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		6 Months Ended
		Jun. 16, 2018	Jun. 17, 2017	Jun. 16, 2018	Jun. 17, 2017
Out-of-the-money options [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	[1]	2.8	0.0	1.4	0.7
Antidilutive Securities Excluded From Computation Of Earnings Per Share, Average Exercise per Share Amount		$ 109.28	$ 0	$ 112.52	$ 109.69

[1] In millions.