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INVESTMENTS (Details - Purchased Credit Impaired (PCI) Securities) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Purchased Credit Impaired (PCI) Securities      
Amortized cost $ 249,200   $ 248,531
Fair value 266,815   261,930
Purchased Credit Impaired (PCI) Securities
     
Purchased Credit Impaired (PCI) Securities      
Contractually required payments (principal and interest) 27,484    
Cash flows expected to be collected 21,919    
Recorded investment in acquired securities 14,437    
Outstanding principal balance 15,923   14,741
Amortized cost 11,235   10,110
Fair value 12,547   11,338
Changes in activity for the accretable yield on PCI securities:      
Balance, beginning of year 6,940 4,766  
Newly purchased PCI securities 522 345  
Disposals 0 (60)  
Accretion (212) (160)  
Effect of changes in interest rate indices (59) 84  
Net reclassification from non-accretable difference, including effects of prepayments (21) 139  
Balance, end of year $ 7,170 $ 5,114