Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net sales	$ 669	$ 692	$ 2,081	$ 2,066
Cost of sales	321	324	985	982
Gross profit	348	368	1,096	1,084
Selling, general and administrative	85	89	262	274
Engineering — research and development	39	33	107	94
Operating income	224	246	727	716
Interest expense, net	(32)	(30)	(101)	(90)
Other income, net	2	2	8	5
Income before income taxes	194	218	634	631
Income tax expense	(45)	(51)	(137)	(139)
Net income	$ 149	$ 167	$ 497	$ 492
Basic earnings per share attributable to common stockholders (USD per share)	$ 1.24	$ 1.28	$ 4.04	$ 3.66
Diluted earnings per share attributable to common stockholders (USD per share)	$ 1.23	$ 1.27	$ 4.01	$ 3.64
Comprehensive income, net of tax	$ 136	$ 168	$ 467	$ 481