XML 85 R93.htm IDEA: XBRL DOCUMENT v2.4.0.8
Netting Arrangements for Certain Financial Instruments - Additional Information (Detail) (USD $)
In Billions, unless otherwise specified
Jun. 30, 2014
Derivatives, Fair Value [Line Items]  
Notional amount of derivative $ 122.8
Exchange Cleared [Member]
 
Derivatives, Fair Value [Line Items]  
Notional amount of derivative 23.3
Exchange Traded [Member]
 
Derivatives, Fair Value [Line Items]  
Notional amount of derivative $ 3.4