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. 17, 2017	Jun. 11, 2016	Jun. 17, 2017	Jun. 11, 2016
Earnings Per Share [Abstract]
Net income attributable to PepsiCo		$ 2,105	$ 2,005	$ 3,423	$ 2,936
Preferred Stock [Abstract]
Redemption premium		0	(1)	(2)	(2)
Net income available for PepsiCo common shareholders - Value		$ 2,105	$ 2,004	$ 3,421	$ 2,934
Net income available for PepsiCo common shareholders - Shares	[1]	1,428	1,443	1,428	1,445
Basic net income attributable to PepsiCo per common share (in dollars per share)		$ 1.47	$ 1.39	$ 2.40	$ 2.03
Dilutive Securities [Abstract]
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities		$ 0	$ 0	$ 0	$ 0
Stock options and RSUs - Shares	[1]	12	12	12	12
ESOP convertible preferred stock - Value			$ 1	$ 2	$ 2
ESOP convertible preferred stock - Shares	[1]	1	1	1	1
Diluted shares - Shares	[1]	1,441	1,456	1,441	1,458
Diluted net income attributable to PepsiCo per common share (in dollars per share)		$ 1.46	$ 1.38	$ 2.38	$ 2.01

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