|
Fair Value, Measurements From Brokers or Third Party Pricing Services (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Financial assets: | ||
| Loans held for sale | $ 0 | $ 6 |
|
Brokers [Member] | Level 1 [Member]
|
||
| Financial assets: | ||
| Trading assets (excluding derivatives) | 0 | 0 |
| Total Securities Available for Sale | 0 | 0 |
| Derivatives (trading and other assets) | 0 | 0 |
| Financial liabilities: | ||
| Fair Value Liability derivatives | 0 | 0 |
| Other liabilities | 6 | 0 |
|
Brokers [Member] | Level 1 [Member] | Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Brokers [Member] | Level 1 [Member] | US Treasury and Government [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Brokers [Member] | Level 1 [Member] | US States and Political Subdivisions [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Brokers [Member] | Level 1 [Member] | Mortgage Backed Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Brokers [Member] | Level 1 [Member] | Other Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Brokers [Member] | Level 1 [Member] | Equity Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Brokers [Member] | Level 2 [Member]
|
||
| Financial assets: | ||
| Trading assets (excluding derivatives) | 664 | 406 |
| Total Securities Available for Sale | 15,368 | 1,657 |
| Derivatives (trading and other assets) | 8 | 8 |
| Financial liabilities: | ||
| Fair Value Liability derivatives | 71 | 26 |
| Other liabilities | 218 | 121 |
|
Brokers [Member] | Level 2 [Member] | Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 15,365 | 1,654 |
|
Brokers [Member] | Level 2 [Member] | US Treasury and Government [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Brokers [Member] | Level 2 [Member] | US States and Political Subdivisions [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 161 | 0 |
|
Brokers [Member] | Level 2 [Member] | Mortgage Backed Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 365 | 138 |
|
Brokers [Member] | Level 2 [Member] | Other Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 14,839 | 1,516 |
|
Brokers [Member] | Level 2 [Member] | Equity Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 3 | 3 |
|
Brokers [Member] | Level 3 [Member]
|
||
| Financial assets: | ||
| Trading assets (excluding derivatives) | 7 | 8 |
| Total Securities Available for Sale | 2,592 | 12,469 |
| Derivatives (trading and other assets) | 0 | 0 |
| Financial liabilities: | ||
| Fair Value Liability derivatives | 0 | 0 |
| Other liabilities | 0 | 0 |
|
Brokers [Member] | Level 3 [Member] | Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 2,592 | 12,469 |
|
Brokers [Member] | Level 3 [Member] | US Treasury and Government [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Brokers [Member] | Level 3 [Member] | US States and Political Subdivisions [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Brokers [Member] | Level 3 [Member] | Mortgage Backed Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 4 | 4 |
|
Brokers [Member] | Level 3 [Member] | Other Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 2,588 | 12,465 |
|
Brokers [Member] | Level 3 [Member] | Equity Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Third party pricing services [Member] | Level 1 [Member]
|
||
| Financial assets: | ||
| Trading assets (excluding derivatives) | 1,335 | 1,314 |
| Total Securities Available for Sale | 716 | 944 |
| Derivatives (trading and other assets) | 0 | 0 |
| Financial liabilities: | ||
| Fair Value Liability derivatives | 0 | 0 |
| Other liabilities | 0 | 0 |
|
Third party pricing services [Member] | Level 1 [Member] | Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 716 | 915 |
|
Third party pricing services [Member] | Level 1 [Member] | US Treasury and Government [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 716 | 915 |
|
Third party pricing services [Member] | Level 1 [Member] | US States and Political Subdivisions [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Third party pricing services [Member] | Level 1 [Member] | Mortgage Backed Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Third party pricing services [Member] | Level 1 [Member] | Other Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Third party pricing services [Member] | Level 1 [Member] | Equity Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 29 |
|
Third party pricing services [Member] | Level 2 [Member]
|
||
| Financial assets: | ||
| Trading assets (excluding derivatives) | 813 | 1,016 |
| Total Securities Available for Sale | 213,111 | 192,058 |
| Derivatives (trading and other assets) | 591 | 602 |
| Financial liabilities: | ||
| Fair Value Liability derivatives | 593 | 634 |
| Other liabilities | 41 | 104 |
|
Third party pricing services [Member] | Level 2 [Member] | Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 212,301 | 191,284 |
|
Third party pricing services [Member] | Level 2 [Member] | US Treasury and Government [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 6,168 | 6,231 |
|
Third party pricing services [Member] | Level 2 [Member] | US States and Political Subdivisions [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 36,630 | 35,036 |
|
Third party pricing services [Member] | Level 2 [Member] | Mortgage Backed Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 139,882 | 121,703 |
|
Third party pricing services [Member] | Level 2 [Member] | Other Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 29,621 | 28,314 |
|
Third party pricing services [Member] | Level 2 [Member] | Equity Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 810 | 774 |
|
Third party pricing services [Member] | Level 3 [Member]
|
||
| Financial assets: | ||
| Trading assets (excluding derivatives) | 0 | 0 |
| Total Securities Available for Sale | 356 | 441 |
| Derivatives (trading and other assets) | 2 | 0 |
| Financial liabilities: | ||
| Fair Value Liability derivatives | 0 | 0 |
| Other liabilities | 0 | 0 |
|
Third party pricing services [Member] | Level 3 [Member] | Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 356 | 441 |
|
Third party pricing services [Member] | Level 3 [Member] | US Treasury and Government [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Third party pricing services [Member] | Level 3 [Member] | US States and Political Subdivisions [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 0 | 0 |
|
Third party pricing services [Member] | Level 3 [Member] | Mortgage Backed Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 283 | 292 |
|
Third party pricing services [Member] | Level 3 [Member] | Other Debt Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | 73 | 149 |
|
Third party pricing services [Member] | Level 3 [Member] | Equity Securities [Member]
|
||
| Financial assets: | ||
| Total Securities Available for Sale | $ 0 | $ 0 |