Restructuring Actions and Exit Activities (Details) $ in Millions	3 Months Ended
	Jun. 30, 2019 USD ($) person	Dec. 31, 2018 USD ($)	Jun. 30, 2018 USD ($) individual
2019 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, number of positions affected | person	2,000
Restructuring charges	$ 148
Operating restructuring charges	112
2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges	72
2019 Restructuring Actions | Asset-Related
Restructuring Cost and Reserve
Operating restructuring charges	40
2019 Restructuring Actions | Cost of sales
Restructuring Cost and Reserve
Restructuring charges	18
2019 Restructuring Actions | Selling, general and administrative expenses
Restructuring Cost and Reserve
Restructuring charges	89
2019 Restructuring Actions | Research, development and related expenses
Restructuring Cost and Reserve
Restructuring charges	5
2019 Restructuring Actions | Other expense (income), net
Restructuring Cost and Reserve
Restructuring charges	36
2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring charges		$ 32	$ 105
2018 Restructuring Actions | Cost of sales
Restructuring Cost and Reserve
Restructuring charges		15	12
2018 Restructuring Actions | Selling, general and administrative expenses
Restructuring Cost and Reserve
Restructuring charges		16	89
2018 Restructuring Actions | Research, development and related expenses
Restructuring Cost and Reserve
Restructuring charges		1	$ 4
Corporate and Unallocated | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges	82
Corporate and Unallocated | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges	42
Corporate and Unallocated | 2019 Restructuring Actions | Asset-Related
Restructuring Cost and Reserve
Operating restructuring charges	40
Corporate and Unallocated | 2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, number of positions affected | individual			1,200
Restructuring charges			$ 105
Pre-tax charge related to exit activities		22
Adjustments for reductions in cost estimates		$ 10
Safety and Industrial | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges	11
Safety and Industrial | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges	11
Transportation and Electronics | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges	8
Transportation and Electronics | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges	8
Health Care | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges	6
Health Care | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges	6
Consumer | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges	5
Consumer | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges	$ 5