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. 30, 2023	Dec. 31, 2022	Dec. 25, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	$ (33)	$ (37)	$ (44)
Amortization and settlement of (losses)/gains	56	164	289
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), before Tax	14	313	54
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	37	440	299
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax	(7)	(80)	(65)
Remeasurement of net liabilities and translation	$ 30	$ 360	$ 234
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, general and administrative expenses	Selling, general and administrative expenses	Selling, general and administrative expenses
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	$ 146	$ (129)	$ (48)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	(39)	23	11
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	107	(106)	(37)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	245	254	215
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax	108	0	18
Cash Flow Hedges
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	155	(129)
Foreign Exchange Forward Contracts | Cash Flow Hedges
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	61	(21)
Foreign Exchange Forward Contracts | Revenue Benchmark [Member] | Cash Flow Hedges
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(3)	(11)	6
Foreign Exchange Forward Contracts | Cost of sales | Cash Flow Hedges
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	64	(10)	76
Interest Rate Contracts | Cash Flow Hedges
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(31)	159
Interest Rate Contracts | Cash Flow Hedges | Tropicana JV
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	40	159	(64)
Commodity Contracts | Cash Flow Hedges
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	125	(267)
Commodity Contracts | Cost of sales | Cash Flow Hedges
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	126	(252)	(190)
Commodity Contracts | Selling, general and administrative expenses | Cash Flow Hedges
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	$ (1)	$ (15)	$ (4)