XML 283 R232.htm IDEA: XBRL DOCUMENT v3.25.0.1
Income Taxes - MEC - Reconciliation of Effective Income Tax Rate (Details)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Schedule of Effective Income Tax Rate Reconciliation [Line Items]      
Federal statutory income tax rate 21.00% 21.00% 21.00%
Income tax credits (59.00%) (85.00%) (124.00%)
State income tax, net of federal income tax benefit (1.00%) (6.00%) (6.00%)
Effects of ratemaking (6.00%) (11.00%) (16.00%)
Other, net 0.00% 0.00% 2.00%
Effective income tax rate (50.00%) (87.00%) (136.00%)
MEC      
Schedule of Effective Income Tax Rate Reconciliation [Line Items]      
Federal statutory income tax rate 21.00% 21.00% 21.00%
Income tax credits (495.00%) (236.00%) (372.00%)
State income tax, net of federal income tax benefit (16.00%) (12.00%) (32.00%)
Effects of ratemaking (20.00%) (12.00%) (23.00%)
Other, net (2.00%) (1.00%) 3.00%
Effective income tax rate (512.00%) (240.00%) (403.00%)