Change in Book Value of Nonamortizable Intangible Assets (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 13, 2020	Dec. 28, 2019
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	$ 35,375	$ 30,111
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	5,883
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(619)
Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	792	461
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	336
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(5)
QFNA
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	200	200
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	0
PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	24,027	19,267
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	4,809
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(49)
Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	547	626
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(79)
Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	8,343	8,804
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(3)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(458)
Africa, Middle East and South Asia [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,174	446
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	741
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(13)
Asia Pacific, Australia and New Zealand, and China Region [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	292	307
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(15)
Goodwill
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	17,845	15,501
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	2,658
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(314)
Goodwill | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	455	299
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	160
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(4)
Goodwill | QFNA
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	189	189
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	0
Goodwill | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	11,850	9,898
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	1,968
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(16)
Goodwill | Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	443	501
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(58)
Goodwill | Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	3,742	3,961
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(3)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(216)
Goodwill | Africa, Middle East and South Asia [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	969	446
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	533
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(10)
Goodwill | Asia Pacific, Australia and New Zealand, and China Region [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	197	207
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(10)
Brands
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	8,186	5,342
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	3,084
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(240)
Brands | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	337	162
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	176
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(1)
Brands | QFNA
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	11	11
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	0
Brands | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	3,464	763
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	2,700
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	1
Brands | Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	104	125
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(21)
Brands | Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	3,970	4,181
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(211)
Brands | Africa, Middle East and South Asia [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	205
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	208
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(3)
Brands | Asia Pacific, Australia and New Zealand, and China Region [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	95	100
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(5)
Reacquired Franchise Rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	7,536	7,594
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(58)
Reacquired Franchise Rights | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	7,061	7,089
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(28)
Reacquired Franchise Rights | Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	475	505
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(30)
Acquired franchise rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,808	1,674
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	141
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(7)
Acquired franchise rights | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,652	1,517
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	141
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(6)
Acquired franchise rights | Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	156	$ 157
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	$ (1)