CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025
Statement of Cash Flows [Abstract]
Premium, discount, and issuance costs on proceeds from long-term debt	$ 47	$ 27

The cash inflow from borrowings payable greater than 12 months, net of premium, discount and cash paid to third parties in connection with debt origination

No definition available.

Name:	pcg_LongTermDebtDiscountAndIssuanceCosts
Namespace Prefix:	pcg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration