Change in Book Value of Nonamortizable Intangible Assets (Detail) - USD ($) $ in Millions	8 Months Ended
	Sep. 04, 2021	Dec. 26, 2020
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	$ 35,822	$ 36,369
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(564)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	17
Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	802	805
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(8)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	5
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
PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	23,158	23,954
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(505)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(291)
Africa, Middle East and South Asia [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,345	1,310
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(2)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	37
Asia Pacific, Australia and New Zealand, and China Region [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,028	999
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	3
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	26
Latin America (Segment)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	553	566
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(13)
Europe (Segment)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	8,747	8,546
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(52)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	253
Goodwill
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	18,531	18,757
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(251)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	25
Goodwill | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	461	465
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(8)
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	11,984	12,189
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(216)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	11
Goodwill | Africa, Middle East and South Asia [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,121	1,096
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(2)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	27
Goodwill | Asia Pacific, Australia and New Zealand, and China Region [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	559	554
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	3
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	2
Goodwill | Latin America (Segment)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	448	458
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(10)
Goodwill | Europe (Segment)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	3,769	3,806
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(28)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(9)
Brands
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	7,997	8,301
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(290)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(14)
Brands | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	341	340
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	1
Brands | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	2,508	3,122
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(290)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(324)
Brands | Africa, Middle East and South Asia [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	224	214
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	10
Brands | Asia Pacific, Australia and New Zealand, and China Region [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	469	445
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	24
Brands | Latin America (Segment)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	105	108
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(3)
Brands | Europe (Segment)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	4,350	4,072
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	278
Reacquired Franchise Rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	7,587	7,603
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(24)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	8
Reacquired Franchise Rights | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	7,125	7,107
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	18
Reacquired Franchise Rights | Europe (Segment)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	462	496
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(24)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(10)
Acquired franchise rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,707	1,708
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	1
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(2)
Acquired franchise rights | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,541	1,536
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	1
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	4
Acquired franchise rights | Europe (Segment)
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	166	$ 172
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	$ (6)