Condensed Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 704	$ 849
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Gain on Disposal of Discontinued Operations	0	(82)
Depreciation and Amortization	511	483
Amortization of Nuclear Fuel	84	75
Provision for Deferred Income Taxes (Other than Leases) and ITC	165	(28)
Non-Cash Employee Benefit Plan Costs	134	101
Leveraged Lease Income, Adjusted for Rents Received and Deferred Taxes	(98)	(21)
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	(86)	35
Over (Under) Recovery of Electric Energy Costs (BGS and NTC) and Gas Costs	8	23
Over (Under) Recovery of SBC	(30)	(19)
Market Transition Charge (MTC) Refund	(23)	(29)
Cost of Removal	(44)	(25)
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(26)	(93)
Net Change in Tax Receivable	0	593
Net Change in Certain Current Assets and Liabilities	278	(2)
Net Change in Certain Current Assets and Liabilities:
Employee Benefit Plan Funding and Related Payments	(175)	(465)
Other	(24)	0
Net Cash Provided By (Used In) Operating Activities	1,378	1,395
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(1,280)	(1,002)
Proceeds from Sale of Discontinued Operations	0	352
Proceeds from Sale of Available-for-Sale Securities	850	657
Investments in Available-for-Sale Securities	(867)	(676)
Other	(42)	(4)
Net Cash Provided By (Used In) Investing Activities	(1,339)	(673)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	16	234
Issuance of Long-Term Debt	500	0
Redemption of Long-Term Debt	(139)	(606)
Repayment of Non-Recourse Debt	0	(1)
Redemption of Securitization Debt	(101)	(96)
Cash Dividend Paid	(359)	(347)
Other	(25)	(27)
Net Cash Provided By (Used In) Financing Activities	(108)	(843)
Net Increase (Decrease) In Cash and Cash Equivalents	(69)	(121)
Cash and Cash Equivalents at Beginning of Period	834	280
Cash and Cash Equivalents at End of Period	765	159
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	114	57
Interest Paid, Net of Amounts Capitalized	197	259
Increase (Decrease) in Accrued Property, Plant and Equipment Expenditures	(129)	(118)
Power [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	357	569
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Gain on Disposal of Discontinued Operations	0	(82)
Depreciation and Amortization	115	116
Amortization of Nuclear Fuel	84	75
Provision for Deferred Income Taxes (Other than Leases) and ITC	184	(92)
Non-Cash Employee Benefit Plan Costs	34	24
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	(86)	35
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(26)	(93)
Net Change in Certain Current Assets and Liabilities:
Fuel, Materials and Supplies	94	99
Margin Deposit	36	(54)
Accounts Receivable	40	162
Accounts Payable	(14)	(141)
Accounts Receivable/Payable-Affiliated Companies, net	73	649
Other Current Assets and Liabilities	(6)	10
Employee Benefit Plan Funding and Related Payments	(39)	(125)
Other	6	(6)
Net Cash Provided By (Used In) Operating Activities	852	1,146
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(344)	(323)
Proceeds from Sale of Discontinued Operations	0	352
Proceeds from Sale of Available-for-Sale Securities	677	657
Investments in Available-for-Sale Securities	(692)	(672)
Short-Term Loan-Affiliated Company, net	170	(211)
Other	0	16
Net Cash Provided By (Used In) Investing Activities	(189)	(181)
CASH FLOWS FROM FINANCING ACTIVITIES
Redemption of Long-Term Debt	(66)	(606)
Cash Dividend Paid	(600)	(350)
Other	(7)	(6)
Net Cash Provided By (Used In) Financing Activities	(673)	(962)
Net Increase (Decrease) In Cash and Cash Equivalents	(10)	3
Cash and Cash Equivalents at Beginning of Period	12	11
Cash and Cash Equivalents at End of Period	2	14
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	118	69
Interest Paid, Net of Amounts Capitalized	57	101
Increase (Decrease) in Accrued Property, Plant and Equipment Expenditures	(83)	(69)
PSE And G [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	298	268
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	378	351
Provision for Deferred Income Taxes (Other than Leases) and ITC	75	65
Non-Cash Employee Benefit Plan Costs	89	67
Over (Under) Recovery of Electric Energy Costs (BGS and NTC) and Gas Costs	8	23
Over (Under) Recovery of SBC	(30)	(19)
Market Transition Charge (MTC) Refund	(23)	(29)
Cost of Removal	(44)	(25)
Net Change in Certain Current Assets and Liabilities:
Accounts Receivable and Unbilled Revenues	108	204
Fuel, Materials and Supplies	(8)	(2)
Prepayments	(126)	(234)
Accounts Receivable/Payable-Affiliated Companies, net	(94)	(65)
Other Current Assets and Liabilities	(11)	(30)
Employee Benefit Plan Funding and Related Payments	(121)	(294)
Other	(40)	(1)
Net Cash Provided By (Used In) Operating Activities	459	279
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(870)	(674)
Proceeds from Sale of Available-for-Sale Securities	71	0
Investments in Available-for-Sale Securities	(71)	0
Solar Loan Investments	(48)	(23)
Restricted Funds	3	0
Net Cash Provided By (Used In) Investing Activities	(915)	(697)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Short-Term Debt	16	298
Issuance of Long-Term Debt	500	0
Redemption of Long-Term Debt	(73)	0
Redemption of Securitization Debt	(101)	(96)
Deferred Issuance Costs	(7)	(3)
Net Cash Provided By (Used In) Financing Activities	335	199
Net Increase (Decrease) In Cash and Cash Equivalents	(121)	(219)
Cash and Cash Equivalents at Beginning of Period	143	245
Cash and Cash Equivalents at End of Period	22	26
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	4	(44)
Interest Paid, Net of Amounts Capitalized	139	153
Increase (Decrease) in Accrued Property, Plant and Equipment Expenditures	$ (46)	$ (49)