Rollforward of Reserves for Federal State and Foreign Tax Jurisdictions (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 21, 2015	Mar. 22, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year	$ 1,587us-gaap_UnrecognizedTaxBenefits	$ 1,268us-gaap_UnrecognizedTaxBenefits
Additions for tax positions related to the current year	40	349
Additions for tax positions from prior years	1	215
Reductions for tax positions from prior years	(1)	(81)
Settlement payments	(3)	(70)
Statute of limitations expiration	(25)	(42)
Translation and other	(9)pep_TranslationAndOther	(52)pep_TranslationAndOther
Balance, end of period	$ 1,590us-gaap_UnrecognizedTaxBenefits	$ 1,587us-gaap_UnrecognizedTaxBenefits

The gross amount of increases or decreases in unrecognized tax benefits resulting from translation and other activity.

No definition available.

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

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-Subparagraph (a)(3)

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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