Share-Based Compensation Share-Based Compensation (Other Stock-Based Compensation Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	2,157,000	1,847,000	1,286,000
Weighted-average grant-date fair value of options granted	$ 9.88	$ 8.31	$ 10.89
Total intrinsic value of options exercised (a)	$ 153,306	$ 155,096	$ 275,745
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 10,605	$ 8,652	$ 9,838
Equity Instruments Other Than Options
Phantom Units Granted Under Director Deferral Program, Shares Outstanding	299,000	287,000
LiabilityAwards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
LiabilityAwardsNonvestedNumber	$ 45,792	$ 47,513
LiabilityAwardsNonvestedBalanceSheetFairValue	$ 50,238
LiabilityAwardsNonvestedRemainingContractualTerm	1 year 3 months 14 days
Equity Instruments Other Than Options
LiabilityAwardsGranted	$ 16,507
Liability Awards Vested	(16,567)
LiabilityAwardsForfeituresExpirations	(1,661)
LiabilityAwardsExpectedtoVest,Outstanding,Number	43,480
LiabilityAwardsExpectedtoVest,BalanceSheetFairValue	$ 47,771
LiabilityAwardsExpectedtoVest,RemainingContractualTerm	1 year 3 months 7 days
Performance Shares [Member]
Equity Instruments Other Than Options
LiabilityAwardsPerformanceAssumptionAdjustmentAwardsOutstanding	$ 46,000
Performance Shares [Member] \| Minimum
Equity Instruments Other Than Options
Share-based Compensation Arrangement by Share-Based Payment Award, Equity instruments other than options, Performance Assumption Adjustment, Shares	0
LiabilityAwardsPerformanceAssumptionAdjustmentAwardsOutstanding	$ 0
Performance Shares [Member] \| Maximum
Equity Instruments Other Than Options
Share-based Compensation Arrangement by Share-Based Payment Award, Equity instruments other than options, Performance Assumption Adjustment, Shares	2,000,000
LiabilityAwardsPerformanceAssumptionAdjustmentAwardsOutstanding	$ 92,000
Restricted Stock Units (RSUs)
Equity Instruments Other Than Options
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	2,636,000	2,496,000	2,754,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 131.81	$ 131.21	$ 116.87
Total intrinsic value of converted units	$ 273,878	$ 303,165	$ 333,951
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 198,469	$ 235,523	$ 275,234

LiabilityAwardsExpectedtoVest,BalanceSheetFairValue

No definition available.

Name:	pep_LiabilityAwardsExpectedtoVestBalanceSheetFairValue
Namespace Prefix:	pep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

LiabilityAwardsExpectedtoVest,Outstanding,Number

+ References

No definition available.

+ Details

Name:	pep_LiabilityAwardsExpectedtoVestOutstandingNumber
Namespace Prefix:	pep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

LiabilityAwardsExpectedtoVest,RemainingContractualTerm

+ References

No definition available.

+ Details

Name:	pep_LiabilityAwardsExpectedtoVestRemainingContractualTerm
Namespace Prefix:	pep_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

LiabilityAwardsForfeituresExpirations

+ References

No definition available.

+ Details

Name:	pep_LiabilityAwardsForfeituresExpirations
Namespace Prefix:	pep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

LiabilityAwardsGranted

+ References

No definition available.

+ Details

Name:	pep_LiabilityAwardsGranted
Namespace Prefix:	pep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

LiabilityAwardsNonvestedBalanceSheetFairValue

+ References

No definition available.

+ Details

Name:	pep_LiabilityAwardsNonvestedBalanceSheetFairValue
Namespace Prefix:	pep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

LiabilityAwardsNonvestedNumber

+ References

No definition available.

+ Details

Name:	pep_LiabilityAwardsNonvestedNumber
Namespace Prefix:	pep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

LiabilityAwardsNonvestedRemainingContractualTerm

+ References

No definition available.

+ Details

Name:	pep_LiabilityAwardsNonvestedRemainingContractualTerm
Namespace Prefix:	pep_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Liability Awards Performance Assumption Adjustment Awards Outstanding

+ References

No definition available.

+ Details

Name:	pep_LiabilityAwardsPerformanceAssumptionAdjustmentAwardsOutstanding
Namespace Prefix:	pep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Liability Awards Vested

+ References

No definition available.

+ Details

Name:	pep_LiabilityAwardsVested
Namespace Prefix:	pep_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Phantom Units Granted Under Director Deferral Program, Shares Outstanding

+ References

No definition available.

+ Details

Name:	pep_PhantomUnitsGrantedUnderDirectorDeferralProgramSharesOutstanding
Namespace Prefix:	pep_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Converted, Total Intrinsic Value

+ References

No definition available.

+ Details

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

- Definition

Share-based Compensation Arrangement by Share-Based Payment Award, Equity instruments other than options, Performance Assumption Adjustment, Shares

+ References

No definition available.

+ Details

Name:	pep_SharebasedCompensationArrangementbyShareBasedPaymentAwardEquityinstrumentsotherthanoptionsPerformanceAssumptionAdjustmentShares
Namespace Prefix:	pep_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_AwardTypeAxis=pep_LiabilityAwardsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: