Shareholders' Equity (Stock Options Activity Roll Forward) (Details) (USD $)	9 Months Ended
	Sep. 30, 2012
Stock Options [Member]
Options, Outstanding at beginning of period	45,384,554
Options, Granted	4,683,073
Options, Exercised	(1,208,481)
Options, Forfeited or expired	(3,258,133)
Options, Outstanding at end of period	45,601,013
Options, Exercisable at end of period	34,274,139
Number of options expected to vest at end of period	44,420,189
Wtd. Avg. Exercise Price [Member]
Wtd. Avg. Exercise Price, Outstanding at beginning of period	34.42
Wtd. Avg. Exercise Price, Granted	30.09
Wtd. Avg. Exercise Price, Exercised	23.56
Wtd. Avg. Exercise Price, Forfeited or expired	36.46
Wtd. Avg. Exercise Price, Outstanding at end of period	34.12
Wtd. Avg. Exercise Price, Exercisable at end of period	36.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price at end of period	34.27