v2.4.0.8
Collateralized Transactions (Narrative) (Details) (USD $)
Jun. 30, 2014
Dec. 31, 2013
Disclosure Collateralized Transactions [Abstract]    
Customer margin loans outstanding $ 15,326,943,000 $ 13,596,650,000
Securities repledged and deposited for customers $ 5,910,000,000 $ 6,730,000,000
Percentage of securities repledged and deposited for customers 96.00% 95.00%