Goodwill and Other Intangible Assets (Schedule of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill balance	$ 4,529	$ 4,713	$ 4,616
Goodwill adjustments and acquisitions	(184)	97
Agriculture [Member]
Goodwill [Line Items]
Goodwill balance	318	330	231
Goodwill adjustments and acquisitions	(12)	99
Electronics & Communications [Member]
Goodwill [Line Items]
Goodwill balance	149	149	149
Goodwill adjustments and acquisitions	0	0
Industrial Biosciences [Member]
Goodwill [Line Items]
Goodwill balance	847	898	890
Goodwill adjustments and acquisitions	(51)	8
Nutrition & Health [Member]
Goodwill [Line Items]
Goodwill balance	2,193	2,315	2,314
Goodwill adjustments and acquisitions	(122)	1
Performance Chemicals [Member]
Goodwill [Line Items]
Goodwill balance	197	198	198
Goodwill adjustments and acquisitions	(1)	0
Performance Materials [Member]
Goodwill [Line Items]
Goodwill balance	375	375	388
Goodwill adjustments and acquisitions	0	(13)
Safety & Protection [Member]
Goodwill [Line Items]
Goodwill balance	450	448	446
Goodwill adjustments and acquisitions	$ 2	$ 2