Net Income Attributable to PepsiCo per Common Share Out-of-the-money options excluded from the calculation of diluted earnings per common share (Details) - $ / shares		3 Months Ended		8 Months Ended
		Sep. 08, 2018	Sep. 09, 2017	Sep. 08, 2018	Sep. 09, 2017
Out-of-the-money options [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	[1]	0.1	0.0	1.0	0.5
Antidilutive Securities Excluded From Computation Of Earnings Per Share, Average Exercise per Share Amount		$ 115.75	$ 0	$ 109.63	$ 109.69

[1] In millions.