Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 700	$ 558
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	314	280
Amortization of Nuclear Fuel	47	50
Emission Allowances and Renewable Energy Credit Compliance Accrual	24	24
Provision for Deferred Income Taxes and ITC	102	76
Non-Cash Employee Benefit Plan (Credits) Costs	(3)	17
Leveraged Lease Income, Adjusted for Rents Received and Deferred Taxes	(1)	4
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	(109)	(119)
Net Change in Regulatory Assets and Liabilities	69	(6)
Cost of Removal	(30)	(38)
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(137)	12
Net Change in Certain Current Assets and Liabilities:
Tax Receivable	77	6
Accrued Taxes	26	125
Margin Deposit	190	25
Other Current Assets and Liabilities	(67)	160
Employee Benefit Plan Funding and Related Payments	(14)	(36)
Other	30	2
Net Cash Provided By (Used In) Operating Activities	1,218	1,140
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(795)	(1,053)
Purchase of Emissions Allowances and RECs	(21)	(17)
Proceeds from Sale of Available-for-Sale Securities	497	397
Investments in Available-for-Sale Securities	(507)	(407)
Other	10	7
Net Cash Provided By (Used In) Investing Activities	(816)	(1,073)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	135	52
Redemption of Long-term Debt	350	0
Cash Dividends Paid on Common Stock	(238)	(227)
Other	(52)	(73)
Net Cash Provided By (Used In) Financing Activities	(505)	(248)
Net Increase (Decrease) In Cash, Cash Equivalents and Restricted Cash	(103)	(181)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	199	315
Cash, Cash Equivalents and Restricted Cash at End of Period	96	134
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	(76)	(4)
Interest Paid, Net of Amounts Capitalized	91	73
Accrued Property, Plant and Equipment Expenditures	456	544
PSE And G [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	403	319
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	212	190
Provision for Deferred Income Taxes and ITC	(12)	40
Non-Cash Employee Benefit Plan (Credits) Costs	(9)	9
Net Change in Regulatory Assets and Liabilities	69	(6)
Cost of Removal	(30)	(38)
Net Change in Certain Current Assets and Liabilities:
Accounts Receivable and Unbilled Revenues	(119)	24
Fuel, Materials and Supplies	(5)	(2)
Prepayments	3	22
Accounts Payable	(108)	(12)
Accounts Receivable/Payable-Affiliated Companies, net	87	40
Other Current Assets and Liabilities	35	39
Employee Benefit Plan Funding and Related Payments	(10)	(33)
Other	4	(15)
Net Cash Provided By (Used In) Operating Activities	520	577
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(625)	(750)
Proceeds from Sale of Available-for-Sale Securities	10	5
Investments in Available-for-Sale Securities	(9)	(5)
Solar Loan Investments	(5)	(9)
Other	2	2
Net Cash Provided By (Used In) Investing Activities	(627)	(757)
CASH FLOWS FROM FINANCING ACTIVITIES
Net Change in Commercial Paper and Loans	92	0
Net Cash Provided By (Used In) Financing Activities	92	0
Net Increase (Decrease) In Cash, Cash Equivalents and Restricted Cash	(15)	(180)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	61	244
Cash, Cash Equivalents and Restricted Cash at End of Period	46	64
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	(94)	0
Interest Paid, Net of Amounts Capitalized	73	65
Accrued Property, Plant and Equipment Expenditures	273	326
Power [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	296	234
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	94	82
Amortization of Nuclear Fuel	47	50
Emission Allowances and Renewable Energy Credit Compliance Accrual	24	24
Provision for Deferred Income Taxes and ITC	121	33
Interest Accretion on Asset Retirement Obligations	10	10
Non-Cash Employee Benefit Plan (Credits) Costs	4	6
Net Realized and Unrealized (Gains) Losses on Energy Contracts and Other Derivatives	(109)	(119)
Net Realized (Gains) Losses and (Income) Expense from NDT Fund	(137)	12
Net Change in Certain Current Assets and Liabilities:
Fuel, Materials and Supplies	189	133
Margin Deposit	190	25
Accounts Receivable	34	93
Accounts Payable	(57)	(89)
Accounts Receivable/Payable-Affiliated Companies, net	(22)	25
Other Current Assets and Liabilities	37	30
Employee Benefit Plan Funding and Related Payments	(3)	(2)
Other	8	(5)
Net Cash Provided By (Used In) Operating Activities	726	542
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(167)	(299)
Purchase of Emissions Allowances and RECs	(21)	(17)
Proceeds from Sale of Available-for-Sale Securities	463	377
Investments in Available-for-Sale Securities	(475)	(389)
Short-Term Loan-Affiliated Company	87	0
Other	11	11
Net Cash Provided By (Used In) Investing Activities	(276)	(317)
CASH FLOWS FROM FINANCING ACTIVITIES
Short-Term Loan-Affiliated Company	(193)	(246)
Cash Dividends Paid on Common Stock	(250)	0
Other	(1)	0
Net Cash Provided By (Used In) Financing Activities	(444)	(246)
Net Increase (Decrease) In Cash, Cash Equivalents and Restricted Cash	6	(21)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	22	32
Cash, Cash Equivalents and Restricted Cash at End of Period	28	11
Supplemental Disclosure of Cash Flow Information:
Income Taxes Paid (Received)	11	2
Interest Paid, Net of Amounts Capitalized	6	2
Accrued Property, Plant and Equipment Expenditures	$ 183	$ 218