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Debt and Credit Facilities (Summary of Debt and Related Terms) (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2025 | Oct. 31, 2025 | Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2024 | Dec. 31, 2025 | Dec. 31, 2024
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted Average Interest Rate (as a percent) | 4.41% |  |  |  |  | 4.41% | 4.37%
Unsecured Debt | $ 35,585,000,000 |  |  |  |  | $ 35,585,000,000 | $ 34,283,000,000
Secured Debt | 4,279,000,000 |  |  |  |  | 4,279,000,000 | 3,672,000,000
First mortgage bonds | 44,289,000,000 |  |  |  |  | 44,289,000,000 | 39,842,000,000
Finance leases | 576,000,000 |  |  |  |  | 576,000,000 | 570,000,000
Tax exempt bonds | 1,331,000,000 |  |  |  |  | 1,331,000,000 | 1,331,000,000
Notes payable and commercial paper | 3,254,000,000 |  |  |  |  | 3,254,000,000 | 4,213,000,000
Fair value hedge carrying value adjustment | 176,000,000 |  |  |  |  | 176,000,000 | (82,000,000)
Unamortized debt discount and premium, net | 762,000,000 |  |  |  |  | 762,000,000 | 845,000,000
Unamortized debt issuance costs | (416,000,000) |  |  |  |  | (416,000,000) | (401,000,000)
Total debt | 89,836,000,000 |  |  |  |  | 89,836,000,000 | 84,273,000,000
Short-term notes payable and commercial paper | (2,624,000,000) |  |  |  |  | (2,624,000,000) | (3,584,000,000)
Current maturities of long-term debt | (7,104,000,000) |  |  |  |  | (7,104,000,000) | (4,349,000,000)
Total long-term debt | 80,108,000,000 |  |  |  |  | 80,108,000,000 | 76,340,000,000
Short term obligations classified as long-term debt | 937,000,000 |  |  |  |  | 937,000,000 | 937,000,000
Repayments of debt | 500,000,000 | $ 95,000,000 | $ 650,000,000 | $ 150,000,000 |  |  |
Face amount of debt instrument issued | $ 7,005,000,000 |  |  |  |  | $ 7,005,000,000 | $ 7,740,000,000
Unsecured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted Average Interest Rate (as a percent) | 4.63% |  |  |  |  | 4.63% | 4.53%
Secured Debt |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted Average Interest Rate (as a percent) | 3.85% |  |  |  |  | 3.85% | 3.75%
First Mortgage Bonds |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted Average Interest Rate (as a percent) | 4.33% |  |  |  |  | 4.33% | 4.24%
Finance Leases |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted Average Interest Rate (as a percent) |  |  |  |  |  |  |
Tax-exempt bonds |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted Average Interest Rate (as a percent) | 3.54% |  |  |  |  | 3.54% | 3.85%
Short term obligations classified as long-term debt | $ 312,000,000 |  |  |  |  | $ 312,000,000 | $ 312,000,000
Notes Payable And Commercial Paper |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Weighted Average Interest Rate (as a percent) | 3.95% |  |  |  |  | 3.95% | 4.67%
Short term obligations classified as long-term debt | $ 625,000,000 |  |  |  |  | $ 625,000,000 | $ 625,000,000
Weighted average days to maturity (in days) |  |  |  |  |  | 21 days | 13 days
Purchase Accounting Adjustments | Parent Company |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unamortized debt issuance costs | 21,000,000 |  |  |  |  | $ 21,000,000 | $ 23,000,000
Purchase Accounting Adjustments | Progress Energy |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unamortized debt discount and premium, net | 855,000,000 |  |  |  |  | 855,000,000 | 925,000,000
Purchase Accounting Adjustments | Piedmont |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unamortized debt discount and premium, net | 45,000,000 |  |  |  |  | 45,000,000 | 56,000,000
Maturities Due March 2024 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Repayments of debt |  |  |  |  | $ 1,000,000,000 |  |
Duke Energy Carolinas |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unsecured Debt | 1,150,000,000 |  |  |  |  | 1,150,000,000 | 1,605,000,000
Secured Debt | 2,115,000,000 |  |  |  |  | 2,115,000,000 | 1,463,000,000
First mortgage bonds | 15,053,000,000 |  |  |  |  | 15,053,000,000 | 13,955,000,000
Finance leases | 272,000,000 |  |  |  |  | 272,000,000 | 270,000,000
Unamortized debt discount and premium, net | (20,000,000) |  |  |  |  | (20,000,000) | (20,000,000)
Unamortized debt issuance costs | (93,000,000) |  |  |  |  | (93,000,000) | (83,000,000)
Total debt | 18,777,000,000 |  |  |  |  | 18,777,000,000 | 17,490,000,000
Current maturities of long-term debt | (629,000,000) |  |  |  |  | (629,000,000) | (521,000,000)
Total long-term debt | 18,148,000,000 |  |  |  |  | 18,148,000,000 | 16,969,000,000
Short term obligations classified as long-term debt | 300,000,000 |  |  |  |  | 300,000,000 | 300,000,000
Face amount of debt instrument issued | 2,243,000,000 |  |  |  |  | 2,243,000,000 | 1,000,000,000
Duke Energy Carolinas | Related Party |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Money pool/intercompany borrowings | 300,000,000 |  |  |  |  | 300,000,000 | 300,000,000
Duke Energy Carolinas | Tax-exempt bonds |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Short term obligations classified as long-term debt |  |  |  |  |  |  | 0
Progress Energy |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unsecured Debt | 1,800,000,000 |  |  |  |  | 1,800,000,000 | 2,085,000,000
Secured Debt | 2,109,000,000 |  |  |  |  | 2,109,000,000 | 2,147,000,000
First mortgage bonds | 21,923,000,000 |  |  |  |  | 21,923,000,000 | 19,223,000,000
Finance leases | 569,000,000 |  |  |  |  | 569,000,000 | 581,000,000
Tax exempt bonds | 500,000,000 |  |  |  |  | 500,000,000 | 500,000,000
Unamortized debt discount and premium, net | (44,000,000) |  |  |  |  | (44,000,000) | (44,000,000)
Unamortized debt issuance costs | (159,000,000) |  |  |  |  | (159,000,000) | (146,000,000)
Total debt | 26,848,000,000 |  |  |  |  | 26,848,000,000 | 25,573,000,000
Current maturities of long-term debt | (722,000,000) |  |  |  |  | (722,000,000) | (1,517,000,000)
Total long-term debt | 26,126,000,000 |  |  |  |  | 26,126,000,000 | 22,979,000,000
Progress Energy | Related Party |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Money pool/intercompany borrowings | 150,000,000 |  |  |  |  | 150,000,000 | 1,227,000,000
Short-term money pool/intercompany borrowings |  |  |  |  |  |  | 1,077,000,000
Duke Energy Progress |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unsecured Debt |  |  |  |  |  |  | 185,000,000
Secured Debt | 1,290,000,000 |  |  |  |  | 1,290,000,000 | 1,269,000,000
First mortgage bonds | 11,576,000,000 |  |  |  |  | 11,576,000,000 | 9,974,000,000
Finance leases | 481,000,000 |  |  |  |  | 481,000,000 | 515,000,000
Tax exempt bonds | 500,000,000 |  |  |  |  | 500,000,000 | 500,000,000
Unamortized debt discount and premium, net | (25,000,000) |  |  |  |  | (25,000,000) | (24,000,000)
Unamortized debt issuance costs | (76,000,000) |  |  |  |  | (76,000,000) | (65,000,000)
Total debt | 13,896,000,000 |  |  |  |  | 13,896,000,000 | 13,115,000,000
Current maturities of long-term debt | (285,000,000) |  |  |  |  | (285,000,000) | (983,000,000)
Total long-term debt | 13,611,000,000 |  |  |  |  | 13,611,000,000 | 11,521,000,000
Short term obligations classified as long-term debt | 150,000,000 |  |  |  |  | 150,000,000 | 150,000,000
Face amount of debt instrument issued | 2,561,000,000 |  |  |  |  | 2,561,000,000 | 677,000,000
Duke Energy Progress | Related Party |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Money pool/intercompany borrowings | 150,000,000 |  |  |  |  | 150,000,000 | 761,000,000
Short-term money pool/intercompany borrowings |  |  |  |  |  |  | 611,000,000
Duke Energy Progress | Tax-exempt bonds |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Short term obligations classified as long-term debt |  |  |  |  |  |  | 0
Duke Energy Florida |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unsecured Debt | 150,000,000 |  |  |  |  | 150,000,000 | 250,000,000
Secured Debt | 818,000,000 |  |  |  |  | 818,000,000 | 879,000,000
First mortgage bonds | 10,349,000,000 |  |  |  |  | 10,349,000,000 | 9,247,000,000
Finance leases | 88,000,000 |  |  |  |  | 88,000,000 | 66,000,000
Unamortized debt discount and premium, net | (19,000,000) |  |  |  |  | (19,000,000) | (19,000,000)
Unamortized debt issuance costs | (79,000,000) |  |  |  |  | (79,000,000) | (76,000,000)
Total debt | 11,307,000,000 |  |  |  |  | 11,307,000,000 | 10,814,000,000
Current maturities of long-term debt | (437,000,000) |  |  |  |  | (437,000,000) | (534,000,000)
Total long-term debt | 10,870,000,000 |  |  |  |  | 10,870,000,000 | 9,814,000,000
Face amount of debt instrument issued | 1,100,000,000 |  |  |  |  | 1,100,000,000 | 173,000,000
Duke Energy Florida | Related Party |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Money pool/intercompany borrowings |  |  |  |  |  |  | 467,000,000
Short-term money pool/intercompany borrowings |  |  |  |  |  |  | 466,000,000
Duke Energy Ohio |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unsecured Debt | 1,285,000,000 |  |  |  |  | 1,285,000,000 | 1,380,000,000
First mortgage bonds | 3,075,000,000 |  |  |  |  | 3,075,000,000 | 2,722,000,000
Tax exempt bonds | 77,000,000 |  |  |  |  | 77,000,000 | 77,000,000
Unamortized debt discount and premium, net | (22,000,000) |  |  |  |  | (22,000,000) | (23,000,000)
Unamortized debt issuance costs | (20,000,000) |  |  |  |  | (20,000,000) | (18,000,000)
Total debt | 4,433,000,000 |  |  |  |  | 4,433,000,000 | 4,327,000,000
Current maturities of long-term debt | (45,000,000) |  |  |  |  | (45,000,000) | (245,000,000)
Total long-term debt | 4,375,000,000 |  |  |  |  | 4,375,000,000 | 3,920,000,000
Short term obligations classified as long-term debt | 52,000,000 |  |  |  |  | 52,000,000 | 52,000,000
Face amount of debt instrument issued | 501,000,000 |  |  |  |  | 501,000,000 | 650,000,000
Duke Energy Ohio | Related Party |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Money pool/intercompany borrowings | 38,000,000 |  |  |  |  | 38,000,000 | 189,000,000
Short-term money pool/intercompany borrowings | 13,000,000 |  |  |  |  | 13,000,000 | 162,000,000
Duke Energy Ohio | Tax-exempt bonds |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Short term obligations classified as long-term debt | 27,000,000 |  |  |  |  | 27,000,000 | 27,000,000
Duke Energy Indiana |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unsecured Debt | 386,000,000 |  |  |  |  | 386,000,000 | 390,000,000
First mortgage bonds | 4,238,000,000 |  |  |  |  | 4,238,000,000 | 3,937,000,000
Finance leases | 10,000,000 |  |  |  |  | 10,000,000 | 10,000,000
Tax exempt bonds | 352,000,000 |  |  |  |  | 352,000,000 | 352,000,000
Unamortized debt discount and premium, net | (16,000,000) |  |  |  |  | (16,000,000) | (16,000,000)
Unamortized debt issuance costs | (27,000,000) |  |  |  |  | (27,000,000) | (25,000,000)
Total debt | 5,268,000,000 |  |  |  |  | 5,268,000,000 | 4,808,000,000
Current maturities of long-term debt | (4,000,000) |  |  |  |  | (4,000,000) | (4,000,000)
Total long-term debt | 5,089,000,000 |  |  |  |  | 5,089,000,000 | 4,794,000,000
Short term obligations classified as long-term debt | 435,000,000 |  |  |  |  | 435,000,000 | 435,000,000
Face amount of debt instrument issued | 300,000,000 |  |  |  |  | 300,000,000 | 300,000,000
Duke Energy Indiana | Related Party |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Money pool/intercompany borrowings | 325,000,000 |  |  |  |  | 325,000,000 | 160,000,000
Short-term money pool/intercompany borrowings | 175,000,000 |  |  |  |  | 175,000,000 | 10,000,000
Duke Energy Indiana | Tax-exempt bonds |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Short term obligations classified as long-term debt | 285,000,000 |  |  |  |  | 285,000,000 | 285,000,000
Piedmont |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unsecured Debt | 4,275,000,000 |  |  |  |  | 4,275,000,000 | 4,030,000,000
Unamortized debt discount and premium, net | (7,000,000) |  |  |  |  | (7,000,000) | (8,000,000)
Unamortized debt issuance costs | (17,000,000) |  |  |  |  | (17,000,000) | (19,000,000)
Total debt | 4,860,000,000 |  |  |  |  | 4,860,000,000 | 4,742,000,000
Current maturities of long-term debt | (490,000,000) |  |  |  |  | (490,000,000) | (205,000,000)
Total long-term debt | 3,761,000,000 |  |  |  |  | 3,761,000,000 | 3,798,000,000
Face amount of debt instrument issued |  |  |  |  |  |  | 375,000,000
Piedmont | Related Party |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Money pool/intercompany borrowings | 609,000,000 |  |  |  |  | 609,000,000 | 739,000,000
Short-term money pool/intercompany borrowings | $ 609,000,000 |  |  |  |  | $ 609,000,000 | $ 739,000,000

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