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Defined Benefits (Tables) | 9 Months Ended
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Sep. 30, 2025
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule Of Net Periodic Defined Benefit Costs (Credits) | Following are the net periodic defined benefit costs (credits) of the plans sponsored by PPL and its subsidiaries for the periods ended September 30:
| Pension Benefits
| Three Months |  | Nine Months
| 2025 |  | 2024 |  | 2025 |  | 2024
PPL |  |  |  |  |  |  |
Service cost | $ | 8 |  |  | $ | 9 |  |  | $ | 23 |  |  | $ | 26 |
Interest cost | 46 |  |  | 45 |  |  | 138 |  |  | 137 |
Expected return on plan assets | (72) |  |  | (74) |  |  | (215) |  |  | (224) |
Amortization of: |  |  |  |  |  |  |
Prior service cost | — |  |  | 1 |  |  | — |  |  | 2 |
Actuarial loss | 4 |  |  | 3 |  |  | 13 |  |  | 8 |
Net periodic defined benefit costs (credits) | $ | (14) |  |  | $ | (16) |  |  | $ | (41) |  |  | $ | (51) |
| Other Postretirement Benefits
| Three Months |  | Nine Months
| 2025 |  | 2024 |  | 2025 |  | 2024
PPL |  |  |  |  |  |  |
Service cost | $ | 2 |  |  | $ | 2 |  |  | $ | 5 |  |  | $ | 5 |
Interest cost | 8 |  |  | 8 |  |  | 23 |  |  | 22 |
Expected return on plan assets | (7) |  |  | (8) |  |  | (22) |  |  | (23) |
Amortization of: |  |  |  |  |  |  |
Prior service cost | — |  |  | — |  |  | 1 |  |  | 1 |
Actuarial loss | (1) |  |  | (1) |  |  | (3) |  |  | (4) |
Net periodic defined benefit costs (credits) | $ | 2 |  |  | $ | 1 |  |  | $ | 4 |  |  | $ | 1 |

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-3 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-4 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-2 + Details
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