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Subsequent Events (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended | 0 Months Ended
--- | --- | ---
Jun. 30, 2013 10.00% Senior Unsecured Notes due 2017 | Jul. 15, 2013 Subsequent Event Debt
Subsequent Event [Line Items] |  |
Redemption Date of 10.00% Notes | Jul. 15, 2013 |
Extinguishment of Debt, Amount |  | $ 600.0
Stated Interest Rate | 10.00% |
Loss on Extinguishment of Debt |  | 45.2
Write off of Unamortized Discount |  | 7.3
Write off of Deferred Debt Issuance Cost |  | 7.9
Redemption Premium |  | 30.0
Total Cash Paid to Redeem Debt |  | $ 630.0

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