Debt (Scheduled Principal Maturities Of Debt) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
2013	$ 150.2
2014	443.2
2015	225.8
2016	81.3
2017	350.0
Total	1,250.5
Revolving Secured Line Of Credit [Member]
2015	43.5
Total	43.5
Warehouse Facilities [Member]
2014	37.6
2016	81.3
Total	118.9
Term ABS Financings [Member]
2013	150.0	[1]
2014	401.8	[1]
2015	182.3	[1]
Total	734.1	[1]
Senior Notes [Member]
2017	350.0	[2]
Total	350.0	[2]
Unamortized debt premium net	0.3		0.4
Mortgage Note [Member]
2013	0.2
2014	3.8
Total	$ 4.0

[1] The principal maturities of the Term ABS transactions are estimated based on forecasted collections.

[2] The amounts are presented on a gross basis to exclude the net unamortized debt premium of $0.3 million.