Equity Method Investments - Summary of carrying value and fair value of investments (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 28,050	$ 16,045
Kraft Heinz [Member]
Schedule of Equity Method Investments [Line Items]
Carrying Value	12,937	13,112
Fair Value	13,249	11,683
Occidental [Member]
Schedule of Equity Method Investments [Line Items]
Carrying Value	11,484
Fair Value	12,242
Other [Member]
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 3,629	$ 2,933