Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net Sales:
Revenues	$ 3,268	$ 3,313	$ 9,263	$ 9,765
Costs and Expenses:
Research and development	37	39	112	118
Selling, general and administrative	481	444	1,387	1,329
Costs and expenses	2,807	2,821	7,995	8,352
Other income (expense), net	(7)	(10)	(69)	(35)
Operating profit	454	482	1,199	1,378
Non-service pension cost (benefit)	2	(16)	0	(38)
Interest expense (income), net	39	(6)	85	(8)
Net income before income taxes	413	504	1,114	1,424
Income tax expense	103	143	337	411
Net income	310	361	777	1,013
Less: Noncontrolling interest in subsidiaries' earnings	44	44	122	115
Net income attributable to common shareholders	$ 266	$ 317	$ 655	$ 898
Earnings per share (Note 3):
Net income attributable to common shareholders (in usd per share)	$ 0.61	$ 0.73	$ 1.51	$ 2.07
Earnings Per Share, Diluted [Abstract]
Net income attributable to common shareholders (in usd per share)	$ 0.61	$ 0.73	$ 1.51	$ 2.07
Product sales
Net Sales:
Revenues	$ 1,423	$ 1,450	$ 3,840	$ 4,221
Costs and Expenses:
Cost of products and services sold	1,172	1,184	3,158	3,453
Service sales
Net Sales:
Revenues	1,845	1,863	5,423	5,544
Costs and Expenses:
Cost of products and services sold	$ 1,117	$ 1,154	$ 3,338	$ 3,452