XML 133 R89.htm IDEA: XBRL DOCUMENT v3.22.2
Income Taxes - MEC (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]        
Federal statutory income tax rate 21.00% 21.00% 21.00% 21.00%
Income tax credits (13.00%) (13.00%) (28.00%) (27.00%)
State income tax, net of federal income tax impacts (1.00%) 4.00% 0.00% 2.00%
Effects of ratemaking (1.00%) (2.00%) (2.00%) (4.00%)
Other 1.00% 0.00% 0.00% 1.00%
Effective income tax rate 5.00% 12.00% (13.00%) (8.00%)
Years eligible for federal renewable energy production tax credit     10 years  
Production tax credits     $ 734 $ 678
MEC        
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]        
Federal statutory income tax rate 21.00% 21.00% 21.00% 21.00%
Income tax credits (973.00%) (271.00%) (682.00%) (634.00%)
State income tax, net of federal income tax impacts (26.00%) (31.00%) (23.00%) (32.00%)
Effects of ratemaking (11.00%) (15.00%) (9.00%) (21.00%)
Other 0.00% 2.00% 2.00% 0.00%
Effective income tax rate (989.00%) (294.00%) (691.00%) (666.00%)
Years eligible for federal renewable energy production tax credit     10 years  
Production tax credits     $ 388 $ 297
MEC | BHE        
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]        
Related party transaction, cash received (paid) for income taxes     $ 541 $ 558