Shareholders' Equity (Stock Options Activity Roll Forward) (Details) (USD $)	6 Months Ended
	Jun. 30, 2011
Stock Options [Member]
Options, Outstanding at beginning of period	44,690,131
Options, Granted	3,755,975
Options, Exercised	(33,198)
Options, Forfeited or expired	(2,609,000)
Options, Outstanding at end of period	45,803,908
Options, Exercisable at end of period	34,303,021
Wtd. Avg. Exercise Price [Member]
Wtd. Avg. Exercise Price, Outstanding at beginning of period	35.06
Wtd. Avg. Exercise Price, Granted	27.73
Wtd. Avg. Exercise Price, Exercised	17.89
Wtd. Avg. Exercise Price, Forfeited or expired	36.30
Wtd. Avg. Exercise Price, Outstanding at end of period	34.40
Wtd. Avg. Exercise Price, Exercisable at end of period	36.38