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Employee Retirement Benefits (Tables) | 6 Months Ended
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Jun. 30, 2023
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 June 30, |  | Three Months Ended June 30, |  | Six Months Ended June 30, |  | Six Months Ended June 30, |  |  |  |
| 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  |  |  |  |  |  |  |
| (millions)
Service cost | $ | 16 |  |  | $ | 21 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 32 |  |  | $ | 43 |  |  | $ | 1 |  |  | $ | 1 |  |  |  |  |  |  |  |  |
Interest cost | 33 |  |  | 20 |  |  | 1 |  |  | 1 |  |  | 66 |  |  | 39 |  |  | 4 |  |  | 2 |  |  |  |  |  |  |  |  |
Expected return on plan assets | (98) |  |  | (90) |  |  | — |  |  | — |  |  | (196) |  |  | (181) |  |  | — |  |  | — |  |  |  |  |  |  |  |  |
Amortization of actuarial loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  |  |  |  |  |  |  |
Amortization of prior service benefit | — |  |  | (1) |  |  | — |  |  | (1) |  |  | — |  |  | (1) |  |  | — |  |  | (2) |  |  |  |  |  |  |  |  |
Special termination benefits(a) | — |  |  | 52 |  |  | — |  |  | — |  |  | — |  |  | 52 |  |  | — |  |  | — |  |  |  |  |  |  |  |  |
Net periodic cost (income) at NEE | $ | (49) |  |  | $ | 2 |  |  | $ | 2 |  |  | $ | 1 |  |  | $ | (98) |  |  | $ | (48) |  |  | $ | 5 |  |  | $ | 2 |  |  |  |  |  |  |  |  |
Net periodic cost (income) allocated to FPL | $ | (32) |  |  | $ | 7 |  |  | $ | 2 |  |  | $ | 1 |  |  | $ | (64) |  |  | $ | (27) |  |  | $ | 4 |  |  | $ | 2 |  |  |  |  |  |  |  |  |

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- References No definition available. + Details
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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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