|
Investments (Fair Value Method Investments) (Details) (USD $)
|
9 Months Ended | |
|---|---|---|
|
Sep. 30, 2014
|
Dec. 31, 2013
|
|
| Fair value equity securities held as collateral | $ 444,000,000 | $ 3,959,000,000 |
| Obligations under prepaid forward sale agreements | 117,000,000 | 811,000,000 |
| Derivative component of prepaid forward sale agreements | 277,000,000 | 2,800,000,000 |
| Total liabilities associated with prepaid forward sale agreements | 394,000,000 | 3,611,000,000 |
| Fair Value Equity Securities Settlement | $ 3,200,000,000 |