Accumulated Other Comprehensive Loss Attributable to PepsiCo - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 25, 2023	Mar. 19, 2022	Dec. 31, 2022	Dec. 25, 2021
Statement of Other Comprehensive Income [Abstract]
Beginning balance	$ (12,948)	$ (12,309)
Other comprehensive (loss)/income before reclassifications (b)	(350)	(549)
Amounts reclassified from accumulated other comprehensive loss	108	0
Net other comprehensive (loss)/income	(242)	(549)
Tax amounts	7	(11)
Ending balance	(13,183)	(12,869)
Beginning balance	1	159
Other comprehensive (loss)/income before reclassifications (b)	(92)	200
Amounts reclassified from accumulated other comprehensive loss	13	(62)
Net other comprehensive (loss)/income	(79)	138
Tax amounts	20	(32)
Ending balance	(58)	265
Beginning balance	2,361	2,750
Other comprehensive income/(loss) before reclassifications (c)	(9)	(8)
Amounts reclassified from accumulated other comprehensive loss	5	25
Net other comprehensive income/(loss)	(4)	17
Tax amounts	0	(4)
Ending balance	2,365	2,737
Beginning balance	6	2
Other comprehensive (loss)/income before reclassifications (d)	(1)	0
Amounts reclassified from accumulated other comprehensive loss	0	0
Net other comprehensive (loss)/income	(1)	0
Tax amounts	0	(4)
Ending balance	5	(2)
OCI, before Reclassifications, before Tax, Attributable to Parent	(452)	(357)
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent	126	(37)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(326)	(394)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	27	(51)
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (15,601)	(15,343)	$ (15,302)	$ (14,898)
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	$ 1,184	$ 1,279	$ 1,184	$ 1,283