Loans (Schedule Of Segment Loans And Leases Held For Investment Based On Obligor Location) (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010
Total Loans	$ 22,284.7	$ 24,500.5	$ 29,388.6
Domestic [Member]
Total Loans	18,410.5	20,430.6
Domestic [Member] | Consumer [Member]
Finance receivables Consumer Total	7,009.4	8,058.8
Domestic [Member] | Corporate Finance [Member]
Finance receivables Commercial Total	5,630.1	6,482.4
Domestic [Member] | Transportation Finance [Member]
Finance receivables Commercial Total	1,024.7	1,098.8
Domestic [Member] | Trade Finance [Member]
Finance receivables Commercial Total	2,387.2	2,207.7
Domestic [Member] | Vendor Finance [Member]
Finance receivables Commercial Total	2,359.1	2,582.9
Foreign [Member]
Total Loans	3,874.2	4,069.9
Foreign [Member] | Consumer [Member]
Finance receivables Consumer Total	16.3	17.1
Foreign [Member] | Corporate Finance [Member]
Finance receivables Commercial Total	1,793.8	1,999.8
Foreign [Member] | Transportation Finance [Member]
Finance receivables Commercial Total	331.6	290.1
Foreign [Member] | Trade Finance [Member]
Finance receivables Commercial Total	151.2	179.7
Foreign [Member] | Vendor Finance [Member]
Finance receivables Commercial Total	1,581.3	1,583.2
Consumer [Member]
Finance receivables Consumer Total	7,025.7	8,075.9
Total Loans	7,025.7
Corporate Finance [Member]
Finance receivables Commercial Total	7,423.9	8,482.2
Transportation Finance [Member]
Finance receivables Commercial Total	1,356.3	1,388.9
Trade Finance [Member]
Finance receivables Commercial Total	2,538.4	2,387.4
Vendor Finance [Member]
Finance receivables Commercial Total	$ 3,940.4	$ 4,166.1