Derivative Instruments (Balance Sheet Disclosure) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Derivative assets	$ 3,719	$ 3,525
Derivative Asset, Current	1,760	1,590
Derivative Asset, Noncurrent	$ 1,959	$ 1,935
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	$ 3,059	$ 5,011
Derivative Liability, Current	1,037	2,102
Derivative Liability, Noncurrent	$ 2,022	$ 2,909
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	$ 115	$ 299
Non Current Derivative Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Offset Against Collateral	82	262
Current derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	710	328
Non Current derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	330	1,213
Commodity contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	3,183	2,995
Derivative liability	2,825	4,743
Derivative asset, netting	(8,102)	(12,030)
Derivative liability, netting	(8,945)	(13,010)
Commodity contracts | Level 1 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	2,832	5,372
Derivative Liability, Gross Liability	4,452	7,185
Commodity contracts | Level 2 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	6,283	7,559
Derivative Liability, Gross Liability	5,903	7,620
Commodity contracts | Level 3 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	2,170	2,094
Derivative Liability, Gross Liability	1,415	2,948
Interest rate contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	537	534
Derivative liability	179	142
Derivative asset, netting	138	(49)
Derivative liability, netting		(49)
Derivative Liability, Fair Value, Gross Asset And Right To Reclaim Cash, Offset, Net Of Adjustments	138
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	399	583
Derivative Liability, Gross Liability	41	191
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	(1)	(4)
Derivative liability	55	126
Derivative asset, netting	(1)	(4)
Derivative liability, netting	(1)	(4)
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	0	0
Derivative Liability, Gross Liability	56	130
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	33	29
Derivative Asset, Current	23	19
Derivative Asset, Noncurrent	10	10
Derivative liability	28	13
Derivative Liability, Current	23	12
Derivative Liability, Noncurrent	5	1
Florida Power & Light Company | Commodity contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	33	29
Derivative liability	28	13
Derivative asset, netting	4	(7)
Derivative liability, netting		(7)
Derivative Liability, Fair Value, Gross Asset And Right To Reclaim Cash, Offset, Net Of Adjustments	4
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, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement, Net Of Adjustments	(2)
Derivative Asset, Gross Asset		11
Derivative Liability, Gross Liability	6	4
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	31	25
Derivative Liability, Gross Liability	$ 18	$ 16