Change in Book Value of Nonamortizable Intangible Assets (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 15, 2019	Dec. 29, 2018
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	$ 29,780	$ 28,989
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	698
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	93
Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	458	458
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(3)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	3
QFNA
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	206	209
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(3)
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	19,219	18,734
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	456
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	29
Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	627	636
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(9)
Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	8,790	8,457
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	252
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	81
Asia, Middle East and North Africa [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	480	495
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(4)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(11)
Goodwill
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	15,632	14,808
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	768
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	56
Goodwill | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	297	297
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(3)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	3
Goodwill | QFNA
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	195	184
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	11
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	9,956	9,813
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	134
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	9
Goodwill | Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	502	509
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(7)
Goodwill | Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	4,301	3,611
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	630
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	60
Goodwill | Asia, Middle East and North Africa [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	381	394
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(4)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(9)
Brands
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	4,910	4,955
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(70)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	25
Brands | Frito Lay North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	161	161
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	0
Brands | QFNA
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	11	25
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(14)
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	675	353
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	322
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	0
Brands | Latin America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	125	127
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(2)
Brands | Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	3,839	4,188
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	(378)
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	29
Brands | Asia, Middle East and North Africa [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	99	101
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(2)
Reacquired Franchise Rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	7,568	7,555
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	13
Reacquired Franchise Rights | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	7,074	7,058
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	16
Reacquired Franchise Rights | Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	494	497
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(3)
Acquired franchise rights
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,670	1,671
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	(1)
Acquired franchise rights | PepsiCo Beverages North America [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	1,514	1,510
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	4
Acquired franchise rights | Europe Sub-Saharan Africa
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	156	$ 161
Goodwill and Indefinite-lived Intangible Assets, Acquired (Divested) During Period	0
Indefinite-lived Intangible Assets [Roll Forward]
Translation and Other	$ (5)