Net Income Attributable to PepsiCo per Common Share (Basic and Diluted Net Income Attributable to PepsiCo per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Earnings Per Share [Abstract]
Net income		$ 4,857	$ 6,329	$ 5,452
Dividends			(1)	(1)
Redemption premium		(4)	(5)	(5)
Net income available for PepsiCo common shareholders - Value		$ 4,853	$ 6,323	$ 5,446
Net income available for PepsiCo common stockholders - Shares	[1]	1,425	1,439	1,469
Basic net income attributable to PepsiCo per common share		$ 3.40	$ 4.39	$ 3.71
Stock options and RSUs - Shares	[1]	12	12	15
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units		$ 0	$ 1	$ 0
ESOP convertible preferred stock - Value		$ 4	$ 5	$ 6
ESOP convertible preferred stock - Shares	[1]	1	1	1
Diluted shares - Value		$ 4,857	$ 6,329	$ 5,452
Diluted shares - Shares	[1]	1,438	1,452	1,485
Diluted net income attributable to PepsiCo per common share		$ 3.38	$ 4.36	$ 3.67

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