Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 1,373	$ 1,902	$ 2,228
Cost of sales	(1,191)	(1,591)	(1,798)
Gross profit	182	311	430
Selling, general and administrative expenses	(165)	(189)	(156)
Research, development and engineering expenses, net	(407)	(562)	(466)
Amortization of intangibles	(6)	(20)	(23)
Other income, net	29	0	18
Operating loss	(367)	(460)	(197)
Gain on divestiture and assets impairment charge, net	(91)	0	0
Loss from equity method investment	(39)	(70)	(63)
Interest income	9	20	7
Interest expense	(20)	(12)	(1)
Other non-operating items, net	(4)	1	0
Loss before income taxes	(512)	(521)	(253)
Income tax expense	(32)	(1)	(42)
Net loss	(544)	(522)	(294)
Less: Net income/(loss) attributable to non-controlling interest	1	(22)	(19)
Net loss attributable to controlling interest	$ (545)	$ (500)	$ (276)
Net loss per share - basic and diluted (in dollars per share)	$ (4.89)	$ (4.92)	$ (3.17)
Weighted average number of shares outstanding, (in millions)	111,560	101,620	87,160
Weighted average number of shares outstanding, assuming dilution (in millions)	111,560	101,620	87,160