|
Fair Value Measurements (Details 1) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Reconciliation of items measured at fair value on a recurring basis that used significant unobservable inputs (Level 3) | ||
| Balance at the beginning of the period | $ 15 | $ 11 |
| Total gains or losses included in earnings | 0 | 0 |
| Total gains or losses included in other comprehensive income | 0 | 1 |
| Purchases and issuances | 0 | 0 |
| Sales and settlements | 0 | 0 |
| Transfers in and/or out of Level 3 | 0 | 0 |
| Balance at the end of the period | 15 | 12 |
| Change in unrealized gains or losses for the period included in earnings for securities held at the end of the reporting period | $ 0 | $ 0 |