Derivatives and Hedging (Location and Fair Value Amounts of Derivatives Reflected in the Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Total Derivative Assets	$ 434	$ 189
Total Derivative Liabilities	319	729
Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	267	61
Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	167	128
Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	145	409
Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	174	320
Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	109	82
Total Derivative Liabilities	242	609
Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	320	63
Total Derivative Liabilities	3	103
Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	74	17
Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	5	44
Foreign Currency Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	5
Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	108	31
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	52	17
Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		25
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		26
Designated as Hedging Instruments | Foreign Currency Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	35
Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	39
Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	49	25
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	60	57
Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	108	354
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	134	255
Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	110	5
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	50
Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	2	13
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	39
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent
Derivatives, Fair Value [Line Items]
Total Derivative Assets		10
Not Designated as Hedging Instruments | Foreign Currency Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		17
Not Designated as Hedging Instruments | Foreign Currency Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets		44
Duke Energy Carolinas
Derivatives, Fair Value [Line Items]
Total Derivative Assets	94	35
Total Derivative Liabilities	88	260
Duke Energy Carolinas | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	39	6
Duke Energy Carolinas | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	55	29
Duke Energy Carolinas | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	57	179
Duke Energy Carolinas | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	31	81
Duke Energy Carolinas | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	49	27
Total Derivative Liabilities	88	244
Duke Energy Carolinas | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	45	8
Total Derivative Liabilities		16
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	20	1
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	29	26
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	57	177
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	31	67
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	19	5
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	26
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		2
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		14
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent
Derivatives, Fair Value [Line Items]
Total Derivative Assets		3
Progress Energy
Derivatives, Fair Value [Line Items]
Total Derivative Assets	127	34
Total Derivative Liabilities	58	234
Progress Energy | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	72	3
Progress Energy | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	55	31
Progress Energy | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	34	149
Progress Energy | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	24	85
Progress Energy | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	49	34
Total Derivative Liabilities	56	199
Progress Energy | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	78
Total Derivative Liabilities	2	35
Progress Energy | Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		0
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	17	3
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	32	31
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	32	138
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	24	61
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	55
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	23
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	2	11
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		24
Duke Energy Progress
Derivatives, Fair Value [Line Items]
Total Derivative Assets	109	32
Total Derivative Liabilities	57	219
Duke Energy Progress | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	61	1
Duke Energy Progress | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	48	31
Duke Energy Progress | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	33	149
Duke Energy Progress | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	24	70
Duke Energy Progress | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	49	32
Total Derivative Liabilities	56	199
Duke Energy Progress | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	60
Total Derivative Liabilities	1	20
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	17	1
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	32	31
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	32	138
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	24	61
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	44
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	16
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	11
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		9
Duke Energy Florida
Derivatives, Fair Value [Line Items]
Total Derivative Assets	18	2
Total Derivative Liabilities	1	15
Duke Energy Florida | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	11	2
Duke Energy Florida | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	7
Duke Energy Florida | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1
Duke Energy Florida | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		15
Duke Energy Florida | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets		2
Duke Energy Florida | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	18
Total Derivative Liabilities	1	15
Duke Energy Florida | Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		0
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets		2
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	11
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	7
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		15
Duke Energy Ohio
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Total Derivative Liabilities	1	1
Duke Energy Ohio | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Duke Energy Ohio | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	1
Duke Energy Ohio | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Duke Energy Ohio | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	1
Duke Energy Ohio | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	1
Duke Energy Indiana
Derivatives, Fair Value [Line Items]
Total Derivative Assets	44	25
Total Derivative Liabilities	3	18
Duke Energy Indiana | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	44	18
Duke Energy Indiana | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets		7
Duke Energy Indiana | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	3	18
Duke Energy Indiana | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	8	18
Total Derivative Liabilities	3	18
Duke Energy Indiana | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	36	7
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	8	18
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	3	18
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	36
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent
Derivatives, Fair Value [Line Items]
Total Derivative Assets		7
Piedmont
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Total Derivative Liabilities	94	147
Piedmont | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Piedmont | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	16	20
Piedmont | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	78	127
Piedmont | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Total Derivative Liabilities	94	147
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	16	20
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	$ 78	$ 127