Employee Benefit Plans (Assumptions Used For Pension Benefits Accounting) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Qualified Pension Plans [Member]
Benefit Obligations [Abstract]
Discount rate	4.70%	4.10%	5.10%
Salary increase (graded by age)	4.40%	4.30%	4.40%
Net Periodic Benefit Cost [Abstract]
Discount rate	4.10%		5.00%
Salary increase	4.30%	4.40%	4.10%
Expected long-term rate of return on plan assets	7.75%	8.00%	8.25%
Qualified Pension Plans [Member] | Minimum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		4.60%
Qualified Pension Plans [Member] | Maximum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		5.10%
Qualified Pension Plans [Member] | Progress Energy [Member]
Benefit Obligations [Abstract]
Discount rate	4.70%	4.10%	4.75%
Salary increase (graded by age)	4.00%	4.00%	4.00%
Net Periodic Benefit Cost [Abstract]
Discount rate	4.10%		5.55%
Salary increase	4.00%	4.00%	4.50%
Expected long-term rate of return on plan assets	7.75%		8.50%
Qualified Pension Plans [Member] | Progress Energy [Member] | Minimum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		4.60%
Expected long-term rate of return on plan assets		8.00%
Qualified Pension Plans [Member] | Progress Energy [Member] | Maximum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		4.75%
Expected long-term rate of return on plan assets		8.25%
Non-Qualified Pension Plans [Member]
Benefit Obligations [Abstract]
Discount rate	4.70%	4.10%	5.10%
Salary increase (graded by age)	4.40%	4.30%	4.40%
Net Periodic Benefit Cost [Abstract]
Discount rate	4.10%		5.00%
Salary increase	4.30%	4.40%	4.10%
Non-Qualified Pension Plans [Member] | Minimum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		4.60%
Non-Qualified Pension Plans [Member] | Maximum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		5.10%
Non-Qualified Pension Plans [Member] | Progress Energy [Member]
Benefit Obligations [Abstract]
Discount rate	4.70%	4.10%	4.80%
Salary increase (graded by age)			5.25%
Net Periodic Benefit Cost [Abstract]
Discount rate	4.10%		5.60%
Salary increase			5.25%
Non-Qualified Pension Plans [Member] | Progress Energy [Member] | Minimum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		4.60%
Non-Qualified Pension Plans [Member] | Progress Energy [Member] | Maximum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		4.80%
Other Post-Retirement Benefit Plans [Member]
Benefit Obligations [Abstract]
Discount rate	4.70%	4.10%	5.10%
Net Periodic Benefit Cost [Abstract]
Discount rate	4.10%		5.00%
Expected long-term rate of return on plan assets	7.75%
Assumed tax rate	35.00%	35.00%	35.00%
Other Post-Retirement Benefit Plans [Member] | Minimum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		4.60%
Expected long-term rate of return on plan assets		5.20%	5.36%
Other Post-Retirement Benefit Plans [Member] | Maximum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		5.10%
Expected long-term rate of return on plan assets		8.00%	8.25%
Other Post-Retirement Benefit Plans [Member] | Progress Energy [Member]
Benefit Obligations [Abstract]
Discount rate	4.70%	4.10%	4.85%
Net Periodic Benefit Cost [Abstract]
Discount rate	4.10%		5.70%
Expected long-term rate of return on plan assets			5.00%
Other Post-Retirement Benefit Plans [Member] | Progress Energy [Member] | Minimum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		4.60%
Other Post-Retirement Benefit Plans [Member] | Progress Energy [Member] | Maximum [Member]
Net Periodic Benefit Cost [Abstract]
Discount rate		4.85%
Expected long-term rate of return on plan assets		5.00%