v2.4.0.6
Securities Available for Sale, Realized Gains and Losses (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]    
Gross realized gains $ 156 $ 281
Gross realized losses (5) (4)
OTTI Write-downs (38) (51)
Net realized gains from securities available for sale 113 226
Net realized gains from private equity investments 45 131
Net realized gains from debt securities and equity investments $ 158 $ 357