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BHE Shareholders' Equity (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jun. 30, 2017
Class of Stock [Line Items]          
BHE junior subordinated debentures   $ 100 $ 100    
Common stock, value, repurchased   293 $ 107 $ 19  
Berkshire Hathaway Energy [Member] | BHE Junior Subordinated Debentures, due June 2057 [Member]          
Class of Stock [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage         5.00%
Conversion of Stock, Shares Converted 181,819        
BHE [Member] | BHE Junior Subordinated Debentures, due June 2057 [Member]          
Class of Stock [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage     5.00%    
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% 5.00%