Statement of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Operating Revenue	$ 14,109	$ 14,768	$ 14,314
Cost of revenue	8,187	8,604	8,306
Selling, administrative, and research and development expenses	2,361	2,391	2,412
Legal settlement (income)	0	0	(95)
Amortization and impairment of intangible assets	159	189	206
Operating Income	3,402	3,584	3,485
Interest expense	(221)	(257)	(260)
Other income (expense)	107	67	45
Income Before Taxes	3,288	3,394	3,270
Income taxes	767	831	1,583
Net Income	$ 2,521	$ 2,563	$ 1,687
Net Income Per Share:
Basic (in dollars per share)	$ 7.78	$ 7.65	$ 4.90
Diluted (in dollars per share)	$ 7.74	$ 7.60	$ 4.86