Debt (Schedule of Outstanding Term ABS Financings) (Details) - Jun. 30, 2015 - USD ($) $ in Millions		Total
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.