Revenue Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 2,689	$ 3,035	$ 5,446	$ 5,790
Over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,439	1,496	2,914	2,861
Point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 1,250	$ 1,539	$ 2,532	$ 2,929