Shareholders' Equity (Stock Options Activity Roll Forward) (Details) (USD $)	6 Months Ended
	Jun. 30, 2013
Stock Options [Member]
Options, Outstanding at beginning of period	45,391,074
Options, Granted	403,720
Options, Exercised	(1,165,966)
Options, Forfeited or expired	(4,077,728)
Options, Outstanding at end of period	40,551,100
Options, Exercisable at end of period	33,619,401
Exercisable and expected to vest at March 31	40,013,065
Wtd. Avg. Exercise Price [Member]
Wtd. Avg. Exercise Price, Outstanding at beginning of period	$ 34.15
Wtd. Avg. Exercise Price, Granted	$ 30.08
Wtd. Avg. Exercise Price, Exercised	$ 23.22
Wtd. Avg. Exercise Price, Forfeited or expired	$ 32.69
Wtd. Avg. Exercise Price, Outstanding at end of period	$ 34.57
Wtd. Avg. Exercise Price, Exercisable at end of period	$ 35.88
Weighted-average exercise price, exercisable and expected to vest at end of period	$ 34.66