XML 106 R59.htm IDEA: XBRL DOCUMENT v2.4.1.9
Federal Funds Sold and Securities Borrowed or Purchased Under Agreements to Resell Netting of financial instruments - repurchase agreements (parenthetical) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Assets Sold under Agreements to Repurchase [Line Items]    
Federal Funds Sold $ 38us-gaap_FederalFundsSold $ 75us-gaap_FederalFundsSold