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Non-Derivative Fair Value Measurements (Assets and Liabilities Measured on a Recurring Basis) (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring [Line Items] |  |
Restricted cash | $ 1,632 | $ 677
Fair value measurements made on a recurring basis [Member] |  |
Cash equivalents: |  |
Equity securities | 1,751 | 176
Special use funds: |  |
Equity securities | 4,425 | 5,511
U.S. Government and municipal bonds | 767 | 845
Corporate debt securities | 775 | 962
Asset-backed securities | 626 | 663
Other debt securities | 27 | 35
Other investments: |  |
Equity Securities | 35 | 72
Debt securities | 427 | 285
Level 1 | Fair value measurements made on a recurring basis [Member] |  |
Cash equivalents: |  |
Equity securities | 1,751 | 176
Special use funds: |  |
Equity securities | 2,056 | 2,538
U.S. Government and municipal bonds | 699 | 770
Corporate debt securities | 1 | 7
Asset-backed securities | 0 | 0
Other debt securities | 1 | 2
Other investments: |  |
Equity Securities | 34 | 70
Debt securities | 123 | 111
Level 2 | Fair value measurements made on a recurring basis [Member] |  |
Cash equivalents: |  |
Equity securities | 0 | 0
Special use funds: |  |
Equity securities | 2,369 | 2,973
U.S. Government and municipal bonds | 68 | 75
Corporate debt securities | 774 | 955
Asset-backed securities | 626 | 663
Other debt securities | 26 | 33
Other investments: |  |
Equity Securities | 1 | 2
Debt securities | 184 | 162
Level 3 | Fair value measurements made on a recurring basis [Member] |  |
Cash equivalents: |  |
Equity securities | 0 | 0
Special use funds: |  |
Equity securities | 0 | 0
U.S. Government and municipal bonds | 0 | 0
Corporate debt securities | 0 | 0
Asset-backed securities | 0 | 0
Other debt securities | 0 | 0
Other investments: |  |
Equity Securities | 0 | 0
Debt securities | 120 | 12
Current other assets | Level 1 | Fair value measurements made on a recurring basis [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring [Line Items] |  |
Restricted cash | 55 | 56
Florida Power & Light Company |  |
Fair Value, Assets and Liabilities Measured on Recurring [Line Items] |  |
Restricted cash | 39 | 53
Florida Power & Light Company | Fair value measurements made on a recurring basis [Member] |  |
Cash equivalents: |  |
Equity securities | 56 | 58
Special use funds: |  |
Equity securities | 2,899 | 3,552
U.S. Government and municipal bonds | 601 | 668
Corporate debt securities | 580 | 726
Asset-backed securities | 491 | 515
Other debt securities | 18 | 25
Other investments: |  |
Equity Securities | 13 | 13
Florida Power & Light Company | Level 1 | Fair value measurements made on a recurring basis [Member] |  |
Cash equivalents: |  |
Equity securities | 56 | 58
Special use funds: |  |
Equity securities | 745 | 862
U.S. Government and municipal bonds | 565 | 624
Corporate debt securities | 0 | 6
Asset-backed securities | 0 | 0
Other debt securities | 1 | 2
Other investments: |  |
Equity Securities | 13 | 13
Florida Power & Light Company | Level 2 | Fair value measurements made on a recurring basis [Member] |  |
Cash equivalents: |  |
Equity securities | 0 | 0
Special use funds: |  |
Equity securities | 2,154 | 2,690
U.S. Government and municipal bonds | 36 | 44
Corporate debt securities | 580 | 720
Asset-backed securities | 491 | 515
Other debt securities | 17 | 23
Other investments: |  |
Equity Securities | 0 | 0
Florida Power & Light Company | Level 3 | Fair value measurements made on a recurring basis [Member] |  |
Cash equivalents: |  |
Equity securities | 0 | 0
Special use funds: |  |
Equity securities | 0 | 0
U.S. Government and municipal bonds | 0 | 0
Corporate debt securities | 0 | 0
Asset-backed securities | 0 | 0
Other debt securities | 0 | 0
Other investments: |  |
Equity Securities | 0 | 0
Florida Power & Light Company | Current other assets | Level 1 | Fair value measurements made on a recurring basis [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring [Line Items] |  |
Restricted cash | 38 | $ 53
NextEra Energy Resources |  |
Other investments: |  |
Contingent consideration liabilities | $ 240 |

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