Commitments and Contingencies (Plumbing Actions Narrative) (Details) (USD $) In Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Loss Contingencies [Line Items]
Plumbing actions other (charges) gains	$ 2	$ 26	$ 6	$ 40
Advanced Engineered Materials [Member] | Plumbing Actions [Member]
Loss Contingencies [Line Items]
Plumbing actions other (charges) gains	2	26	6	40	59
Legal reserve reductions	$ 2	$ 26	$ 4	$ 27