CONTINGENCIES - General Litigation Matters (Details) - Pending Litigation $ in Millions |
1 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|
|
Sep. 30, 2019
USD ($)
|
Mar. 31, 2019
plaintiff
|
Nov. 30, 2018
USD ($)
defendant
plaintiff
|
May 31, 2018
USD ($)
agreement
|
Dec. 31, 2018 |
Dec. 31, 2017
claim
|
|
| Putative Securities Class Action | ||||||
| Loss Contingencies [Line Items] | ||||||
| Increase in the purported class period | 1 day | |||||
| Shareholder Derivative Lawsuits | ||||||
| Loss Contingencies [Line Items] | ||||||
| Pending number of claims | claim | 2 | |||||
| Stay period | 30 days | |||||
| MISSISSIPPI POWER CO | Martin Product Sales, LLC Litigation | ||||||
| Loss Contingencies [Line Items] | ||||||
| Number of agreements | agreement | 2 | |||||
| Damages sought by litigation | $ 143.0 | |||||
| Compensatory damages sought by litigation | $ 5.0 | |||||
| Punitive damages sought by litigation | $ 50.0 | |||||
| MISSISSIPPI POWER CO | Purported Violations Of Mississippi Consumer Protection Act | ||||||
| Loss Contingencies [Line Items] | ||||||
| Number of plaintiffs | plaintiff | 4 | 10 | ||||
| Number of defendants | defendant | 3 | |||||
| Underpayment of refunds | $ 23.5 | |||||