Goodwill and Long -Lived Asset Impairment (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Goodwill and Long -Lived Asset Impairment (Textual) [Abstract]
Property, plant and equipment impairment		$ 5.1	$ 0
Goodwill impairment	7.6	7.6	0	0
Customer Relationships [Member]
Goodwill And Long Lived Asset Impairment [Line Items]
Amortizable customer relationship		$ 1.6