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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS, UTILITY (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Cash Flows from Financing Activities    
Premium, discount, and issuance costs on proceeds from long-term debt $ 22 $ 18
Pacific Gas & Electric Co (Utility)    
Cash Flows from Financing Activities    
Premium, discount, and issuance costs on proceeds from long-term debt $ 21 $ 18