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Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Jan. 01, 2026
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 | $ 847 | $ 270 |  |
Average remaining service period (in years) | 11 years |  |  |
Accumulated Benefit Obligation at measurement date | $ 5,839 | 5,948 |  |
Projected benefit obligation | 5,871 | 5,980 | $ 6,299 |
Benefits paid | 624 | 645 |  |
Employer contributions | 100 | $ 100 | $ 100 |
Pension Plan | Nonqualified Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Accumulated Benefit Obligation at measurement date | 187 |  |  |
Projected benefit obligation | 187 |  |  |
Benefits paid | 29 |  |  |
Employer contributions | $ 29 |  |  |
Pension Plan | Minimum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Expected long-term rate of return on plan assets (as a percent) | 8.50% | 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% | 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% |  |  |
Other Post-Retirement Benefit Plans |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual return on plan assets | $ 18 | $ 7 |  |
Average remaining service period (in years) | 7 years |  |  |
Projected benefit obligation | $ 321 | 334 | $ 347 |
Benefits paid | 35 | $ 37 |  |
Employer contributions | $ 26 |  |  |
Other Post-Retirement Benefit Plans | Minimum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Expected long-term rate of return on plan assets (as a percent) | 2.50% | 2.75% | 4.00% |
Other Post-Retirement Benefit Plans | Maximum |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Expected long-term rate of return on plan assets (as a percent) | 8.50% | 8.50% | 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% |  |  |
Duke Energy Carolinas | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual return on plan assets | $ 214 | $ 73 |  |
Average remaining service period (in years) | 11 years |  |  |
Accumulated Benefit Obligation at measurement date | $ 1,408 | 1,444 |  |
Projected benefit obligation | 1,408 | 1,444 | $ 1,514 |
Benefits paid | 181 | 177 |  |
Employer contributions | 27 | 26 | 26 |
Duke Energy Carolinas | Pension Plan | Nonqualified Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Accumulated Benefit Obligation at measurement date | 7 |  |  |
Projected benefit obligation | 7 |  |  |
Benefits paid | 1 |  |  |
Employer contributions | 1 |  |  |
Duke Energy Carolinas | Other Post-Retirement Benefit Plans |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual return on plan assets | $ 10 | 4 |  |
Average remaining service period (in years) | 7 years |  |  |
Projected benefit obligation | $ 57 | 63 | 69 |
Benefits paid | 8 | 8 |  |
Employer contributions | 3 |  |  |
Progress Energy | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual return on plan assets | $ 323 | 98 |  |
Average remaining service period (in years) | 9 years |  |  |
Accumulated Benefit Obligation at measurement date | $ 1,846 | 1,861 |  |
Projected benefit obligation | 1,859 | 1,875 | 1,990 |
Benefits paid | 186 | 198 |  |
Employer contributions | 23 | 23 | 22 |
Progress Energy | Pension Plan | Nonqualified Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Accumulated Benefit Obligation at measurement date | 69 |  |  |
Projected benefit obligation | 69 |  |  |
Benefits paid | 7 |  |  |
Employer contributions | $ 7 |  |  |
Progress Energy | Other Post-Retirement Benefit Plans |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Average remaining service period (in years) | 6 years |  |  |
Projected benefit obligation | $ 142 | 146 | 146 |
Benefits paid | 14 | 15 |  |
Employer contributions | 13 |  |  |
Duke Energy Progress | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual return on plan assets | $ 145 | 46 |  |
Average remaining service period (in years) | 9 years |  |  |
Accumulated Benefit Obligation at measurement date | $ 813 | 838 |  |
Projected benefit obligation | 814 | 838 | 911 |
Benefits paid | 103 | 111 |  |
Employer contributions | 14 | 14 | 13 |
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 | 2 |  |  |
Employer contributions | $ 2 |  |  |
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 | $ 86 | 87 | 84 |
Benefits paid | 8 | 6 |  |
Employer contributions | 8 |  |  |
Duke Energy Florida | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual return on plan assets | $ 176 | 53 |  |
Average remaining service period (in years) | 9 years |  |  |
Accumulated Benefit Obligation at measurement date | $ 1,023 | 1,013 |  |
Projected benefit obligation | 1,037 | 1,027 | 1,069 |
Benefits paid | 81 | 88 |  |
Employer contributions | 10 | 9 | 9 |
Duke Energy Florida | Pension Plan | Nonqualified Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Accumulated Benefit Obligation at measurement date | 25 |  |  |
Projected benefit obligation | 25 |  |  |
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 | $ 58 | 60 | 60 |
Benefits paid | 6 | 6 |  |
Employer contributions | 6 |  |  |
Duke Energy Indiana | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual return on plan assets | $ 52 | 17 |  |
Average remaining service period (in years) | 13 years |  |  |
Accumulated Benefit Obligation at measurement date | $ 469 | 466 |  |
Projected benefit obligation | 474 | 471 | 496 |
Benefits paid | 50 | 41 |  |
Employer contributions | 8 | 8 | 8 |
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 | $ 19 | 20 | 24 |
Benefits paid | 3 | 3 |  |
Employer contributions | 3 |  |  |
Piedmont | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual return on plan assets | $ 28 | 10 |  |
Average remaining service period (in years) | 9 years |  |  |
Accumulated Benefit Obligation at measurement date | $ 176 | 181 |  |
Projected benefit obligation | 176 | 181 | 175 |
Benefits paid | 16 | 12 |  |
Employer contributions | 3 | 3 | 3 |
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 | $ 4 | 3 |  |
Average remaining service period (in years) | 6 years |  |  |
Projected benefit obligation | $ 15 | 15 | 15 |
Benefits paid | 2 | 1 |  |
Employer contributions | 1 |  |  |
Duke Energy Ohio | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Actual return on plan assets | $ 31 | 11 |  |
Average remaining service period (in years) | 14 years |  |  |
Accumulated Benefit Obligation at measurement date | $ 300 | 304 |  |
Projected benefit obligation | 305 | 309 | 325 |
Benefits paid | 26 | 33 |  |
Employer contributions | 6 | 5 | 5 |
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 | $ 17 | 18 | $ 19 |
Benefits paid | 2 | 2 |  |
Employer contributions | $ 2 |  |  |
RCBP | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Average remaining service period (in years) | 9 years |  |  |
DELPP | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Average remaining service period (in years) | 15 years |  |  |
Duke Energy Retirement Cash Balance Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 72 |  |
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 12 |  |
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Carolinas |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 3 |  |
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Progress Energy |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 5 |  |
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Progress |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 5 |  |
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Piedmont |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 1 |  |
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Ohio |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 2 |  |
Regulatory Assets, Noncurrent | Noncurrent assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 60 |  |
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Carolinas |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 31 |  |
Regulatory Assets, Noncurrent | Noncurrent assets | Progress Energy |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 23 |  |
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Progress |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 16 |  |
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Florida |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 7 |  |
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Indiana |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | 3 |  |
Regulatory Assets, Noncurrent | Noncurrent assets | Piedmont |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charge |  | $ 4 |  |
Subsequent Event | Pension Plan | Master Trust | Liability Hedging Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target allocation (as a percent) |  |  |  | 45.00%
Subsequent Event | Pension Plan | Master Trust | Return Seeking Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target allocation (as a percent) |  |  |  | 55.00%
Subsequent Event | Other Post-Retirement Benefit Plans | Master Trust | Liability Hedging Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target allocation (as a percent) |  |  |  | 65.00%
Subsequent Event | Other Post-Retirement Benefit Plans | Master Trust | Return Seeking Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target allocation (as a percent) |  |  |  | 35.00%

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