Condensed Consolidated Income Statements (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Revenue	$ 920	$ 1,005	$ 1,757	$ 1,911
Cost of revenue	572	617	1,094	1,181
Gross profit	348	388	663	730
Selling, general and administrative expenses	218	242	424	466
Research and development expenses	25	27	48	54
Restructuring charges	1	3	4	18
Operating income	104	116	187	192
Interest expense	14	13	28	27
Other non-operating income, net	1	1	0	0
Gain from sale of businesses	0	0	9	0
Income before taxes	91	104	168	165
Income tax expense	17	18	30	30
Net income	$ 74	$ 86	$ 138	$ 135
Earnings per share:
Basic (usd per share)	$ 0.41	$ 0.47	$ 0.76	$ 0.74
Diluted (usd per share)	$ 0.41	$ 0.47	$ 0.76	$ 0.73
Weighted average number of shares:
Basic (in shares)	181,474	183,377	181,784	183,962
Diluted (in shares)	182,313	184,519	182,688	185,144
Dividends declared per share (usd per share)	$ 0.1408	$ 0.1280	$ 0.2816	$ 0.256