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.

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Nominal number of units used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Nominal energy measure used to calculate payments on a derivative instrument.

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Nominal volume used to calculate payments on a derivative instrument.

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Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://asc.fasb.org//1943274/2147480434/815-10-50-1A

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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, 2023 USD ($) MWh MMBTU bbl	Dec. 31, 2022 USD ($) MWh MMBTU bbl	Oct. 31, 2023 USD ($)
Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount	$ 20.0	$ 19.7
Interest Rate Swap [Member] \| Subsequent Event
Derivative [Line Items]
Notional amount			$ 4.7
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	(127)	(104)
Short [Member] \| Commodity contract - Natural gas [Member]
Derivative [Line Items]
Non-monetary net notional amount (in MMBtu) \| MMBTU	1,297	1,307
Short [Member] \| Commodity contract - Oil [Member]
Derivative [Line Items]
Non-monetary net notional amount (in barrels) \| bbl	(43)	(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	793	258