Schedule I - Condensed Financial Information Of Parent (Schedule Of Condensed Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash and cash equivalents	$ 177	$ 123	$ 151	$ 296
Advances to affiliates	22	21
Income taxes receivable	160	155
Other Assets, Current	283	338
Total current assets	6,164	5,813
Equipment	72,595	67,342
Accumulated depreciation	(22,014)	(20,619)
Net property, plant, and equipment	50,581	46,723
Income taxes receivable	70	135
Other	1,226	1,064
TOTAL ASSETS	68,598	63,234
Short-term borrowings	1,516	1,019
Long-term debt, classified as current	700	160
Other	2,323	1,997
Total current liabilities	7,564	6,363
Long-term debt	16,220	15,925
Other	2,279	2,326
Total noncurrent liabilities	42,842	40,043
Common stock	12,198	11,282
Reinvested earnings	5,751	5,301
Accumulated other comprehensive income (loss)	(9)	(7)
Total shareholders' equity	17,940	16,576
TOTAL LIABILITIES AND EQUITY	68,598	63,234
PG&E Corporation [Member]
Cash and cash equivalents	106	64	$ 96	$ 231
Advances to affiliates	24	22
Income taxes receivable	25	24
Other Assets, Current	0	1
Total current assets	155	111
Equipment	2	2
Accumulated depreciation	(2)	(2)
Net property, plant, and equipment	0	0
Investments in subsidiaries	18,172	16,837
Other investments	133	130
Deferred income taxes	267	250
Total noncurrent assets	18,572	17,217
TOTAL ASSETS	18,727	17,328
Accounts payable - other	7	3
Other	274	246
Total current liabilities	281	249
Long-term debt	348	348
Other	158	155
Total noncurrent liabilities	506	503
Common stock	12,198	11,282
Reinvested earnings	5,751	5,301
Accumulated other comprehensive income (loss)	(9)	(7)
Total shareholders' equity	17,940	16,576
TOTAL LIABILITIES AND EQUITY	$ 18,727	$ 17,328