Subsequent Events (Details) (USD $) In Millions, except Share data, unless otherwise specified	2 Months Ended
	Dec. 31, 2012	Oct. 23, 2012
Subsequent Event [Line Items]
Business Acquisition, Date of Acquisition Agreement	October 23, 2012
Business Aquisition, Cost of Acquired Entity Cash Consideration Per Share		$ 2.67
Common Stock, Par or Stated Value Per Share		$ 84.0
Common Stock, Shares Authorized		0.317
Business acquisition, aggregrate consideration transferred for each common share		$ 8.00
Business Aquisition, Common Shares Expected To Be Issued		9,900,000
Business Aquisition, Aggregate Repayment of Senior Notes and Revolving Line of Credit		131.0
Business Aquisition, Aggregate Other Debt Assumed		11.0
Increase In Common Share Repurchase Authorization		13,200,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		20,000,000
Common Stock, Value, Issued		$ 167