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Employee Retirement Benefits (Tables) | 9 Months Ended
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Sep. 30, 2024
Retirement Benefits [Abstract] |
Net periodic benefit (income) cost | The components of net periodic cost (income) for the plans are as follows:
| Pension Benefits |  | Postretirement Benefits |  | Pension Benefits |  | Postretirement Benefits |  |  |  |
| Three Months Ended September 30, |  | Three Months Ended September 30, |  | Nine Months Ended September 30, |  | Nine Months Ended September 30, |  |  |  |
| 2024 |  | 2023 |  | 2024 |  | 2023 |  | 2024 |  | 2023 |  | 2024 |  | 2023 |  |  |  |  |  |  |  |
| (millions)
Service cost | $ | 17 |  |  | $ | 16 |  |  | $ | — |  |  | $ | — |  |  | $ | 53 |  |  | $ | 48 |  |  | $ | 1 |  |  | $ | 1 |  |  |  |  |  |  |  |  |
Interest cost | 33 |  |  | 33 |  |  | 2 |  |  | 3 |  |  | 99 |  |  | 99 |  |  | 6 |  |  | 7 |  |  |  |  |  |  |  |  |
Expected return on plan assets | (100) |  |  | (98) |  |  | — |  |  | — |  |  | (304) |  |  | (294) |  |  | — |  |  | — |  |  |  |  |  |  |  |  |
Special termination benefit(a) | (1) |  |  | — |  |  | — |  |  | — |  |  | 27 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |
Net periodic cost (income) at NEE | $ | (51) |  |  | $ | (49) |  |  | $ | 2 |  |  | $ | 3 |  |  | $ | (125) |  |  | $ | (147) |  |  | $ | 7 |  |  | $ | 8 |  |  |  |  |  |  |  |  |
Net periodic cost (income) allocated to FPL | $ | (32) |  |  | $ | (32) |  |  | $ | 2 |  |  | $ | 2 |  |  | $ | (72) |  |  | $ | (96) |  |  | $ | 6 |  |  | $ | 6 |  |  |  |  |  |  |  |  |
——————————————— (a)Reflects enhanced early retirement benefit.

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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