Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash Flows from Operating Activities
Net income	$ 440	$ 501
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and decommissioning	1,282	1,095
Allowance for equity funds used during construction	(53)	(46)
Deferred income taxes and tax credits, net	219	51
Disallowed capital expenditures	128	0
Other	149	139
Effect of changes in operating assets and liabilities:
Accounts receivable	(241)	(30)
Inventories	20	(7)
Accounts payable	78	(101)
Income taxes receivable/payable	6	(39)
Other current assets and liabilities	77	94
Regulatory assets, liabilities, and balancing accounts, net	(62)	(311)
Other noncurrent assets and liabilities	(184)	(66)
Net cash provided by operating activities	1,859	1,280
Cash Flows from Investing Activities
Capital expenditures	(2,410)	(2,320)
Decrease in restricted cash	11	2
Proceeds from sales and maturities of nuclear decommissioning trust investments	779	877
Purchases of nuclear decommissioning trust investments	(879)	(873)
Other	13	21
Net cash used in investing activities	(2,486)	(2,293)
Cash Flows from Financing Activities
Repayments under revolving credit facilities	0	(260)
Net issuances of commercial paper, net of discount of $2 and $1 at respective dates	681	237
Proceeds from issuance of short-term debt, net of issuance costs	0	300
Short-term debt matured	(300)	0
Proceeds from issuance of long-term debt, net of premium, discount, and issuance costs of $14, at respective dates, for PG&E Corporation and $14 and $11, at respective dates, for the Utility	486	1,236
Repayments of long-term debt	0	(889)
Common stock issued	252	589
Common stock dividends paid	(424)	(408)
Other	30	44
Net cash provided by financing activities	725	849
Net change in cash and cash equivalents	98	(164)
Cash and cash equivalents at January 1	151	296
Cash and cash equivalents at June 30	249	132
Cash received (paid) for:
Interest, net of amounts capitalized	(334)	(318)
Income taxes, net	0	(1)
Supplemental disclosures of noncash investing and financing activities
Common stock dividends declared but not yet paid	219	215
Capital expenditures financed through accounts payable	177	224
Noncash common stock issuances	10	10
Terminated capital leases	0	68
Pacific Gas And Electric Company [Member]
Cash Flows from Operating Activities
Net income	410	478
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and decommissioning	1,282	1,094
Allowance for equity funds used during construction	(53)	(46)
Deferred income taxes and tax credits, net	219	18
Disallowed capital expenditures	128	0
Other	119	108
Effect of changes in operating assets and liabilities:
Accounts receivable	(242)	(31)
Inventories	20	(7)
Accounts payable	134	(72)
Income taxes receivable/payable	8	(35)
Other current assets and liabilities	67	141
Regulatory assets, liabilities, and balancing accounts, net	(62)	(311)
Other noncurrent assets and liabilities	(170)	(76)
Net cash provided by operating activities	1,860	1,261
Cash Flows from Investing Activities
Capital expenditures	(2,410)	(2,320)
Decrease in restricted cash	11	2
Proceeds from sales and maturities of nuclear decommissioning trust investments	779	877
Purchases of nuclear decommissioning trust investments	(879)	(873)
Other	13	17
Net cash used in investing activities	(2,486)	(2,297)
Cash Flows from Financing Activities
Net issuances of commercial paper, net of discount of $2 and $1 at respective dates	676	125
Proceeds from issuance of short-term debt, net of issuance costs	0	300
Short-term debt matured	(300)	0
Proceeds from issuance of long-term debt, net of premium, discount, and issuance costs of $14, at respective dates, for PG&E Corporation and $14 and $11, at respective dates, for the Utility	486	889
Repayments of long-term debt	0	(539)
Preferred stock dividends paid	(7)	(7)
Common stock dividends paid	(358)	(358)
Equity contribution from PG&E Corporation	185	580
Other	37	51
Net cash provided by financing activities	719	1,041
Net change in cash and cash equivalents	93	5
Cash and cash equivalents at January 1	55	65
Cash and cash equivalents at June 30	148	70
Cash received (paid) for:
Interest, net of amounts capitalized	(330)	(307)
Income taxes, net	0	(1)
Supplemental disclosures of noncash investing and financing activities
Capital expenditures financed through accounts payable	177	224
Terminated capital leases	$ 0	$ 68