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Litigation and Environmental - Environmental Matters (Details) |  |  |  |  | 240 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 16, 2019 | Mar. 29, 2019 Parties | May 04, 2018 USD ($) a | Nov. 08, 2013 Parties | Dec. 31, 1969 | Jun. 30, 2020 USD ($) | Dec. 31, 2019 USD ($) | Jan. 31, 2015 cases
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Recorded Third-Party Environmental Recoveries Receivable | $ |  |  |  |  |  | $ 12,000,000 | $ 15,000,000 |
Percentage of Response Costs | 35.00% |  |  |  |  |  |  |
Accrual for Environmental Loss Contingencies | $ |  |  |  |  |  | $ 259,000,000 | $ 259,000,000 |
Rare Metals Inc. |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Number of Uranium Mines |  |  |  |  | 20 |  |  |
Parish of Plaquemines, Louisiana | Coastal Zone | TGP |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Number of Defendants | Parties |  |  |  | 17 |  |  |  |
Parish Orleans, Louisiana | Coastal Zone | SNG |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Number of Defendants | Parties |  | 10 |  |  |  |  |  |
Judicial District of Louisiana | Coastal Zone |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  |  |  |  |  |  |  | 40
Judicial District of Louisiana | Coastal Zone | TGP |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  |  |  |  |  |  |  | 1
Judicial District of Louisiana | Coastal Zone | SNG |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  |  |  |  |  |  |  | 1
Vintage Assets Inc. | Parish of Plaquemines, Louisiana | TGP and SNG |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Restore acreage | a |  |  | 9.6 |  |  |  |  |
Loss Contingency, Damages Awarded, Value | $ |  |  | $ 1,104 |  |  |  |  |
Louisiana Landowner Coastal Erosion Litigation | Judicial District of Louisiana | TGP and SNG |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  |  |  |  |  |  |  | 2
Louisiana Landowner Coastal Erosion Litigation | Judicial District of Louisiana | TGP |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  |  |  |  |  |  |  | 2
Louisiana Landowner Coastal Erosion Litigation | Judicial District of Louisiana | SNG |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Loss Contingency, Pending Claims, Number |  |  |  |  |  |  |  | 2

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