Consolidated Income Statements - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenue	$ 4,876	$ 5,249	$ 5,207
Cost of revenue	3,046	3,203	3,181
Gross profit	1,830	2,046	2,026
Selling, general and administrative expenses	1,143	1,158	1,161
Research and development expenses	187	191	189
Restructuring and asset impairment charges	75	63	22
Goodwill, Impairment Loss	58	148	0
Operating income	367	486	654
Interest expense	77	67	82
Other non-operating (expense) income, net	(5)	(4)	13
Gain on sale of businesses	0	1	0
Income before taxes	285	416	585
Income tax expense	31	15	36
Net income	$ 254	$ 401	$ 549
Earnings per share:
Basic (in dollars per share)	$ 1.41	$ 2.23	$ 3.05
Diluted (in dollars per share)	$ 1.40	$ 2.21	$ 3.03
Basic (in shares)	180,116	179,987	179,777
Weighted average common shares outstanding — Diluted	181,099	181,196	181,132
Dividends declared per share (in usd per share)	$ 1.04	$ 0.96	$ 0.84