Restructuring and Impairment Charges (Summary of 2019 Productivity Plan Charges) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		8 Months Ended
	Sep. 04, 2021	Sep. 05, 2020	Sep. 04, 2021	Sep. 05, 2020
Restructuring Cost and Reserve [Line Items]
Cash payments			$ (165)	$ (166)
2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Liability as of December 26, 2020			127
Restructuring Charges	$ 52	$ 61	129	$ 124
Cash payments			(165)
Non-cash charges and translation			(14)
Liability as of September 4, 2021	$ 77		$ 77
Net income attributable to PepsiCo per common share	$ (0.03)	$ (0.03)	$ (0.08)	$ (0.07)
Restructuring and Related Cost, Cost Incurred to Date	$ 926		$ 926
Cash payments reported on the cash flow statement in pension and retiree medical contributions			2
2019 Productivity Plan [Member] | Frito Lay North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	2	$ 2	20	$ 9
Restructuring and Related Cost, Cost Incurred to Date	156		156
2019 Productivity Plan [Member] | Quaker Foods North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1	0	1	1
Restructuring and Related Cost, Cost Incurred to Date	13		13
2019 Productivity Plan [Member] | PepsiCo Beverages North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	3	29	8	32
Restructuring and Related Cost, Cost Incurred to Date	146		146
2019 Productivity Plan [Member] | Africa, Middle East and South Asia [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	5	2	9	9
Restructuring and Related Cost, Cost Incurred to Date	64		64
2019 Productivity Plan [Member] | Asia Pacific, Australia and New Zealand, and China Region [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1	1	2	4
Restructuring and Related Cost, Cost Incurred to Date	56		56
2019 Productivity Plan [Member] | Latin America (Segment)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	14	5	22	14
Restructuring and Related Cost, Cost Incurred to Date	124		124
2019 Productivity Plan [Member] | Europe (Segment)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	20	13	46	29
Restructuring and Related Cost, Cost Incurred to Date	199		199
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	8	15	18
Restructuring and Related Cost, Cost Incurred to Date	105		105
Severance and Other Employee Costs | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Liability as of December 26, 2020			122
Restructuring Charges	28	23	77	47
Cash payments			(119)
Non-cash charges and translation			(8)
Liability as of September 4, 2021	72		72
Restructuring and Related Cost, Cost Incurred to Date	521		521
Asset Impairments | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Liability as of December 26, 2020			0
Restructuring Charges	3	15	4	20
Cash payments			0
Non-cash charges and translation			(4)
Liability as of September 4, 2021	0		0
Restructuring and Related Cost, Cost Incurred to Date	129		129
Other Costs | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Liability as of December 26, 2020			5
Restructuring Charges	21	23	48	57
Cash payments			(46)
Non-cash charges and translation			(2)
Liability as of September 4, 2021	5		5
Restructuring and Related Cost, Cost Incurred to Date	276		276
Cost of sales | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	9	1	13	4
Selling, general and administrative expenses | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	42	59	110	112
Other pension and retiree medical benefits expense | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1	1	6	8
Restructuring and Related Cost, Cost Incurred to Date	63		63
After-tax amount | 2019 Productivity Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	45	48	109	101
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	51	$ 60	123	$ 116
Restructuring and Related Cost, Cost Incurred to Date	$ 863		$ 863