Fair Values of Financial Assets and Liabilities (Detail) $ in Millions	8 Months Ended
	Sep. 04, 2021 USD ($)	Dec. 26, 2020 USD ($)
Derivatives, Fair Value [Line Items]
Senior Notes	$ 200	$ 200
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)		2
Short-term Investments	344	1,366
Derivative Asset, Fair Value, Gross Asset	172	79
Derivative Liability, Fair Value, Gross Liability	269	393
Total Financial Assets At Fair Value	530	328
Total Financial Liabilities At Fair Value	1,615	1,731
Collateral Already Posted, Aggregate Fair Value	0
Business Combinations [Abstract]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	840
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances	861
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	$ 19
Duration of contingent consideration arrangement	15 years
Business Combination, Contingent Consideration, Asset	$ 0	0
Business Combination, Contingent Consideration, Liability	840	861
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Period Increase (Decrease)	2
Debt Instrument, Fair Value Disclosure	46,000	50,000
Hedged Liability, Discontinued Fair Value Hedge, Cumulative Increase (Decrease)	(4)
Debt and Equity Securities, Realized Gain (Loss)	69
Debt and Equity Securities, Realized Gain (Loss) - After Tax	52
PepsiCo Beverages North America [Member]
Business Combinations [Abstract]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	1,100
Derivatives Designated As Cash Flow Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	119	54
Derivatives Designated As Cash Flow Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	247	378
Derivatives Not Designated As Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	53	23
Derivatives Not Designated As Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Other Derivatives Not Designated as Hedging Instruments Liabilities at Fair Value	22	15
Fair Value, Inputs, Level 2 [Member] | Derivatives Designated As Fair Value Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Fair Value Hedge Asset at Fair Value	0	2
Fair Value, Inputs, Level 2 [Member] | Derivatives Designated As Fair Value Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest Rate Fair Value Hedge Liability at Fair Value	0	0
Fair Value, Inputs, Level 2 [Member] | Derivatives Designated As Cash Flow Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Asset at Fair Value	11	9
Interest Rate Cash Flow Hedge Asset at Fair Value	28	13
Price Risk Cash Flow Hedge Asset, at Fair Value	80	32
Fair Value, Inputs, Level 2 [Member] | Derivatives Designated As Cash Flow Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Liability at Fair Value	25	71
Interest Rate Cash Flow Hedge Liability at Fair Value	221	307
Price Risk Cash Flow Hedge Liability, at Fair Value	1	0
Fair Value, Inputs, Level 2 [Member] | Derivatives Not Designated As Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	5	4
Price Risk Derivative Instruments Not Designated as Hedging Instruments Asset, at Fair Value	48	19
Fair Value, Inputs, Level 2 [Member] | Derivatives Not Designated As Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	10	8
Price Risk Derivative Instruments Not Designated as Hedging Instruments Liability, at Fair Value	12	7
Fair Value, Inputs, Level 2 [Member] | Liability [Member]
Derivatives, Fair Value [Line Items]
Prepaid Forward Asset Fair Value	0	0
Deferred Compensation Liability, Current and Noncurrent	506	477
Fair Value, Inputs, Level 2 [Member] | Assets [Member]
Derivatives, Fair Value [Line Items]
Prepaid Forward Asset Fair Value	19	18
Deferred Compensation Liability, Current and Noncurrent	0	0
Liability [Member] | Fair Value, Inputs, Level 1 [Member]
Derivatives, Fair Value [Line Items]
Short-term Investments	0	0
Assets [Member] | Fair Value, Inputs, Level 1 [Member]
Derivatives, Fair Value [Line Items]
Short-term Investments	$ 339	$ 231
Fair Value, Inputs, Level 3, estimated range of payments, low [Member]
Business Combinations [Abstract]
Business Combination, Contingent Consideration, Liability, Measurement Input	40,000,000
Fair Value, Inputs, Level 3, estimated range of payments, high [Member]
Business Combinations [Abstract]
Business Combination, Contingent Consideration, Liability, Measurement Input	110,000,000
Fair Value, Inputs, Level 3, estimated range of payments, average [Member]
Business Combinations [Abstract]
Business Combination, Contingent Consideration, Liability, Measurement Input	70,000,000
Fair Value, Inputs, Level 3, estimated range of probabilities of acceleration, low [Member]
Business Combinations [Abstract]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.02
Fair Value, Inputs, Level 3, estimated range of probabilities of acceleration, high [Member]
Business Combinations [Abstract]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.35
Fair Value, Inputs, Level 3, weighted average payment period [Member]
Business Combinations [Abstract]
Duration of contingent consideration arrangement	3 years
Fair Value, Inputs, Level 3, estimated range of discount rates, low [Member]
Business Combinations [Abstract]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.01
Fair Value, Inputs, Level 3, estimated range of discount rates, high [Member]
Business Combinations [Abstract]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.05
Fair Value, Inputs, Level 3, weighted average discount rate [Member]
Business Combinations [Abstract]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.04