Condensed Consolidated Balance Sheets Parenthetical (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts Receivable, Current	$ 12.2	$ 11.6
Preferred Stock, Shares Authorized	2,357,299	2,357,299
Preferred Stock, Shares Issued	155,250	155,250
Preferred Stock, Shares Outstanding	155,250	155,250
Preferred Stock, Depositary Shares	3,105,000	3,105,000
Preferred Stock, Liquidation Preference Per Share	$ 1,000	$ 1,000
Preferred Stock Liquidation Depositary Per Shares	$ 50	$ 50
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	480,000,000	480,000,000
Common Stock, Shares, Issued	197,864,910	196,322,649
Common Stock, Shares, Outstanding	197,373,191	195,721,796