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. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Net income		$ 12,515	$ 4,857	$ 6,329
Dividends				(1)
Redemption premium		(2)	(4)	(5)
Net income available for PepsiCo common shareholders - Value		$ 12,513	$ 4,853	$ 6,323
Net income available for PepsiCo common stockholders - Shares	[1]	1,415	1,425	1,439
Basic net income attributable to PepsiCo per common share		$ 8.84	$ 3.40	$ 4.39
Stock options and RSUs - Shares	[1]	10	12	12
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units		$ 0	$ 0	$ 1
ESOP convertible preferred stock - Value		2	$ 4	$ 5
ESOP convertible preferred stock - Shares	[1]		1	1
Diluted shares - Value		$ 12,515	$ 4,857	$ 6,329
Diluted shares - Shares	[1]	1,425	1,438	1,452
Diluted net income attributable to PepsiCo per common share		$ 8.78	$ 3.38	$ 4.36

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