|
Investments (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Dec. 31, 2014
|
|
| Investment Holdings [Line Items] | |||
| Other than temporary impairment loss on investments | $ 0 | $ 0 | |
| Affordable housing project equity method investments | 197 | 201 | |
| Contingent liabilities related to affordable housing project equity method investments | 32 | 38 | |
| Community Reinvestment Act [Member] | Other Assets [Member] | |||
| Investment Holdings [Line Items] | |||
| Equity method investments | 312 | 325 | |
| Community Reinvestment Act [Member] | Other Liabilities [Member] | |||
| Investment Holdings [Line Items] | |||
| Contingent liabilities related to equity method investments | $ 46 | $ 51 | |