Shares and Stockholders' Equity (Changes In Common stock (Number Of Shares)) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 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	250,918,893		250,918,893
Common stock as of end-of-period:
Basic basis	250,918,893	260,831,708	250,918,893	260,831,708
Diluted basis	254,126,732	267,622,578	254,126,732	267,622,578
Common Stock [Member]
Changes In Preferred And Common Stock Number Of Shares [Line Items]
Balance as of beginning-of-period	252,928,502	263,682,162	256,551,440	262,896,701
Common Stock Issued For Exercise Of Warrants	33,510	54,714	980,436	3,099,479
Stock compensation/issued for benefit plans	515,481	171,293	1,988,882	899,808
Retirement/cancellation of shares	(2,558,600)	(3,076,461)	(8,601,865)	(6,064,280)
Balance as of end-of-period	250,918,893	260,831,708	250,918,893	260,831,708