Financial Instruments - Income Statement (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivatives, Fair Value
Net sales	$ 1,426	$ 2,551	$ 3,705	$ 5,117
Cost of sales	1,252	2,038	3,084	4,085
Selling, general and administrative expenses	184	212	397	438
Other comprehensive income (loss)	14	5	(60)	4
Gain (loss) on cash flow hedging relationships:
Gain (loss) recognized in other comprehensive income (loss)	1	(1)	(2)	(1)
Cash Flow Hedging | Foreign currency | Gain (loss) reclassified from AOCI to income
Derivatives, Fair Value
Net sales	0	(1)	0	(2)
Cost of sales	0	1	0	1
Selling, general and administrative expenses	$ (1)	$ 0	$ (1)	$ 1