Employee Separation / Asset Related Charges, Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 206
2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	263
2014 Restructuring Program [Member] | Corporate Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	57
2014 Restructuring Program [Member] | Agriculture [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	47
2014 Restructuring Program [Member] | Electronics and Communications [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	68
2014 Restructuring Program [Member] | Industrial Biosciences [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2
2014 Restructuring Program [Member] | Nutrition and Health [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8
2014 Restructuring Program [Member] | Performance Chemicals [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	19
2014 Restructuring Program [Member] | Performance Materials [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	29
2014 Restructuring Program [Member] | Safety and Protection [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	31
2014 Restructuring Program [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2
Employee Severance [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	166
Other Non-Personnel Charges [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3
Asset Shut Down Charges [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 94