Acquisitions & Divestiture - Summary of Acquisition and Divestiture-Related Charges (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	$ 80	$ (4)	$ 255
Acquisition and divestiture-related charges, after-tax	$ 66	$ (27)	$ 237
Acquisition and divestiture-related charges, PerShare	$ (0.05)	$ 0.02	$ (0.17)
Frito Lay North America [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	$ 0	$ 2	$ 29
PepsiCo Beverages North America [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	51	11	66
Europe
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	14	8	0
Africa, Middle East and South Asia [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	3	10	173
Asia Pacific, Australia and New Zealand, and China Region [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	0	4	7
Corporate Segment [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	6	(39)	(20)
Selling, general and administrative expenses
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	74	(5)	223
Cost of sales
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	0	1	32
Other pension and retiree medical benefits expense
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	$ 6	$ 0	$ 0

[Line Items] for Acquisitions & Divestitures [Table]

No definition available.

Name:	pep_AcquisitionsDivestituresLineItems
Namespace Prefix:	pep_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Business Combination, Separately Recognized Transactions, Net Gains and Losses, after-tax

+ References

No definition available.

+ Details

Name:	pep_BusinessCombinationSeparatelyRecognizedTransactionsNetGainsAndLossesAfterTax
Namespace Prefix:	pep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Business Combination, Separately Recognized Transactions, Net Gains and Losses, Per Share

+ References

No definition available.

+ Details

Name:	pep_BusinessCombinationSeparatelyRecognizedTransactionsNetGainsAndLossesPerShare
Namespace Prefix:	pep_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessCombinationIntegrationRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The net gains or losses recognized for each transaction with the acquiree that was recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(3)
-URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsNetGainsAndLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=pep_FritoLayNorthAmericaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=pep_PepsiCoBeveragesNorthAmericaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=pep_EuropeSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=pep_AfricaMiddleEastandSouthAsiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=pep_AsiaPacificAustraliaandNewZealandandChinaRegionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=pep_UsGaap_OtherpensionandretireemedicalbenefitsexpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: