Restructuring and Impairment Charges Restructuring and Impairment Charges (Summary of 2014 Productivity Plan Charges) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Jun. 16, 2018	Jun. 15, 2019	Jun. 16, 2018
Restructuring Cost and Reserve [Line Items]
Cash payments		$ 153	$ 126
2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		1,300
Restructuring and Related Cost, Expected Cash Expenditures		960
Cash payments		$ 89
Restructuring Charges	$ 32		$ 44
Net income attributable to PepsiCo per common share	$ 0.02		$ 0.02
2014 Productivity Plan [Member] | Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 32		$ 40
2014 Productivity Plan [Member] | Other pension and retiree medical benefits income (a)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		4
2014 Productivity Plan [Member] | After-tax amount
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	24		35
Frito Lay North America [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	4		9
Quaker Foods North America [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		1
PepsiCo Beverages North America [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	9		12
Latin America [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3		12
Europe Sub-Saharan Africa [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	4		8
Asia, Middle East and North Africa [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	2		4
Employee Severance [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	21		24
Asset Impairment [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	4		8
Other Restructuring [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	7		12
Corporate Unallocated [Member] | 2014 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 10		$ (2)