Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)	$ 1,239	$ 618
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	854	1,721
Amortization of Nuclear Fuel	143	152
Emission Allowances and Renewable Energy Credit Compliance Accrual	74	79
Provision for Deferred Income Taxes and ITC	510	227
Non-Cash Employee Benefit Plan Costs	52	67
Leveraged Lease Income, Adjusted for Rents Received and Deferred Taxes	(27)	(7)
Loss on Leases, net of tax	14	48
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	78	8
Net Change in Regulatory Assets and Liabilities	(35)	(121)
Cost of Removal	(121)	(72)
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(62)	(86)
Net Change in Certain Current Assets and Liabilities:
Tax Receivable	(98)	64
Accrued Taxes	(12)	115
Margin Deposit	(77)	64
Other Current Assets and Liabilities	12	(71)
Employee Benefit Plan Funding and Related Payments	(85)	(64)
Other	33	(9)
Net Cash Provided By (Used In) Operating Activities	2,492	2,733
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(3,028)	(3,046)
Purchase of Emissions Allowances and RECs	(111)	(90)
Proceeds from Sale of Available-for-Sale Securities	1,085	1,013
Investments in Available-for-Sale Securities	(1,100)	(1,029)
Other	41	48
Net Cash Provided By (Used In) Investing Activities	(3,113)	(3,104)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	(123)	(186)
Issuance of Long-term Debt	2,050	1,125
Redemption of Long-term Debt	750	0
Cash Dividends Paid on Common Stock	(682)	(652)
Other	(83)	(62)
Net Cash Provided By (Used In) Financing Activities	412	225
Net Increase (Decrease) In Cash, Cash Equivalents and Restricted Cash	(209)	(146)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	315	426
Cash, Cash Equivalents and Restricted Cash at End of Period	106	280
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	64	(16)
Interest Paid, Net of Amounts Capitalized	292	261
Accrued Property, Plant and Equipment Expenditures	543	604
PSE And G [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)	828	753
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	569	506
Provision for Deferred Income Taxes and ITC	330	497
Non-Cash Employee Benefit Plan Costs	28	37
Net Change in Regulatory Assets and Liabilities	(35)	(121)
Cost of Removal	(121)	(72)
Net Change in Certain Current Assets and Liabilities:
Accounts Receivable and Unbilled Revenues	184	136
Fuel, Materials and Supplies	(3)	(13)
Prepayments	(73)	(106)
Accounts Payable	(7)	(37)
Accounts Receivable/Payable-Affiliated Companies, net	(232)	(61)
Other Current Assets and Liabilities	10	(14)
Employee Benefit Plan Funding and Related Payments	(73)	(55)
Other	(8)	(58)
Net Cash Provided By (Used In) Operating Activities	1,397	1,392
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(2,213)	(2,118)
Proceeds from Sale of Available-for-Sale Securities	15	33
Investments in Available-for-Sale Securities	(17)	(34)
Solar Loan Investments	(15)	(2)
Other	6	7
Net Cash Provided By (Used In) Investing Activities	(2,224)	(2,114)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	40	0
Issuance of Long-term Debt	1,350	425
Contributed Capital	0	150
Redemption of Long-term Debt	750	0
Other	(14)	(5)
Net Cash Provided By (Used In) Financing Activities	626	570
Net Increase (Decrease) In Cash, Cash Equivalents and Restricted Cash	(201)	(152)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	244	393
Cash, Cash Equivalents and Restricted Cash at End of Period	43	241
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	60	(107)
Interest Paid, Net of Amounts Capitalized	223	208
Accrued Property, Plant and Equipment Expenditures	375	363
Power [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)	400	(131)
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	260	1,191
Amortization of Nuclear Fuel	143	152
Emission Allowances and Renewable Energy Credit Compliance Accrual	74	79
Provision for Deferred Income Taxes and ITC	177	(259)
Interest Accretion on Asset Retirement Obligations	31	23
Non-Cash Employee Benefit Plan Costs	17	21
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	78	8
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(62)	(86)
Net Change in Certain Current Assets and Liabilities:
Fuel, Materials and Supplies	(50)	(32)
Margin Deposit	(77)	64
Accounts Receivable	42	19
Accounts Payable	(22)	(32)
Accounts Receivable/Payable-Affiliated Companies, net	65	205
Other Current Assets and Liabilities	(11)	11
Employee Benefit Plan Funding and Related Payments	(7)	(5)
Other	(53)	21
Net Cash Provided By (Used In) Operating Activities	1,005	1,249
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(800)	(903)
Purchase of Emissions Allowances and RECs	(111)	(90)
Proceeds from Sale of Available-for-Sale Securities	1,024	886
Investments in Available-for-Sale Securities	(1,037)	(900)
Short-Term Loan-Affiliated Company	119	(86)
Other	33	37
Net Cash Provided By (Used In) Investing Activities	(1,010)	(884)
CASH FLOWS FROM FINANCING ACTIVITIES
Short-Term Loan-Affiliated Company	(281)	0
Issuance of Long-term Debt	700	0
Cash Dividends Paid on Common Stock	(400)	(350)
Other	(5)	(4)
Net Cash Provided By (Used In) Financing Activities	14	(354)
Net Increase (Decrease) In Cash, Cash Equivalents and Restricted Cash	9	11
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	32	11
Cash, Cash Equivalents and Restricted Cash at End of Period	41	22
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	31	75
Interest Paid, Net of Amounts Capitalized	32	30
Accrued Property, Plant and Equipment Expenditures	$ 168	$ 241