Debt (Schedule Of Outstanding Term ABS Financings) (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended
	Mar. 29, 2012	Sep. 20, 2012	Apr. 25, 2013	Oct. 31, 2013	Apr. 16, 2014	Sep. 25, 2014	Dec. 31, 2014	Dec. 31, 2013
Term ABS 2012-1 [Member]
Debt Instrument [Line Items]
Close date, secured financings	Mar. 29, 2012
Loans pledged as collateral	$ 251.7						$ 145.1	$ 240.4
Term ABS 2012-2 [Member]
Debt Instrument [Line Items]
Close date, secured financings		Sep. 20, 2012
Loans pledged as collateral		315.1					278.6	303.8
Term ABS 2013-1 [Member]
Debt Instrument [Line Items]
Close date, secured financings			Apr. 25, 2013
Loans pledged as collateral			187.8				186.7	184.3
Term ABS 2013-2 [Member]
Debt Instrument [Line Items]
Close date, secured financings				Oct. 31, 2013
Loans pledged as collateral				250.1			248.9	250.5
Term ABS 2014-1 [Member]
Debt Instrument [Line Items]
Close date, secured financings					Apr. 16, 2014
Loans pledged as collateral					374.7
Term ABS 2014-2 [Member]
Debt Instrument [Line Items]
Close date, secured financings						Sep. 25, 2014
Loans pledged as collateral						$ 437.6