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Financial Instruments, Derivatives and Hedging Activities - Additional information - CF hedges (Details) - Cash Flow Hedging - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Hedging relationships
Gains (Losses) Recognized in OCI	$ 5	$ (19)	$ 8
Financing costs, net
Hedging relationships
Gains (Losses) Reclassified from AOCI into Income	(65)	(14)	(6)
Commodity Contracts
Hedging relationships
Gains (Losses) Recognized in OCI	17	(24)	8
Gains (Losses) Reclassified from AOCI into Income	(62)	(12)	(6)
Foreign Currency Contracts
Hedging relationships
Gains (Losses) Recognized in OCI	(7)	5
Foreign Currency Contracts | Cost of sales
Hedging relationships
Gains (Losses) Reclassified from AOCI into Income	(2)		1
Interest Rate Contracts
Hedging relationships
Gains (Losses) Recognized in OCI	(5)
Interest Rate Contracts | Net sales/Cost of sales
Hedging relationships
Gains (Losses) Reclassified from AOCI into Income	$ (1)	$ (2)	$ (1)

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Amount before tax and reclassification adjustments of other comprehensive income (loss).

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