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Non-Derivative Fair Value Measurements (Fair Value of Instruments Recorded at Other Than Fair Value and Special Use Funds) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special use funds: nuclear decommissioning fund assets | $ 10,769 | $ 9,799
Available for sale debt securities amortized cost | $ 4,081 | 3,720
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity | 8 years |
Other investments weighted average maturity | 8 years |
Other assets, current | $ 1,185 | 1,438
Other | 10,903 | 9,459
Carrying Amount |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special Use Funds Fair Value Disclosure | 1,457 | 1,342
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure | 554 | 629
Long Term Debt Including Current Maturities Fair Value And Carrying Value | 87,760 | 80,446
Other assets, current | 348 | 396
Estimated Fair Value |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special Use Funds Fair Value Disclosure | 1,458 | 1,343
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure | 554 | 629
Long Term Debt Including Current Maturities Fair Value And Carrying Value | 85,990 | 76,428
Other | 206 | 233
Florida Power & Light Company |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special use funds: nuclear decommissioning fund assets | 7,575 | 6,874
Available for sale debt securities amortized cost | $ 1,828 | 1,780
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity | 8 years |
Other assets, current | $ 186 | 257
Other | 1,188 | 934
Florida Power & Light Company | Carrying Amount |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special Use Funds Fair Value Disclosure | 952 | 915
Long Term Debt Including Current Maturities Fair Value And Carrying Value | 27,512 | 26,745
Florida Power & Light Company | Estimated Fair Value |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special Use Funds Fair Value Disclosure | 953 | 916
Long Term Debt Including Current Maturities Fair Value And Carrying Value | $ 25,802 | $ 24,718

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. An amount representing decommission fund to pay for the costs of decontaminating and decommissioning of facilities through collection of revenues derived from utility assessments and government appropriations. + References No definition available. + Details
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- Definition The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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