Restructuring and Impairment Charges (Summary of 2019 Productivity Plan Charges) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	$ 1	$ (1)	$ (2)
Cash payments for restructuring charges	(256)	(255)	(350)
2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Beginning Balance	127	149	106
Restructuring and impairment charges	247	289	370
Cash payments for restructuring charges	(256)	(255)	(257)
Non-cash charges and translation	(47)	(56)	(70)
Ending Balance	$ 71	$ 127	$ 149
Impact on net income attributable to PepsiCo per common share	$ (0.15)	$ (0.17)	$ (0.21)
Plan to Date through 12/25/2021	$ 1,044
Cash payments reported on the cash flow statement in pension and retiree medical contributions	2	$ 2	$ 4
Frito Lay North America [Member] | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	28	83	22
Plan to Date through 12/25/2021	164
Quaker Foods North America [Member] | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	0	5	2
Plan to Date through 12/25/2021	12
PepsiCo Beverages North America [Member] | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	20	47	51
Plan to Date through 12/25/2021	158
Africa, Middle East and South Asia [Member] | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	15	14	38
Plan to Date through 12/25/2021	70
Asia Pacific, Australia and New Zealand, and China Region [Member] | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	7	5	47
Plan to Date through 12/25/2021	61
Latin America | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	37	31	62
Plan to Date through 12/25/2021	139
Europe | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	81	48	99
Plan to Date through 12/25/2021	234
Severance and Other Employee Costs | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Beginning Balance	122	128	105
Restructuring and impairment charges	120	158	149
Cash payments for restructuring charges	(163)	(138)	(138)
Non-cash charges and translation	(15)	(26)	12
Ending Balance	64	122	128
Plan to Date through 12/25/2021	564
Asset Impairments | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Beginning Balance	0	0	0
Restructuring and impairment charges	32	33	92
Cash payments for restructuring charges	0	0	0
Non-cash charges and translation	(32)	(33)	(92)
Ending Balance	0	0	0
Plan to Date through 12/25/2021	157
Other Costs | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Beginning Balance	5	21	1
Restructuring and impairment charges	95	98	129
Cash payments for restructuring charges	(93)	(117)	(119)
Non-cash charges and translation	0	3	10
Ending Balance	7	5	21
Plan to Date through 12/25/2021	323
Cost of sales | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	29	30	115
Selling, general and administrative expenses | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	208	239	253
Other pension and retiree medical benefits expense | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	10	20	2
Plan to Date through 12/25/2021	67
After-tax amount | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	206	231	303
Restructuring, Settlement and Impairment Provisions, less Other pension and retiree medical benefits expense [Member] | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	237	269	368
Plan to Date through 12/25/2021	977
Corporate | 2019 Productivity Plan [Member]
Total Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	49	$ 36	$ 47
Plan to Date through 12/25/2021	$ 139