v3.26.1
Income Taxes - LLC - Reconciliation of Effective Income Tax Rate (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Amount    
U.S. federal statutory income tax rate $ 184 $ 200
State and local income taxes, net of federal income tax effect 18 14
Energy-related tax credits (564) (560)
Effects of ratemaking (19) (25)
Total $ (430) $ (399)
Percent    
U.S. federal statutory income tax rate 21.00% 21.00%
State and local income taxes, net of federal income tax 2.10% 1.50%
Energy-related tax credits (64.20%) (58.80%)
Effects of ratemaking (2.30%) (2.60%)
Effective income tax rate (49.00%) (41.80%)
MidAmerican Funding, LLC    
Amount    
U.S. federal statutory income tax rate $ 6 $ (2)
State and local income taxes, net of federal income tax effect (1) 0
Energy-related tax credits (222) (236)
Effects of ratemaking 0 1
Other (1) 1
Total $ (218) $ (236)
Percent    
U.S. federal statutory income tax rate 21.00% 21.00%
State and local income taxes, net of federal income tax (3.70%) 0.00%
Energy-related tax credits (822.20%) 2950.00%
Effects of ratemaking 0.00% (12.50%)
Other (2.50%) (8.50%)
Effective income tax rate (807.40%) 2950.00%