Acquisitions & Divestiture - Summary of Acquisition and Divestiture-Related Charges (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	$ 22	$ 41	$ 80
Acquisition and divestiture-related charges, after-tax	$ 18	$ 23	$ 66
Acquisition and divestiture-related charges, PerShare	$ (0.01)	$ (0.02)	$ (0.05)
PepsiCo Foods North America [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	$ 9	$ 0	$ 0
PepsiCo Beverages North America [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	8	16	51
Europe, Middle East & Africa (Segment) [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	0	(2)	14
Asia Pacific Foods (Segment) [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	5	2	3
Corporate Segment [Member]
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	0	25	6
Selling, general and administrative expenses
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	22	41	74
Other pension and retiree medical benefits expense
Acquisitions & Divestitures [Line Items]
Acquisition and divestiture-related charges	$ 0	$ 0	$ 6

[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

Amount of expense for integration-related cost incurred in connection with business combination. Includes system integration and conversion costs; severance and other employee-related costs; restructuring and other post-combination costs. Excludes acquisition-related cost incurred to effect business combination; cost to issue debt or equity securities; and cost related to acquisition of asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-7

+ 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://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-3

+ 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_PepsiCoFoodsNorthAmericaMember
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_EuropeMiddleEastAfricaSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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