Statement of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Operating Revenue	$ 13,599	$ 13,405	$ 14,484
Cost of revenue	7,896	7,888	8,673
Selling, administrative, and research and development expenses	2,415	2,417	2,678
Amortization and impairment of intangible assets	224	233	245
Operating Income	3,064	2,867	2,888
Interest expense	(237)	(226)	(250)
Other income (expense)	81	78	61
Income from Continuing Operations Before Income Taxes	2,908	2,719	2,699
Income taxes	873	820	809
Income from Continuing Operations	2,035	1,899	1,890
Income from Discontinued Operations	0	0	1,056
Net Income	$ 2,035	$ 1,899	$ 2,946
Income Per Share from Continuing Operations:
Basic (in dollars per share)	$ 5.73	$ 5.16	$ 4.70
Diluted (in dollars per share)	5.70	5.13	4.67
Income Per Share from Discontinued Operations:
Basic (in dollars per share)	0.00	0.00	2.63
Diluted (in dollars per share)	0.00	0.00	2.61
Net Income Per Share:
Basic (in dollars per share)	5.73	5.16	7.33
Diluted (in dollars per share)	$ 5.70	$ 5.13	$ 7.28