Basic and Diluted Net Income Attributable to PepsiCo (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		8 Months Ended
	Sep. 04, 2021	Sep. 05, 2020	Sep. 04, 2021	Sep. 05, 2020
Preferred Stock [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic	$ 2,224	$ 2,291	$ 6,296	$ 5,275
Weighted Average Number of Shares Outstanding, Basic	1,382	1,384	1,381	1,387
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	7	6	7	6
Net Income (Loss) Attributable to Parent	$ 2,224	$ 2,291	$ 6,296	$ 5,275
Earnings Per Share, Basic	$ 1.61	$ 1.66	$ 4.56	$ 3.80
Dilutive Securities [Abstract]
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 0	$ 0	$ 0	$ 0
Net Income (Loss) Available to Common Stockholders, Diluted	$ 2,224	$ 2,291	$ 6,296	$ 5,275
Weighted Average Number of Shares Outstanding, Diluted	1,389	1,390	1,388	1,393
Earnings Per Share, Diluted	$ 1.60	$ 1.65	$ 4.54	$ 3.79