Change in Book Value of Nonamortizable Intangible Assets (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 23, 2019	Dec. 29, 2018
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		$ 29,279	$ 28,989
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		290
Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		457	458
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		(1)
QFNA
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		209	209
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		18,759	18,734
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		25
Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		654	636
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		18
Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		8,699	8,457
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	[1]	242
Asia Middle East and North Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		501	495
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		6
Goodwill
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		14,945	14,808
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		137
Goodwill | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		296	297
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		(1)
Goodwill | QFNA
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		184	184
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		9,821	9,813
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		8
Goodwill | Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		523	509
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		14
Goodwill | Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		3,722	3,611
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	[1]	111
Goodwill | Asia Middle East and North Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		399	394
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		5
Brands
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		5,088	4,955
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		133
Brands | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		161	161
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		0
Brands | QFNA
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		25	25
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		353	353
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		0
Brands | Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		131	127
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		4
Brands | Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		4,316	4,188
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	[1]	128
Brands | Asia Middle East and North Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		102	101
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		1
Reacquired Franchise Rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		7,573	7,555
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		18
Reacquired Franchise Rights | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		7,072	7,058
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		14
Reacquired Franchise Rights | Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		501	497
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	[1]	4
Acquired franchise rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		1,673	1,671
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		1,513	1,510
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other		3
Acquired franchise rights | Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets		160	$ 161
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	[1]	$ (1)

[1] (a)The change primarily reflects appreciation of the Russian ruble.