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Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure - Pacificorp (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Dec. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]        
Cash and cash equivalents $ 1,815 $ 1,040    
Restricted cash and cash equivalents 237 212    
Restricted Cash and Cash Equivalents, Noncurrent 18 16    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 2,070 1,268 $ 1,506 $ 883
PacifiCorp [Member]        
Condensed Cash Flow Statements, Captions [Line Items]        
Cash and cash equivalents 711 30    
Restricted cash and cash equivalents 5 4    
Restricted Cash and Cash Equivalents, Noncurrent 3 2    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents $ 719 $ 36 $ 554 $ 92