Organization and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2012

Disclosure Organization And Summary Of Significant Accounting Policies Tables [Abstract]

Schedule of excise taxes [Tables]

	Three months ended March 31
(in millions)	2012		2011
Progress Energy	$	69	$	73
PEC		26		28
PEF		43		45

Schedule of consolidated variable interest entity [Tables]

(in millions)	March 31, 2012		December 31, 2011
Miscellaneous other property and investments	$	12	$	12
Cash and cash equivalents		1		1