Contingencies (Trial Results Narrative) (Details) (Since January 1999 [Member], USD $) In Millions, unless otherwise specified		166 Months Ended
	Sep. 30, 2012	Oct. 25, 2012 Engle and Non-Engle Cases [Member]
Loss Contingencies [Line Items]
Number of verdicts returned	51
Verdicts returned in favor of defendants	34
Verdicts returned in favor of plaintiffs	17
Cases reaching final resolution	15
Judgments paid		$ 242
Judgment interest paid aggregate		$ 139