Financial Risk Management Activities (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Financial Risk Management Activities [Abstract]

Schedule Of Derivative Instruments Fair Value In Balance Sheets

The following tabular disclosure does not include the offsetting of trade receivables and payables.

	As of December 31, 2017
	Power (A)										PSE&G (A)		PSEG (A)		Consolidated
		Not Designated									Not Designated		Cash Flow Hedges
Balance Sheet Location		Energy- Related Contracts			Netting (B)			Total Power			Energy- Related Contracts		Interest Rate Swaps		Total Derivatives
	Millions
Derivative Contracts
Current Assets		$	391		$	(362	)	$	29		$	—	$	—	$	29
Noncurrent Assets		78			(71		)	7			—		—		7
Total Mark-to-Market Derivative Assets		$	469		$	(433	)	$	36		$	—	$	—	$	36
Derivative Contracts
Current Liabilities		$	(403	)	$	387		$	(16	)	$	—	$	—	$	(16	)
Noncurrent Liabilities		(95		)	90			(5		)	—		—		(5		)
Total Mark-to-Market Derivative (Liabilities)		$	(498	)	$	477		$	(21	)	$	—	$	—	$	(21	)
Total Net Mark-to-Market Derivative Assets (Liabilities)		$	(29	)	$	44		$	15		$	—	$	—	$	15

	As of December 31, 2016
	Power (A)										PSE&G (A)			PSEG (A)		Consolidated
		Not Designated									Not Designated			Fair Value Hedges
Balance Sheet Location		Energy- Related Contracts			Netting (B)			Total Power			Energy- Related Contracts			Interest Rate Swaps		Total Derivatives
	Millions
Derivative Contracts
Current Assets		$	435		$	(273	)	$	162		$	—		$	1	$	163
Noncurrent Assets		122			(98		)	24			—			—		24
Total Mark-to-Market Derivative Assets		$	557		$	(371	)	$	186		$	—		$	1	$	187
Derivative Contracts
Current Liabilities		$	(285	)	$	277		$	(8	)	$	(5	)	$	—	$	(13	)
Noncurrent Liabilities		(98		)	95			(3		)	—			—		(3		)
Total Mark-to-Market Derivative (Liabilities)		$	(383	)	$	372		$	(11	)	$	(5	)	$	—	$	(16	)
Total Net Mark-to-Market Derivative Assets (Liabilities)		$	174		$	1		$	175		$	(5	)	$	1	$	171

(A) Substantially all of Power's and PSEG's derivative instruments are contracts subject to master netting agreements. Contracts not subject to master netting or similar agreements are immaterial and did not have any collateral posted or received as of December 31, 2017 and 2016. PSE&G does not have any derivative contracts subject to master netting or similar agreements.

(B) Represents the netting of fair value balances with the same counterparty (where the right of offset exists) and the application of collateral. All cash collateral received or posted that has been allocated to derivative positions, where the right of offset exists, has been offset on the Consolidated Balance Sheets. As of December 31, 2017, and 2016, Power had net cash collateral/margin payments to counterparties of $146 million and $56 million, respectively. Of these net cash collateral/margin payments, $44 million as of December 31, 2017 and $1 million as of December 31, 2016 were netted against the corresponding net derivative contract positions. Of the $44 million as of December 31, 2017, $(3) million was netted against current assets, $28 million was netted against current liabilities and $19 million was netted against noncurrent liabilities. Of the $1 million as of December 31, 2016, $(3) million was netted against noncurrent assets and $4 million was netted against current liabilities.

Schedule Of Derivative Instruments Designated As Cash Flow Hedges

The following shows the effect on the Consolidated Statements of Operations and on Accumulated Other Comprehensive Income (AOCI) of derivative instruments designated as cash flow hedges for the years ended December 31, 2017, 2016 and 2015.

	Amount of Pre-Tax Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)						Location of Pre-Tax Gain (Loss) Reclassified from AOCI into Income	Amount of Pre-Tax Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
Derivatives in Cash Flow Hedging Relationships	Years Ended December 31,							Years Ended December 31,
	2017		2016		2015			2017		2016		2015
	Millions							Millions
PSEG
Energy-Related Contracts	$	—	$	—	$	3	Operating Revenues	$	—	$	—	$	20
Interest Rate Swaps	—		3		—		Interest Expense	3		—		—
Total PSEG	$	—	$	3	$	3		$	3	$	—	$	20
Power
Energy-Related Contracts	$	—	$	—	$	3	Operating Revenues	$	—	$	—	$	20
Total Power	$	—	$	—	$	3		$	—	$	—	$	20

There were no pre-tax gain (loss) recognized in income on derivatives (ineffective portion) as of December 31, 2017, 2016 and 2015.

Schedule Of Reconciliation For Derivative Activity Included In Accumulated Other Comprehensive Loss

The following reconciles the AOCI for derivative activity included in the Accumulated Other Comprehensive Loss of PSEG on a pre-tax and after-tax basis.

Accumulated Other Comprehensive Income	Pre-Tax			After-Tax
	Millions
Balance as of December 31, 2015	$	—		$	—
Gain Recognized in AOCI	3			2
Less: Gain Reclassified into Income	—			—
Balance as of December 31, 2016	$	3		$	2
Gain Recognized in AOCI	—			—
Less: Gain Reclassified into Income	(3		)	(2		)
Balance as of December 31, 2017	$	—		$	—

Schedule Of Derivative Instruments Not Designated As Hedging Instruments And Impact On Results Of Operations

The following shows the effect on the Consolidated Statements of Operations of derivative instruments not designated as hedging instruments or as NPNS for the years ended December 31, 2017, 2016 and 2015. Power’s derivative contracts reflected in this table include contracts to hedge the purchase and sale of electricity and natural gas, and the purchase of fuel. The table does not include contracts which Power has designated as NPNS, such as its BGS contracts and certain other energy supply contracts that it has with other utilities and companies with retail load.

Derivatives Not Designated as Hedges	Location of Pre-Tax Gain (Loss) Recognized in Income on Derivatives	Pre-Tax Gain (Loss) Recognized in Income on Derivatives
		Years Ended December 31,
		2017			2016			2015
		Millions
PSEG and Power
Energy-Related Contracts	Operating Revenues	$	72		$	230		$	412
Energy-Related Contracts	Energy Costs	(17		)	(8		)	(8		)
Total PSEG and Power		$	55		$	222		$	404

Schedule Of Gross Volume, On Absolute Value Basis For Derivative Contracts

The following table summarizes the net notional volume purchases/(sales) of open derivative transactions by commodity as of December 31, 2017 and 2016.

Type	Notional	Total		PSEG	Power		PSE&G
	Millions
As of December 31, 2017
Natural Gas	Dth	154		—	154		—
Electricity	MWh	(63	)	—	(63	)	—
Financial Transmission Rights (FTRs)	MWh	6		—	6		—
As of December 31, 2016
Natural Gas	Dth	122		—	113		9
Electricity	MWh	(44	)	—	(44	)	—
FTRs	MWh	9		—	9		—
Interest Rate Swaps	U.S. Dollars	500		500	—		—

Schedule Providing Credit Risk From Others, Net Of Collateral

.

The following table provides information on Power’s credit risk from others, net of collateral, as of December 31, 2017. It further delineates that exposure by the credit rating of the counterparties, which is determined by the lowest rating from S&P, Moody’s or an internal scoring model. In addition, it provides guidance on the concentration of credit risk to individual counterparties and an indication of the quality of Power’s credit risk by credit rating of the counterparties.

Rating	Current Exposure		Securities held as Collateral		Net Exposure		Number of Counterparties >10%	Net Exposure of Counterparties >10%
	Millions							Millions
Investment Grade	$	329	$	25	$	304	1	$	204	(A)
Non-Investment Grade	3		1		2		—	—
Total	$	332	$	26	$	306	1	$	204

(A) Represents net exposure with PSE&G.