share (in dollars per share)		$ 1.33	$ 1.29	$ 2.14	$ 2.08
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		1.6		1.6	0.1
Out-of-the-money options average exercise price		$ 99.25		$ 99.25	$ 82.25

[1] Weighted-average common shares outstanding (in millions).

[2] the 12 and 24 weeks ended June 13, 2015, options to purchase 1.6 million shares were not included in the calculation of diluted earnings per common share because these options were out-of-the-money. These out-of-the-money options had an average exercise price of $99.25. For the 12 weeks ended June 14, 2014, the calculation of diluted earnings per common share was unadjusted because there were no out-of-the-money options during the period. For the 24 weeks ended June 14, 2014, options to purchase 0.1 million shares were not included in the calculation of diluted earnings per common share because these options were out-of-the-money. These out-of-the-money options had an average exercise price of $82.25.