|
Commitments and Contingencies Level 4 (Details) - Non-Environmental Liabilities (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Loss Contingencies [Line Items] | ||
| Estimated Litigation Liability | $ 12 | $ 16 |
| Estimated Litigation Liability, Current | $ 9 | $ 7 |