Fair Value Disclosures (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value Disclosures Tables [Abstract]

Available for sale securities

(in millions)		Fair Value		Unrealized Losses		Unrealized Gains
March 31, 2012
Common stock equity		$	1,160	$	16	$	508
Preferred stock and other equity			43		-		14
Corporate debt			90		-		7
U.S. state and municipal debt			124		2		7
U.S. and foreign government debt			293		-		14
Money market funds and other			55		1		1
	Total	$	1,765	$	19	$	551
December 31, 2011
Common stock equity		$	1,033	$	29	$	401
Preferred stock and other equity			29		-		11
Corporate debt			86		-		6
U.S. state and municipal debt			128		2		7
U.S. and foreign government debt			284		-		18
Money market funds and other			70		-		1
	Total	$	1,630	$	31	$	444

Available for sale debt securities by contractual maturity

(in millions)
Due in one year or less	$	34
Due after one through five years		217
Due after five through 10 years		175
Due after 10 years		94
Total	$	520

Sales of available for sale securities

(in millions)	2012		2011
Proceeds	$	304	$	1,744
Realized gains		7		9
Realized losses		3		4

Fair value measurements- assets and liabilities

PROGRESS ENERGY
(in millions)			Level 1		Level 2		Level 3		Total
March 31, 2012
Assets
	Nuclear decommissioning trust funds
		Common stock equity	$	1,160	$	-	$	-	$	1,160
		Preferred stock and other equity		33		10		-		43
		Corporate debt		-		90		-		90
		U.S. state and municipal debt		-		124		-		124
		U.S. and foreign government debt		129		164		-		293
		Money market funds and other		1		51		-		52
	Total nuclear decommissioning trust funds			1,323		439		-		1,762
	Derivatives
		Commodity forward contracts		-		8		-		8
	Other marketable securities
		Money market and other		18		-		-		18
		Total assets	$	1,341	$	447	$	-	$	1,788
Liabilities
	Derivatives
		Commodity forward contracts	$	-	$	769	$	27	$	796
		Interest rate contracts		-		49		-		49
		Contingent value obligations derivatives		-		3		-		3
		Total liabilities	$	-	$	821	$	27	$	848
(in millions)				Level 1		Level 2		Level 3		Total
December 31, 2011
Assets
	Nuclear decommissioning trust funds
		Common stock equity	$	1,033	$	-	$	-	$	1,033
		Preferred stock and other equity		28		1		-		29
		Corporate debt		-		86		-		86
		U.S. state and municipal debt		-		128		-		128
		U.S. and foreign government debt		87		197		-		284
		Money market funds and other		-		87		-		87
	Total nuclear decommissioning trust funds			1,148		499		-		1,647
	Derivatives
		Commodity forward contracts		-		5		-		5
	Other marketable securities
		Money market and other		20		-		-		20
		Total assets	$	1,168	$	504	$	-	$	1,672
Liabilities
	Derivatives
		Commodity forward contracts	$	-	$	668	$	24	$	692
		Interest rate contracts		-		93		-		93
		Contingent value obligations derivatives		-		14		-		14
		Total liabilities	$	-	$	775	$	24	$	799

Fair value, liabilities measured on recurring basis, unobservable input reconciliation

PROGRESS ENERGY
(in millions)	2012		2011
Derivatives, net at January 1	$	24	$	36
Total unrealized losses (gains) deferred as regulatory assets and liabilities, net		3		(4)
Derivatives, net at March 31	$	27	$	32

Fair Value Inputs Liabilities Quantitative Information [Table Text Block]

PROGRESS ENERGY
(in millions)	Fair Value		Valuation Technique	Unobservable Input		Range (price per MMBtu)
March 31, 2012
Commodity natural gas hedges	$	27	Discounted cash flow	Forward natural gas curves	$	4.111	-	4.528