Annual report pursuant to Section 13 and 15(d)

Allowance for Credit Losses - Additional Information (Details)

v3.3.1.900
Allowance for Credit Losses - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision (benefit) for loan and lease losses $ 3,043 $ 2,231 $ 3,574
Loans and leases charged off 6,105 7,026 10,369
Allowance for credit losses 12,880 14,947 17,912
Purchased Credit-impaired      
Financing Receivable, Allowance for Credit Losses [Line Items]      
Provision (benefit) for loan and lease losses (40) (31) (707)
Loans and leases charged off 808 810 2,336
Financing receivable allowance sold 234 317 414
Allowance for credit losses $ 804 $ 1,652 $ 2,500