XML 36 R71.htm IDEA: XBRL DOCUMENT v2.4.0.8
Loans - Delinquency Ratio for Consumer Loan (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Loans Receivable, Net [Abstract]    
Residential mortgage loan delinquency carried at lower of amortized cost or fair value less cost to sell $ 1,041 $ 1,074