Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 139	$ 296
Restricted cash	299	301
Accounts receivable
Customers (net of allowance for doubtful accounts of $68 and $80 at respective dates)	1,121	1,091
Accrued unbilled revenue	865	766
Regulatory balancing accounts	1,955	1,124
Other	328	312
Regulatory assets	391	448
Inventories
Gas stored underground and fuel oil	189	137
Materials and supplies	308	317
Income taxes receivable	177	574
Other	299	611
Total current assets	6,071	5,977
Property, Plant, and Equipment
Electric	44,297	42,881
Gas	15,285	14,379
Construction work in progress	2,305	1,834
Other	2	2
Total property, plant, and equipment	61,889	59,096
Accumulated depreciation	(18,717)	(17,844)
Net property, plant, and equipment	43,172	41,252
Other Noncurrent Assets
Regulatory assets	5,217	4,913
Nuclear decommissioning trusts	2,399	2,342
Income taxes receivable	93	85
Other	932	1,036
Total other noncurrent assets	8,641	8,376
TOTAL ASSETS	57,884	55,605
Current Liabilities
Short-term borrowings	426	1,174
Long-term debt, classified as current	0	889
Accounts payable
Trade creditors	1,192	1,293
Regulatory balancing accounts	1,223	1,008
Other	425	471
Disputed claims and customer refunds	437	154
Interest payable	149	892
Other	1,874	1,612
Total current liabilities	5,726	7,493
Noncurrent Liabilities
Long-term debt	14,555	12,717
Regulatory liabilities	6,133	5,660
Pension and other postretirement benefits	1,559	1,601
Asset retirement obligations	3,570	3,539
Deferred income taxes	8,032	7,823
Other	2,278	2,178
Total noncurrent liabilities	36,127	33,518
Commitments and Contingencies (Note 10)
Shareholders' Equity
Common stock	10,350	9,550
Reinvested earnings	5,403	4,742
Accumulated other comprehensive income	26	50
Total shareholders' equity	15,779	14,342
Noncontrolling Interest - Preferred Stock of Subsidiary	252	252
Total equity	16,031	14,594
TOTAL LIABILITIES AND EQUITY	57,884	55,605
Pacific Gas And Electric Company [Member]
Current Assets
Cash and cash equivalents	85	65
Restricted cash	299	301
Accounts receivable
Customers (net of allowance for doubtful accounts of $68 and $80 at respective dates)	1,121	1,091
Accrued unbilled revenue	865	766
Regulatory balancing accounts	1,955	1,124
Other	326	313
Regulatory assets	391	448
Inventories
Gas stored underground and fuel oil	189	137
Materials and supplies	308	317
Income taxes receivable	156	563
Other	260	523
Total current assets	5,955	5,648
Property, Plant, and Equipment
Electric	44,297	42,881
Gas	15,285	14,379
Construction work in progress	2,305	1,834
Total property, plant, and equipment	61,887	59,094
Accumulated depreciation	(18,715)	(17,843)
Net property, plant, and equipment	43,172	41,251
Other Noncurrent Assets
Regulatory assets	5,217	4,913
Nuclear decommissioning trusts	2,399	2,342
Income taxes receivable	88	81
Other	834	814
Total other noncurrent assets	8,538	8,150
TOTAL ASSETS	57,665	55,049
Current Liabilities
Short-term borrowings	426	914
Long-term debt, classified as current	0	539
Accounts payable
Trade creditors	1,192	1,293
Regulatory balancing accounts	1,223	1,008
Other	440	432
Disputed claims and customer refunds	437	154
Interest payable	148	887
Other	1,686	1,382
Total current liabilities	5,552	6,609
Noncurrent Liabilities
Long-term debt	14,205	12,717
Regulatory liabilities	6,133	5,660
Pension and other postretirement benefits	1,485	1,530
Asset retirement obligations	3,570	3,539
Deferred income taxes	8,215	8,042
Other	2,240	2,111
Total noncurrent liabilities	35,848	33,599
Commitments and Contingencies (Note 10)
Shareholders' Equity
Preferred stock	258	258
Common stock	1,322	1,322
Additional paid-in capital	6,521	5,821
Reinvested earnings	8,151	7,427
Accumulated other comprehensive income	13	13
Total shareholders' equity	16,265	14,841
TOTAL LIABILITIES AND EQUITY	$ 57,665	$ 55,049