Restructuring and Impairment Charges (Summary of 2019 Productivity Plan Charges) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 19, 2022	Mar. 20, 2021
Restructuring Cost and Reserve [Line Items]
Cash payments	$ (32)	$ (49)
2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Liability as of December 25, 2021	71
Restructuring Charges	27	$ 43
Cash payments	(32)
Liability as of March 19, 2022	$ 66
Impact on net income attributable to PepsiCo per common share	$ (0.02)	$ (0.03)
Restructuring and Related Cost, Cost Incurred to Date	$ 1,071
2019 Productivity Plan [Member] | Frito Lay North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3	$ 15
Restructuring and Related Cost, Cost Incurred to Date	167
2019 Productivity Plan [Member] | Quaker Foods North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	0
Restructuring and Related Cost, Cost Incurred to Date	12
2019 Productivity Plan [Member] | PepsiCo Beverages North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3	4
Restructuring and Related Cost, Cost Incurred to Date	161
2019 Productivity Plan [Member] | Africa, Middle East and South Asia [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	2	1
Restructuring and Related Cost, Cost Incurred to Date	72
2019 Productivity Plan [Member] | Asia Pacific, Australia and New Zealand, and China Region [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1	0
Restructuring and Related Cost, Cost Incurred to Date	62
2019 Productivity Plan [Member] | Latin America (Segment)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	6	2
Restructuring and Related Cost, Cost Incurred to Date	145
2019 Productivity Plan [Member] | Europe (Segment)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	7	11
Restructuring and Related Cost, Cost Incurred to Date	241
Other than 2019 Productivity Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0
Corporate Unallocated [Member] | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	5	4
Restructuring and Related Cost, Cost Incurred to Date	144
Severance and Other Employee Costs | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Liability as of December 25, 2021	64
Restructuring Charges	11	34
Cash payments	(16)
Liability as of March 19, 2022	59
Restructuring and Related Cost, Cost Incurred to Date	575
Asset Impairments | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	0
Restructuring and Related Cost, Cost Incurred to Date	157
Other Costs | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Liability as of December 25, 2021	7
Restructuring Charges	16	9
Cash payments	(16)
Liability as of March 19, 2022	7
Restructuring and Related Cost, Cost Incurred to Date	339
Cost of sales | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	5	2
Selling, General and Administrative Expenses [Member] | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	22	35
Other pension and retiree medical benefits expense | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	6
Restructuring and Related Cost, Cost Incurred to Date	67
After-tax amount | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	21	35
Restructuring, Settlement and Impairment Provisions, less Other pension and retiree medical benefits expense [Member] | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	27	$ 37
Restructuring and Related Cost, Cost Incurred to Date	$ 1,004