LONG-TERM DEBT (Tables)

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Schedule of Long-term Debt

						June 30,								December 31,
						2013								2012
Long-Term Debt:			Stated Rate		Maturity Date	Consolidated		NVE Holding Co.		NPC		SPPC		Consolidated		NVE Holding Co.		NPC		SPPC
Secured Debt
	General and Refunding Mortgage Securities
		NPC Series L	5.875	%	2015	$	250,000	$	0	$	250,000	$	0	$	250,000	$	0	$	250,000	$	0
		NPC Series M	5.950	%	2016		210,000		0		210,000		0		210,000		0		210,000		0
		NPC Series N	6.650	%	2036		370,000		0		370,000		0		370,000		0		370,000		0
		NPC Series O	6.500	%	2018		325,000		0		325,000		0		325,000		0		325,000		0
		NPC Series R	6.750	%	2037		350,000		0		350,000		0		350,000		0		350,000		0
		NPC Series S	6.500	%	2018		500,000		0		500,000		0		500,000		0		500,000		0
		NPC Series U	7.375	%	2014		125,000		0		125,000		0		125,000		0		125,000		0
		NPC Series V	7.125	%	2019		500,000		0		500,000		0		500,000		0		500,000		0
		NPC Series X	5.375	%	2040		250,000		0		250,000		0		250,000		0		250,000		0
		NPC Series Y	5.450	%	2041		250,000		0		250,000		0		250,000		0		250,000		0
		SPPC Series M	6.000	%	2016		450,000		0		0		450,000		450,000		0		0		450,000
		SPPC Series P	6.750	%	2037		251,742		0		0		251,742		251,742		0		0		251,742
		SPPC Series Q	5.450	%	2013		250,000		0		0		250,000		250,000		0		0		250,000
	Variable Rate Debt (Secured
	by General and Refunding
	Mortgage Securities)
		NPC IDRB Series 2000A			2020		98,100		0		98,100		0		98,100		0		98,100		0
		NPC PCRB Series 2006			2036		37,700		0		37,700		0		37,700		0		37,700		0
		NPC PCRB Series 2006A			2032		37,975		0		37,975		0		37,975		0		37,975		0
		SPPC PCRB Series 2006A			2031		58,200		0		0		58,200		58,200		0		0		58,200
		SPPC PCRB Series 2006B			2036		75,000		0		0		75,000		75,000		0		0		75,000
		SPPC PCRB Series 2006C			2036		81,475		0		0		81,475		81,475		0		0		81,475
Senior Notes
		NVE Senior Notes	6.250	%	2020		315,000		315,000		-		-		315,000		315,000		-		-
		NVE Term Loan	2.560	%	2014		195,000		195,000		-		-		195,000		195,000		-		-
Obligations under capital leases							42,154		-		40,233		1,921		44,258		-		42,908		1,350
Unamortized bond premium and discount, net							1,405		-		(9,329)		10,734		1,631		-		(9,827)		11,458
Current maturities							(480,018)		-		(229,743)		(250,275)		(356,283)		-		(106,048)		(250,235)
Total Long-Term Debt						$	4,543,733	$	510,000	$	3,104,936	$	928,797	$	4,669,798	$	510,000	$	3,230,808	$	928,990