Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 449	$ 177
Accounts receivable
Customers (net of allowance for doubtful accounts of $64 and $58 at respective dates)	1,243	1,252
Accrued unbilled revenue	946	1,098
Regulatory balancing accounts	1,222	1,500
Other	861	801
Regulatory assets	615	423
Inventories
Gas stored underground and fuel oil	115	117
Materials and supplies	366	346
Income taxes receivable	0	160
Other	464	290
Total current assets	6,281	6,164
Property, Plant, and Equipment
Electric	55,133	52,556
Gas	19,641	17,853
Construction work in progress	2,471	2,184
Other	3	2
Total property, plant, and equipment	77,248	72,595
Accumulated depreciation	(23,459)	(22,014)
Net property, plant, and equipment	53,789	50,581
Other Noncurrent Assets
Regulatory Assets Noncurrent	3,793	7,951
Nuclear decommissioning trusts	2,863	2,606
Income taxes receivable	65	70
Other	1,221	1,226
Total other noncurrent assets	7,942	11,853
TOTAL ASSETS	68,012	68,598
Current Liabilities
Short-term borrowings	931	1,516
Long-term debt, classified as current	445	700
Accounts payable
Trade creditors	1,646	1,495
Regulatory balancing accounts	1,120	645
Other	517	433
Disputed claims and customer refunds	243	236
Interest payable	217	216
Other	2,010	2,323
Total current liabilities	7,129	7,564
Noncurrent Liabilities
Long-term debt	17,753	16,220
Regulatory liabilities	8,679	6,805
Pension and other postretirement benefits	2,128	2,641
Asset retirement obligations	4,899	4,684
Deferred income taxes	5,822	10,213
Other	2,130	2,279
Total noncurrent liabilities	41,411	42,842
Commitments and Contingencies (Note 13)
Shareholders' Equity
Common stock	12,632	12,198
Reinvested earnings	6,596	5,751
Accumulated other comprehensive(loss)income	(8)	(9)
Total shareholders' equity	19,220	17,940
Noncontrolling Interest - Preferred Stock of Subsidiary	252	252
Total equity	19,472	18,192
TOTAL LIABILITIES AND EQUITY	68,012	68,598
Pacific Gas And Electric Company [Member]
Current Assets
Cash and cash equivalents	447	71
Accounts receivable
Customers (net of allowance for doubtful accounts of $64 and $58 at respective dates)	1,243	1,252
Accrued unbilled revenue	946	1,098
Regulatory balancing accounts	1,222	1,500
Other	862	801
Regulatory assets	615	423
Inventories
Gas stored underground and fuel oil	115	117
Materials and supplies	366	346
Income taxes receivable	0	159
Other	465	289
Total current assets	6,281	6,056
Property, Plant, and Equipment
Electric	55,133	52,556
Gas	19,641	17,853
Construction work in progress	2,471	2,184
Total property, plant, and equipment	77,245	72,593
Accumulated depreciation	(23,456)	(22,012)
Net property, plant, and equipment	53,789	50,581
Other Noncurrent Assets
Regulatory Assets Noncurrent	3,793	7,951
Nuclear decommissioning trusts	2,863	2,606
Income taxes receivable	64	70
Other	1,094	1,110
Total other noncurrent assets	7,814	11,737
TOTAL ASSETS	67,884	68,374
Current Liabilities
Short-term borrowings	799	1,516
Long-term debt, classified as current	445	700
Accounts payable
Trade creditors	1,644	1,494
Regulatory balancing accounts	1,120	645
Other	538	453
Disputed claims and customer refunds	243	236
Interest payable	214	214
Other	2,018	2,072
Total current liabilities	7,021	7,330
Noncurrent Liabilities
Long-term debt	17,403	15,872
Regulatory liabilities	8,679	6,805
Pension and other postretirement benefits	2,026	2,548
Asset retirement obligations	4,899	4,684
Deferred income taxes	5,963	10,510
Other	2,146	2,230
Total noncurrent liabilities	41,116	42,649
Commitments and Contingencies (Note 13)
Shareholders' Equity
Preferred stock	258	258
Common stock	1,322	1,322
Additional paid-in capital	8,505	8,050
Reinvested earnings	9,656	8,763
Accumulated other comprehensive(loss)income	6	2
Total shareholders' equity	19,747	18,395
TOTAL LIABILITIES AND EQUITY	$ 67,884	$ 68,374