Consolidated Balance Sheet (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Trade receivables allowances	$ 10,703	$ 10,493
Common stock, par value, in dollars per share	$ 0.125	$ 0.125
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	115,761,840	115,761,840
Common stock, shares outstanding	81,221,844	81,384,246
Treasury stock, shares at cost	34,539,996	34,377,594