Accumulated Other Comprehensive Loss Attributable to Pepsico (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Dec. 25, 2021	Dec. 26, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Currency translation adjustment	$ (13,255)	$ (12,948)	$ (12,309)	$ (11,940)
Unamortized pension and retiree medical, net of tax (b)	(2,719)	(2,361)	(2,750)	(3,520)
Other	471	6	2	(20)
Accumulated other comprehensive loss attributable to PepsiCo	(15,534)	(15,302)	(14,898)	(15,476)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	(334)	(603)	(322)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	(456)	488	1,001
Other Comprehensive Income, Other, Before Tax	608	8	22
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(224)	(314)	901
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	(442)	(603)	(340)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax	(493)	48	702
Other Comprehensive Income (Loss), before Reclassifications, before Tax	608	8	22
OCI, before Reclassifications, before Tax, Attributable to Parent	(515)	(625)	632
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax	108	0	18
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	37	440	299
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0	0	0
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	291	311	269
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	27	(36)	(47)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	98	(99)	(231)
Other Comprehensive Income, Other, Taxes	(143)	(4)	0
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(8)	(90)	(323)
Net of taxes decrease to opening balance of accumulated other comprehensive loss attributable to Pepsico	1,282	1,184	1,283	1,514
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	(188)	(78)	248
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	146	(129)	(48)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax	(42)	(207)	200
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent	10	49	(45)
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	$ (31)	$ 1	$ 159	$ 4