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BHE Shareholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended 12 Months Ended
Oct. 29, 2020
Jun. 30, 2017
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Class of Stock [Line Items]          
BHE junior subordinated debentures     $ 100 $ 100  
Common stock, value, repurchased     126 293 $ 107
Preferred Stock, Value, Issued     $ 3,750 0  
Preferred Stock, Shares Issued     4,000,000    
Preferred Stock, Par or Stated Value Per Share     $ 0.01    
Natural Gas Transmission and Storage Business Acquisition [Member]          
Class of Stock [Line Items]          
Preferred Stock, Dividend Rate, Percentage 4.00%        
Preferred Stock, Value, Issued $ 3,750        
Preferred Stock, Shares Issued 3,750,000        
Preferred Stock, Par or Stated Value Per Share $ 1,000        
Berkshire Hathaway Energy [Member] | BHE Junior Subordinated Debentures, due June 2057 [Member]          
Class of Stock [Line Items]          
Conversion of Stock, Shares Converted   181,819      
Junior Subordinated Debt [Member] | Berkshire Hathaway Energy [Member]          
Class of Stock [Line Items]          
BHE junior subordinated debentures     $ 100 100  
Junior Subordinated Debt [Member] | Berkshire Hathaway Energy [Member] | BHE Junior Subordinated Debentures, due June 2057 [Member]          
Class of Stock [Line Items]          
BHE junior subordinated debentures   $ 100   $ 100  
Debt Instrument, Interest Rate, Stated Percentage   5.00%