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Employee Benefit Plans (Expected Benefit Payments) (Details) $ in Millions | Dec. 31, 2018 USD ($)
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Pension Plan [Member] | Qualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | $ 662
2020 | 651
2021 | 663
2022 | 662
2023 | 655
2024-2028 | 2,993
Pension Plan [Member] | Nonqualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 22
2020 | 21
2021 | 23
2022 | 25
2023 | 25
2024-2028 | 125
Pension Plan [Member] | Duke Energy Carolinas [Member] | Qualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 210
2020 | 177
2021 | 182
2022 | 189
2023 | 185
2024-2028 | 794
Pension Plan [Member] | Duke Energy Carolinas [Member] | Nonqualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 2
2020 | 1
2021 | 1
2022 | 1
2023 | 3
2024-2028 | 10
Pension Plan [Member] | Progress Energy [Member] | Qualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 179
2020 | 171
2021 | 177
2022 | 179
2023 | 181
2024-2028 | 902
Pension Plan [Member] | Progress Energy [Member] | Nonqualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 8
2020 | 8
2021 | 8
2022 | 8
2023 | 7
2024-2028 | 37
Pension Plan [Member] | Duke Energy Progress [Member] | Qualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 105
2020 | 90
2021 | 95
2022 | 94
2023 | 95
2024-2028 | 451
Pension Plan [Member] | Duke Energy Progress [Member] | Nonqualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 3
2020 | 2
2021 | 2
2022 | 2
2023 | 2
2024-2028 | 11
Pension Plan [Member] | Duke Energy Florida [Member] | Qualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 73
2020 | 80
2021 | 81
2022 | 84
2023 | 85
2024-2028 | 447
Pension Plan [Member] | Duke Energy Florida [Member] | Nonqualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 3
2020 | 3
2021 | 3
2022 | 3
2023 | 3
2024-2028 | 15
Pension Plan [Member] | Duke Energy Ohio [Member] | Qualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 33
2020 | 37
2021 | 37
2022 | 37
2023 | 35
2024-2028 | 158
Pension Plan [Member] | Duke Energy Ohio [Member] | Nonqualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2024-2028 | 1
Pension Plan [Member] | Duke Energy Indiana [Member] | Qualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 47
2020 | 51
2021 | 51
2022 | 49
2023 | 47
2024-2028 | 217
Pension Plan [Member] | Duke Energy Indiana [Member] | Nonqualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2024-2028 | 1
Pension Plan [Member] | Piedmont Natural Gas [Member] | Qualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 20
2020 | 24
2021 | 23
2022 | 22
2023 | 22
2024-2028 | 96
Pension Plan [Member] | Piedmont Natural Gas [Member] | Nonqualified Plan [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2024-2028 | 2
Other Post-Retirement Benefit Plans [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 81
2020 | 75
2021 | 71
2022 | 68
2023 | 64
2024-2028 | 266
Other Post-Retirement Benefit Plans [Member] | Duke Energy Carolinas [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 19
2020 | 18
2021 | 18
2022 | 17
2023 | 16
2024-2028 | 64
Other Post-Retirement Benefit Plans [Member] | Progress Energy [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 30
2020 | 29
2021 | 28
2022 | 27
2023 | 26
2024-2028 | 109
Other Post-Retirement Benefit Plans [Member] | Duke Energy Progress [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 16
2020 | 15
2021 | 15
2022 | 14
2023 | 14
2024-2028 | 59
Other Post-Retirement Benefit Plans [Member] | Duke Energy Florida [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 14
2020 | 13
2021 | 13
2022 | 12
2023 | 12
2024-2028 | 50
Other Post-Retirement Benefit Plans [Member] | Duke Energy Ohio [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 3
2020 | 3
2021 | 3
2022 | 3
2023 | 3
2024-2028 | 11
Other Post-Retirement Benefit Plans [Member] | Duke Energy Indiana [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 9
2020 | 8
2021 | 7
2022 | 7
2023 | 6
2024-2028 | 26
Other Post-Retirement Benefit Plans [Member] | Piedmont Natural Gas [Member] |
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |
2019 | 2
2020 | 2
2021 | 2
2022 | 3
2023 | 3
2024-2028 | $ 12

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