BANKRUPTCY FILING (Schedule of Liabilities Subject to Compromise) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jul. 24, 2020	Dec. 31, 2019
Liabilities Subject to Compromise, Period Increase (Decrease) [Roll Forward]
Financing debt, beginning balance	$ 23,116.0
Wildfire-related claims, beginning balance	25,548.0
Trade creditors, beginning balance	1,188.0
Non-qualified benefit plan, beginning balance	157.0
2001 bankruptcy disputed claims, beginning balance	234.0
Customer deposits & advances, beginning balance	71.0
Other, beginning balance	232.0
Liabilities Subject to Compromise, beginning balance	50,546.0
Liabilities Subject to Compromise, ending balance	0.0
Financing debt, ending balance	0.0
Wildfire-related claims, ending balance	0.0
Trade creditors, ending balance	0.0
Non-qualified benefit plan, ending balance	0.0
2001 bankruptcy disputed claims, ending balance	0.0
Customer deposits & advances, ending balance	0.0
Other, ending balance	0.0
Accounts payable - other	631.0		$ 566.0
Disputed claims and customer refunds	238.0		0.0
Interest payable	1,363.0		4.0
Debt financial instrument	34,920.0
Short-term borrowings	300.0		0.0
Long-term debt, classified as current	450.0		0.0
Other current liabilities	3,605.0		1,254.0
Other non-current liabilities	4,423.0		2,573.0
Pension and other post-retirement benefits	1,941.0		1,884.0
Accounts payable - trade creditors	3,399.0		1,954.0
Wildfire-related Claims	26,143.0		0.0
Change in Estimated Allowed Claim
Liabilities Subject to Compromise, Period Increase (Decrease) [Roll Forward]
Financing debt, change	351.0
Wildfire-related claims, change	18.0
Trade creditors, change	6.0
Non-qualified benefit plan, change	0.0
2011 bankruptcy disputed claims, change	4.0
Customer deposits & advances, change	12.0
Other, change	59.0
Liabilities Subject to Compromise, change	450.0
Cash Payment
Liabilities Subject to Compromise, Period Increase (Decrease) [Roll Forward]
Financing debt, change	0.0
Wildfire-related claims, change	(23.0)
Trade creditors, change	(14.0)
Non-qualified benefit plan, change	0.0
2011 bankruptcy disputed claims, change	0.0
Customer deposits & advances, change	0.0
Other, change	0.0
Liabilities Subject to Compromise, change	(37.0)
Reclassified
Liabilities Subject to Compromise, Period Increase (Decrease) [Roll Forward]
Financing debt, change	(23,467.0)
Wildfire-related claims, change	(25,543.0)
Trade creditors, change	(1,180.0)
Non-qualified benefit plan, change	(157.0)
2011 bankruptcy disputed claims, change	(238.0)
Customer deposits & advances, change	(83.0)
Other, change	(291.0)
Liabilities Subject to Compromise, change	(50,959.0)
Accounts payable - other	8.6
Disputed claims and customer refunds	237.6
Interest payable	1,347.4
Debt financial instrument	21,425.7
Short-term borrowings	300.0
Long-term debt, classified as current	450.0
Other current liabilities	301.0
Other non-current liabilities	97.9
Pension and other post-retirement benefits	121.3
Accounts payable - trade creditors	1,126.9
Wildfire-related Claims	25,542.7
Pacific Gas & Electric Co
Liabilities Subject to Compromise, Period Increase (Decrease) [Roll Forward]
Financing debt, beginning balance	22,450.0
Wildfire-related claims, beginning balance	25,548.0
Trade creditors, beginning balance	1,183.0
Non-qualified benefit plan, beginning balance	20.0
2001 bankruptcy disputed claims, beginning balance	234.0
Customer deposits & advances, beginning balance	71.0
Other, beginning balance	230.0
Liabilities Subject to Compromise, beginning balance	49,736.0
Liabilities Subject to Compromise, ending balance	0.0
Financing debt, ending balance	0.0
Wildfire-related claims, ending balance	0.0
Trade creditors, ending balance	0.0
Non-qualified benefit plan, ending balance	0.0
2001 bankruptcy disputed claims, ending balance	0.0
Customer deposits & advances, ending balance	0.0
Other, ending balance	0.0
Accounts payable - other	717.0		675.0
Disputed claims and customer refunds	238.0		0.0
Interest payable	1,331.0		4.0
Debt financial instrument	30,263.0
Long-term debt, classified as current	100.0		0.0
Other current liabilities	1,579.0		1,263.0
Other non-current liabilities	4,455.0		2,626.0
Pension and other post-retirement benefits	1,836.0		1,884.0
Accounts payable - trade creditors	3,382.0		1,949.0
Wildfire-related Claims	26,143.0		$ 0.0
Pacific Gas & Electric Co | Subsequent event
Liabilities Subject to Compromise, Period Increase (Decrease) [Roll Forward]
Accounts payable, trade		$ 290.0
PG&E Corporation
Liabilities Subject to Compromise, Period Increase (Decrease) [Roll Forward]
Financing debt, beginning balance	666.0
Wildfire-related claims, beginning balance	0.0
Trade creditors, beginning balance	5.0
Non-qualified benefit plan, beginning balance	137.0
2001 bankruptcy disputed claims, beginning balance	0.0
Customer deposits & advances, beginning balance	0.0
Other, beginning balance	2.0
Liabilities Subject to Compromise, beginning balance	810.0
Liabilities Subject to Compromise, ending balance	0.0
Financing debt, ending balance	0.0
Wildfire-related claims, ending balance	0.0
Trade creditors, ending balance	0.0
Non-qualified benefit plan, ending balance	0.0
2001 bankruptcy disputed claims, ending balance	0.0
Customer deposits & advances, ending balance	0.0
Other, ending balance	$ 0.0
PG&E Corporation | Subsequent event
Liabilities Subject to Compromise, Period Increase (Decrease) [Roll Forward]
Accounts payable, trade		$ 0.4