Asset Retirement Obligations (Recorded on the Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	$ 9,992	$ 9,156	$ 12,728
Less: Current portion	650	596
Total noncurrent asset retirement obligation	9,342	8,560
Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	4,493
Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	5,173
Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	326
Duke Energy Carolinas
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	3,990	4,013	5,382
Less: Current portion	247	224
Total noncurrent asset retirement obligation	3,743	3,789
Duke Energy Carolinas | Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	2,050
Duke Energy Carolinas | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,867
Duke Energy Carolinas | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	73
Progress Energy
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	4,548	4,145	6,181
Less: Current portion	231	245
Total noncurrent asset retirement obligation	4,317	3,900
Progress Energy | Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	2,425
Progress Energy | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,993
Progress Energy | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	130
Duke Energy Progress
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	4,334	3,870	5,823
Less: Current portion	230	244
Total noncurrent asset retirement obligation	4,104	3,626
Duke Energy Progress | Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	2,318
Duke Energy Progress | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,975
Duke Energy Progress | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	41
Duke Energy Florida
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	214	275	358
Less: Current portion	1	1
Total noncurrent asset retirement obligation	213	274
Duke Energy Florida | Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	107
Duke Energy Florida | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	18
Duke Energy Florida | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	89
Duke Energy Ohio
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	139	136	154
Less: Current portion	8	6
Total noncurrent asset retirement obligation	131	130
Duke Energy Ohio | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	72
Duke Energy Ohio | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	67
Duke Energy Indiana
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,268	809	951
Less: Current portion	164	120
Total noncurrent asset retirement obligation	1,104	689
Duke Energy Indiana | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,241
Duke Energy Indiana | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	27
Piedmont
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	29	26	$ 26
Total noncurrent asset retirement obligation	29	$ 26
Piedmont | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	$ 29