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Derivative Instruments (Net Notional Volumes and Additional Disclosures) (Details) bbl in Millions, MWh in Millions, MMBTU in Millions, $ in Billions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 USD ($) MWh MMBTU bbl | Mar. 31, 2023 MMBTU bbl | Dec. 31, 2023 USD ($) MWh
Interest Rate Swap [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amount | $ | $ 17.5 |  | $ 25.6
Foreign currency contracts |  |  |
Derivative [Line Items] |  |  |
Notional amount | $ | $ 1.2 |  | $ 0.5
Short [Member] | Commodity contract - Power [Member] |  |  |
Derivative [Line Items] |  |  |
Non-monetary net notional amount (in MWh) | MWh | (159) |  | (167)
Short [Member] | Commodity contract - Natural gas [Member] |  |  |
Derivative [Line Items] |  |  |
Non-monetary net notional amount (in MMBtu) | MMBTU | 1,154 | 1,452 |
Short [Member] | Commodity contract - Oil [Member] |  |  |
Derivative [Line Items] |  |  |
Non-monetary net notional amount (in barrels) | bbl | (38) | (42) |
Florida Power & Light Company | Short [Member] | Commodity contract - Power [Member] |  |  |
Derivative [Line Items] |  |  |
Non-monetary net notional amount (in MWh) | MWh | 0 |  | 0
Florida Power & Light Company | Short [Member] | Commodity contract - Oil [Member] |  |  |
Derivative [Line Items] |  |  |
Non-monetary net notional amount (in barrels) | bbl | 0 | 0 |
Florida Power & Light Company | Long [Member] | Commodity contract - Natural gas [Member] |  |  |
Derivative [Line Items] |  |  |
Non-monetary net notional amount (in MMBtu) | MMBTU | 751 | 717 |

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