CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net income (loss)	$ (88)	$ (1,304)	$ (7,642)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and decommissioning	3,403	3,468	3,234
Bad Debt Expense	154	150	46
Allowance for equity funds used during construction	(133)	(140)	(79)
Deferred income taxes and tax credits, net	1,783	1,097	(2,948)
Reorganization items, net (Note 2)	(73)	1,458	108
Wildfire fund expense	517	413	0
Disallowed capital expenditures	0	17	581
Other	248	249	161
Effect of changes in operating assets and liabilities:
Accounts receivable	(589)	(1,182)	(104)
Wildfire-related insurance receivable	(723)	1,564	35
Inventories	(32)	6	(80)
Accounts payable	117	58	516
Wildfire-related claims	472	(16,525)	(114)
Income taxes receivable/payable	0	0	23
Other current assets and liabilities	244	(1,079)	77
Regulatory assets, liabilities, and balancing accounts, net	(2,266)	(2,451)	(1,417)
Liabilities subject to compromise	0	413	12,222
Contributions to Wildfire fund	(193)	(5,200)	0
Other noncurrent assets and liabilities	(579)	(142)	197
Net cash provided by (used in) operating activities	2,262	(19,130)	4,816
Cash Flows from Investing Activities
Capital expenditures	(7,689)	(7,690)	(6,313)
Proceeds from sale of the SFGO	749	0	0
Proceeds from sales and maturities of nuclear decommissioning trust investments	1,678	1,518	956
Purchases of nuclear decommissioning trust investments	(1,702)	(1,590)	(1,032)
Other	59	14	11
Net cash used in investing activities	(6,905)	(7,748)	(6,378)
Cash Flows from Financing Activities
Proceeds from debtor-in-possession credit facility	0	500	1,850
Repayments of debtor-in-possession credit facility	0	(2,000)	(350)
Debtor-in-possession credit facility debt issuance costs	0	(6)	(113)
Bridge facility financing fees	0	(73)	0
Borrowings under credit facilities	9,730	8,554	0
Repayments under credit facilities	(9,976)	(3,949)	0
Credit facilities financing fees	(9)	(22)	0
Short-term debt financing, net of issuance costs of $1, $2, and $0 at respective dates	300	1,448	0
Short-term debt matured	(1,450)	0	0
Proceeds from issuance of long-term debt, net of premium, discount and issuance costs of $43, $178, and $0 at respective dates	5,474	13,497	0
Repayment of long-term debt	(87)	(764)	0
Proceeds from sale of future revenue from transmission tower license sales, net of fees	370	0	0
Exchanged debt financing fees	0	(103)	0
Common stock issued	0	7,582	85
Equity Units issued	0	1,304	0
Other	(29)	(40)	(8)
Net cash provided by financing activities	4,323	25,928	1,464
Net change in cash, cash equivalents, and restricted cash	(320)	(950)	(98)
Cash, cash equivalents, and restricted cash at January 1	627	1,577	1,675
Cash, cash equivalents, and restricted cash at December 31	307	627	1,577
Less: Restricted cash and restricted cash equivalents	(16)	(143)	(7)
Cash and cash equivalents at December 31	291	484	1,570
Cash paid for:
Interest, net of amounts capitalized	(1,404)	(1,563)	(10)
Income taxes, net	99	0	0
Supplemental disclosures of noncash investing and financing activities
Capital expenditures financed through accounts payable	1,311	515	826
Operating lease liabilities arising from obtaining ROU assets	100	13	2,816
Common stock issued in satisfaction of liabilities	0	8,276	0
Increase to PG&E Corporation common stock and treasury stock in connection with the Share Exchange and Tax Matters Agreement	$ 4,854	$ 0	$ 0