Contingencies (Trial Results Narrative) (Details) (Since January 1999 [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2011
Since January 1999 [Member]
Verdicts returned	49
Verdicts returned in favor of defendants	33
Verdicts returned in favor of plaintiffs	16
Cases reaching final resolution	12
Cases reaching partial resolution	1
Judgments paid	$ 116.4
Judgment interest paid aggregate	$ 70.6