Equity Method Investments - Summary of earnings and distributions received from equity method investments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Schedule Of Equity Method Investments [Line Items]
Equity in Earnings	$ 511	$ 204	$ 1,199	$ 543
Distributions Received	187	218	342	350
Kraft Heinz [Member]
Schedule Of Equity Method Investments [Line Items]
Equity in Earnings	265	71	487	277
Distributions Received	130	130	260	260
Occidental [Member]
Schedule Of Equity Method Investments [Line Items]
Equity in Earnings	234		604
Distributions Received	36		61
Other [Member]
Schedule Of Equity Method Investments [Line Items]
Equity in Earnings	12	133	108	266
Distributions Received	$ 21	$ 88	$ 21	$ 90