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Employee Benefit Plans (Narrative) (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2019 USD ($)
Defined Benefit Plan Disclosure [Line Items] |
Remeasurement gain recognized | $ 18
Duke Energy RCBP [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Discount rate | 3.50%
Cash balance interest crediting rate | 4.00%
Increase in plan assets | $ 275
Increase in projected benefit obligation | 257
Settlement charge | 69
Duke Energy Carolinas [Member] | Duke Energy RCBP [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Settlement charge | 43
Duke Energy Progress [Member] | Duke Energy RCBP [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Settlement charge | 16
Duke Energy Florida [Member] | Duke Energy RCBP [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Settlement charge | 3
Duke Energy Indiana [Member] | Duke Energy RCBP [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Settlement charge | 3
Duke Energy Ohio [Member] | Duke Energy RCBP [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Settlement charge | 1
Piedmont Natural Gas [Member] | Duke Energy RCBP [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Settlement charge | $ 3

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- Definition Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Cash Balance Interest Credit Rate + References No definition available. + Details
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- Definition Defined Benefit Plan, Plan Assets, Increase (Decrease) For Remeasurement Due To Settlement + References No definition available. + Details
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- Definition Defined Benefit Plan, Settlement Charge + References No definition available. + Details
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Amount of (increase) decrease to benefit obligation of defined benefit plan from remeasurement due to settlement. Excludes decrease to benefit obligation for settlement payment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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