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Severance (Tables) | 12 Months Ended
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Dec. 31, 2018
Restructuring Cost and Reserve [Line Items] |
Schedule of Severance Expense | The following table presents the direct and allocated severance and related charges recorded by the Duke Energy Registrants. Amounts are included within Operation, maintenance and other on the Consolidated Statements of Operations.
|  | Duke |  |  | Duke |  | Duke |  | Duke |  | Duke |  |
| Duke |  | Energy |  | Progress |  | Energy |  | Energy |  | Energy |  | Energy |  |
(in millions) | Energy |  | Carolinas |  | Energy |  | Progress |  | Florida |  | Ohio |  | Indiana |  | Piedmont(a) |
Year Ended December 31, 2018 | $ | 187 |  | $ | 102 |  | $ | 69 |  | $ | 52 |  | $ | 17 |  | $ | 6 |  | $ | 7 |  | $ | 2 |
Year Ended December 31, 2017 | 15 |  | 2 |  | 2 |  | 1 |  | 1 |  | — |  | 1 |  | 9 |
Year Ended December 31, 2016 | 118 |  | 39 |  | 40 |  | 23 |  | 17 |  | 3 |  | 7 |  |
(a) | Piedmont severance benefit charges were $3 million for the two months ended December 31, 2016, and $19 million for the year ended October 31, 2016.
Schedule of Severance Liability | The table below presents the severance liability for past and ongoing severance plans including the plans described above.
|  | Duke |  |  | Duke |  | Duke |  | Duke |  | Duke |  |
| Duke |  | Energy |  | Progress |  | Energy |  | Energy |  | Energy |  | Energy |  |
(in millions) | Energy |  | Carolinas |  | Energy |  | Progress |  | Florida |  | Ohio |  | Indiana |  | Piedmont |
Balance at December 31, 2017 | $ | 19 |  | $ | 5 |  | $ | 2 |  | $ | 1 |  | $ | — |  | $ | — |  | $ | — |  | $ | 5 |
Provision/Adjustments | 200 |  | 98 |  | 50 |  | 40 |  | 10 |  | 2 |  | 2 |  | — |
Cash Reductions | (14 | ) | (3 | ) | (1 | ) | — |  | (1 | ) | — |  | — |  | (5 | )
Balance at December 31, 2018 | $ | 205 |  | $ | 100 |  | $ | 51 |  | $ | 41 |  | $ | 9 |  | $ | 2 |  | $ | 2 |  | $ | — |

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