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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified |  |  | 9 Months Ended | 1 Months Ended | 20 Months Ended | 2 Months Ended | 17 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2014 Minimum | Feb. 28, 2013 Bay Springs Pipeline Release bbl | Sep. 30, 2014 Bay Springs Pipeline Release | Jun. 30, 2013 Kemp River Pipeline Release event bbl | Sep. 30, 2014 Kemp River Pipeline Release
Environmental |  |  |  |  |  |  |
Estimated undiscounted reserve for environmental liabilities | $ 87 | $ 93 |  |  |  |  |
Estimated undiscounted reserve for environmental liabilities, short-term | 13 | 11 |  |  |  |  |
Estimated undiscounted reserve for environmental liabilities, long-term | 74 | 82 |  |  |  |  |
Probable recoveries from insurers and from third parties under indemnification agreements | 9 | 10 |  |  |  |  |
Actual cash expenditures for environmental liabilities, period paid |  |  | 3 years |  |  |  |
Number of events occurred |  |  |  |  |  | 2 |
Estimated size of release (in barrels) |  |  |  | 120 |  | 700 |
Total estimated cost to clean up and remediate the site, before insurance recoveries |  |  |  |  |  |  | 15
Total cost to clean up and remediate the site, before insurance recoveries |  |  |  |  | 6 |  |
Cost incurred, to date, to clean up and remediate the site, before insurance recoveries |  |  |  |  |  |  | 8
Charges, fines or penalties assessed |  |  |  |  |  |  | $ 0

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