Other Non-Operating Income (Expense), Net (Summary Of Other Non-Operating Income (Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Other Non-Operating Income (Expense), Net [Abstract]
FX gain/(loss)	$ 2.6	$ (5.1)	$ (9.5)
Legacy Tax (see Note 18)	6.4
Joint venture income	6.8	2.8	6.1
Other	(2.3)	(3.6)	(4.5)
Total	$ 13.5	$ (5.9)	$ (7.9)