Derivative Instruments (Balance Sheet Disclosure) (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Derivatives, Fair Value [Line Items]
Derivative assets	$ 2,490	$ 2,653
Derivative Asset, Current	856	879
Derivative Asset, Noncurrent	$ 1,634	$ 1,774
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Other assets, current	Other assets, current
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other	Other
Derivative liability	$ 3,555	$ 3,081
Derivative Liability, Current	1,262	1,073
Derivative Liability, Noncurrent	$ 2,293	$ 2,008
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Current Derivative Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Offset Against Collateral	$ 54	$ 154
Non Current Derivative Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Offset Against Collateral	48	321
Current derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	51
Non Current derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	38
Commodity contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	2,330	2,125
Derivative liability	2,648	2,742
Derivative asset, netting	(4,265)	(4,032)
Derivative liability, netting	(4,252)	(3,557)
Commodity contracts | Level 1 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	1,928	1,778
Derivative Liability, Gross Liability	2,310	1,983
Commodity contracts | Level 2 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	3,024	3,040
Derivative Liability, Gross Liability	3,504	3,364
Commodity contracts | Level 3 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	1,643	1,339
Derivative Liability, Gross Liability	1,086	952
Interest rate contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	156	533
Derivative liability	826	240
Derivative asset, netting	(46)	(44)
Derivative liability, netting	(46)	(44)
Interest rate contracts | Level 1 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	0	0
Derivative Liability, Gross Liability	0	0
Interest rate contracts | Level 2 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	202	577
Derivative Liability, Gross Liability	872	284
Interest rate contracts | Level 3 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	0	0
Derivative Liability, Gross Liability	0	0
Foreign currency contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	4	(5)
Derivative liability	81	99
Derivative asset, netting	(5)	(5)
Derivative liability, netting	(5)	(5)
Foreign currency contracts | Level 1 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	0	0
Derivative Liability, Gross Liability	0	0
Foreign currency contracts | Level 2 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	9	0
Derivative Liability, Gross Liability	86	104
Foreign currency contracts | Level 3 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	0	0
Derivative Liability, Gross Liability	0	0
Florida Power & Light Company
Derivatives, Fair Value [Line Items]
Derivative assets	18	40
Derivative Asset, Current	11	31
Derivative Asset, Noncurrent	7	9
Derivative liability	62	7
Derivative Liability, Current	61	3
Derivative Liability, Noncurrent	1	4
Florida Power & Light Company | Commodity contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	18	40
Derivative liability	62	7
Derivative asset, netting	(12)	(16)
Derivative liability, netting	(12)	(11)
Florida Power & Light Company | Commodity contracts | Level 1 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	0	0
Derivative Liability, Gross Liability	0	0
Florida Power & Light Company | Commodity contracts | Level 2 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	2	9
Derivative Liability, Gross Liability	10	5
Florida Power & Light Company | Commodity contracts | Level 3 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	28	47
Derivative Liability, Gross Liability	$ 64	$ 13