CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Preferred stock, par value
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	1,265,000	1,265,000
Preferred stock, shares outstanding	1,265,000	1,265,000
Preferred stock, liquidation preference per share	$ 1,000	$ 1,000
Cumulative preferred stock interest rate	6.00%	6.00%
Common stock, par value	$ 0.625	$ 0.625
Common stock, shares authorized	860,000,000	860,000,000
Common stock, shares issued	392,345,358	385,249,885
Treasury stock, shares	1,072,757	1,132,242