Basis of Presentation and Our Divisions (Segment Reporting Information by Total Assets and Capital Spending) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Segment Reporting Information [Line Items]
Total Assets	$ 78,547	$ 77,648
Capital Spending	4,232	3,282	$ 2,969
Frito Lay North America [Member]
Segment Reporting Information [Line Items]
Total Assets	7,519	6,577
Capital Spending	1,227	840	665
Quaker Foods North America [Member]
Segment Reporting Information [Line Items]
Total Assets	941	870
Capital Spending	104	53	44
PepsiCo Beverages North America [Member]
Segment Reporting Information [Line Items]
Total Assets	31,449	29,878
Capital Spending	1,053	945	904
Latin America [Member]
Segment Reporting Information [Line Items]
Total Assets	7,007	6,458
Capital Spending	557	492	481
Europe [Member]
Segment Reporting Information [Line Items]
Total Assets	17,814	16,887
Capital Spending	613	466	463
Africa, Middle East and South Asia [Member]
Segment Reporting Information [Line Items]
Total Assets	3,672	3,252
Capital Spending	267	198	181
Asia Pacific, Australia and New Zealand, and China Region [Member]
Segment Reporting Information [Line Items]
Total Assets	4,113	3,704
Capital Spending	195	138	145
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Assets	72,515	67,626
Capital Spending	4,016	3,132	2,883
Corporate
Segment Reporting Information [Line Items]
Total Assets	6,032	10,022
Capital Spending	$ 216	$ 150	$ 86