Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities
Net income	$ 711	$ 750
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and decommissioning	2,090	1,935
Allowance for equity funds used during construction	(84)	(80)
Deferred income taxes and tax credits, net	644	260
Disallowed capital expenditures	517	270
Other	293	247
Effect of changes in operating assets and liabilities:
Accounts receivable	(546)	(322)
Inventories	(38)	5
Accounts payable	189	95
Income taxes receivable/payable	(63)	42
Other current assets and liabilities	254	(87)
Regulatory assets, liabilities, and balancing accounts, net	(634)	78
Other noncurrent assets and liabilities	(85)	(251)
Net cash provided by operating activities	3,248	2,942
Cash Flows from Investing Activities
Capital expenditures	(4,128)	(3,662)
Decrease in restricted cash	66	11
Proceeds from sales and maturities of nuclear decommissioning trust investments	1,019	1,023
Purchases of nuclear decommissioning trust investments	(1,050)	(1,124)
Other	10	18
Net cash used in investing activities	(4,083)	(3,734)
Cash Flows from Financing Activities
Net issuances (repayments) of commercial paper, net of discount of $5 and $2 at respective dates	(128)	545
Short-term debt financing	250	0
Short-term debt matured	0	(300)
Proceeds from issuance of long-term debt, net of discount and issuance costs of $6 and $14 at respective dates	594	486
Common stock issued	727	689
Common stock dividends paid	(678)	(638)
Other	18	13
Net cash provided by financing activities	783	795
Net change in cash and cash equivalents	(52)	3
Cash and cash equivalents at January 1	123	151
Cash and cash equivalents at September 30	71	154
Supplemental disclosures of cash flow information
Interest, net of amounts capitalized	(611)	(569)
Income taxes, net	154	0
Supplemental disclosures of noncash investing and financing activities
Common stock dividends declared but not yet paid	248	223
Capital expenditures financed through accounts payable	325	245
Noncash common stock issuances	15	15
Pacific Gas And Electric Company [Member]
Cash Flows from Operating Activities
Net income	706	715
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization, and decommissioning	2,090	1,935
Allowance for equity funds used during construction	(84)	(80)
Deferred income taxes and tax credits, net	648	245
Disallowed capital expenditures	517	270
Other	234	200
Effect of changes in operating assets and liabilities:
Accounts receivable	(546)	(321)
Inventories	(38)	5
Accounts payable	194	148
Income taxes receivable/payable	(64)	14
Other current assets and liabilities	258	(45)
Regulatory assets, liabilities, and balancing accounts, net	(634)	78
Other noncurrent assets and liabilities	(75)	(232)
Net cash provided by operating activities	3,206	2,932
Cash Flows from Investing Activities
Capital expenditures	(4,128)	(3,662)
Decrease in restricted cash	66	11
Proceeds from sales and maturities of nuclear decommissioning trust investments	1,019	1,023
Purchases of nuclear decommissioning trust investments	(1,050)	(1,124)
Other	10	18
Net cash used in investing activities	(4,083)	(3,734)
Cash Flows from Financing Activities
Net issuances (repayments) of commercial paper, net of discount of $5 and $2 at respective dates	(293)	545
Short-term debt financing	250	0
Short-term debt matured	0	(300)
Proceeds from issuance of long-term debt, net of discount and issuance costs of $6 and $14 at respective dates	594	486
Preferred stock dividends paid	(10)	(10)
Common stock dividends paid	(423)	(537)
Equity contribution from PG&E Corporation	740	605
Other	28	20
Net cash provided by financing activities	886	809
Net change in cash and cash equivalents	9	7
Cash and cash equivalents at January 1	59	55
Cash and cash equivalents at September 30	68	62
Supplemental disclosures of cash flow information
Interest, net of amounts capitalized	(602)	(561)
Income taxes, net	151	0
Supplemental disclosures of noncash investing and financing activities
Common stock dividends declared but not yet paid	244	0
Capital expenditures financed through accounts payable	$ 325	$ 245