Benefit Plans (Tables)

3 Months Ended

9 Months Ended

Sep. 30, 2012

Sep. 30, 2012

Benefit Plans Disclosure [Line Items]

Schedule of Net Benefit Costs [Tables]

PROGRESS ENERGY
		Qualified					Non-Qualified			Other Post-Retirement
		Pension Plans				Pension Plans				Benefit Plans
(in millions)			2012		2011		2012		2011		2012		2011
Service cost		$	16	$	13	$	0	$	0	$	5	$	3
Interest cost on projected benefit obligation			32		33		2		2		11		10
Expected return on plan assets			(48)		(45)		0		0		0		0
Amortization of prior service cost (a)			2		2		0		0		0		0
Amortization net transition liability(a)			0		0		0		0		1		1
Amortization of actuarial loss(a)			24		15		1		1		10		3
Special termination costs			0		0		0		0		5		0
Other			1		0		0		0		0		0
	Net periodic cost	$	27	$	18	$	3	$	3	$	32	$	17
(a)	Adjusted to reflect PEF’s rate treatment. See Note 17B in the 2011 Form 10-K.

PROGRESS ENERGY
			Qualified				Non-Qualified			Other Post-Retirement
			Pension Plans				Pension Plans					Benefit Plans
(in millions)			2012		2011		2012		2011			2012		2011
Service cost		$	47	$	39	$	1	$	1		$	12	$	8
Interest cost on projected benefit obligation			95		98		6		7			32		30
Expected return on plan assets			(141)		(136)		0		0			(1)		(1)
Amortization of prior service cost (a)			7		5		0		0			0		0
Amortization of net transition liability(a)			0		0		0		0			3		4
Amortization of actuarial loss(a)			69		47		3		2			25		9
Special termination cost			0		0		0		0			5		0
Other			1		0		0		0			0		0
	Net periodic cost	$	78	$	53	$	10	$	10		$	76	$	50
(a)	Adjusted to reflect PEF’s rate treatment. See Note 17B in the 2011 Form 10-K.

Net periodic cost weighted-average actuarial assumptions [Tables]

		Qualified Pension Benefits	Non-Qualified Pension Benefits	Other Post-Retirement Benefits
Discount rate		4.60%	4.60%	4.60%
Rate of increase in future compensation
	Bargaining	4.00%	N/A	N/A
	Supplementary plans	N/A	5.25%	N/A
Expected long-term rate of return on plan assets		8.00%	N/A	N/A

Weighted-average actuarial assumptions in year-end obligation calculations [Tables]

Health care cost trend rate assumed for 2012	8.75%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00%
Year that the rate reaches the ultimate trend rate	2020

PEC [Member]

Benefit Plans Disclosure [Line Items]

Schedule of Net Benefit Costs [Tables]

PEC
		Qualified					Non-Qualified			Other Post-Retirement
		Pension Plans				Pension Plans				Benefit Plans
(in millions)			2012		2011		2012		2011		2012		2011
Service cost		$	6	$	5	$	0	$	0	$	2	$	2
Interest cost on projected benefit obligation			15		15		1		1		6		5
Expected return on plan assets			(25)		(23)		0		0		0		0
Amortization of prior service cost			2		1		0		0		0		0
Amortization net transition liability			0		0		0		0		0		0
Amortization of actuarial loss			9		7		0		0		6		1
Special termination costs			0		0		0		0		2		0
Other			1		0		0		0		0		0
	Net periodic cost	$	8	$	5	$	1	$	1	$	16	$	8

PEC
			Qualified				Non-Qualified			Other Post-Retirement
			Pension Plans				Pension Plans				Benefit Plans
(in millions)			2012		2011		2012		2011		2012		2011
Service cost		$	19	$	15	$	1	$	1	$	6	$	3
Interest cost on projected benefit obligation			43		46		1		1		17		15
Expected return on plan assets			(72)		(68)		0		0		0		0
Amortization of prior service cost			6		4		0		0		0		0
Amortization of net transition liability			0		0		0		0		0		1
Amortization of actuarial loss			28		19		1		0		14		4
Special termination cost			0		0		0		0		2		0
Other			1		0		0		0		0		0
	Net periodic cost	$	25	$	16	$	3	$	2	$	39	$	23

Defined contribution plan contributions [Table]

	Three months ended September 30				Nine months ended September 30
(in millions)		2012		2011		2012		2011
PEC	$	7	$	6	$	18	$	18
PEF		4		4		11		11

PEF [Member]

Benefit Plans Disclosure [Line Items]

Schedule of Net Benefit Costs [Tables]

PEF
		Qualified					Non-Qualified			Other Post-Retirement
		Pension Plans				Pension Plans				Benefit Plans
(in millions)			2012		2011		2012		2011		2012		2011
Service cost		$	8	$	6	$	0	$	0	$	2	$	1
Interest cost on projected benefit obligation			14		14		1		1		4		4
Expected return on plan assets			(21)		(19)		0		0		0		0
Amortization net transition liability			0		0		0		0		1		1
Amortization of actuarial loss			13		8		0		0		3		2
Special termination costs			0		0		0		0		1		0
	Net periodic cost	$	14	$	9	$	1	$	1	$	11	$	8

PEF
			Qualified				Non-Qualified			Other Post-Retirement
			Pension Plans				Pension Plans				Benefit Plans
(in millions)			2012		2011		2012		2011		2012		2011
Service cost		$	22	$	18	$	0	$	0	$	5	$	3
Interest cost on projected benefit obligation			42		43		2		2		13		13
Expected return on plan assets			(61)		(59)		0		0		(1)		(1)
Amortization of net transition liability			0		0		0		0		2		3
Amortization of actuarial loss			36		25		0		0		9		6
Special termination cost			0		0		0		0		1		0
	Net periodic cost	$	39	$	27	$	2	$	2	$	29	$	24

Defined contribution plan contributions [Table]

	Three months ended September 30				Nine months ended September 30
(in millions)		2012		2011		2012		2011
PEC	$	7	$	6	$	18	$	18
PEF		4		4		11		11