Summary of Significant Accounting and Reporting Policies (Regulatory Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Current:
Early retirement of generation facilities and transmission assets	$ 160	$ 145
Deferred clause and franchise expenses(b)	1,014	919
Storm restoration costs(c)	35	911
Other	251	190
Total	1,460	2,165
Noncurrent:
Early retirement of generation facilities and transmission assets	2,166	2,026
Deferred clause expenses(b)	6	1,227
Storm restoration costs(c)	0	326
Accrued asset removal costs	1,021	532
Other	1,608	1,881
Total	4,801	5,992
Current:
Deferred clause revenues	330	339
Other	10	11
Total	340	350
Noncurrent:
Asset retirement obligation regulatory expense difference	4,066	3,323
Accrued asset removal costs	701	658
Deferred taxes	3,890	4,233
Other	1,392	1,412
Total	10,049	9,626
FPL [Member]
Current:
Early retirement of generation facilities and transmission assets	160	145
Deferred clause and franchise expenses(b)	1,014	919
Storm restoration costs(c)	35	911
Other	222	180
Total	1,431	2,155
Noncurrent:
Early retirement of generation facilities and transmission assets	2,166	2,026
Deferred clause expenses(b)	6	1,227
Storm restoration costs(c)	0	326
Accrued asset removal costs	1,021	532
Other	1,150	1,373
Total	4,343	5,484
Current:
Deferred clause revenues	330	339
Other	5	10
Total	335	349
Noncurrent:
Asset retirement obligation regulatory expense difference	4,066	3,323
Accrued asset removal costs	660	623
Deferred taxes	3,786	4,129
Other	1,381	1,383
Total	$ 9,893	$ 9,458