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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 | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special use funds: nuclear decommissioning fund assets | $ 9,172 | $ 8,697
Special Use Funds Storm Fund Assets | 1 | 1
Available for sale debt securities amortized cost | $ 3,409 | 3,329
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity | 8 years |
Other investments weighted average maturity | 6 years |
Other assets, current | $ 1,219 | 1,335
Other | 8,124 | 7,704
Carrying Amount |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special Use Funds Fair Value Disclosure | 1,247 | 1,186
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure | 626 | 777
Long Term Debt Including Current Maturities Fair Value And Carrying Value | 72,087 | 68,306
Other assets, current | 400 | 567
Estimated Fair Value |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special Use Funds Fair Value Disclosure | 1,248 | 1,187
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure | 626 | 777
Long Term Debt Including Current Maturities Fair Value And Carrying Value | 67,997 | 64,103
Other | 226 | 210
Florida Power & Light Company |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special use funds: nuclear decommissioning fund assets | 6,369 | 6,049
Special Use Funds Storm Fund Assets | 1 | 1
Available for sale debt securities amortized cost | $ 1,710 | 1,693
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity | 8 years |
Other assets, current | $ 135 | 144
Other | 640 | 654
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 | 884 | 856
Long Term Debt Including Current Maturities Fair Value And Carrying Value | 24,059 | 25,274
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 | 885 | 856
Long Term Debt Including Current Maturities Fair Value And Carrying Value | $ 22,403 | $ 23,430

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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 This item represents the weighted-average maturity of debt securities (in years) in nuclear decommissioning funds at the balance sheet date and which are categorized neither as held-to-maturity nor trading securities. + 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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