Employee Separation / Asset Related Charges, Net Employee Separation / Asset Related Charges, Net (Narrative) (Details) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			12 Months Ended				3 Months Ended
	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 277			$ 277
Charge associated with restructuring actions			19
Restructuring charges	299			440			134
Restructuring reserve, accrual adjustment						(16)
2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	268			268
Restructuring charges				562				263
Restructuring Program 2012 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges							234
Agriculture [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				134			11
Agriculture [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				134
Electronics & Communications [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				84			9
Electronics & Communications [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				84
Industrial Biosciences [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				13			3
Industrial Biosciences [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				13
Nutrition & Health [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				15			49
Nutrition & Health [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				15
Performance Chemicals [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				21			3
Performance Chemicals [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				21
Performance Materials [Member]
Restructuring Cost and Reserve [Line Items]
Charge associated with restructuring actions						19
Restructuring charges				99			12
Performance Materials [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				99
Safety & Protection [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				52			58
Safety & Protection [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				52
Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				22			(11)
Other [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				22
Employee Separation / Asset Related Charges, Net [Member]
Restructuring Cost and Reserve [Line Items]
Charge associated with restructuring actions			9
Restructuring charges				375
Restructuring reserve, accrual adjustment			(24)
Employee Separation / Asset Related Charges, Net [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	234			497
Employee Separation / Asset Related Charges, Net [Member] | Performance Materials [Member]
Restructuring Cost and Reserve [Line Items]
Charge associated with restructuring actions						9
Other income, net [Member]
Restructuring Cost and Reserve [Line Items]
Charge associated with restructuring actions			10
Other income, net [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Charge associated with restructuring actions	65			65
Other income, net [Member] | Performance Materials [Member]
Restructuring Cost and Reserve [Line Items]
Charge associated with restructuring actions						10
Other income, net [Member] | Performance Materials [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Charge associated with restructuring actions				65
Corporate Expenses [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				122
Employee Severance [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	264			264
Restructuring charges				319
Employee Severance [Member] | Restructuring Program 2012 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges							157
Other Non-Personnel Charges [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	4	[1]		4	[1]
Restructuring charges				17	[1]
Other Non-Personnel Charges [Member] | Restructuring Program 2012 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges							8
Asset Related [Member] | 2014 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	0			0
Restructuring charges				226
Asset Related [Member] | Restructuring Program 2012 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges							69
Asset Impairment Charges [Member] | Asset Related [Member] | Restructuring Program 2012 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges							30
Asset Shut Down Charges [Member] | Asset Related [Member] | Restructuring Program 2012 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges							$ 39

[1] Other non-personnel charges consist of contractual obligation costs.