Annual report pursuant to Section 13 and 15(d)

Allowance for Credit Losses - Allowance by Portfolio Segment (Details)

v3.3.1.900
Allowance for Credit Losses - Allowance by Portfolio Segment (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Allowance for Loan and Lease Losses [Roll Forward]      
Allowance for loan and lease losses, January 1 $ 14,419 $ 17,428 $ 24,179
Loans and leases charged off (6,105) (7,026) (10,369)
Recoveries of loans and leases previously charged off 1,767 2,643 2,472
Net charge-offs (4,338) (4,383) (7,897)
Provision for loan and lease losses 3,043 2,231 3,574
Other (82) (47) (92)
Allowance for loan and lease losses, December 31 12,234 14,419 17,428
Reserve for unfunded lending commitments, January 1 14,947 17,912  
Provision for unfunded lending commitments 3,161 2,275 3,556
Reserve for unfunded lending commitments, December 31 12,880 14,947 17,912
Allowance for credit losses 14,947 17,912 17,912
Unfunded loan commitments      
Allowance for Loan and Lease Losses [Roll Forward]      
Other     (11)
Reserve for unfunded lending commitments, January 1 528 484 513
Provision for unfunded lending commitments 118 44 (18)
Reserve for unfunded lending commitments, December 31 646 528 484
Allowance for credit losses 528 484 513
Purchased Credit-impaired      
Allowance for Loan and Lease Losses [Roll Forward]      
Loans and leases charged off (808) (810) (2,336)
Provision for loan and lease losses (40) (31) (707)
Reserve for unfunded lending commitments, January 1 1,652 2,500  
Reserve for unfunded lending commitments, December 31 804 1,652 2,500
Allowance for credit losses 1,652 2,500 2,500
Consumer Real Estate      
Allowance for Loan and Lease Losses [Roll Forward]      
Allowance for loan and lease losses, January 1 5,935 8,518 14,933
Loans and leases charged off (1,841) (2,219) (3,766)
Recoveries of loans and leases previously charged off 732 1,426 879
Net charge-offs (1,109) (793) (2,887)
Provision for loan and lease losses (70) (976) (1,124)
Other (34) (4) (68)
Allowance for loan and lease losses, December 31 3,914 5,935 8,518
Reserve for unfunded lending commitments, January 1 5,935 8,518  
Reserve for unfunded lending commitments, December 31 3,914 5,935 8,518
Allowance for credit losses 5,935 8,518 8,518
Consumer Real Estate | Unfunded loan commitments      
Allowance for Loan and Lease Losses [Roll Forward]      
Other     0
Reserve for unfunded lending commitments, January 1 0 0 0
Provision for unfunded lending commitments 0 0 0
Reserve for unfunded lending commitments, December 31 0 0 0
Allowance for credit losses 0 0 0
Consumer Real Estate | Purchased Credit-impaired      
Allowance for Loan and Lease Losses [Roll Forward]      
Loans and leases charged off (808) (810) (2,336)
Reserve for unfunded lending commitments, January 1 1,652    
Reserve for unfunded lending commitments, December 31 804 1,652  
Allowance for credit losses 1,652 1,652  
Credit card and other consumer      
Allowance for Loan and Lease Losses [Roll Forward]      
Allowance for loan and lease losses, January 1 4,047 4,905 6,140
Loans and leases charged off (3,620) (4,149) (5,495)
Recoveries of loans and leases previously charged off 813 871 1,141
Net charge-offs (2,807) (3,278) (4,354)
Provision for loan and lease losses 2,278 2,458 3,139
Other (47) (38) (20)
Allowance for loan and lease losses, December 31 3,471 4,047 4,905
Reserve for unfunded lending commitments, January 1 4,047 4,905  
Reserve for unfunded lending commitments, December 31 3,471 4,047 4,905
Allowance for credit losses 4,047 4,905 4,905
Credit card and other consumer | Unfunded loan commitments      
Allowance for Loan and Lease Losses [Roll Forward]      
Other     0
Reserve for unfunded lending commitments, January 1 0 0 0
Provision for unfunded lending commitments 0 0 0
Reserve for unfunded lending commitments, December 31 0 0 0
Allowance for credit losses 0 0 0
Credit card and other consumer | Purchased Credit-impaired      
Allowance for Loan and Lease Losses [Roll Forward]      
Loans and leases charged off 0 0 0
Commercial      
Allowance for Loan and Lease Losses [Roll Forward]      
Allowance for loan and lease losses, January 1 4,437 4,005 3,106
Loans and leases charged off (644) (658) (1,108)
Recoveries of loans and leases previously charged off 222 346 452
Net charge-offs (422) (312) (656)
Provision for loan and lease losses 835 749 1,559
Other (1) (5) (4)
Allowance for loan and lease losses, December 31 4,849 4,437 4,005
Reserve for unfunded lending commitments, January 1 4,965 4,489  
Reserve for unfunded lending commitments, December 31 5,495 4,965 4,489
Allowance for credit losses 4,965 4,489 4,489
Commercial | Unfunded loan commitments      
Allowance for Loan and Lease Losses [Roll Forward]      
Other     (11)
Reserve for unfunded lending commitments, January 1 528 484 513
Provision for unfunded lending commitments 118 44 (18)
Reserve for unfunded lending commitments, December 31 646 528 484
Allowance for credit losses 528 484 513
Commercial | Purchased Credit-impaired      
Allowance for Loan and Lease Losses [Roll Forward]      
Loans and leases charged off $ 0 $ 0 $ 0