Consolidated Balance Sheet Parentheticals (USD $) In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accounts Receivable, Net [Abstract]
Accounts Receivable, Allowance	$ 1.0	$ 1.0
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common Stock, Par Value	$ 0.00	$ 0.00
Common Stock, Shares Authorized	80.0	80.0
Common Stock, Shares Outstanding	39.9	39.4