|
Loans and Allowance for Credit Losses, Loans by Credit Quality Indicator, Commercial (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Purchased Credit Impaired Loans | $ 35,534 | $ 36,719 |
| Loans | 766,521 | 769,631 |
|
Commercial and Industrial Loans [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Purchased Credit Impaired Loans | 385 | 399 |
| Loans | 168,546 | 167,216 |
|
Commercial Real Estate Mortgage [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Purchased Credit Impaired Loans | 3,107 | 3,270 |
| Loans | 105,874 | 105,975 |
|
Commercial Real Estate Construction [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Purchased Credit Impaired Loans | 1,564 | 1,745 |
| Loans | 18,549 | 19,382 |
|
Lease Financing [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Purchased Credit Impaired Loans | 0 | 0 |
| Loans | 13,143 | 13,117 |
|
Foreign Loans [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Purchased Credit Impaired Loans | 1,198 | 1,353 |
| Loans | 39,637 | 39,760 |
|
Total Commercial [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Purchased Credit Impaired Loans | 6,254 | 6,767 |
| Loans | 345,749 | 345,450 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 168,161 | 166,817 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member] | Pass [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 147,651 | 144,980 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial and Industrial Loans [Member] | Criticized [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 20,510 | 21,837 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Mortgage [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 102,767 | 102,705 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Mortgage [Member] | Pass [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 80,762 | 80,215 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Mortgage [Member] | Criticized [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 22,005 | 22,490 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 16,985 | 17,637 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member] | Pass [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 11,017 | 10,865 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Commercial Real Estate Construction [Member] | Criticized [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 5,968 | 6,772 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Lease Financing [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 13,143 | 13,117 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Lease Financing [Member] | Pass [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 12,449 | 12,455 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Lease Financing [Member] | Criticized [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 694 | 662 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Foreign Loans [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 38,439 | 38,407 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Foreign Loans [Member] | Pass [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 35,530 | 36,567 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Foreign Loans [Member] | Criticized [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 2,909 | 1,840 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 339,495 | 338,683 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member] | Pass [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | 287,409 | 285,082 |
|
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Commercial [Member] | Criticized [Member]
|
||
| Loans and Leases Receivable Disclosure [Abstract] | ||
| Loans, excluding Purchased Credit Impaired Loans | $ 52,086 | $ 53,601 |