Non-Derivative Fair Value Measurements (Assets and Liabilities Measured on a Recurring Basis) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring [Line Items]
Restricted cash	$ 1,632	$ 677
Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	1,751	176
Special use funds:
Equity securities	4,425	5,511
U.S. Government and municipal bonds	767	845
Corporate debt securities	775	962
Asset-backed securities	626	663
Other debt securities	27	35
Other investments:
Equity Securities	35	72
Debt securities	427	285
Level 1 | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	1,751	176
Special use funds:
Equity securities	2,056	2,538
U.S. Government and municipal bonds	699	770
Corporate debt securities	1	7
Asset-backed securities	0	0
Other debt securities	1	2
Other investments:
Equity Securities	34	70
Debt securities	123	111
Level 2 | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	0	0
Special use funds:
Equity securities	2,369	2,973
U.S. Government and municipal bonds	68	75
Corporate debt securities	774	955
Asset-backed securities	626	663
Other debt securities	26	33
Other investments:
Equity Securities	1	2
Debt securities	184	162
Level 3 | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	0	0
Special use funds:
Equity securities	0	0
U.S. Government and municipal bonds	0	0
Corporate debt securities	0	0
Asset-backed securities	0	0
Other debt securities	0	0
Other investments:
Equity Securities	0	0
Debt securities	120	12
Current other assets | Level 1 | Fair value measurements made on a recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring [Line Items]
Restricted cash	55	56
Florida Power & Light Company
Fair Value, Assets and Liabilities Measured on Recurring [Line Items]
Restricted cash	39	53
Florida Power & Light Company | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	56	58
Special use funds:
Equity securities	2,899	3,552
U.S. Government and municipal bonds	601	668
Corporate debt securities	580	726
Asset-backed securities	491	515
Other debt securities	18	25
Other investments:
Equity Securities	13	13
Florida Power & Light Company | Level 1 | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	56	58
Special use funds:
Equity securities	745	862
U.S. Government and municipal bonds	565	624
Corporate debt securities	0	6
Asset-backed securities	0	0
Other debt securities	1	2
Other investments:
Equity Securities	13	13
Florida Power & Light Company | Level 2 | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	0	0
Special use funds:
Equity securities	2,154	2,690
U.S. Government and municipal bonds	36	44
Corporate debt securities	580	720
Asset-backed securities	491	515
Other debt securities	17	23
Other investments:
Equity Securities	0	0
Florida Power & Light Company | Level 3 | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	0	0
Special use funds:
Equity securities	0	0
U.S. Government and municipal bonds	0	0
Corporate debt securities	0	0
Asset-backed securities	0	0
Other debt securities	0	0
Other investments:
Equity Securities	0	0
Florida Power & Light Company | Current other assets | Level 1 | Fair value measurements made on a recurring basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring [Line Items]
Restricted cash	38	$ 53
NextEra Energy Resources
Other investments:
Contingent consideration liabilities	$ 240