Accumulated Other Comprehensive Loss Attributable to Pepsico Reclassification of Accumulated Other Comprehensive Loss to the Condensed Consolidated Statement of Income (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Post retirement Plans Taxes		$ 1,280	$ 1,253	$ 1,260
Reclassification associated with Venezuela impairment charges		0	111	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Reclassification of net losses to net income, pre-tax amount		150	97	249
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax		(63)	(47)	(95)
Net derivative losses		87	50	154
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax	[1]	(39)	(41)	(6)
Amortization and settlement of (losses)/gains	[1]	(209)	(281)	(226)
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax	[1]	237	6	149
Reclassification of net losses to net income		407	246	369
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax		(144)	(74)	(122)
Remeasurement of net liabilities and translation		263	172	247
Reclassification associated with Venezuela impairment charges - Pension		0	20	0
reclassification associated with Venezuela impairment charge, tax amount - Pension		0	(4)	0
reclassification associated with venezuela impairment charges, net of tax - pension		0	16	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		350	349	401
Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[2]	150	97
Forward Exchange Contracts | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[2]	(44)	(97)
Forward Exchange Contracts | Sales Revenue, Net [Member] | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		(2)	3	0
Forward Exchange Contracts | Cost of Sales | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		46	94	16
Interest Rate Contracts | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[2]	187	174
Interest Rate Contracts | Interest Expense | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		(187)	(174)	(233)
Commodity Contracts | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[2]	7	20
Commodity Contracts | Cost of Sales | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		(3)	(9)	(31)
Commodity Contracts | Selling, General and Administrative Expenses | Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		$ (4)	$ (11)	$ (1)

[1] (a)These items are included in the components of net periodic benefit cost for pension and retiree medical plans (see Note 7 for additional details).

[2] Foreign exchange derivative losses/gains are primarily included in cost of sales. Interest rate derivative losses/gains are included in interest expense. Commodity derivative losses/gains are included in either cost of sales or selling, general and administrative expenses, depending on the underlying commodity.