Change in Book Value of Nonamortizable Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 21, 2020	Dec. 28, 2019
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	$ 30,001	$ 30,111
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	356
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(466)
Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	786	461
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	338
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(13)
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	19,170	19,267
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	21
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(118)
Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	592	626
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(34)
Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	8,516	8,804
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(3)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(285)
Africa, Middle East and South Asia [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	447	446
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	1
Asia Pacific, Australia and New Zealand, and China Region [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	290	307
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(17)
Goodwill
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	15,465	15,501
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	180
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(216)
Goodwill | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	450	299
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	162
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(11)
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	9,880	9,898
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	21
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(39)
Goodwill | Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	475	501
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(26)
Goodwill | Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	3,827	3,961
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(3)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(131)
Goodwill | Africa, Middle East and South Asia [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	447	446
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	1
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	5,370	5,342
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	176
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(148)
Brands | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	336	162
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	176
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(2)
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	763	763
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	0
Brands | Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	117	125
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(8)
Brands | Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	4,050	4,181
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(131)
Brands | Asia Pacific, Australia and New Zealand, and China Region [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	93	100
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(7)
Reacquired Franchise Rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	7,508	7,594
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(86)
Reacquired Franchise Rights | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	7,023	7,089
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(66)
Reacquired Franchise Rights | Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	485	505
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(20)
Acquired franchise rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,658	1,674
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(16)
Acquired franchise rights | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,504	1,517
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(13)
Acquired franchise rights | Europe [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	154	$ 157
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	$ (3)