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Debt and Credit Facilities (Summary of Debt and Related Terms) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate (as a percent) | 4.37% | 4.35%
Unsecured Debt | $ 34,283 | $ 30,435
Secured Debt | 3,672 | 4,202
First mortgage bonds | 39,842 | 37,443
Finance leases | 570 | 639
Tax exempt bonds | 1,331 | 1,331
Notes payable and commercial paper | 4,213 | 4,925
Fair value hedge carrying value adjustment | (82) | 32
Unamortized debt discount and premium, net | 845 | 916
Unamortized debt issuance costs | (401) | (383)
Total debt | 84,273 | 79,540
Short-term notes payable and commercial paper | (3,584) | (4,288)
Current maturities of long-term debt | (4,349) | (2,800)
Total long-term debt | 76,340 | 72,452
Short term obligations classified as long-term debt | $ 937 | $ 937
Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate (as a percent) | 4.53% | 4.36%
Secured Debt |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate (as a percent) | 3.75% | 4.23%
First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate (as a percent) | 4.24% | 4.18%
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) | 3.85% | 3.89%
Short term obligations classified as long-term debt | $ 312 | $ 312
Notes Payable And Commercial Paper |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate (as a percent) | 4.67% | 5.58%
Short term obligations classified as long-term debt | $ 625 | $ 625
Weighted average days to maturity (in days) | 13 days | 23 days
Purchase Accounting Adjustments | Parent Company |  |
Debt Instrument [Line Items] |  |
Unamortized debt issuance costs | $ 23 | $ 25
Purchase Accounting Adjustments | Progress Energy |  |
Debt Instrument [Line Items] |  |
Unamortized debt discount and premium, net | 925 | 992
Purchase Accounting Adjustments | Piedmont |  |
Debt Instrument [Line Items] |  |
Unamortized debt discount and premium, net | 56 | 69
Duke Energy Carolinas |  |
Debt Instrument [Line Items] |  |
Unsecured Debt | 1,605 | 1,150
Secured Debt | 1,463 | 1,441
First mortgage bonds | 13,955 | 12,955
Finance leases | 270 | 277
Unamortized debt discount and premium, net | (20) | (29)
Unamortized debt issuance costs | (83) | (82)
Total debt | 17,490 | 16,680
Current maturities of long-term debt | (521) | (19)
Total long-term debt | 16,969 | 15,993
Short term obligations classified as long-term debt | 300 | 300
Duke Energy Carolinas | Related Party |  |
Debt Instrument [Line Items] |  |
Money pool/intercompany borrowings | 300 | 968
Short-term money pool/intercompany borrowings |  | 668
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 | 2,085 | 1,800
Secured Debt | 2,147 | 2,379
First mortgage bonds | 19,223 | 18,550
Finance leases | 581 | 571
Tax exempt bonds | 500 | 500
Unamortized debt discount and premium, net | (44) | (46)
Unamortized debt issuance costs | (146) | (145)
Total debt | 25,573 | 24,802
Current maturities of long-term debt | (1,517) | (661)
Total long-term debt | 22,979 | 23,098
Progress Energy | Related Party |  |
Debt Instrument [Line Items] |  |
Money pool/intercompany borrowings | 1,227 | 1,193
Short-term money pool/intercompany borrowings | 1,077 | 1,043
Duke Energy Progress |  |
Debt Instrument [Line Items] |  |
Unsecured Debt | 185 |
Secured Debt | 1,269 | 1,121
First mortgage bonds | 9,974 | 9,475
Finance leases | 515 | 552
Tax exempt bonds | 500 | 500
Unamortized debt discount and premium, net | (24) | (24)
Unamortized debt issuance costs | (65) | (60)
Total debt | 13,115 | 12,605
Current maturities of long-term debt | (983) | (72)
Total long-term debt | 11,521 | 11,642
Short term obligations classified as long-term debt | 150 | 150
Duke Energy Progress | Related Party |  |
Debt Instrument [Line Items] |  |
Money pool/intercompany borrowings | 761 | 1,041
Short-term money pool/intercompany borrowings | 611 | 891
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 | 250 | 150
Secured Debt | 879 | 1,258
First mortgage bonds | 9,247 | 9,075
Finance leases | 66 | 19
Unamortized debt discount and premium, net | (19) | (20)
Unamortized debt issuance costs | (76) | (81)
Total debt | 10,814 | 10,553
Current maturities of long-term debt | (534) | (589)
Total long-term debt | 9,814 | 9,812
Duke Energy Florida | Related Party |  |
Debt Instrument [Line Items] |  |
Money pool/intercompany borrowings | 467 | 152
Short-term money pool/intercompany borrowings | 466 | 152
Duke Energy Florida | Purchase Accounting Adjustments |  |
Debt Instrument [Line Items] |  |
Finance leases |  | 63
Duke Energy Ohio |  |
Debt Instrument [Line Items] |  |
Unsecured Debt | 1,380 | 1,155
First mortgage bonds | 2,722 | 2,300
Tax exempt bonds | 77 | 77
Unamortized debt discount and premium, net | (23) | (24)
Unamortized debt issuance costs | (18) | (15)
Total debt | 4,327 | 4,131
Current maturities of long-term debt | (245) | 0
Total long-term debt | 3,920 | 3,518
Short term obligations classified as long-term debt | 52 | 52
Duke Energy Ohio | Related Party |  |
Debt Instrument [Line Items] |  |
Money pool/intercompany borrowings | 189 | 638
Short-term money pool/intercompany borrowings | 162 | 613
Duke Energy Ohio | Tax-exempt bonds |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 27 | 27
Duke Energy Indiana |  |
Debt Instrument [Line Items] |  |
Unsecured Debt | 390 | 393
First mortgage bonds | 3,937 | 3,638
Finance leases | 10 | 9
Tax exempt bonds | 352 | 352
Unamortized debt discount and premium, net | (16) | (16)
Unamortized debt issuance costs | (25) | (25)
Total debt | 4,808 | 4,758
Current maturities of long-term debt | (4) | (4)
Total long-term debt | 4,794 | 4,498
Short term obligations classified as long-term debt | 435 | 435
Duke Energy Indiana | Related Party |  |
Debt Instrument [Line Items] |  |
Money pool/intercompany borrowings | 160 | 407
Short-term money pool/intercompany borrowings | 10 | 256
Duke Energy Indiana | Tax-exempt bonds |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 285 | 285
Piedmont |  |
Debt Instrument [Line Items] |  |
Unsecured Debt | 4,030 | 3,695
Unamortized debt discount and premium, net | (8) | (8)
Unamortized debt issuance costs | (19) | (19)
Total debt | 4,742 | 4,206
Current maturities of long-term debt | (205) | (40)
Total long-term debt | 3,798 | 3,628
Piedmont | Related Party |  |
Debt Instrument [Line Items] |  |
Money pool/intercompany borrowings | 739 | 538
Short-term money pool/intercompany borrowings | $ 739 | $ 538

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