CONSOLIDATED STATEMENTS OF CASH FLOWS, UTILITY (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Financing Activities
Issuance costs for short-term debt	$ 0	$ 1	$ 2
Premium, discount, and issuance costs on proceeds from long-term debt	29	33	178
Performance based incentives earned	38	0	0
SB 901 Securitization
Cash Flows from Financing Activities
Financing fees	36	0	0
Series 2022-A Recovery Bonds
Cash Flows from Financing Activities
Financing fees	11	10	0
Pacific Gas & Electric Co (Utility)
Cash Flows from Financing Activities
Issuance costs for short-term debt	0	1	2
Premium, discount, and issuance costs on proceeds from long-term debt	29	33	88
Performance based incentives earned	38	0	0
Pacific Gas & Electric Co (Utility) | SB 901 Securitization
Cash Flows from Financing Activities
Financing fees	36	0	0
Pacific Gas & Electric Co (Utility) | Series 2022-A Recovery Bonds
Cash Flows from Financing Activities
Financing fees	$ 11	$ 10	$ 0