CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Trade receivables allowances	$ 6,791	$ 5,831
Common stock, par value	$ 12.5	$ 12.5
Common stock, authorized	500,000,000	500,000,000
Common stock, issued	115,761,840	115,761,840
Common stock, outstanding	81,459,723	80,921,208
Treasury stock, shares at cost	34,302,117	34,840,632