v3.26.1
Revenue from Contracts with Customers - BHE - Real Estate Services (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]    
Operating revenue $ 6,672 $ 6,366
Real estate    
Disaggregation of Revenue [Line Items]    
Operating revenue 862 860
HomeServices | Real estate    
Disaggregation of Revenue [Line Items]    
Total Customer Revenue 791 791
Other revenue 71 69
Operating revenue 862 860
HomeServices | Brokerage    
Disaggregation of Revenue [Line Items]    
Total Customer Revenue 778 781
HomeServices | Franchise    
Disaggregation of Revenue [Line Items]    
Total Customer Revenue $ 13 $ 10