Segment Reporting Information by Net Revenue and Operating Profit (Detail) - USD ($) $ in Millions	3 Months Ended		8 Months Ended
	Sep. 05, 2020	Sep. 07, 2019	Sep. 05, 2020	Sep. 07, 2019
Segment Reporting Information [Line Items]
Net Revenue	$ 18,091	$ 17,188	$ 47,917	$ 46,521
Operating Profit	$ 3,011	$ 2,855	$ 7,254	$ 7,592
Disaggregation of Net Revenue - Beverages	45.00%	50.00%	45.00%	45.00%
Disaggregation of Net Revenue - Food/Snack	55.00%	50.00%	55.00%	55.00%
Disaggregation of beverage revenue from company-owned bottlers	40.00%	40.00%	40.00%	40.00%
Charges Related to Novel Coronavirus (COVID-19)	$ 147		$ 668
Reserve for Product Returns Novel Coronavirus (COVID-19) Impact	3		19
Accounts Receivable, Credit Loss Expense (reversal) Novel Coronavirus (COVID-19) Impact	4		76
Prepaid Incentives Novel Coronavirus (COVID-19 ) Impact	1		48
Inventory Write-down and Product Returns Novel Coronavirus (COVID-19) Impact	10		64
Employee Compensation Expense Novel Coronavirus (COVID-19) Impact	62		286
Employee Protection Costs Novel Coronavirus (COVID-19) Impact	44		130
Charges Related to Novel Coronavirus (COVID-19) Impact - Other	26		64
Social Welfare Credit Novel Coronavirus (COVID-19) Impact	7		7
Frito Lay North America [Member]
Segment Reporting Information [Line Items]
Net Revenue	4,399	$ 4,105	12,746	$ 11,930
Operating Profit	1,353	1,286	3,833	3,694
Charges Related to Novel Coronavirus (COVID-19)	41		203
Accounts Receivable, Credit Loss Expense (reversal) Novel Coronavirus (COVID-19) Impact	0		19
Prepaid Incentives Novel Coronavirus (COVID-19 ) Impact	0		0
Inventory Write-down and Product Returns Novel Coronavirus (COVID-19) Impact	1		8
Employee Compensation Expense Novel Coronavirus (COVID-19) Impact	24		124
Employee Protection Costs Novel Coronavirus (COVID-19) Impact	16		49
Charges Related to Novel Coronavirus (COVID-19) Impact - Other	0		3
Quaker Foods North America [Member]
Segment Reporting Information [Line Items]
Net Revenue	608	576	1,906	1,710
Operating Profit	145	126	491	391
Charges Related to Novel Coronavirus (COVID-19)	3		12
Accounts Receivable, Credit Loss Expense (reversal) Novel Coronavirus (COVID-19) Impact	0		2
Prepaid Incentives Novel Coronavirus (COVID-19 ) Impact	0		0
Inventory Write-down and Product Returns Novel Coronavirus (COVID-19) Impact	0		0
Employee Compensation Expense Novel Coronavirus (COVID-19) Impact	1		7
Employee Protection Costs Novel Coronavirus (COVID-19) Impact	1		2
Charges Related to Novel Coronavirus (COVID-19) Impact - Other	1		1
PepsiCo Beverages North America [Member]
Segment Reporting Information [Line Items]
Net Revenue	5,958	5,643	15,766	15,475
Operating Profit	697	640	1,391	1,719
Charges Related to Novel Coronavirus (COVID-19)	50		295
Accounts Receivable, Credit Loss Expense (reversal) Novel Coronavirus (COVID-19) Impact	3		48
Prepaid Incentives Novel Coronavirus (COVID-19 ) Impact	0		46
Inventory Write-down and Product Returns Novel Coronavirus (COVID-19) Impact	1		30
Employee Compensation Expense Novel Coronavirus (COVID-19) Impact	14		98
Employee Protection Costs Novel Coronavirus (COVID-19) Impact	12		43
Charges Related to Novel Coronavirus (COVID-19) Impact - Other	20		30
Latin America [Member]
Segment Reporting Information [Line Items]
Net Revenue	1,654	1,904	4,531	5,031
Operating Profit	$ 250	$ 277	$ 700	$ 785
Disaggregation of Net Revenue - Beverages	10.00%	10.00%	10.00%	10.00%
Disaggregation of Net Revenue - Food/Snack	90.00%	90.00%	90.00%	90.00%
Charges Related to Novel Coronavirus (COVID-19)	$ 32		$ 66
Accounts Receivable, Credit Loss Expense (reversal) Novel Coronavirus (COVID-19) Impact	0		1
Prepaid Incentives Novel Coronavirus (COVID-19 ) Impact	0		0
Inventory Write-down and Product Returns Novel Coronavirus (COVID-19) Impact	6		12
Employee Compensation Expense Novel Coronavirus (COVID-19) Impact	19		35
Employee Protection Costs Novel Coronavirus (COVID-19) Impact	6		14
Charges Related to Novel Coronavirus (COVID-19) Impact - Other	1		4
Europe [Member]
Segment Reporting Information [Line Items]
Net Revenue	3,323	$ 3,222	7,887	$ 7,842
Operating Profit	$ 480	$ 455	$ 977	$ 909
Disaggregation of Net Revenue - Beverages	55.00%	55.00%	55.00%	55.00%
Disaggregation of Net Revenue - Food/Snack	45.00%	45.00%	45.00%	45.00%
Charges Related to Novel Coronavirus (COVID-19)	$ 16		$ 65
Accounts Receivable, Credit Loss Expense (reversal) Novel Coronavirus (COVID-19) Impact	1		5
Prepaid Incentives Novel Coronavirus (COVID-19 ) Impact	1		2
Inventory Write-down and Product Returns Novel Coronavirus (COVID-19) Impact	0		10
Employee Compensation Expense Novel Coronavirus (COVID-19) Impact	8		17
Employee Protection Costs Novel Coronavirus (COVID-19) Impact	6		14
Charges Related to Novel Coronavirus (COVID-19) Impact - Other	0		17
Africa, Middle East and South Asia [Member]
Segment Reporting Information [Line Items]
Net Revenue	1,252	$ 957	2,866	$ 2,533
Operating Profit	$ 193	$ 210	$ 386	$ 551
Disaggregation of Net Revenue - Beverages	30.00%	45.00%	35.00%	45.00%
Disaggregation of Net Revenue - Food/Snack	70.00%	55.00%	65.00%	55.00%
Charges Related to Novel Coronavirus (COVID-19)	$ 6		$ 23
Accounts Receivable, Credit Loss Expense (reversal) Novel Coronavirus (COVID-19) Impact	0		1
Prepaid Incentives Novel Coronavirus (COVID-19 ) Impact	0		0
Inventory Write-down and Product Returns Novel Coronavirus (COVID-19) Impact	0		1
Employee Compensation Expense Novel Coronavirus (COVID-19) Impact	1		8
Employee Protection Costs Novel Coronavirus (COVID-19) Impact	2		6
Charges Related to Novel Coronavirus (COVID-19) Impact - Other	3		7
Asia Pacific, Australia and New Zealand, and China Region [Member]
Segment Reporting Information [Line Items]
Net Revenue	897	$ 781	2,215	$ 2,000
Operating Profit	$ 163	$ 166	$ 494	$ 388
Disaggregation of Net Revenue - Beverages	25.00%	30.00%	25.00%	25.00%
Disaggregation of Net Revenue - Food/Snack	75.00%	70.00%	75.00%	75.00%
Charges Related to Novel Coronavirus (COVID-19)	$ (1)		$ 4
Accounts Receivable, Credit Loss Expense (reversal) Novel Coronavirus (COVID-19) Impact	0		0
Prepaid Incentives Novel Coronavirus (COVID-19 ) Impact	0		0
Inventory Write-down and Product Returns Novel Coronavirus (COVID-19) Impact	2		3
Employee Compensation Expense Novel Coronavirus (COVID-19) Impact	(5)		(3)
Employee Protection Costs Novel Coronavirus (COVID-19) Impact	1		2
Charges Related to Novel Coronavirus (COVID-19) Impact - Other	1		2
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Profit	3,281	$ 3,160	8,272	$ 8,437
Corporate Unallocated [Member]
Segment Reporting Information [Line Items]
Operating Profit	$ (270)	$ (305)	$ (1,018)	$ (845)
United States and Canada [Member]
Segment Reporting Information [Line Items]
Fiscal Period Duration	84 days