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v3.19.2

Income Taxes (Effective Tax Rates) (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |  |
Effective tax rate | 15.90% | 16.50% | 12.60% | 19.90%
Duke Energy Carolinas [Member] |  |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |  |
Effective tax rate | 19.70% | 21.50% | 18.70% | 21.80%
Progress Energy [Member] |  |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |  |
Effective tax rate | 16.70% | 17.30% | 17.00% | 15.40%
Duke Energy Progress [Member] |  |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |  |
Effective tax rate | 16.30% | 20.10% | 17.10% | 16.80%
Duke Energy Florida [Member] |  |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |  |
Effective tax rate | 19.60% | 18.00% | 19.50% | 17.40%
Duke Energy Ohio [Member] |  |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |  |
Effective tax rate | 16.10% | 25.80% | 16.50% | 16.00%
Duke Energy Indiana [Member] |  |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |  |
Effective tax rate | 24.20% | 25.80% | 24.20% | 25.80%
Piedmont Natural Gas [Member] |  |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |  |
Effective tax rate | 22.20% | 27.30% | 21.80% | 23.90%

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