Financial Instruments, Derivatives and Hedging Activities - Additional information - CF hedges (Details) - Cash Flow Hedging [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Hedging relationships
Gains (Losses) Recognized in OCL	$ 35	$ 16	$ 211	$ (50)
Gains (Losses) Reclassified from AOCL into Income	60	(31)	170	(56)
Commodity Contract [Member]
Hedging relationships
Gains (Losses) Recognized in OCL	36	21	212	(36)
Commodity Contract [Member] | Cost of Sales [Member]
Hedging relationships
Gains (Losses) Reclassified from AOCL into Income	62	(30)	171	(54)
Foreign Currency Contracts
Hedging relationships
Gains (Losses) Recognized in OCL	(1)	(5)	(1)	(9)
Foreign Currency Contracts | Net sales/Cost of sales
Hedging relationships
Gains (Losses) Reclassified from AOCL into Income	$ (2)	$ (1)	$ (1)	(1)
Interest Rate Contract [Member]
Hedging relationships
Gains (Losses) Recognized in OCL				(5)
Interest Rate Contract [Member] | Financing Costs [Member]
Hedging relationships
Gains (Losses) Reclassified from AOCL into Income				$ (1)