XML 115 R66.htm IDEA: XBRL DOCUMENT v2.4.0.6
Financial Instruments with Off-Balance Sheet Risk and Concentrations of Credit Risk - Obligations to Purchase Financial Instruments at a Future Date (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Sep. 30, 2011
Financial Instruments with Off-Balance Sheet Risk and Concentrations of Credit Risk [Abstract]    
Financial Instruments Sold, Not yet Purchased, at Fair Value $ 175.4 $ 390.9
Derivatives Liabilties $ 44.6