Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2023
Defined Benefit Plan Disclosure [Line Items]
Maximum years of participation (in years)	35 years
Matching contribution (as a percent)	100.00%
Eligible pay (as a percent)	6.00%
Additional contribution for employees not participating in defined pension plans (as a percent)	4.00%
Vesting period (in years)	3 years
Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Average Earnings, Period	3 years
Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Average Earnings, Period	5 years
Master Trust
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	100.00%
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 270	$ 676
Average remaining service period (in years)	15 years
Accumulated Benefit Obligation at measurement date	$ 5,948	6,267
Projected benefit obligation	5,980	6,299	$ 6,358
Benefits paid	645	607
Employer contributions	100	$ 100	$ 58
Expected long-term rate of return on plan assets (as a percent)			6.50%
Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	203
Projected benefit obligation	203
Benefits paid	30
Employer contributions	$ 30
Pension Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets (as a percent)	8.50%	6.50%
Pension Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets (as a percent)	7.00%	8.25%
Pension Plan | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Master trust allocation (as a percent)	98.00%	98.00%
Expected long-term rate of return on plan assets (as a percent)	7.00%
Pension Plan | Master Trust | Liability Hedging Assets
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)				35.00%
Pension Plan | Master Trust | Return Seeking Assets
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)				65.00%
Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 7	$ 19
Average remaining service period (in years)	7 years
Projected benefit obligation	$ 334	347	$ 437
Benefits paid	37	$ 58
Employer contributions	$ 27
Expected long-term rate of return on plan assets (as a percent)		8.25%	6.50%
Other Post-Retirement Benefit Plans | Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets (as a percent)	6.50%	6.50%
Other Post-Retirement Benefit Plans | Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets (as a percent)	8.25%
Other Post-Retirement Benefit Plans | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Master trust allocation (as a percent)	2.00%	2.00%
Expected long-term rate of return on plan assets (as a percent)	8.50%
Target allocation (as a percent)	100.00%
Other Post-Retirement Benefit Plans | Master Trust | Liability Hedging Assets
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)				80.00%
Other Post-Retirement Benefit Plans | Master Trust | Return Seeking Assets
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)				20.00%
Duke Energy Carolinas | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 73	$ 183
Average remaining service period (in years)	11 years
Accumulated Benefit Obligation at measurement date	$ 1,444	1,517
Projected benefit obligation	1,444	1,514	$ 1,554
Benefits paid	177	177
Employer contributions	26	26	15
Duke Energy Carolinas | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	8
Projected benefit obligation	8
Benefits paid	2
Employer contributions	2
Duke Energy Carolinas | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 4	8
Average remaining service period (in years)	6 years
Projected benefit obligation	$ 63	69	112
Benefits paid	8	14
Employer contributions	4
Progress Energy | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 98	229
Average remaining service period (in years)	11 years
Accumulated Benefit Obligation at measurement date	$ 1,861	1,975
Projected benefit obligation	1,875	1,990	1,975
Benefits paid	198	159
Employer contributions	23	22	13
Progress Energy | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	72
Projected benefit obligation	72
Benefits paid	8
Employer contributions	$ 8
Progress Energy | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Average remaining service period (in years)	5 years
Projected benefit obligation	$ 146	146	168
Benefits paid	15	22
Employer contributions	14
Duke Energy Progress | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 46	107
Average remaining service period (in years)	11 years
Accumulated Benefit Obligation at measurement date	$ 838	912
Projected benefit obligation	838	911	909
Benefits paid	111	80
Employer contributions	14	13	8
Duke Energy Progress | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	22
Projected benefit obligation	22
Benefits paid	3
Employer contributions	$ 3
Duke Energy Progress | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Average remaining service period (in years)	5 years
Projected benefit obligation	$ 87	84	95
Benefits paid	6	$ 11
Employer contributions	7
Duke Energy Florida
Defined Benefit Plan Disclosure [Line Items]
Fair value evaluation period (in years)		5 years
Duke Energy Florida | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 53	$ 120
Average remaining service period (in years)	12 years
Accumulated Benefit Obligation at measurement date	$ 1,013	1,053
Projected benefit obligation	1,027	1,069	1,055
Benefits paid	88	78
Employer contributions	9	9	5
Duke Energy Florida | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	27
Projected benefit obligation	27
Benefits paid	3
Employer contributions	$ 3
Duke Energy Florida | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Average remaining service period (in years)	7 years
Projected benefit obligation	$ 60	60	69
Benefits paid	6	10
Employer contributions	7
Duke Energy Indiana | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 17	45
Average remaining service period (in years)	13 years
Accumulated Benefit Obligation at measurement date	$ 466	494
Projected benefit obligation	471	496	499
Benefits paid	41	40
Employer contributions	8	8	5
Duke Energy Indiana | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	1
Projected benefit obligation	$ 1
Duke Energy Indiana | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Average remaining service period (in years)	6 years
Projected benefit obligation	$ 20	24	30
Benefits paid	3	6
Piedmont | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 10	23
Average remaining service period (in years)	9 years
Accumulated Benefit Obligation at measurement date	$ 181	176
Projected benefit obligation	181	175	170
Benefits paid	12	16
Employer contributions	3	3	2
Piedmont | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	2
Projected benefit obligation	2
Piedmont | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 3	4
Average remaining service period (in years)	6 years
Projected benefit obligation	$ 15	15	21
Benefits paid	1	2
Duke Energy Ohio | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 11	29
Average remaining service period (in years)	14 years
Accumulated Benefit Obligation at measurement date	$ 304	317
Projected benefit obligation	309	325	333
Benefits paid	33	31
Employer contributions	5	5	3
Duke Energy Ohio | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	2
Projected benefit obligation	$ 2
Duke Energy Ohio | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets		1
Average remaining service period (in years)	6 years
Projected benefit obligation	$ 18	19	20
Benefits paid	2	3
Employer contributions	2
Other Nonoperating Income (Expense)
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets		24
Duke Energy Retirement Cash Balance Plan
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	72	$ 0	117
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense)
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	12		22
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Carolinas
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	3		3
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Progress Energy
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	5		5
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Progress
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	5		5
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Florida
Defined Benefit Plan Disclosure [Line Items]
Settlement charge			1
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Piedmont
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	1		6
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Ohio
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	2		5
Regulatory Assets, Noncurrent | Noncurrent assets
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	60		95
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Carolinas
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	31		35
Regulatory Assets, Noncurrent | Noncurrent assets | Progress Energy
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	23		23
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Progress
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	16		16
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Florida
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	7		7
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Indiana
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	3		8
Regulatory Assets, Noncurrent | Noncurrent assets | Piedmont
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	$ 4		$ 29