Accumulated Other Comprehensive Loss Attributable to PepsiCo - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 15, 2024	Mar. 23, 2024	Jun. 17, 2023	Mar. 25, 2023	Jun. 15, 2024	Jun. 17, 2023	Dec. 30, 2023	Dec. 31, 2022
Statement of Other Comprehensive Income [Abstract]
Beginning balance	$ (13,437)	$ (13,255)	$ (13,183)	$ (12,948)	$ (13,255)	$ (12,948)
Other comprehensive (loss) before reclassifications (b)	(295)	(168)	(215)	(350)
Amounts reclassified from accumulated other comprehensive loss (c)	0	0	0	108	0	108
Net other comprehensive (loss)	(295)	(168)	(215)	(242)
Tax amounts	28	(14)	17	7
Ending balance	(13,704)	(13,437)	(13,381)	(13,183)	(13,704)	(13,381)
Beginning balance	(28)	(31)	(58)	1	(31)	1
Other comprehensive (loss) before reclassifications (b)	3	(47)	19	(92)
Amounts reclassified from accumulated other comprehensive loss (c)	53	51	12	13	104	25
Net other comprehensive (loss)	56	4	31	(79)
Tax amounts	(14)	(1)	(7)	20
Ending balance	14	(28)	(34)	(58)	14	(34)
Beginning balance	2,708	2,719	2,365	2,361	2,719	2,361
Other comprehensive (loss)/income before reclassifications (d)	(1)	4	(14)	(9)
Amounts reclassified from accumulated other comprehensive loss	12	9	5	5	21	10
Net other comprehensive (loss)/income	11	13	(9)	(4)
Tax amounts	(2)	(2)	3	0
Ending balance	2,699	2,708	2,371	2,365	2,699	2,371
Beginning balance	994	471	5	6	471	6
Other comprehensive (loss)/income before reclassifications (d)	(511)	685	1	(1)
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Net other comprehensive (loss)/income	(511)	685	1	(1)
Tax amounts	120	(162)	0	0
Ending balance	603	994	6	5	603	6
OCI, before Reclassifications, before Tax, Attributable to Parent	(804)	474	(209)	(452)
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	65	60	17	126
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(739)	534	(192)	(326)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	132	(179)	13	27
Accumulated Other Comprehensive Income (Loss), Net of Tax	(15,786)	(15,179)	(15,780)	(15,601)	$ (15,786)	(15,780)	$ (15,534)	$ (15,302)
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]					Selling, general and administrative expenses
Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Post retirement Plans Taxes	1,278	1,280	1,187	1,184	$ 1,278	1,187	1,282	1,184
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Post retirement Plans Taxes	1,278	$ 1,280	1,187	$ 1,184	1,278	1,187	$ 1,282	$ 1,184
Interest Rate Contract | Cash Flow Hedging [Member]
Statement of Other Comprehensive Income [Abstract]
Other comprehensive (loss) before reclassifications (b)	(9)		37		(34)	26
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	11		$ (30)		35	$ (27)
Tropicana JV | Interest Rate Contract | Cash Flow Hedging [Member]
Reclassification Adjustments out of Accumulated Other Comprehensive Income [Line Items]
Losses/(Gains) Reclassified from Accumulated Other Comprehensive Loss into Income Statement(b)	$ 14				$ 35