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Debt and Credit Facilities (Annual Maturities) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	$ 4,349
2026	4,925
2027	3,082
2028	3,937
2029	4,971
Thereafter	58,976
Total long-term debt, including current maturities	80,240
Unamortized debt discount and premium, net	(1,000)
Purchase Accounting Adjustments
Long-term Debt, Fiscal Year Maturity [Abstract]
Unamortized debt discount and premium, net	1,004
Duke Energy Carolinas
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	521
2026	1,078
2027	26
2028	976
2029	778
Thereafter	14,214
Total long-term debt, including current maturities	17,593
Progress Energy
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	1,525
2026	539
2027	807
2028	1,411
2029	1,618
Thereafter	18,786
Total long-term debt, including current maturities	24,686
Duke Energy Progress
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	984
2026	470
2027	89
2028	593
2029	847
Thereafter	9,610
Total long-term debt, including current maturities	12,593
Duke Energy Florida
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	541
2026	69
2027	718
2028	819
2029	771
Thereafter	7,525
Total long-term debt, including current maturities	10,443
Duke Energy Ohio
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	245
2026	45
2027	77
2028	40
2029	530
Thereafter	3,270
Total long-term debt, including current maturities	4,207
Duke Energy Indiana
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	4
2026	4
2027	27
2028	7
2029	155
Thereafter	4,643
Total long-term debt, including current maturities	4,840
Piedmont
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	205
2026	40
2027	300
2029	660
Thereafter	2,825
Total long-term debt, including current maturities	$ 4,030

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