Common Equity (Common Stock And Treasury Stock Shares Activity) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Common Stock [Member]
Common Stock And Treasury Stock [Roll Forward]
Beginning Balance				254,752,788
Ending Balance	254,752,788	254,752,788	254,752,788	254,752,788
Treasury Stock [Member]
Common Stock And Treasury Stock [Roll Forward]
Beginning Balance	76,381,936	76,945,239	78,396,988
Repurchases	2,154,490	0	0
Employee Stock-Based Compensation Plans	(3,019,475)	(557,734)	(1,446,305)
Directors' Plan	(4,872)	(5,569)	(5,444)
Ending Balance	75,512,079	76,381,936	76,945,239