Condensed Consolidated Income Statements (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenues	$ 1,237	$ 1,217
Cost of revenue	763	757
Gross profit	474	460
Selling, general and administrative expenses	303	296
Research and development expenses	51	41
Restructuring and asset impairment charges	11	10
Operating income	109	113
Interest expense	18	21
Other non-operating income, net	2	3
Gain from sale of business	1	0
Income before taxes	94	95
Income tax expense	15	16
Net income	$ 79	$ 79
Earnings per share:
Basic (usd per share)	$ 0.44	$ 0.44
Diluted (usd per share)	$ 0.43	$ 0.43
Weighted average number of shares:
Basic (in shares)	179,746	179,881
Diluted (in shares)	181,113	181,365