Recent Accounting Pronouncements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 24, 2012	Jun. 12, 2010
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
One-time related tax charge		$ 41
Prescription drug benefit subsidy, income tax benefit	$ 55

Prescription Drug Benefit Subsidy, Income Tax Benefit

No definition available.

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