Derivative Instruments (Balance Sheet Disclosure) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative assets	$ 3,601	$ 1,824
Derivative Asset, Current	1,757	689
Derivative Asset, Noncurrent	1,844	1,135
Derivative liability	6,304	2,976
Derivative Liability, Current	3,380	1,263
Derivative Liability, Noncurrent	2,924	1,713
Current Derivative Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Offset Against Collateral	942	150
Non Current Derivative Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Amount Offset Against Collateral	292	56
Current derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	64	6
Non Current derivative liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	1,338	172
Commodity contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	3,099	1,757
Derivative liability	6,130	2,198
Derivative asset, netting	(17,088)	(6,622)
Derivative liability, netting	(17,256)	(6,594)
Commodity contracts | Level 1 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	5,476	1,896
Derivative Liability, Gross Liability	7,367	2,571
Commodity contracts | Level 2 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	12,424	5,082
Derivative Liability, Gross Liability	12,138	4,990
Commodity contracts | Level 3 | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Gross Asset	2,287	1,401
Derivative Liability, Gross Liability	3,881	1,231
Interest rate contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	502	76
Derivative liability	17	709
Derivative asset, netting	(3)	(30)
Derivative liability, netting	(3)	(30)
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	505	106
Derivative Liability, Gross Liability	20	739
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	0	(9)
Derivative liability	157	69
Derivative asset, netting	0	(17)
Derivative liability, netting	0	(17)
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	8
Derivative Liability, Gross Liability	157	86
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	111
Derivative liability		10
Florida Power & Light Company | Current other assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Current	109	13
Derivative Asset, Noncurrent	2
Florida Power & Light Company | Current other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Current	13	9
Florida Power & Light Company | Noncurrent other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Noncurrent		1
Florida Power & Light Company | Commodity contracts | Fair value measurements made on a recurring basis [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	111	13
Derivative liability	13	10
Derivative asset, netting	(12)	(3)
Derivative liability, netting	(12)	(3)
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	24	3
Derivative Liability, Gross Liability	9	8
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	99	13
Derivative Liability, Gross Liability	$ 16	$ 5