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INVESTMENTS (Details - Purchased Credit Impaired (PCI) Securities) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Available-for-sale Securities Disclosures          
Amortized cost $ 249,920   $ 249,920   $ 248,531
Fair value 270,130   270,130   261,930
Purchased Credit Impaired (PCI) Securities
         
Available-for-sale Securities Disclosures          
Contractually required payments (principal and interest) 29,851   29,851    
Cash flows expected to be collected 23,983   23,983    
Recorded investment in acquired securities 15,896   15,896    
Outstanding principal balance 16,883   16,883   14,741
Amortized cost 12,097   12,097   10,110
Fair value 13,489   13,489   11,338
Changes in activity for the accretable yield on PCI securities:          
Balance, beginning of year 7,042 5,901 6,940 4,766  
Newly purchased PCI securities 358 202 1,127 1,308  
Disposals 0 0 0 (60)  
Accretion (223) (187) (654) (517)  
Effect of changes in interest rate indices (96) 282 (327) 388  
Net reclassification from non-accretable difference, including effects of prepayments 30 405 25 718  
Balance, end of year $ 7,111 $ 6,603 $ 7,111 $ 6,603