|
Investment Income and Gains and Losses - Net Investment Income (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Schedule Of Investment Income Reported Amounts By Category [Line Items] | ||
| Net investment income | $ 276 | $ 277 |