Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 178	$ 177
Restricted cash	7	7
Accounts receivable
Customers (net of allowance for doubtful accounts of $60 and $58 at respective dates)	1,208	1,252
Accrued unbilled revenue	988	1,098
Regulatory balancing accounts	1,565	1,500
Other	760	801
Regulatory assets	522	423
Inventories
Gas stored underground and fuel oil	132	117
Materials and supplies	369	346
Income taxes receivable	93	160
Other	249	283
Total current assets	6,071	6,164
Property, Plant, and Equipment
Electric	53,692	52,556
Gas	18,555	17,853
Construction work in progress	2,311	2,184
Other	2	2
Total property, plant, and equipment	74,560	72,595
Accumulated depreciation	(22,924)	(22,014)
Net property, plant, and equipment	51,636	50,581
Other Noncurrent Assets
Regulatory assets	8,311	7,951
Nuclear decommissioning trusts	2,733	2,606
Income taxes receivable	70	70
Other	1,234	1,226
Total other noncurrent assets	12,348	11,853
TOTAL ASSETS	70,055	68,598
Current Liabilities
Short-term borrowings	1,180	1,516
Long-term debt, classified as current	700	700
Accounts payable
Trade creditors	1,389	1,495
Regulatory balancing accounts	871	645
Other	423	433
Disputed claims and customer refunds	238	236
Interest payable	220	216
Other	1,927	2,323
Total current liabilities	6,948	7,564
Noncurrent Liabilities
Long-term debt	16,616	16,220
Regulatory liabilities	7,125	6,805
Pension and other postretirement benefits	2,687	2,641
Asset retirement obligations	4,675	4,684
Deferred income taxes	10,753	10,213
Other	2,360	2,279
Total noncurrent liabilities	44,216	42,842
Commitments and Contingencies (Note 9)
Shareholders' Equity
Common stock	12,442	12,198
Reinvested earnings	6,205	5,751
Accumulated other comprehensive income (loss)	(8)	(9)
Total shareholders' equity	18,639	17,940
Noncontrolling Interest - Preferred Stock of Subsidiary	252	252
Total equity	18,891	18,192
TOTAL LIABILITIES AND EQUITY	70,055	68,598
Pacific Gas And Electric Company [Member]
Current Assets
Cash and cash equivalents	57	71
Restricted cash	7	7
Accounts receivable
Customers (net of allowance for doubtful accounts of $60 and $58 at respective dates)	1,208	1,252
Accrued unbilled revenue	988	1,098
Regulatory balancing accounts	1,565	1,500
Other	758	801
Regulatory assets	522	423
Inventories
Gas stored underground and fuel oil	132	117
Materials and supplies	369	346
Income taxes receivable	84	159
Other	248	282
Total current assets	5,938	6,056
Property, Plant, and Equipment
Electric	53,692	52,556
Gas	18,555	17,853
Construction work in progress	2,311	2,184
Total property, plant, and equipment	74,558	72,593
Accumulated depreciation	(22,922)	(22,012)
Net property, plant, and equipment	51,636	50,581
Other Noncurrent Assets
Regulatory assets	8,311	7,951
Nuclear decommissioning trusts	2,733	2,606
Income taxes receivable	70	70
Other	1,111	1,110
Total other noncurrent assets	12,225	11,737
TOTAL ASSETS	69,799	68,374
Current Liabilities
Short-term borrowings	1,180	1,516
Long-term debt, classified as current	700	700
Accounts payable
Trade creditors	1,389	1,494
Regulatory balancing accounts	871	645
Other	468	453
Disputed claims and customer refunds	238	236
Interest payable	218	214
Other	1,664	2,072
Total current liabilities	6,728	7,330
Noncurrent Liabilities
Long-term debt	16,267	15,872
Regulatory liabilities	7,125	6,805
Pension and other postretirement benefits	2,592	2,548
Asset retirement obligations	4,675	4,684
Deferred income taxes	11,063	10,510
Other	2,306	2,230
Total noncurrent liabilities	44,028	42,649
Commitments and Contingencies (Note 9)
Shareholders' Equity
Preferred stock	258	258
Common stock	1,322	1,322
Additional paid-in capital	8,240	8,050
Reinvested earnings	9,220	8,763
Accumulated other comprehensive income (loss)	3	2
Total shareholders' equity	19,043	18,395
TOTAL LIABILITIES AND EQUITY	$ 69,799	$ 68,374