XML 206 R99.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Debt and Credit Facilities (Annual Maturities) (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Current Maturities Of Long Term Debt [Abstract] |  |
Current maturities of long-term debt | $ 3,141 | $ 3,406
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2020 | 3,141 |
2021 | 5,053 |
2022 | 4,334 |
2023 | 3,112 |
2024 | 1,965 |
Thereafter | 39,542 |
Total long-term debt, including current maturities | 57,147 |
Purchase accounting adjustments | (1,500) | (1,600)
Other |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Current maturities of long-term debt | 361 |
Purchase Accounting Adjustments |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
Purchase accounting adjustments | $ 1,448 |
Parent Company | Debt Maturing June 2020, 2.100% Coupon | Unsecured Debt |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Interest rate | 2.10% |
Current maturities of long-term debt | $ 330 |
Duke Energy Carolinas |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Current maturities of long-term debt | 458 | 6
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2020 | 458 |
2021 | 504 |
2022 | 830 |
2023 | 1,006 |
2024 | 306 |
Thereafter | 8,875 |
Total long-term debt, including current maturities | $ 11,979 |
Duke Energy Carolinas | Bonds Maturing June 2020, 4.300% Coupon | First Mortgage |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Interest rate | 4.30% |
Current maturities of long-term debt | $ 450 |
Progress Energy |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Current maturities of long-term debt | 1,577 | 1,672
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2020 | 1,578 |
2021 | 2,257 |
2022 | 1,048 |
2023 | 398 |
2024 | 227 |
Thereafter | 14,267 |
Total long-term debt, including current maturities | 19,775 |
Duke Energy Progress |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Current maturities of long-term debt | 1,006 | 603
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2020 | 1,006 |
2021 | 932 |
2022 | 508 |
2023 | 319 |
2024 | 160 |
Thereafter | 6,190 |
Total long-term debt, including current maturities | $ 9,115 |
Duke Energy Progress | Bonds Maturing September 2020, 2.282% Coupon | First Mortgage |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Interest rate | 2.065% |
Current maturities of long-term debt | $ 300 |
Duke Energy Progress | Parent Company | Debt Maturing December 2020, 2.510% Coupon | Unsecured Debt |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Interest rate | 2.51% |
Current maturities of long-term debt | $ 700 |
Duke Energy Florida |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Current maturities of long-term debt | 571 | 270
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2020 | 572 |
2021 | 825 |
2022 | 90 |
2023 | 79 |
2024 | 67 |
Thereafter | 6,427 |
Total long-term debt, including current maturities | $ 8,060 |
Duke Energy Florida | Bonds Maturing January 2019, 5.300% Coupon | First Mortgage |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Interest rate | 1.85% |
Current maturities of long-term debt | $ 250 |
Duke Energy Florida | Bonds Maturing April 2019, 5.450% Coupon | First Mortgage |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Interest rate | 4.55% |
Current maturities of long-term debt | $ 250 |
Duke Energy Ohio |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Current maturities of long-term debt |  | 551
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2020 | 0 |
2021 | 50 |
2022 | 0 |
2023 | 325 |
2024 | 25 |
Thereafter | 2,261 |
Total long-term debt, including current maturities | 2,661 |
Duke Energy Indiana |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Current maturities of long-term debt | 503 | 63
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2020 | 503 |
2021 | 70 |
2022 | 94 |
2023 | 3 |
2024 | 154 |
Thereafter | 3,272 |
Total long-term debt, including current maturities | $ 4,096 |
Duke Energy Indiana | Bonds Maturing July 2020, 3.750% Coupon | First Mortgage |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Interest rate | 3.75% |
Current maturities of long-term debt | $ 500 |
Piedmont |  |
Current Maturities Of Long Term Debt [Abstract] |  |
Current maturities of long-term debt |  | $ 350
Long-term Debt, Fiscal Year Maturity [Abstract] |  |
2020 | 0 |
2021 | 160 |
2022 | 0 |
2023 | 45 |
2024 | 40 |
Thereafter | 2,155 |
Total long-term debt, including current maturities | $ 2,400 |

X
- Definition Current Maturities of Long Term Debt + References No definition available. + Details
Name: | duk_CurrentMaturitiesOfLongTermDebtAbstract
Namespace Prefix: | duk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date, excluding purchase accounting adjustments. + References No definition available. + Details
Name: | duk_LongTermDebtExcludingPurchaseAccountingAdjustments
Namespace Prefix: | duk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of unamortized debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LongTermDebtByMaturityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after 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 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next 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 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates 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 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth 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 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third 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 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second 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 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_OtherDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_PurchaseAccountingAdjustmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_DebtMaturingJune20202.100CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyCarolinasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_BondsMaturingJune20204.300CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_FirstMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_ProgressEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_BondsMaturingSeptember20202.282CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_DebtMaturingDecember20202.510CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyFloridaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_BondsMaturingJanuary20201.850CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_BondsMaturingApril20204.550CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyOhioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyIndianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_BondsMaturingJuly20203.750CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_PiedmontNaturalGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |