CONDENSED CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
CONDENSED CONSOLIDATED BALANCE SHEET
Common stock, Authorized shares	480,000,000	480,000,000
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, Issued shares	210,749,418	210,429,731
Treasury stock, shares	404,400	404,400