Derivative Instruments (Net Notional Volumes and Additional Disclosures) (Details) bbl in Millions, MWh in Millions, MMBTU in Millions, $ in Billions	6 Months Ended	12 Months Ended
Jun. 30, 2023 USD ($) MWh MMBTU bbl	Dec. 31, 2022 USD ($) MWh MMBTU bbl
Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount \| $	$ 20.4	$ 19.7
Foreign currency contracts
Derivative [Line Items]
Notional amount \| $	$ 0.5	$ 1.0
Short [Member] \| Commodity contract - Power [Member]
Derivative [Line Items]
Non-monetary net notional amount (in MWh) \| MWh	(124)	(104)
Short [Member] \| Commodity contract - Natural gas [Member]
Derivative [Line Items]
Non-monetary net notional amount (in MMBtu) \| MMBTU	999	1,307
Short [Member] \| Commodity contract - Oil [Member]
Derivative [Line Items]
Non-monetary net notional amount (in barrels) \| bbl	(45)	(38)
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	867	258

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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Nominal volume used to calculate payments on a derivative instrument.

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