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Debt (Schedule of Outstanding Term ABS Financings) (Details) - Jun. 30, 2015 - USD ($) $ in Millions | Total
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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 | [1],[2] | Sep. 15, 2014
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 | [1],[2] | Apr. 15, 2015
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 | [1],[2] | Oct. 15, 2015
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 | [1],[2] | Apr. 15, 2016
Term ABS 2014-2 [Member] |  |
Debt Instrument [Line Items] |  |
Close Date |  | Sep. 25, 2014
Net Book Value of Loans Contributed at Closing |  | $ 437.6
Maturity Date | [1],[2] | Sep. 15, 2016
Term ABS 2015-1 [Member] |  |
Debt Instrument [Line Items] |  |
Close Date |  | Jan. 29, 2015
Net Book Value of Loans Contributed at Closing |  | $ 375.9
Maturity Date | [1],[2] | Jan. 16, 2017
[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 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 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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