Restructuring Actions (Details) $ in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2019 USD ($) person	Jun. 30, 2019 USD ($) person	Dec. 31, 2018 USD ($)	Jun. 30, 2018 USD ($) individual	Jun. 30, 2017 USD ($) item	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
2019 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, number of positions affected | person	1,500	2,000
Restructuring charges	$ 134	$ 148
Operating restructuring charges						$ 246
Total income before income taxes impact						282
2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges						206
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						72
2019 Restructuring Actions | Selling, general and administrative expenses
Restructuring Cost and Reserve
Restructuring charges						137
2019 Restructuring Actions | Research, development and related expenses
Restructuring Cost and Reserve
Restructuring charges						37
2019 Restructuring Actions | Other expense (income), net
Restructuring Cost and Reserve
Restructuring charges						36
2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, number of positions affected | individual				1,200
Restructuring charges			$ 22	$ 105			$ 137
Adjustments for reductions in cost estimates			$ 10
2018 Restructuring Actions | Cost of sales
Restructuring Cost and Reserve
Restructuring charges							27
2018 Restructuring Actions | Selling, general and administrative expenses
Restructuring Cost and Reserve
Restructuring charges							105
2018 Restructuring Actions | Research, development and related expenses
Restructuring Cost and Reserve
Restructuring charges							$ 5
2017 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, number of positions affected | item					1,300
Pre-tax charge related to exit activities					$ 99
2017 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Restructuring charges					99
2017 Restructuring Actions | Cost of sales
Restructuring Cost and Reserve
Pre-tax charge related to exit activities					86
2017 Restructuring Actions | Selling, general and administrative expenses
Restructuring Cost and Reserve
Pre-tax charge related to exit activities					5
2017 Restructuring Actions | Research, development and related expenses
Restructuring Cost and Reserve
Pre-tax charge related to exit activities					8
Corporate and Unallocated | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges						140
Corporate and Unallocated | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges						100
Corporate and Unallocated | 2019 Restructuring Actions | Asset-Related
Restructuring Cost and Reserve
Operating restructuring charges						40
Corporate and Unallocated | 2017 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Restructuring charges					6
Safety and Industrial | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges						50
Safety and Industrial | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges						50
Safety and Industrial | 2017 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Restructuring charges					45
Transportation and Electronics | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges						31
Transportation and Electronics | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges						31
Transportation and Electronics | 2017 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Restructuring charges					10
Health Care | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges						17
Health Care | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges						17
Health Care | 2017 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Restructuring charges					2
Consumer | 2019 Restructuring Actions
Restructuring Cost and Reserve
Operating restructuring charges						8
Consumer | 2019 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Operating restructuring charges						$ 8
Consumer | 2017 Restructuring Actions | Employee-Related
Restructuring Cost and Reserve
Restructuring charges					$ 36