Goodwill and Intangible Assets (Goodwill balance by business segment) (Details)	3 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 31, 2018
Goodwill Information
Number of business combinations completed		0
Purchased goodwill from acquisitions	$ 580,000,000
Goodwill acquired during the period which is deductible for tax purposes	0
Goodwill
Balance at the beginning of the period	10,051,000,000
Acquisition activity	580,000,000
Translation and other	(20,000,000)
Balance at the end of the period	10,611,000,000
Amount of Goodwill impairment	0
Industrial
Goodwill
Balance at the beginning of the period	2,614,000,000
Translation and other	(28,000,000)
Balance at the end of the period	2,586,000,000
Safety and Graphics
Goodwill
Balance at the beginning of the period	4,325,000,000
Translation and other	(4,000,000)
Balance at the end of the period	4,321,000,000
Health Care
Goodwill
Balance at the beginning of the period	1,654,000,000
Acquisition activity	580,000,000
Translation and other	(11,000,000)
Balance at the end of the period	2,223,000,000
Electronics and Energy
Goodwill
Balance at the beginning of the period	1,250,000,000
Translation and other	(7,000,000)
Balance at the end of the period	1,243,000,000
Consumer
Goodwill
Balance at the beginning of the period	208,000,000
Translation and other	30,000,000
Balance at the end of the period	$ 238,000,000