|
Inventories (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
|---|---|---|
| Inventory Net [Abstract] | ||
| Natural gas liquids, olefins, and natural gas in underground storage | $ 122 | $ 150 |
| Materials, supplies, and other | 78 | 81 |
| Total Inventories | $ 200 | $ 231 |