Derivative Instruments (Net Notional Volumes and Additional Disclosures) (Details) bbl in Millions, MWh in Millions, MMBTU in Millions, $ in Billions	9 Months Ended	12 Months Ended
Sep. 30, 2025 USD ($) MWh MMBTU bbl	Dec. 31, 2024 USD ($) MWh MMBTU bbl
Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount \| $	$ 44.0	$ 35.2
Foreign currency contracts
Derivative [Line Items]
Notional amount \| $	$ 3.2	$ 1.2
Short [Member] \| Commodity contract - Power [Member]
Derivative [Line Items]
Non-monetary net notional amount (in MWh) \| MWh	(260)	(189)
Short [Member] \| Commodity contract - Natural gas [Member]
Derivative [Line Items]
Non-monetary net notional amount (in MMBtu) \| MMBTU	1,178	1,131
Short [Member] \| Commodity contract - Oil [Member]
Derivative [Line Items]
Non-monetary net notional amount (in barrels) \| bbl	(18)	(25)
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	360	503

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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