Employee Separation / Asset Related Charges, Net (Asset Impairments) (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charge	$ 242	$ 242
Nonrecurring fair value measurement	125	125
Electronics and Communications [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charge	150	150
Performance Materials [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charge	$ 92	$ 92