Leases (Finance Lease Maturities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Finance Lease, Liability, Payment, Due
2024	$ 157
2025	88
2026	83
2027	76
2028	74
Thereafter	511
Total finance lease payments	989
Less: Amounts representing interest	(350)
Total finance lease liabilities	639	$ 764
Duke Energy Carolinas
Finance Lease, Liability, Payment, Due
2024	38
2025	38
2026	38
2027	38
2028	38
Thereafter	389
Total finance lease payments	579
Less: Amounts representing interest	(302)
Total finance lease liabilities	277	284
Progress Energy
Finance Lease, Liability, Payment, Due
2024	88
2025	85
2026	86
2027	83
2028	81
Thereafter	474
Total finance lease payments	897
Less: Amounts representing interest	(326)
Total finance lease liabilities	571	628
Duke Energy Progress
Finance Lease, Liability, Payment, Due
2024	79
2025	80
2026	81
2027	81
2028	81
Thereafter	474
Total finance lease payments	876
Less: Amounts representing interest	(324)
Total finance lease liabilities	552	587
Duke Energy Florida
Finance Lease, Liability, Payment, Due
2024	9
2025	5
2026	5
2027	2
Total finance lease payments	21
Less: Amounts representing interest	(2)
Total finance lease liabilities	19	41
Duke Energy Indiana
Finance Lease, Liability, Payment, Due
2024	1
2025	1
2026	1
2027	1
2028	1
Thereafter	21
Total finance lease payments	26
Less: Amounts representing interest	(17)
Total finance lease liabilities	$ 9	$ 9

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