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Commitments and Contingencies (Purchased Power) (Details) - Purchased Power Contracts $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($)
Duke Energy Progress |
Unconditional Purchase Obligations [Abstract] |
2020 | $ 46
2021 | 66
2022 | 63
2023 | 55
2024 | 56
Thereafter | 123
Total | $ 409
Duke Energy Progress | Maximum |
Unconditional Purchase Obligations [Abstract] |
Net plant output percent | 100.00%
Duke Energy Florida |
Unconditional Purchase Obligations [Abstract] |
2020 | $ 374
2021 | 356
2022 | 354
2023 | 374
2024 | 262
Thereafter | 91
Total | $ 1,811
Duke Energy Florida | Minimum |
Unconditional Purchase Obligations [Abstract] |
Net plant output percent | 81.00%
Duke Energy Florida | Maximum |
Unconditional Purchase Obligations [Abstract] |
Net plant output percent | 100.00%
Duke Energy Ohio |
Unconditional Purchase Obligations [Abstract] |
2020 | $ 132
2021 | 107
2022 | 32
Total | $ 271
Duke Energy Ohio | Minimum |
Unconditional Purchase Obligations [Abstract] |
Net plant output percent | 1.00%
Duke Energy Ohio | Maximum |
Unconditional Purchase Obligations [Abstract] |
Net plant output percent | 9.00%

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- Definition Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308 + Details
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