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Debt and Credit Facilities (Narrative) (Details) |  |  |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 07, 2024 USD ($) | Jun. 30, 2023 day | Apr. 03, 2023 | Jan. 31, 2025 USD ($) | Apr. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Jan. 31, 2024 USD ($) | Apr. 30, 2023 USD ($) $ / shares | Dec. 31, 2022 USD ($) | Sep. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) | Feb. 27, 2025 USD ($) | Dec. 31, 2024 USD ($) $ / shares | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) $ / shares | Mar. 31, 2023 USD ($) | Mar. 30, 2022 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,740,000,000 |  | $ 9,825,000,000 |  |
Common stock, par value (in usd per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.001 |  | $ 0.001 |  |
Demand notes, maximum amount available for sale |  |  |  |  |  |  |  |  |  | $ 4,000,000,000 |  |  |  |  |  |  |
Demand notes, maximum amount outstanding |  |  |  |  |  |  |  |  |  | $ 2,000,000,000 |  |  |  |  |  |  |
Principal amount of demand notes |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,070,000,000 |  | $ 985,000,000 |  |
Current maturities of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  | 4,349,000,000 |  | 2,800,000,000 |  |
Other loans outstanding against cash surrender value of life insurance policies |  |  |  |  |  |  |  |  |  |  |  |  | $ 903,000,000 |  | 873,000,000 |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt to total capitalization percentage, for each borrower |  |  |  |  |  |  |  |  |  |  |  |  | 0.65 |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,000,000,000 |  |  | $ 9,000,000,000 |
Letters of Credit Outstanding, Amount |  |  |  |  |  |  |  |  |  |  |  |  | 18,000,000 |  |  |  |
June 2017 Three Year Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term (in years) |  |  |  |  |  |  |  |  |  | 3 years | 3 years |  |  |  |  |  |
4.25% Convertible Senior notes Due April 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  | 4.125% |  |  |  |  |  |  |  |  |
4.25% Convertible Senior notes Due April 2026 | Convertible Debt | Debt Conversion Terms One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading days (in days) | day |  | 20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consecutive trading days (in days) | day |  | 30 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt conversion rate (as a percent) |  | 130.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
4.25% Convertible Senior notes Due April 2026 | Convertible Debt | Debt Conversion Terms Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading days (in days) | day |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consecutive trading days (in days) | day |  | 10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt conversion rate (as a percent) |  | 98.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan Due April 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 800,000,000 |  |
Duke Energy Term Loan Facility | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term (in years) | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Duke Energy Carolinas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  | 2,650,000,000 |  |
Current maturities of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 521,000,000 |  | 19,000,000 |  |
Duke Energy Carolinas | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt to total capitalization percentage, for each borrower |  |  |  |  |  |  |  |  |  |  |  |  | 0.65 |  |  |  |
Duke Energy Carolinas | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,400,000,000 |  |  |  |
Letters of Credit Outstanding, Amount |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000 |  |  |  |
Duke Energy Carolinas | First Mortgage Bonds | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  | $ 1,100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Duke Energy Carolinas | January 2025 First Mortgage Loans, Five Year Tranche | First Mortgage Bonds | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Term (in years) |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  | 4.85% |  |  |  |  |  |  |  |  |  |  |  |  |
Duke Energy Carolinas | January 2025 First Mortgage Loans, Ten Year Tranche | First Mortgage Bonds | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  | $ 700,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Term (in years) |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  | 5.25% |  |  |  |  |  |  |  |  |  |  |  |  |
Duke Energy Carolinas | Maturities Due January 2025 | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Duke Energy Carolinas | Duke Energy Term Loan Facility | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size | $ 700,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Drawings on credit facility |  |  |  |  |  |  |  |  |  |  |  |  | 455,000,000 |  |  |  |
Facility increase | $ 300,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Duke Energy Carolinas | Duke Energy Term Loan Facility | Line of Credit | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Drawings on credit facility |  |  |  |  |  |  |  |  |  |  |  | $ 145,000,000 |  |  |  |  |
Parent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  |  |  |  |  |  |  |  |  |  | 4,565,000,000 |  | 3,075,000,000 |  |
Parent | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  |  | $ 1,000,000,000 |  | $ 400,000,000 |  |  |  |  |  |  |  |
Facility size |  |  |  |  |  |  |  |  |  |  | $ 1,400,000,000 |  |  |  |  |  | $ 1,000,000,000
Parent | 4.25% Convertible Senior notes Due April 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  |  |  |  |  | $ 1,700,000,000 |  |  |  |  |  |  |  |  |
Debt conversion rate (as a percent) |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in usd per share) | $ / shares |  |  |  |  |  |  |  | $ 0.001 |  |  |  |  |  |  |  |  |
Conversion ratio |  |  |  |  |  |  |  | 0.0084131 |  |  |  |  |  |  |  |  |
Parent | Duke Energy Term Loan Facility | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term (in years) |  |  |  |  |  | 364 days |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |
Facility size |  |  |  |  |  | $ 700,000,000 |  |  |  |  |  |  |  |  |  |  |
Drawings on credit facility |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Duke Energy Florida |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  |  |  |  |  |  |  |  |  |  | 173,000,000 |  | 1,500,000,000 |  |
Current maturities of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 534,000,000 |  | $ 589,000,000 |  |
Duke Energy Florida | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt to total capitalization percentage, for each borrower |  |  |  |  |  |  |  |  |  |  |  |  | 0.65 |  |  |  |
Duke Energy Florida | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size |  |  |  |  |  |  |  |  |  |  |  |  | $ 875,000,000 |  |  |  |
Letters of Credit Outstanding, Amount |  |  |  |  |  |  |  |  |  |  |  |  | 7,000,000 |  |  |  |
Duke Energy Florida | Duke Energy Term Loan Facility | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term (in years) | 364 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size | $ 800,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Drawings on credit facility |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |  |  |
Facility increase | 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Duke Energy Florida | Duke Energy Term Loan Facility | Line of Credit | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Drawings on credit facility |  |  |  |  |  |  |  |  |  |  |  | 700,000,000 |  |  |  |  |
Progress Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in usd per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.01 |  | $ 0.01 |  |
Current maturities of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,517,000,000 |  | $ 661,000,000 |  |
Progress Energy | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt to total capitalization percentage, for each borrower |  |  |  |  |  |  |  |  |  |  |  |  | 0.65 |  |  |  |
Progress Energy | Line of Credit | Revolving Credit Facility | Progress Energy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size |  |  |  |  |  |  |  |  |  |  | $ 2,500,000,000 |  |  |  |  |  |
Duke Energy Ohio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  |  |  |  |  |  |  |  |  |  | $ 650,000,000 |  | $ 750,000,000 |  |
Common stock, par value (in usd per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 8.50 |  | $ 8.50 |  |
Current maturities of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 245,000,000 |  | $ 0 |  |
Duke Energy Ohio | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt to total capitalization percentage, for each borrower |  |  |  |  |  |  |  |  |  |  |  |  | 0.65 |  |  |  |
Duke Energy Ohio | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,050,000,000 |  |  |  |
Duke Energy Indiana |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  |  |  |  |  |  |  |  |  |  | 300,000,000 |  | 500,000,000 |  |
Current maturities of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000 |  | 4,000,000 |  |
Duke Energy Indiana | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt to total capitalization percentage, for each borrower |  |  |  |  |  |  |  |  |  |  |  |  | 0.65 |  |  |  |
Duke Energy Indiana | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size |  |  |  |  |  |  |  |  |  |  |  |  | $ 950,000,000 |  |  |  |
Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  |  |  |  |  |  |  |  |  |  | 677,000,000 |  | 1,000,000,000 |  |
Current maturities of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  | 983,000,000 |  | 72,000,000 |  |
Other loans outstanding against cash surrender value of life insurance policies |  |  |  |  |  |  |  |  |  |  |  |  | $ 32,000,000 |  | 32,000,000 |  |
Duke Energy Progress | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt to total capitalization percentage, for each borrower |  |  |  |  |  |  |  |  |  |  |  |  | 0.65 |  |  |  |
Duke Energy Progress | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |
Letters of Credit Outstanding, Amount |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |
Duke Energy Progress | Duke Energy Term Loan Facility | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Drawings on credit facility |  |  |  |  |  |  |  |  |  |  |  |  | 185,000,000 |  |  |  |
Facility increase | $ 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Duke Energy Progress | Duke Energy Term Loan Facility | Line of Credit | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Drawings on credit facility |  |  |  |  |  |  |  |  |  |  |  | $ 65,000,000 |  |  |  |  |
Piedmont |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuances |  |  |  |  |  |  |  |  |  |  |  |  | $ 375,000,000 |  | $ 350,000,000 |  |
Common stock, par value (in usd per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  | $ 0 |  |
Current maturities of long-term debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 205,000,000 |  | $ 40,000,000 |  |
Piedmont | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt to total capitalization percentage, for each borrower |  |  |  |  |  |  |  |  |  |  |  |  | 0.70 |  |  |  |
Piedmont | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Facility size |  |  |  |  |  |  |  |  |  |  |  |  | $ 950,000,000 |  |  |  |

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- Definition Line of Credit Facility, Accordion Feature, Increase Limit + References No definition available. + Details
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