CONDENSED CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Preferred Stock, Par or Stated Value Per Share	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	600,000,000	600,000,000
Common stock, shares issued	166,390,256	166,125,215
Common stock, shares outstanding	166,390,256	166,125,215