Restructuring, Impairment And Other Charges (Credits) (Details) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010	Dec. 31, 2009
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 12.0	$ 37.0	$ 27.0	$ 100.0
Non-cash adjustments		(2)
Net charges/(reversals)		(3)
Cash payments	(15.0)	(58.0)
Employee Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	3.0	23.0	15.0	80.0
Non-cash adjustments		(2)
Net charges/(reversals)		(3)
Cash payments	(12.0)	(52.0)
Other Charges (Credits) [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	9.0	14.0	12.0	20.0
Cash payments	$ (3.0)	$ (6.0)