XML 98 R58.htm IDEA: XBRL DOCUMENT
v3.25.2

Employee Benefit Plans | 6 Months Ended
--- | ---
Jun. 30, 2025
Retirement Benefits [Abstract] |
Employee Benefit Plans | EMPLOYEE BENEFIT PLANS DEFINED BENEFIT RETIREMENT PLANS Duke Energy and certain subsidiaries maintain, and the Subsidiary Registrants participate in, qualified and non-qualified, non-contributory defined benefit retirement plans. Duke Energy's policy is to fund amounts on an actuarial basis to provide assets sufficient to meet benefit payments to be paid to plan participants. QUALIFIED PENSION PLANS The following tables include the components of net periodic pension costs for qualified pension plans.
| Three Months Ended June 30, 2025
|  |  | Duke |  |  |  | Duke |  | Duke |  | Duke |  | Duke |  |
| Duke |  | Energy |  | Progress |  | Energy |  | Energy |  | Energy |  | Energy |  |
(in millions) | Energy |  | Carolinas |  | Energy |  | Progress |  | Florida |  | Ohio |  | Indiana |  | Piedmont
Service cost | $ | 27 |  |  | $ | 9 |  |  | $ | 8 |  |  | $ | 4 |  |  | $ | 3 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | 1 |
Interest cost on projected benefit obligation | 82 |  |  | 20 |  |  | 26 |  |  | 12 |  |  | 15 |  |  | 4 |  |  | 6 |  |  | 2 |
Expected return on plan assets | (149) |  |  | (38) |  |  | (55) |  |  | (25) |  |  | (30) |  |  | (6) |  |  | (10) |  |  | (5) |
Amortization of actuarial loss | 15 |  |  | 3 |  |  | 4 |  |  | 2 |  |  | 2 |  |  | — |  |  | 1 |  |  | 1 |
Amortization of prior service credit | (3) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1) |  |  | (1) |
Amortization of settlement charges | 7 |  |  | 3 |  |  | 2 |  |  | 2 |  |  | — |  |  | — |  |  | 1 |  |  | 1 |
Net periodic pension costs | $ | (21) |  |  | $ | (3) |  |  | $ | (15) |  |  | $ | (5) |  |  | $ | (10) |  |  | $ | (1) |  |  | $ | (1) |  |  | $ | (1) |
| Three Months Ended June 30, 2024
|  |  | Duke |  |  |  | Duke |  | Duke |  | Duke |  | Duke |  |
| Duke |  | Energy |  | Progress |  | Energy |  | Energy |  | Energy |  | Energy |  |
(in millions) | Energy |  | Carolinas |  | Energy |  | Progress |  | Florida |  | Ohio |  | Indiana |  | Piedmont
Service cost | $ | 29 |  |  | $ | 10 |  |  | $ | 8 |  |  | $ | 5 |  |  | $ | 4 |  |  | $ | — |  |  | $ | 1 |  |  | $ | 1 |
Interest cost on projected benefit obligation | 83 |  |  | 20 |  |  | 26 |  |  | 12 |  |  | 14 |  |  | 4 |  |  | 7 |  |  | 3 |
Expected return on plan assets | (154) |  |  | (40) |  |  | (54) |  |  | (25) |  |  | (29) |  |  | (7) |  |  | (11) |  |  | (5) |
Amortization of actuarial loss | 8 |  |  | 2 |  |  | 3 |  |  | 2 |  |  | 1 |  |  | 1 |  |  | 1 |  |  | — |
Amortization of prior service credit | (4) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1) |  |  | (2) |
Amortization of settlement charges | 4 |  |  | 2 |  |  | 1 |  |  | 1 |  |  | 1 |  |  | — |  |  | 1 |  |  | 1 |
Net periodic pension costs | $ | (34) |  |  | $ | (6) |  |  | $ | (16) |  |  | $ | (5) |  |  | $ | (9) |  |  | $ | (2) |  |  | $ | (2) |  |  | $ | (2) |
| Six Months Ended June 30, 2025
|  |  | Duke |  |  |  | Duke |  | Duke |  | Duke |  | Duke |  |
| Duke |  | Energy |  | Progress |  | Energy |  | Energy |  | Energy |  | Energy |  |
(in millions) | Energy |  | Carolinas |  | Energy |  | Progress |  | Florida |  | Ohio |  | Indiana |  | Piedmont
Service cost | $ | 54 |  |  | $ | 18 |  |  | $ | 15 |  |  | $ | 9 |  |  | $ | 6 |  |  | $ | 1 |  |  | $ | 3 |  |  | $ | 2 |
Interest cost on projected benefit obligation | 164 |  |  | 39 |  |  | 52 |  |  | 23 |  |  | 29 |  |  | 8 |  |  | 13 |  |  | 5 |
Expected return on plan assets | (298) |  |  | (76) |  |  | (110) |  |  | (49) |  |  | (60) |  |  | (11) |  |  | (20) |  |  | (10) |
Amortization of actuarial loss | 30 |  |  | 7 |  |  | 9 |  |  | 4 |  |  | 4 |  |  | 1 |  |  | 2 |  |  | 2 |
Amortization of prior service credit | (6) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1) |  |  | (3) |
Amortization of settlement charges | 13 |  |  | 6 |  |  | 4 |  |  | 3 |  |  | 1 |  |  | — |  |  | 1 |  |  | 2 |
Net periodic pension costs | $ | (43) |  |  | $ | (6) |  |  | $ | (30) |  |  | $ | (10) |  |  | $ | (20) |  |  | $ | (1) |  |  | $ | (2) |  |  | $ | (2) |
| Six Months Ended June 30, 2024
|  |  | Duke |  |  |  | Duke |  | Duke |  | Duke |  | Duke |  |
| Duke |  | Energy |  | Progress |  | Energy |  | Energy |  | Energy |  | Energy |  |
(in millions) | Energy |  | Carolinas |  | Energy |  | Progress |  | Florida |  | Ohio |  | Indiana |  | Piedmont
Service cost | $ | 57 |  |  | $ | 19 |  |  | $ | 16 |  |  | $ | 10 |  |  | $ | 7 |  |  | $ | 1 |  |  | $ | 3 |  |  | $ | 2 |
Interest cost on projected benefit obligation | 165 |  |  | 40 |  |  | 52 |  |  | 24 |  |  | 28 |  |  | 8 |  |  | 13 |  |  | 5 |
Expected return on plan assets | (308) |  |  | (81) |  |  | (108) |  |  | (50) |  |  | (58) |  |  | (13) |  |  | (21) |  |  | (10) |
Amortization of actuarial loss | 16 |  |  | 4 |  |  | 5 |  |  | 3 |  |  | 2 |  |  | 1 |  |  | 2 |  |  | 1 |
Amortization of prior service credit | (7) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1) |  |  | (4) |
Amortization of settlement charges | 9 |  |  | 4 |  |  | 2 |  |  | 2 |  |  | 1 |  |  | — |  |  | 1 |  |  | 2 |
Net periodic pension costs | $ | (68) |  |  | $ | (14) |  |  | $ | (33) |  |  | $ | (11) |  |  | $ | (20) |  |  | $ | (3) |  |  | $ | (3) |  |  | $ | (4) |
NON-QUALIFIED PENSION PLANS Net periodic pension costs for non-qualified pension plans were not material for the three and six months ended June 30, 2025, and 2024. OTHER POST-RETIREMENT BENEFIT PLANS Net periodic costs for OPEB plans were not material for the three and six months ended June 30, 2025, and 2024.

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for retirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (o) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (p) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (q) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480266/715-60-50-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480126/715-20-S99-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (l) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/715/tableOfContent Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (r)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (r)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration