Consolidated Statements Of Operations (Parenthetical) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Defined benefit plan adjustments, tax	$ 12.2	[1]	$ 0.6	[1]	$ (9.4)	[1]
Change in fair value of derivatives, tax	8.2	[1]	(8.4)	[1]	(37.3)	[1]
Company deferred stock held in rabbi trust gain, tax					$ (0.1)	[1]

[1] See Note 22 -Restatement of Consolidated Financial Statements