Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Current Assets
Cash and cash equivalents	$ 177	$ 123
Restricted cash	7	234
Accounts receivable
Customers (net of allowance for doubtful accounts of $58 and $54 at respective dates)	1,252	1,106
Accrued unbilled revenue	1,098	855
Regulatory balancing accounts	1,500	1,760
Other	801	286
Regulatory assets	423	517
Inventories
Gas stored underground and fuel oil	117	126
Materials and supplies	346	313
Income taxes receivable	160	155
Other	283	338
Total current assets	6,164	5,813
Property, Plant, and Equipment
Electric	52,556	48,532
Gas	17,853	16,749
Construction work in progress	2,184	2,059
Other	2	2
Total property, plant, and equipment	72,595	67,342
Accumulated depreciation	(22,014)	(20,619)
Net property, plant, and equipment	50,581	46,723
Other Noncurrent Assets
Regulatory assets	7,951	7,029
Nuclear decommissioning trusts	2,606	2,470
Income taxes receivable	70	135
Other	1,226	1,064
Total other noncurrent assets	11,853	10,698
TOTAL ASSETS	68,598	63,234
Current Liabilities
Short-term borrowings	1,516	1,019
Long-term debt, classified as current	700	160
Accounts payable
Trade creditors	1,495	1,414
Regulatory balancing accounts	645	715
Other	433	398
Disputed claims and customer refunds	236	454
Interest payable	216	206
Other	2,323	1,997
Total current liabilities	7,564	6,363
Noncurrent Liabilities
Long-term debt	16,220	15,925
Regulatory liabilities	6,805	6,321
Pension and other postretirement benefits	2,641	2,622
Asset retirement obligations	4,684	3,643
Deferred income taxes	10,213	9,206
Other	2,279	2,326
Total noncurrent liabilities	42,842	40,043
Commitments and Contingencies (Note 13)
Shareholders' Equity
Common stock	12,198	11,282
Reinvested earnings	5,751	5,301
Accumulated other comprehensive(loss)income	(9)	(7)
Total shareholders' equity	17,940	16,576
Noncontrolling Interest - Preferred Stock of Subsidiary	252	252
Total equity	18,192	16,828
TOTAL LIABILITIES AND EQUITY	68,598	63,234
Pacific Gas And Electric Company [Member]
Current Assets
Cash and cash equivalents	71	59
Restricted cash	7	234
Accounts receivable
Customers (net of allowance for doubtful accounts of $58 and $54 at respective dates)	1,252	1,106
Accrued unbilled revenue	1,098	855
Regulatory balancing accounts	1,500	1,760
Other	801	284
Regulatory assets	423	517
Inventories
Gas stored underground and fuel oil	117	126
Materials and supplies	346	313
Income taxes receivable	159	130
Other	282	338
Total current assets	6,056	5,722
Property, Plant, and Equipment
Electric	52,556	48,532
Gas	17,853	16,749
Construction work in progress	2,184	2,059
Total property, plant, and equipment	72,593	67,340
Accumulated depreciation	(22,012)	(20,617)
Net property, plant, and equipment	50,581	46,723
Other Noncurrent Assets
Regulatory assets	7,951	7,029
Nuclear decommissioning trusts	2,606	2,470
Income taxes receivable	70	135
Other	1,110	958
Total other noncurrent assets	11,737	10,592
TOTAL ASSETS	68,374	63,037
Current Liabilities
Short-term borrowings	1,516	1,019
Long-term debt, classified as current	700	160
Accounts payable
Trade creditors	1,494	1,414
Regulatory balancing accounts	645	715
Other	453	418
Disputed claims and customer refunds	236	454
Interest payable	214	203
Other	2,072	1,750
Total current liabilities	7,330	6,133
Noncurrent Liabilities
Long-term debt	15,872	15,577
Regulatory liabilities	6,805	6,321
Pension and other postretirement benefits	2,548	2,534
Asset retirement obligations	4,684	3,643
Deferred income taxes	10,510	9,487
Other	2,230	2,282
Total noncurrent liabilities	42,649	39,844
Commitments and Contingencies (Note 13)
Shareholders' Equity
Preferred stock	258	258
Common stock	1,322	1,322
Additional paid-in capital	8,050	7,215
Reinvested earnings	8,763	8,262
Accumulated other comprehensive(loss)income	2	3
Total shareholders' equity	18,395	17,060
TOTAL LIABILITIES AND EQUITY	$ 68,374	$ 63,037