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Debt (Schedule of Outstanding Term ABS Financings) (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended
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Jun. 30, 2014
Term ABS 2011-1 [Member] |  |
Debt Instrument [Line Items] |  |
Close Date | Oct. 06, 2011 |
Net Book Value of Loans Contributed at Closing | $ 250.8 |
Maturity Date | Sep. 16, 2013 | [1],[2]
Term ABS 2012-1 [Member] |  |
Debt Instrument [Line Items] |  |
Close Date | Mar. 29, 2012 |
Net Book Value of Loans Contributed at Closing | 251.7 |
Maturity Date | Mar. 17, 2014 | [1],[2]
Term ABS 2012-2 [Member] |  |
Debt Instrument [Line Items] |  |
Close Date | Sep. 20, 2012 |
Net Book Value of Loans Contributed at Closing | 315.1 |
Maturity Date | Sep. 15, 2014 | [1],[2]
Term ABS 2013-1 [Member] |  |
Debt Instrument [Line Items] |  |
Close Date | Apr. 25, 2013 |
Net Book Value of Loans Contributed at Closing | 187.8 |
Maturity Date | Apr. 15, 2015 | [1],[2]
Term ABS 2013-2 [Member] |  |
Debt Instrument [Line Items] |  |
Close Date | Oct. 31, 2013 |
Net Book Value of Loans Contributed at Closing | 250.1 |
Maturity Date | Oct. 15, 2015 | [1],[2]
Term ABS 2014-1 [Member] |  |
Debt Instrument [Line Items] |  |
Close Date | Apr. 16, 2014 |
Net Book Value of Loans Contributed at Closing | $ 374.7 |
Maturity Date | Apr. 15, 2016 | [1],[2]
[1] | Financing made available only to a specified subsidiary of the Company.
[2] | Represents the revolving maturity date. The outstanding balance will amortize after the maturity date based on the cash flows of the pledged assets.

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- Definition Debt financing close date + References No definition available. + Details
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Period Type: | duration

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- Definition Net Book Value Of Loans Pledged As Collateral + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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