Schedule I - Condensed Financial Information Of Parent (Schedule Of Condensed Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash and cash equivalents	$ 123	$ 151	$ 296	$ 401
Advances to affiliates	21	20
Income taxes receivable	155	198
Other Assets, Current	347	443
Total current assets	5,822	6,389
Equipment	67,342	63,062
Accumulated depreciation	(20,619)	(19,121)
Net property, plant, and equipment	46,723	43,941
Income taxes receivable	135	91
Other	1,160	963
TOTAL ASSETS	63,339	60,127
Short-term borrowings	1,019	633
Long-term debt, classified as current	160	0
Other	1,997	1,846
Total current liabilities	6,363	5,920
Long-term debt	16,030	15,050
Other	2,326	2,218
Total noncurrent liabilities	40,148	38,207
Common stock	11,282	10,421
Reinvested earnings	5,301	5,316
Accumulated other comprehensive income (loss)	(7)	11	50
Total shareholders' equity	16,576	15,748
TOTAL LIABILITIES AND EQUITY	63,339	60,127
PG&E Corporation [Member]
Cash and cash equivalents	64	96	$ 231	$ 207
Advances to affiliates	22	31
Income taxes receivable	24	29
Other Assets, Current	1	38
Total current assets	111	194
Equipment	2	2
Accumulated depreciation	(2)	(1)
Net property, plant, and equipment	0	1
Investments in subsidiaries	16,837	16,003
Other investments	130	117
Deferred income taxes	250	260
Total noncurrent assets	17,217	16,381
TOTAL ASSETS	17,328	16,575
Accounts payable - other	3	67
Other	246	269
Total current liabilities	249	336
Long-term debt	350	350
Other	153	141
Total noncurrent liabilities	503	491
Common stock	11,282	10,421
Reinvested earnings	5,301	5,316
Accumulated other comprehensive income (loss)	(7)	11
Total shareholders' equity	16,576	15,748
TOTAL LIABILITIES AND EQUITY	$ 17,328	$ 16,575