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Repurchase of Collateral Finance Facility Notes (Narrative) (Details) (USD $) | 6 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012
Repurchase Of Collateral Finance Facility Notes [Abstract] |  |
Debt Instrument Repurchased Face Amount | $ 160,000,000 |
Repayments of Long-term Debt | 112,000,000 | 0
Gains Losses On Extinguishment Of Collateral Finance Securities | $ 46,500,000 |

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- Definition Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment. + References No definition available. + Details
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- Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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