XML 98 R57.htm IDEA: XBRL DOCUMENT
v3.22.1

Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 3,884 | $ 3,387
Other debt securities |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | 584 |
Progress Energy |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 1,095 | 1,082
Progress Energy | Debt Maturing April 2022, 3.150% interest rate | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest Rate | 3.15% |
Current maturities of long-term debt | $ 450 |
Duke Energy (Parent) | Debt Maturing August 2022, 3.050% interest rate | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest Rate | 3.05% |
Current maturities of long-term debt | $ 500 |
Duke Energy (Parent) | Debt Maturing August 2022, 2.400% interest rate | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest Rate | 2.40% |
Current maturities of long-term debt | $ 500 |
Duke Energy Carolinas |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 1,367 | 362
Duke Energy Carolinas | Debt Maturing May 2022, 3.350% interest rate | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest Rate | 3.35% |
Current maturities of long-term debt | $ 350 |
Duke Energy Carolinas | Debt Maturing March 2023, 2.500% Coupon | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest Rate | 2.50% |
Current maturities of long-term debt | $ 500 |
Duke Energy Carolinas | Debt Maturing March 2023, 3.050% Coupon | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest Rate | 3.05% |
Current maturities of long-term debt | $ 500 |
Duke Energy Progress |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 568 | $ 556
Duke Energy Progress | Debt Maturing May 2022, 2.800%, interest rate | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest Rate | 2.80% |
Current maturities of long-term debt | $ 500 |

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: 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=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | us-gaap_DebtInstrumentLineItems
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=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtCurrent
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: | dei_LegalEntityAxis=duk_ProgressEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_DebtMaturingApril20223150CouponMember
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_DukeEnergyParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_DebtMaturingAugust20223050CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_DebtMaturingAugust20222400CouponMember
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_DebtMaturingMay20223350CouponMember
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: | us-gaap_DebtInstrumentAxis=duk_DebtMaturingMarch20232500CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=duk_DebtMaturingMarch20233050CouponMember
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_DebtMaturingMay20222800CouponMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |