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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, 2023 | Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special use funds: nuclear decommissioning fund assets | $ 7,861 | $ 7,495
Special Use Funds Storm Fund Assets | 1 | 1
Available for sale debt securities amortized cost | $ 3,369 | 2,858
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity | 9 years |
Other investments weighted average maturity | 5 years |
Carrying Amount |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special Use Funds Fair Value Disclosure | $ 1,023 | 998
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure | 236 | 221
Long Term Debt Including Current Maturities Fair Value And Carrying Value | 65,930 | 61,889
Estimated Fair Value |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special Use Funds Fair Value Disclosure | 1,024 | 999
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure | 236 | 221
Long Term Debt Including Current Maturities Fair Value And Carrying Value | 62,621 | 57,892
Florida Power & Light Company |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Special use funds: nuclear decommissioning fund assets | 5,471 | 5,220
Special Use Funds Storm Fund Assets | 1 | 1
Available for sale debt securities amortized cost | $ 1,877 | 1,873
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity | 9 years |
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 | $ 752 | 744
Long Term Debt Including Current Maturities Fair Value And Carrying Value | 23,457 | 21,002
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 | 752 | 744
Long Term Debt Including Current Maturities Fair Value And Carrying Value | $ 22,307 | $ 19,364

X
- 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. Fair value and carrying value of long-term debt including current maturities at the balance sheet date. + References No definition available. + Details
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- Definition Other investments that are carried at estimated fair value or cost, which approximates fair value. + References No definition available. + Details
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- Definition This item represents the weighted-average maturity of debt securities in the other investment 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 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 Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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