Shares and Stockholders' Equity (Changes In Preferred And Common stock (Number Of Shares)) (Details)	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Changes In Preferred And Common Stock Number Of Shares [Line Items]
Balance as of beginning-of-period					9,532
Balance as of end-of-period	4,164				4,164
Balance as of beginning-of-period					271,402,586
Balance as of end-of-period	264,316,340				264,316,340
Common stock as of end-of-year:
Assuming conversion of preferred stock (in shares)	264,382,964		279,323,083		264,382,964		279,323,083
Diluted basis (in shares)	273,924,900		286,820,300		273,924,900		286,820,300
Series A Preferred Stock [Member]
Changes In Preferred And Common Stock Number Of Shares [Line Items]
Balance as of beginning-of-period	9,532		9,632		9,532		10,072
Conversion of convertible preferred stock (in shares)	(5,368)	[1]		[1]	(5,368)	[1]	(440)	[1]
Balance as of end-of-period	4,164		9,632		4,164		9,632
Common Stock [Member]
Changes In Preferred And Common Stock Number Of Shares [Line Items]
Conversion of convertible preferred stock (in shares)	85,888	[1]		[1]	85,888	[1]	7,040	[1]
Balance as of beginning-of-period	268,457,558		285,412,303		271,402,586		291,319,222
Stock compensation/issued for benefit plans (in shares)	96,740		230,198		524,169		334,395
Retirement/cancellation of shares (in shares)	(4,323,846)		(6,473,530)		(7,696,303)		(12,491,686)
Balance as of end-of-period	264,316,340		279,168,971		264,316,340		279,168,971

[1] Represents the conversion of Series A preferred stock into common stock.