|
Loans and Allowance for Credit Losses, Troubled Debt Restructurings Modifications by Type (Details) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2012
|
Dec. 31, 2011
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
$ 1,525 |
$ 2,109 |
| Interest rate reduction |
2,115 |
3,246 |
| Other interest rate concessions |
11,362 |
6,595 |
| Total |
15,002 |
11,950 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
1,176 |
481 |
| Weighted average interest rate reduction |
3.59% |
3.82% |
| Recorded investment related to interest rate reduction |
3,274 |
4,771 |
|
Commercial and Industrial Loans [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
11 |
166 |
| Interest rate reduction |
35 |
64 |
| Other interest rate concessions |
1,370 |
2,412 |
| Total |
1,416 |
2,642 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
40 |
84 |
| Weighted average interest rate reduction |
1.60% |
3.13% |
| Recorded investment related to interest rate reduction |
38 |
69 |
|
Commercial Real Estate Mortgage [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
47 |
113 |
| Interest rate reduction |
219 |
146 |
| Other interest rate concessions |
1,907 |
1,894 |
| Total |
2,173 |
2,153 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
12 |
24 |
| Weighted average interest rate reduction |
1.57% |
1.46% |
| Recorded investment related to interest rate reduction |
226 |
160 |
|
Commercial Real Estate Construction [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
12 |
29 |
| Interest rate reduction |
19 |
114 |
| Other interest rate concessions |
531 |
421 |
| Total |
562 |
564 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
10 |
26 |
| Weighted average interest rate reduction |
1.69% |
0.81% |
| Recorded investment related to interest rate reduction |
19 |
125 |
|
Lease Financing [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
0 |
0 |
| Interest rate reduction |
0 |
0 |
| Other interest rate concessions |
4 |
57 |
| Total |
4 |
57 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
0 |
0 |
| Weighted average interest rate reduction |
0.00% |
0.00% |
| Recorded investment related to interest rate reduction |
0 |
0 |
|
Foreign Loans [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
0 |
0 |
| Interest rate reduction |
0 |
0 |
| Other interest rate concessions |
19 |
22 |
| Total |
19 |
22 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
0 |
0 |
| Weighted average interest rate reduction |
0.00% |
0.00% |
| Recorded investment related to interest rate reduction |
0 |
0 |
|
Total Commercial [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
70 |
308 |
| Interest rate reduction |
273 |
324 |
| Other interest rate concessions |
3,831 |
4,806 |
| Total |
4,174 |
5,438 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
62 |
134 |
| Weighted average interest rate reduction |
1.58% |
1.55% |
| Recorded investment related to interest rate reduction |
283 |
354 |
|
Real estate 1-4 family first mortgage [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
1,371 |
1,629 |
| Interest rate reduction |
1,302 |
1,908 |
| Other interest rate concessions |
5,822 |
934 |
| Total |
8,495 |
4,471 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
547 |
293 |
| Weighted average interest rate reduction |
3.00% |
3.27% |
| Recorded investment related to interest rate reduction |
2,379 |
3,322 |
|
Real estate 1-4 family junior lien mortgage [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
79 |
98 |
| Interest rate reduction |
244 |
559 |
| Other interest rate concessions |
756 |
197 |
| Total |
1,079 |
854 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
512 |
28 |
| Weighted average interest rate reduction |
3.70% |
4.34% |
| Recorded investment related to interest rate reduction |
313 |
654 |
|
Credit Card [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
0 |
0 |
| Interest rate reduction |
241 |
336 |
| Other interest rate concessions |
0 |
0 |
| Total |
241 |
336 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
0 |
2 |
| Weighted average interest rate reduction |
10.85% |
10.77% |
| Recorded investment related to interest rate reduction |
241 |
260 |
|
Other revolving credit and installment [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
5 |
74 |
| Interest rate reduction |
55 |
119 |
| Other interest rate concessions |
287 |
7 |
| Total |
347 |
200 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
55 |
24 |
| Weighted average interest rate reduction |
6.82% |
6.36% |
| Recorded investment related to interest rate reduction |
58 |
181 |
|
Trial modifications [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
0 |
0 |
| Interest rate reduction |
0 |
0 |
| Other interest rate concessions |
666 |
651 |
| Total |
666 |
651 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
0 |
0 |
| Weighted average interest rate reduction |
0.00% |
0.00% |
| Recorded investment related to interest rate reduction |
0 |
0 |
|
Total Consumer [Member]
|
|
|
| Primary Modification Type [Abstract] |
|
|
| Principal |
1,455 |
1,801 |
| Interest rate reduction |
1,842 |
2,922 |
| Other interest rate concessions |
7,531 |
1,789 |
| Total |
10,828 |
6,512 |
| Financial effects of modifications [Abstract] |
|
|
| Charge-offs, financial effects of modifications |
1,114 |
347 |
| Weighted average interest rate reduction |
3.78% |
4.00% |
| Recorded investment related to interest rate reduction |
$ 2,991 |
$ 4,417 |