v3.26.1
Income Taxes - BHE - 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
Effect of cross-border tax laws 0 (1)
Energy-related tax credits (564) (560)
Nontaxable or nondeductible items:    
Equity earnings (28) (25)
Noncontrolling interest (12) (9)
Other, net 2 2
Changes in unrecognized tax benefits 1 1
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%
Effect of cross-border tax laws 0.00% (0.10%)
Energy-related tax credits (64.20%) (58.80%)
Nontaxable or nondeductible items:    
Equity earnings (3.20%) (2.60%)
Noncontrolling interest (1.40%) (1.00%)
Other, net 0.20% 0.20%
Changes in unrecognized tax benefits 0.10% 0.10%
Effects of ratemaking (2.30%) (2.60%)
Effective income tax rate (49.00%) (41.80%)
United Kingdom    
Amount    
Other $ (2) $ 15
Percent    
Other (0.20%) 1.60%
Canada    
Amount    
Other $ 1 $ 1
Foreign regulated flow-thru $ (11) $ (10)
Percent    
Other 0.10% 0.10%
Foreign regulated flow-thru (1.20%) (1.10%)
United States    
Amount    
Other $ 0 $ (2)
Percent    
Other 0.00% (0.10%)