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INVESTMENTS (Details - Purchased Credit Impaired (PCI) Securities) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Purchased Credit Impaired (PCI) Securities          
Amortized cost $ 248,923   $ 248,923   $ 248,531
Fair value 270,352   270,352   261,930
Purchased Credit Impaired (PCI) Securities
         
Purchased Credit Impaired (PCI) Securities          
Contractually required payments (principal and interest) 28,482   28,482    
Cash flows expected to be collected 22,778   22,778    
Recorded investment in acquired securities 15,049   15,049    
Outstanding principal balance 16,272   16,272   14,741
Amortized cost 11,559   11,559   10,110
Fair value 12,998   12,998   11,338
Changes in activity for the accretable yield on PCI securities:          
Balance, beginning of year 7,170 5,114 6,940 4,766  
Newly purchased PCI securities 247 761 769 1,106  
Disposals 0 0 0 (60)  
Accretion (219) (170) (431) (330)  
Effect of changes in interest rate indices (172) 22 (231) 106  
Net reclassification from non-accretable difference, including effects of prepayments 16 174 (5) 313  
Balance, end of year $ 7,042 $ 5,901 $ 7,042 $ 5,901