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. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Earnings Per Share [Abstract]
Net income	$ 7,618	$ 7,120	$ 7,314
Net income available for PepsiCo common shareholders - Value	$ 7,618	$ 7,120	$ 7,314
Net income available for PepsiCo common stockholders - Shares	1,382	1,385	1,399
Basic net income attributable to PepsiCo per common share	$ 5.51	$ 5.14	$ 5.23
Stock options and RSUs - Shares	7	7	8
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 0	$ 0	$ 0
Diluted shares - Value	$ 7,618	$ 7,120	$ 7,314
Diluted shares - Shares	1,389	1,392	1,407
Diluted net income attributable to PepsiCo per common share	$ 5.49	$ 5.12	$ 5.20