Quarterly report pursuant to Section 13 or 15(d)

Allowance for Credit Losses (Details)

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Allowance for Credit Losses (Details) (USD $)
 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Home Loans [Member]
Jun. 30, 2012
Home Loans [Member]
Jun. 30, 2013
Home Loans [Member]
Jun. 30, 2012
Home Loans [Member]
Jun. 30, 2013
Credit Card and Other Consumer [Member]
Jun. 30, 2012
Credit Card and Other Consumer [Member]
Jun. 30, 2013
Credit Card and Other Consumer [Member]
Jun. 30, 2012
Credit Card and Other Consumer [Member]
Jun. 30, 2013
Commercial [Member]
Jun. 30, 2012
Commercial [Member]
Jun. 30, 2013
Commercial [Member]
Jun. 30, 2012
Commercial [Member]
Jun. 30, 2013
Purchased Credit Impaired Loans [Member]
Jun. 30, 2012
Purchased Credit Impaired Loans [Member]
Jun. 30, 2013
Purchased Credit Impaired Loans [Member]
Jun. 30, 2012
Purchased Credit Impaired Loans [Member]
Jun. 30, 2013
Purchased Credit Impaired Loans [Member]
Home Loans [Member]
Dec. 31, 2012
Purchased Credit Impaired Loans [Member]
Home Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]                                            
Allowance for Loan and Lease Losses, Loans Acquired                                 $ (252,000,000) $ 6,000,000 $ (459,000,000) $ 493,000,000    
Allowance for Loan and Lease Losses [Roll Forward]                                            
Allowance for Loan and Lease Losses, beginning balance 22,441,000,000 32,211,000,000 24,179,000,000 33,783,000,000 13,438,000,000 20,973,000,000 14,933,000,000 21,079,000,000 5,874,000,000 7,664,000,000 6,140,000,000 8,569,000,000 3,129,000,000 3,574,000,000 3,106,000,000 4,135,000,000     5,536,000,000   3,925,000,000 5,536,000,000
Loans and Leases Charged Off (2,750,000,000) (4,411,000,000) (5,812,000,000) (9,191,000,000) (936,000,000) (1,769,000,000) (2,129,000,000) (3,776,000,000) (1,489,000,000) (2,020,000,000) (3,042,000,000) (4,262,000,000) (325,000,000) (622,000,000) (641,000,000) (1,153,000,000)            
Recoveries of Loans and Leases Previously Charged Off (639,000,000) (785,000,000) (1,184,000,000) (1,509,000,000) (179,000,000) (127,000,000) (305,000,000) (263,000,000) (331,000,000) (411,000,000) (649,000,000) (837,000,000) (129,000,000) (247,000,000) (230,000,000) (409,000,000)            
Net Charge-Offs (2,111,000,000) (3,626,000,000) (4,628,000,000) (7,682,000,000) (757,000,000) (1,642,000,000) (1,824,000,000) (3,513,000,000) (1,158,000,000) (1,609,000,000) (2,393,000,000) (3,425,000,000) (196,000,000) (375,000,000) (411,000,000) (744,000,000)            
Provision for Loan and Lease Losses 1,220,000,000 1,840,000,000 2,951,000,000 4,297,000,000 27,000,000 679,000,000 511,000,000 2,444,000,000 957,000,000 1,054,000,000 1,964,000,000 1,933,000,000 236,000,000 107,000,000 476,000,000 (80,000,000)            
Write-offs of PCI loans (313,000,000)   (1,152,000,000)   (313,000,000)   (1,152,000,000)   0   0   0   0   313,000,000 0 1,200,000,000 0    
Other (2,000,000) [1] (137,000,000) [1] (115,000,000) [1] 110,000,000 [1] 1,000,000 [1] (46,000,000) [1] (72,000,000) [1] 46,000,000 [1] (2,000,000) [1] (85,000,000) [1] (40,000,000) [1] 53,000,000 [1] (1,000,000) [1] (6,000,000) [1] (3,000,000) [1] 11,000,000 [1]            
Allowance for Loan and Lease Losses, ending balance 21,235,000,000 30,288,000,000 21,235,000,000 30,288,000,000 12,396,000,000 19,964,000,000 12,396,000,000 19,964,000,000 5,671,000,000 7,024,000,000 5,671,000,000 7,024,000,000 3,168,000,000 3,300,000,000 3,168,000,000 3,300,000,000 3,925,000,000 [2]   3,925,000,000 [2]   3,925,000,000 5,536,000,000
Reserve For Unfunded Lending Commitments, beginning balance 486,000,000 651,000,000 513,000,000 714,000,000    0    0    0    0 486,000,000 651,000,000 513,000,000 714,000,000            
Provision for unfunded lending commitments (9,000,000) (67,000,000) (27,000,000) (106,000,000)    0    0    0    0 (9,000,000) (67,000,000) (27,000,000) (106,000,000)            
Other (3,000,000) [3] (10,000,000) [3] (12,000,000) [3] (34,000,000) [3]    [3] 0 [3]    [3] 0 [3]    [3] 0 [3]    [3] 0 [3] (3,000,000) [3] (10,000,000) [3] (12,000,000) [3] (34,000,000) [3]            
Reserve For Unfunded Lending Commitments, ending balance 474,000,000 574,000,000 474,000,000 574,000,000    0    0    0    0 474,000,000 574,000,000 474,000,000 574,000,000            
Allowance For Credit Losses, March 31 $ 21,709,000,000 $ 30,862,000,000 $ 21,709,000,000 $ 30,862,000,000 $ 12,396,000,000 $ 19,964,000,000 $ 12,396,000,000 $ 19,964,000,000 $ 5,671,000,000 $ 7,024,000,000 $ 5,671,000,000 $ 7,024,000,000 $ 3,642,000,000 $ 3,874,000,000 $ 3,642,000,000 $ 3,874,000,000            
[1] Primarily represents the net impact of portfolio sales, consolidations and deconsolidations, and foreign currency translation adjustments.
[2] Impaired loans include nonperforming commercial loans and all TDRs, including both commercial and consumer TDRs. Impaired loans exclude nonperforming consumer loans unless they are TDRs, and all consumer and commercial loans accounted for under the fair value option.
[3] Primarily represents accretion of the Merrill Lynch purchase accounting adjustment.