Shares and Stockholders' Equity (Changes In Common stock (Number Of Shares)) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Changes In Preferred And Common Stock Number Of Shares [Line Items]
Balance as of beginning-of-period			256,551,440
Balance as of end-of-period	247,464,931		247,464,931
Common stock as of end-of-period:
Basic basis	247,464,931	259,786,446	247,464,931	259,786,446
Diluted basis	251,220,934	265,527,521	251,220,934	265,527,521
Common Stock [Member]
Changes In Preferred And Common Stock Number Of Shares [Line Items]
Balance as of beginning-of-period	250,918,893	260,831,708	256,551,440	262,896,701
Common Stock Issued For Exercise Of Warrants	188,530	1,199,609	1,168,966	4,299,088
Stock compensation/issued for benefit plans	40,031	601,359	2,028,913	1,501,167
Retirement/cancellation of shares	(3,682,523)	(2,846,230)	(12,284,388)	(8,910,510)
Balance as of end-of-period	247,464,931	259,786,446	247,464,931	259,786,446