Consolidated Statements Of Equity (USD $) In Millions, except Share data		Total	Common Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Translation Adjustment [Member]	Accumulated Net Gain Loss From Designated Or Qualifying Cash Flow Hedges [Member]	Other Equity [Member]	Accumulated Defined Benefit Plans Adjustment [Member]	Parent [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2009		$ 21,886	$ 1	$ 20,661	$ 1,460	$ 17	$ (22)	$ (31)	$ (336)	$ 21,750	$ 136
Balance (in shares) at Dec. 31, 2009		436,000,000
Net income		1,323			1,320					1,320	3
Other comprehensive income (loss), net of tax		373				80	4	14	276	374	(1)
Total comprehensive income		1,696
Common stock issuances, including dividend reinvestment and employee benefits (in shares)		7,000,000
Common stock issuances, including dividend reinvestment and employee benefits		362	0	362						362
Common stock dividends		(1,284)			(1,284)					(1,284)
Changes in noncontrolling interest in subsidiaries		(7)									(7)	[1]
Distributions to noncontrolling interests		10
Balance at Dec. 31, 2010		22,653	1	21,023	1,496	97	(18)	(17)	(60)	22,522	131
Balance (in shares) at Dec. 31, 2010		443,000,000
Net income		1,714			1,706					1,706	8
Other comprehensive income (loss), net of tax		(243)				(142)	(53)	8	(49)	(236)	(7)
Total comprehensive income		1,471
Common stock issuances, including dividend reinvestment and employee benefits (in shares)		2,000,000
Common stock issuances, including dividend reinvestment and employee benefits		109		109						109
Common stock dividends		(1,329)			(1,329)					(1,329)
Changes in noncontrolling interest in subsidiaries		(39)									(39)	[1]
Distributions to noncontrolling interests		26
Balance at Dec. 31, 2011		22,865	1	21,132	1,873	(45)	(71)	(9)	(109)	22,772	93
Balance (in shares) at Dec. 31, 2011		445,000,000
Net income		1,782			1,768					1,768	12
Net Income (Loss) Available to Common Stockholders	[2]	1,780
Other comprehensive income (loss), net of tax		(76)				(71)	(29)	9	19	(72)	(4)
Total comprehensive income		1,706
Common stock issuances, including dividend reinvestment and employee benefits (in shares)		1,000,000
Common stock issuances, including dividend reinvestment and employee benefits		76		76						76
Common stock issued in connection with the Progress Energy Merger (in shares)		258,000,000
Common stock issued in connection with the Progress Energy Merger		18,071		18,071						18,071
Common stock dividends		(1,752)			(1,752)					(1,752)
Changes in noncontrolling interest in subsidiaries		(17)									(17)	[1]
Deconsolidation of DS Cornerstone, LLC		(82)									(82)	[3]
Contribution from noncontrolling interest in DS Cornerstone, LLC		76									76	[3]
Distributions to noncontrolling interests		23
Net Income attributable to Preferred Shareholders		2
Balance at Dec. 31, 2012		$ 40,941	$ 1	$ 39,279	$ 1,889	$ (116)	$ (100)	$ 0	$ (90)	$ 40,863	$ 78
Balance (in shares) at Dec. 31, 2012		704,000,000

[1] Includes $23 million, $26 million and $10 million in cash distributions to noncontrolling interests in 2012, 2011 and 2010, respectively.

[2] For the year ended December 31, 2012, consolidated net income of $1,782 million includes $2 million attributable to preferred shareholders of subsidiaries. Income attributable to preferred shareholders of subsidiaries is not a component of total equity and is excluded from the table above.

[3] Refer to Note 2 for further information on the deconsolidation of DS Cornerstone, LLC.