Financial Instruments, Derivatives and Hedging Activities - Additional information - CF hedges (Details) - Cash Flow Hedging - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Hedging relationships
Gains (Losses) Recognized in OCI	$ 29	$ (46)
Gains (Losses) Reclassified from AOCI into Income	1	6
Commodity Contracts
Hedging relationships
Gains (Losses) Recognized in OCI	27	(37)
Commodity Contracts | Cost of sales
Hedging relationships
Gains (Losses) Reclassified from AOCI into Income	(1)	7
Foreign Currency Contracts
Hedging relationships
Gains (Losses) Recognized in OCI	2	(5)
Foreign Currency Contracts | Net sales/Cost of sales
Hedging relationships
Gains (Losses) Reclassified from AOCI into Income	$ 2	(1)
Interest Rate Contracts
Hedging relationships
Gains (Losses) Recognized in OCI		$ (4)