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Leases (Operating Lease Maturities) (Details) - USD ($) $ in Millions | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Operating Lease Liabilities, Payments Due (Topic 842) |  |
2020 | $ 271 |
2021 | 238 |
2022 | 192 |
2023 | 180 |
2024 | 169 |
Thereafter | 1,057 |
Total operating lease payments | 2,107 |
Less: present value discount | (436) |
Total operating lease liabilities | 1,671 |
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity (Topic 840) |  |
2019 |  | $ 239
2020 |  | 219
2021 |  | 186
2022 |  | 170
2023 |  | 160
Thereafter |  | 1,017
Total |  | 1,991
Duke Energy Carolinas [Member] |  |
Operating Lease Liabilities, Payments Due (Topic 842) |  |
2020 | 32 |
2021 | 29 |
2022 | 19 |
2023 | 19 |
2024 | 16 |
Thereafter | 66 |
Total operating lease payments | 181 |
Less: present value discount | (32) |
Total operating lease liabilities | 149 |
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity (Topic 840) |  |
2019 |  | 33
2020 |  | 29
2021 |  | 19
2022 |  | 19
2023 |  | 17
Thereafter |  | 68
Total |  | 185
Progress Energy [Member] |  |
Operating Lease Liabilities, Payments Due (Topic 842) |  |
2020 | 125 |
2021 | 112 |
2022 | 90 |
2023 | 89 |
2024 | 89 |
Thereafter | 530 |
Total operating lease payments | 1,035 |
Less: present value discount | (198) |
Total operating lease liabilities | 837 |
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity (Topic 840) |  |
2019 |  | 97
2020 |  | 90
2021 |  | 79
2022 |  | 76
2023 |  | 77
Thereafter |  | 455
Total |  | 874
Duke Energy Progress [Member] |  |
Operating Lease Liabilities, Payments Due (Topic 842) |  |
2020 | 47 |
2021 | 46 |
2022 | 35 |
2023 | 34 |
2024 | 35 |
Thereafter | 309 |
Total operating lease payments | 506 |
Less: present value discount | (118) |
Total operating lease liabilities | 388 |
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity (Topic 840) |  |
2019 |  | 49
2020 |  | 46
2021 |  | 37
2022 |  | 34
2023 |  | 35
Thereafter |  | 314
Total |  | 515
Duke Energy Florida [Member] |  |
Operating Lease Liabilities, Payments Due (Topic 842) |  |
2020 | 78 |
2021 | 66 |
2022 | 55 |
2023 | 55 |
2024 | 54 |
Thereafter | 221 |
Total operating lease payments | 529 |
Less: present value discount | (80) |
Total operating lease liabilities | 449 |
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity (Topic 840) |  |
2019 |  | 48
2020 |  | 44
2021 |  | 42
2022 |  | 42
2023 |  | 42
Thereafter |  | 141
Total |  | 359
Duke Energy Ohio [Member] |  |
Operating Lease Liabilities, Payments Due (Topic 842) |  |
2020 | 2 |
2021 | 2 |
2022 | 2 |
2023 | 2 |
2024 | 2 |
Thereafter | 22 |
Total operating lease payments | 32 |
Less: present value discount | (10) |
Total operating lease liabilities | 22 |
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity (Topic 840) |  |
2019 |  | 2
2020 |  | 2
2021 |  | 2
2022 |  | 2
2023 |  | 2
Thereafter |  | 23
Total |  | 33
Duke Energy Indiana [Member] |  |
Operating Lease Liabilities, Payments Due (Topic 842) |  |
2020 | 6 |
2021 | 5 |
2022 | 4 |
2023 | 4 |
2024 | 4 |
Thereafter | 67 |
Total operating lease payments | 90 |
Less: present value discount | (29) |
Total operating lease liabilities | 61 |
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity (Topic 840) |  |
2019 |  | 6
2020 |  | 5
2021 |  | 4
2022 |  | 4
2023 |  | 5
Thereafter |  | 66
Total |  | 90
Piedmont Natural Gas [Member] |  |
Operating Lease Liabilities, Payments Due (Topic 842) |  |
2020 | 5 |
2021 | 5 |
2022 | 5 |
2023 | 5 |
2024 | 5 |
Thereafter | 9 |
Total operating lease payments | 34 |
Less: present value discount | (4) |
Total operating lease liabilities | $ 30 |
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity (Topic 840) |  |
2019 |  | 5
2020 |  | 5
2021 |  | 5
2022 |  | 5
2023 |  | 6
Thereafter |  | 11
Total |  | $ 37

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