Available-for-Sale Securities (Tables)

6 Months Ended

Jun. 30, 2016

Schedule of Available-for-sale Securities [Line Items]

Fair Values And Gross Unrealized Gains And Losses For The Securities Held In The NDT Fund

The following tables show the fair values and gross unrealized gains and losses for the securities held in the NDT Fund.

	As of June 30, 2016
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	Millions
Equity Securities	$	679	$	198	$	(12	)	$	865
Debt Securities
Government Obligations	503		23		—			526
Other	348		12		(3		)	357
Total Debt Securities	851		35		(3		)	883
Other Securities	49		—		—			49
Total NDT Available-for-Sale Securities	$	1,579	$	233	$	(15	)	$	1,797

	As of December 31, 2015
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	Millions
Equity Securities	$	693	$	185	$	(13	)	$	865
Debt Securities
Government Obligations	483		8		(3		)	488
Other	366		3		(10		)	359
Total Debt Securities	849		11		(13		)	847
Other Securities	42		—		—			42
Total NDT Available-for-Sale Securities	$	1,584	$	196	$	(26	)	$	1,754

Schedule Of Accounts Receivable And Accounts Payable in the NDT Funds

The amounts in the preceding tables do not include receivables and payables for NDT Fund transactions which have not settled at the end of each period. Such amounts are included in Accounts Receivable and Accounts Payable on the Condensed Consolidated Balance Sheets as shown in the following table.

	As of		As of
	June 30, 2016		December 31, 2015
	Millions
Accounts Receivable	$	18	$	17
Accounts Payable	$	10	$	10

Value Of Securities That Have Been In An Unrealized Loss Position For Less Than And Greater Than 12 Months

The following table shows the value of securities in the NDT Fund that have been in an unrealized loss position for less than and greater than 12 months.

	As of June 30, 2016										As of December 31, 2015
	Less Than 12 Months					Greater Than 12 Months					Less Than 12 Months					Greater Than 12 Months
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
	Millions
Equity Securities (A)	$	108	$	(12	)	$	5	$	—		$	151	$	(13	)	$	1	$	—
Debt Securities
Government Obligations (B)	12		—			6		—			245		(2		)	19		(1		)
Other (C)	12		—			43		(3		)	222		(7		)	36		(3		)
Total Debt Securities	24		—			49		(3		)	467		(9		)	55		(4		)
NDT Available-for-Sale Securities	$	132	$	(12	)	$	54	$	(3	)	$	618	$	(22	)	$	56	$	(4	)

(A) Equity Securities—Investments in marketable equity securities within the NDT Fund are primarily in common stocks within a broad range of industries and sectors. The unrealized losses are distributed over a broad range of securities with limited impairment durations. Power does not consider these securities to be other-than-temporarily impaired as of June 30, 2016.

(B) Debt Securities (Government Obligations)—Unrealized losses on Power’s NDT investments in U.S. Treasury obligations and Federal Agency mortgage-backed securities were caused by interest rate changes. Since these investments are guaranteed by the U.S. government or an agency of the U.S. government, it is not expected that these securities will settle for less than their amortized cost basis, since Power does not intend to sell nor will it be more-likely-than-not required to sell. Power does not consider these securities to be other-than-temporarily impaired as of June 30, 2016.

(C) Debt Securities (Other)—Power’s investments in corporate bonds are primarily in investment grade securities. It is not expected that these securities would settle for less than their amortized cost. Since Power does not intend to sell these securities nor will it be more-likely-than-not required to sell, Power does not consider these debt securities to be other-than-temporarily impaired as of June 30, 2016.

Proceeds From The Sales Of And The Net Realized Gains On Securities In The NDT Funds And Rabbi Trusts

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2016			2015			2016			2015
	Millions
Proceeds from NDT Fund Sales (A)	$	154		$	232		$	331		$	822
Net Realized Gains (Losses) on NDT Fund:
Gross Realized Gains	10			14			25			33
Gross Realized Losses	(6		)	(4		)	(22		)	(13		)
Net Realized Gains (Losses) on NDT Fund	$	4		$	10		$	3		$	20

(A) 2015 proceeds include activity in accounts related to the liquidation of funds being transitioned to new managers

Amount Of Available-For-Sale Debt Securities By Maturity Periods

The NDT available-for-sale debt securities held as of June 30, 2016 had the following maturities:

Time Frame	Fair Value
	Millions
Less than one year	$	19
1 - 5 years	216
6 - 10 years	220
11 - 15 years	54
16 - 20 years	61
Over 20 years	313
Total NDT Available-for-Sale Debt Securities	$	883

Rabbi Trust [Member]

Schedule of Available-for-sale Securities [Line Items]

Value Of Securities That Have Been In An Unrealized Loss Position For Less Than And Greater Than 12 Months

The following table shows the value of securities in the Rabbi Trust Fund that have been in an unrealized loss position for less than and greater than 12 months.

	As of June 30, 2016									As of December 31, 2015
	Less Than 12 Months				Greater Than 12 Months					Less Than 12 Months					Greater Than 12 Months
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
	Millions
Equity Securities (A)	$	—	$	—	$	—	$	—		$	—	$	—		$	—	$	—
Debt Securities
Government Obligations (B)	14		—		3		—			53		(1		)	2		—
Other (C)	14		—		11		(1		)	46		(1		)	9		—
Total Debt Securities	28		—		14		(1		)	99		(2		)	11		—
Rabbi Trust Available-for-Sale Securities	$	28	$	—	$	14	$	(1	)	$	99	$	(2	)	$	11	$	—

(A) Equity Securities—Investments in marketable equity securities within the Rabbi Trust Fund are through a mutual fund which invests primarily in common stocks within a broad range of industries and sectors.

(B) Debt Securities (Government Obligations)—Unrealized losses on PSEG’s Rabbi Trust investments in U.S. Treasury obligations and Federal Agency mortgage-backed securities were caused by interest rate changes. Since these investments are guaranteed by the U.S. government or an agency of the U.S. government, it is not expected that these securities will settle for less than their amortized cost basis, since PSEG does not intend to sell nor will it be more-likely-than-not required to sell. PSEG does not consider these securities to be other-than-temporarily impaired as of June 30, 2016.

(C) Debt Securities (Other)—PSEG’s investments in corporate bonds are primarily in investment grade securities. It is not expected that these securities would settle for less than their amortized cost. Since PSEG does not intend to sell these securities nor will it be more-likely-than-not required to sell, PSEG does not consider these debt securities to be other-than-temporarily impaired as of June 30, 2016.

Securities Held In The Rabbi Trusts

The following tables show the fair values, gross unrealized gains and losses and amortized cost basis for the securities held in the Rabbi Trust.

	As of June 30, 2016
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	Millions
Equity Securities	$	11	$	10	$	—		$	21
Debt Securities
Government Obligations	104		2		—			106
Other	90		1		(1		)	90
Total Debt Securities	194		3		(1		)	196
Other Securities	5		—		—			5
Total Rabbi Trust Available-for-Sale Securities	$	210	$	13	$	(1	)	$	222

	As of December 31, 2015
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	Millions
Equity Securities	$	12	$	10	$	—		$	22
Debt Securities
Government Obligations	108		1		(1		)	108
Other	82		—		(1		)	81
Total Debt Securities	190		1		(2		)	189
Other Securities	2		—		—			2
Total Rabbi Trust Available-for-Sale Securities	$	204	$	11	$	(2	)	$	213

Schedule of Accounts Receivable and Accounts Payable in the Rabbi Trust Funds [Table Text Block]

The amounts in the preceding tables do not include receivables and payables for Rabbi Trust Fund transactions which have not settled at the end of each period. Such amounts are included in Accounts Receivable and Accounts Payable on the Condensed Consolidated Balance Sheets as shown in the following table.

	As of		As of
	June 30, 2016		December 31, 2015
	Millions
Accounts Receivable	$	2	$	1
Accounts Payable	$	4	$	—

Proceeds From The Sales Of And The Net Realized Gains On Securities In The NDT Funds And Rabbi Trusts

The proceeds from the sales of and the net realized gains (losses) on securities in the Rabbi Trust Fund were:

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2016			2015		2016			2015
	Millions
Proceeds from Rabbi Trust Sales (A)	$	36		$	44	$	61		$	63
Net Realized Gains (Losses) on Rabbi Trust:
Gross Realized Gains	$	2		$	2	$	3		$	2
Gross Realized Losses	(1		)	—		(2		)	—
Net Realized Gains (Losses) on Rabbi Trust	$	1		$	2	$	1		$	2

(A) 2015 proceeds include activity in accounts related to the liquidation of funds being transitioned to new managers

Amount Of Available-For-Sale Debt Securities By Maturity Periods

The Rabbi Trust available-for-sale debt securities held as of June 30, 2016 had the following maturities:

Time Frame	Fair Value
	Millions
Less than one year	$	8
1 - 5 years	45
6 - 10 years	48
11 - 15 years	6
16 - 20 years	7
Over 20 years	82
Total Rabbi Trust Available-for-Sale Debt Securities	$	196

Fair Value Of The Rabbi Trusts

The fair value of assets in the Rabbi Trust related to PSEG, PSE&G and Power are detailed as follows:

	As of		As of
	June 30, 2016		December 31, 2015
	Millions
PSE&G	$	44	$	42
Power	54		52
Other	124		119
Total Rabbi Trust Available-for-Sale Securities	$	222	$	213