Shareholders' Equity (Narrative) (Details) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Shareholders' Equity
Common stock shares authorized	2,000,000,000	2,000,000,000
Common shares, par value	$ 5	$ 5
Common shares outstanding	696,894,000	694,381,000
Preferred shares authorized	5,000,000	5,000,000
Preferred shares outstanding	0	0