Financial Instruments - Fair Values of Financial Assets and Liabilities (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 14, 2025	Dec. 28, 2024
Derivatives, Fair Value [Line Items]
Derivative Liability	$ 225	$ 246
Derivative Asset	97	114
Total Financial Assets At Fair Value	1,646	1,506
Total Financial Liabilities At Fair Value	$ 932	$ 749
Collateral Received or Posted against our Asset or Liability Positions	not material
Derivative Assets and Liabilities, Subject to Master Netting Arrangements, which are not offset on balance sheet.	not material	not material
Carrying Amount, Hedged Fixed-Rate Debt	$ 2,000
Business Combination, Contingent Consideration, Asset	0	$ 0
Business Combination, Contingent Consideration, Liability	226	0
poppi acquisition
Derivatives, Fair Value [Line Items]
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount	300
Derivatives Designated As Cash Flow Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Assets, Total	79	82
Derivatives Designated As Cash Flow Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liabilities, Total	164	174
Derivatives Not Designated As Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value [Member]	11	31
Derivatives Not Designated As Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	39	22
Fair Value, Inputs, Level 2 \| Derivative Designated As Net Investment Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Cross-Currency Contracts	0	1
Fair Value, Inputs, Level 2 \| Derivatives Designated As Cash Flow Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign Exchange Forward contracts	5	55
Cross-Currency Contracts	0	0
Commodity Contracts	74	27
Fair Value, Inputs, Level 2 \| Derivatives Designated As Cash Flow Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign Exchange Forward contracts	40	3
Cross-Currency Contracts	110	165
Commodity Contracts	14	6
Fair Value, Inputs, Level 2 \| Derivatives Not Designated As Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign Exchange Forward contracts	10	28
Commodity Contracts	1	3
Fair Value, Inputs, Level 2 \| Derivatives Not Designated As Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign Exchange Forward contracts	28	12
Commodity Contracts	11	10
Fair Value, Inputs, Level 2 \| Derivatives Designated As Fair Value Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Fair Value Hedge Liability at Fair Value	10	46
Fair Value, Inputs, Level 2 \| Derivative Designated As Net Investment Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Cross-Currency Contracts	12	4
Fair Value, Inputs, Level 2 \| Derivatives Designated As Fair Value Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Fair Value Hedge Asset at Fair Value	$ 7	$ 0

PEPSICO INC 10-Q