Schedule Of Consolidated Debt (Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Sep. 30, 2009
Debt Instrument [Line Items]
Principal Amount Outstanding	$ 9,157
Long-term Debt, Current Maturities	(624)		(544)
Total Long-Term Debt	8,261		7,862
PSEG [Member]
Debt Instrument [Line Items]
Fair Value Of Swaps	22	[1]	38	[1]
Long-term Debt, Current Maturities	(8)		0
Net Unamortized Discount	(8)	[2]	(14)	[2]
Total Long-Term Debt	6		24
Power [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	2,553		2,553
Long-term Debt, Current Maturities	(300)		(44)
Net Unamortized Discount	(10)		(12)
Total Long-Term Debt	2,243		2,497
Power [Member] | Senior Notes Five Point Five Zero Percentage Due Two Thousand Fifteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	300		300
Stated interest rate of debt instrument	5.50%
Maturity Year	2015
Power [Member] | Senior Notes Five Point Three Two Percentage Due Two Thousand Sixteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	303		303
Stated interest rate of debt instrument	5.32%
Maturity Year	2016
Power [Member] | Senior Notes Two Point Seven Five Percentage Due Two Thousand Sixteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250		250
Stated interest rate of debt instrument	2.75%
Maturity Year	2016
Power [Member] | Senior Notes Two Point Four Five Percentage Due Two Thousand Eighteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250		250
Stated interest rate of debt instrument	2.45%
Maturity Year	2018
Power [Member] | Senior Notes Five Point One Three Percentage Due Two Thousand Twenty [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	406		406
Stated interest rate of debt instrument	5.13%
Maturity Year	2020
Power [Member] | Senior Notes Four Point One Five Percentage Due Two Thousand Twenty One [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250		250
Stated interest rate of debt instrument	4.15%
Maturity Year	2021
Power [Member] | Senior Notes Four Point Three Percent Due Two Thousand Twenty Three [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250		250
Stated interest rate of debt instrument	4.30%
Maturity Year	2023
Power [Member] | Senior Notes Eight Point Six Three Percent Due Two Thousand Thirty One [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	500		500
Stated interest rate of debt instrument	8.63%
Maturity Year	2031
Power [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	2,509		2,509
Power [Member] | Pollution Control Notes Floating Rate Due On Two Thousand Fourteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	44	[3]	44	[3]
Maturity Year	2019	[3]
Power [Member] | Pollution Control Notes [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	44		44
PSE&G Excluding Transition Funding and Transition Funding II [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	6,329		5,579
Long-term Debt, Current Maturities	(300)		(500)
Net Unamortized Discount	(17)		(13)
Total Long-Term Debt	6,012		5,066
PSE&G [Member]
Debt Instrument [Line Items]
Long-term Debt, Current Maturities	(300)		(500)
Total Long-Term Debt	6,012		5,325
PSE&G [Member] | First And Refunding Mortgage Bonds Six Point Seven Five Percentage Due On Two Thousand Sixteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	171	[4]	171	[4]
Stated interest rate of debt instrument	6.75%
Maturity Year	2016	[4]
PSE&G [Member] | First And Refunding Mortgage Bonds Nine Point Two Five Percentage Due On Two Twenty One [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	134	[4]	134	[4]
Stated interest rate of debt instrument	9.25%
Maturity Year	2021	[4]
PSE&G [Member] | First And Refunding Mortgage Bonds Eight Point Zero Zero Percentage Due On Two Thirty Seven [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	7	[4]	7	[4]
Stated interest rate of debt instrument	8.00%
Maturity Year	2037	[4]
PSE&G [Member] | First And Refunding Mortgage Bonds Five Point Zero Zero Percentage Due On Two Thirty Seven [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	8	[4]	8	[4]
Stated interest rate of debt instrument	5.00%
Maturity Year	2037	[4]
PSE&G [Member] | First And Refunding Mortgage Bonds [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	320		320
PSE&G [Member] | Pollution Control Bonds Due On 2033 [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	50	[3],[4]	50	[3],[4]
Maturity Year	2033	[3],[4]
PSE&G [Member] | Pollution Control Bonds Due On 2046 [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	50	[3],[4]	50	[3],[4]
Maturity Year	2046	[3],[4]
PSE&G [Member] | Pollution Control Bonds [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	100		100
PSE&G [Member] | Medium Term Notes Zero Point Eight Five Percentage Due On Two Thousand Fourteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	0	[4]	250	[4]
Stated interest rate of debt instrument	0.85%
Maturity Year	2014	[4]
PSE&G [Member] | Medium Term Notes Five Point Zero Zero Percentage Due On Two Thousand Fourteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	0	[4]	250	[4]
Stated interest rate of debt instrument	5.00%
Maturity Year	2014	[4]
PSE&G [Member] | Medium Term Notes Two Point Seven Zero Percentage Due On Two Thousand Fifteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	300	[4]	300	[4]
Stated interest rate of debt instrument	2.70%
Maturity Year	2015	[4]
PSE&G [Member] | Medium Term Notes Five Point Three Zero Percentage Due On Two Thousand Eighteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	400	[4]	400	[4]
Stated interest rate of debt instrument	5.30%
Maturity Year	2018	[4]
PSE&G [Member] | Medium Term Notes Two Point Three Zero Percent Due In Two Thousand Eighteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	350	[4]	350	[4]
Stated interest rate of debt instrument	2.30%
Maturity Year	2018	[4]
PSE&G [Member] | Medium Term Notes One Point Eight Percent Due In Two Thousand Nineteen [Member] [Domain]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	0	[4]
Stated interest rate of debt instrument	1.80%
Maturity Year	2019	[4]
PSE&G [Member] | Medium Term Notes Two Point Zero Percent Due In Two Thousand Nineteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	0	[4]
Stated interest rate of debt instrument	2.00%
Maturity Year	2019	[4]
PSE&G [Member] | Medium Term Notes Seven Point Zero Four Percentage Due On Two Thousand Twenty [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	9	[4]	9	[4]
Stated interest rate of debt instrument	7.04%
Maturity Year	2020	[4]
PSE&G [Member] | Medium Term Notes Three Point Five Zero Percentage Due On Two Thousand Twenty [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	250	[4]
Stated interest rate of debt instrument	3.50%
Maturity Year	2020	[4]
PSE&G [Member] | Medium Term Notes Two Point Three Eight Percent Due In Two Thousand Twenty Three [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	500	[4]	500	[4]
Stated interest rate of debt instrument	2.375%
Maturity Year	2023	[4]
PSE&G [Member] | Medium Term Notes Three Point Seven Five Percent Due In Two Thousand Twenty Four [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	250	[4]
Stated interest rate of debt instrument	3.75%
Maturity Year	2024	[4]
PSE&G [Member] | Medium Term Notes Three Point One Five Percent Due In Two Thousand Twenty Four [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	0	[4]
Stated interest rate of debt instrument	3.15%
Maturity Year	2024	[4]
PSE&G [Member] | Medium Term Notes Three Point Zero Five Percent Due In Two Thousand Twenty Four [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	0	[4]
Stated interest rate of debt instrument	3.05%
Maturity Year	2024	[4]
PSE&G [Member] | Medium Term Notes Five Point Two Five Percentage Due On Two Thousand Thirty Five [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	250	[4]
Stated interest rate of debt instrument	5.25%
Maturity Year	2035	[4]
PSE&G [Member] | Medium Term Notes Five Point Seven Zero Percentage Due On Two Thousand Thirty Six [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	250	[4]
Stated interest rate of debt instrument	5.70%
Maturity Year	2036	[4]
PSE&G [Member] | Medium Term Notes Five Point Eight Zero Percentage Due On Two Thousand Thirty Seven [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	350	[4]	350	[4]
Stated interest rate of debt instrument	5.80%
Maturity Year	2037	[4]
PSE&G [Member] | Medium Term Notes Five Point Three Eight Percentage Due On Two Thousand Thirty Nine [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	250	[4]
Stated interest rate of debt instrument	5.38%
Maturity Year	2039	[4]
PSE&G [Member] | Medium Term Notes Five Point Five Zero Percentage Due On Two Thousand Forty [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	300	[4]	300	[4]
Stated interest rate of debt instrument	5.50%
Maturity Year	2040	[4]
PSE&G [Member] | Medium-Term Notes 3.95% Due On 2042 [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	450	[4]	450	[4]
Stated interest rate of debt instrument	3.95%
Maturity Year	2042	[4]
PSE&G [Member] | Medium-Term Notes 3.65% Due On 2042 [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	350	[4]	350	[4]
Stated interest rate of debt instrument	3.65%
Maturity Year	2042	[4]
PSE&G [Member] | Medium Term Notes Three Point Eight Zero Percent Due In Two Thousand Forty Three [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	400	[4]	400	[4]
Stated interest rate of debt instrument	3.80%
Maturity Year	2043	[4]
PSE&G [Member] | Medium Term Notes Four Point Zero Percent Due In Two Thousand Forty Four [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	250	[4]	0	[4]
Stated interest rate of debt instrument	4.00%
Maturity Year	2044	[4]
PSE&G [Member] | Total Medium Term Notes [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	5,909		5,159
PSE&G [Member] | Securitization Bonds Six Point Seven Five Percentage Due On Two Thousand Thirteen To Two Thousand Fourteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	0		106
Stated interest rate of debt instrument	6.75%
Maturity Year	2014
PSE&G [Member] | Securitization Bonds Six Point Eight Nine Percentage Due On Two Thousand Fourteen To Two Thousand Fifteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	251		370
Stated interest rate of debt instrument	6.89%
Maturity Year	2014-2015
PSE&G [Member] | Transition Funding [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	251		476
Long-term Debt, Current Maturities	(251)		(225)
Total Long-Term Debt	0		251
PSE&G [Member] | Securitization Bonds Four Point Five Seven Percentage Due On Two Thousand Thirteen To Two Thousand Fifteen [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	8		20
Stated interest rate of debt instrument	4.57%
Maturity Year	2014-2015
PSE&G [Member] | Transition Funding II [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	8		20
Long-term Debt, Current Maturities	(8)		(12)
Total Long-Term Debt	0		8
Energy Holdings [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	16
Energy Holdings [Member] | Non Recourse Project Debt Resources From Five Point Zero Zero To Eight Point Seven Five Due From Two Thousand Eleven To Two Thousand Twenty [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	16	[5]	16	[5]
Maturity Year	2014-2015	[5]
Energy Holdings [Member] | Non Recourse Project Debt [Member]
Debt Instrument [Line Items]
Principal Amount Outstanding	16		16
Long-term Debt, Current Maturities	(16)		0
Total Long-Term Debt	$ 0		$ 16
Senior Notes 8.50% Due On 2011 [Member] | Energy Holdings [Member]
Debt Instrument [Line Items]
Stated interest rate of debt instrument					8.50%

[1] PSEG entered into various interest rate swaps to hedge the fair value of certain debt at Power. The fair value adjustments from these hedges are reflected as offsets to long-term debt on the Consolidated Balance Sheets. For additional information, see Note 15. Financial Risk Management Activities.

[2] In September 2009, Power completed an exchange offer with eligible holders of Energy Holdings’ 8.50% Senior Notes due 2011 in order to manage long-term debt maturities. Since the debt exchange was between two subsidiaries of the same parent company, PSEG, and treated as a debt modification for accounting purposes, the resulting premium was deferred and is being amortized over the term of the newly issued debt. The deferred amount is reflected as an offset to Long-Term Debt on PSEG’s Consolidated Balance Sheets.

[3] The Pollution Control Financing Authority of Salem County bonds and the Pennsylvania Economic Development Authority (PEDFA) bond that are serviced and secured by PSE&G Pollution Control Bonds and Power Pollution Control Notes, respectively, are variable rate bonds that are in weekly reset mode. In October 2014, Power executed an extension of the letter of credit backing PEDFA bond. The existing letter of credit, which was scheduled to expire on November 30, 2014, has been extended through November 30, 2019.

[4] Secured by essentially all property of PSE&G pursuant to its First and Refunding Mortgage.

[5] Non-recourse financing transactions consist of loans from banks and other lenders that are typically secured by project assets and cash flows and generally impose no material obligation on the parent-level investor to repay any debt incurred by the project borrower. The consequences of permitting a project-level default include the potential for loss of any invested equity by the parent.