Accumulated Other Comprehensive Loss Attributable to Pepsico (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Currency translation adjustment	$ (12,948)	$ (12,309)	$ (11,940)	$ (11,290)
Unamortized pension and retiree medical, net of tax (b)	(2,361)	(2,750)	(3,520)	(2,988)
Other	6	2	(20)	(19)
Accumulated other comprehensive loss attributable to PepsiCo	(15,302)	(14,898)	(15,476)	(14,300)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	(603)	(322)	(710)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	488	1,001	(676)
Other Comprehensive Income, Other, Before Tax	8	22	(1)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(314)	901	(1,377)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	(603)	(340)	(710)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax	48	702	(1,141)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	8	22	(1)
OCI, before Reclassifications, before Tax, Attributable to Parent	(625)	632	(1,726)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax	0	18	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	440	299	465
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0	0	0
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	311	269	349
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	(36)	(47)	60
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	(99)	(231)	144
Other Comprehensive Income, Other, Taxes	(4)	0	0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(90)	(323)	201
Net of taxes decrease to opening balance of accumulated other comprehensive loss attributable to Pepsico	1,184	1,283	1,514	1,370
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	(78)	248	126
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	(129)	(48)	(116)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	(207)	200	10
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent	49	(45)	(3)
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	$ 1	$ 159	$ 4	$ (3)