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Leases (Finance Lease Maturities) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Finance Lease, Liability, Payment, Due
2026	$ 95
2027	88
2028	84
2029	81
2030	82
Thereafter	497
Total finance lease payments	927
Less: Amounts representing interest	(351)
Total finance lease liabilities	576	$ 570
Duke Energy Carolinas
Finance Lease, Liability, Payment, Due
2026	40
2027	40
2028	39
2029	38
2030	39
Thereafter	319
Total finance lease payments	515
Less: Amounts representing interest	(243)
Total finance lease liabilities	272	270
Progress Energy
Finance Lease, Liability, Payment, Due
2026	94
2027	91
2028	90
2029	90
2030	90
Thereafter	437
Total finance lease payments	892
Less: Amounts representing interest	(323)
Total finance lease liabilities	569	581
Duke Energy Progress
Finance Lease, Liability, Payment, Due
2026	81
2027	82
2028	82
2029	82
2030	82
Thereafter	323
Total finance lease payments	732
Less: Amounts representing interest	(251)
Total finance lease liabilities	481	515
Duke Energy Florida
Finance Lease, Liability, Payment, Due
2026	13
2027	9
2028	8
2029	8
2030	8
Thereafter	114
Total finance lease payments	160
Less: Amounts representing interest	(72)
Total finance lease liabilities	88	66
Duke Energy Indiana
Finance Lease, Liability, Payment, Due
2026	2
2027	2
2028	1
2029	1
2030	1
Thereafter	18
Total finance lease payments	25
Less: Amounts representing interest	(15)
Total finance lease liabilities	$ 10	$ 10

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