Restructuring Actions and Exit Activities (Details) $ in Millions	3 Months Ended
	Jun. 30, 2018 USD ($) individual	Jun. 30, 2017 USD ($) individual	Mar. 31, 2017 USD ($)
Employee-Related
Restructuring Cost and Reserve
Pre-tax charge related to exit activities			$ 24
2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring charges	$ 105
2018 Restructuring Actions | Cost of sales
Restructuring Cost and Reserve
Restructuring charges	12
2018 Restructuring Actions | Selling, general and administrative expenses
Restructuring Cost and Reserve
Restructuring charges	89
2018 Restructuring Actions | Research, development and related expenses
Restructuring Cost and Reserve
Restructuring charges	$ 4
2017 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, number of positions affected | individual		1,300
Restructuring charges		$ 99
Corporate and Unallocated | 2018 Restructuring Actions
Restructuring Cost and Reserve
Restructuring and related cost, number of positions affected | individual	900
Restructuring charges	$ 105