v3.20.4
Summary of Significant Accounting and Reporting Policies (Regulatory Assets and Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Current:    
Early retirement of generation facilities $ 36 $ 31
Acquisition of purchased power agreements 161 165
Other 180 139
Total 377 335
Noncurrent:    
Early retirement of generation facilities 1,438 1,004
Acquisition of purchased power agreements 473 634
Other 1,801 1,649
Total 3,712 3,287
Current:    
Deferred clause revenues 215 309
Other 30 11
Total 245 320
Noncurrent:    
Asset retirement obligation regulatory expense difference 3,583 2,826
Accrued asset removal costs 1,206 1,346
Deferred taxes 4,698 4,862
Other 1,248 902
Total 10,735 9,936
FPL[Member]    
Current:    
Early retirement of generation facilities 32 27
Acquisition of purchased power agreements 161 165
Other 42 35
Total 235 227
Noncurrent:    
Early retirement of generation facilities 932 956
Acquisition of purchased power agreements 473 634
Other 991 959
Total 2,396 2,549
Current:    
Deferred clause revenues 197 284
Other 9 0
Total 206 284
Noncurrent:    
Asset retirement obligation regulatory expense difference 3,583 2,828
Accrued asset removal costs 1,015 1,157
Deferred taxes 4,237 4,397
Other 1,217 914
Total $ 10,052 $ 9,296