Income Taxes (Schedule Of Transactions Affecting The Valuation Allowance On Deferred Tax Assets) (Details) (Valuation Allowance Of Deferred Tax Assets [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Valuation Allowance Of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance, beginning of year	$ 259.5	$ 277.5	$ 224.7
Current year expense (benefit)	2.4	(9.6)	69.0
Write-offs	(1.8)	(9.4)	(29.8)
Foreign exchange and other	13.1	1.0	13.6
Balance, end of year	$ 273.2	$ 259.5	$ 277.5