Other (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Other general (income) expense - net
Provisions for environmental matters - net	$ (702,000)	$ 2,785,000	$ 4,650,000	$ 4,722,000
Loss (gain) on disposition of assets	10,000	2,681,000	(4,399,000)	2,922,000
Adjustments to prior provisions for qualified exit costs	(6,000)	(341,000)	223,000	(613,000)
Other general (income) expense - net	(698,000)	5,125,000	474,000	7,031,000
Other income - net
Dividend and royalty income	(1,660,000)	(1,527,000)	(2,985,000)	(2,493,000)
Net expense from financing activities	1,826,000	2,839,000	3,949,000	4,571,000
Foreign currency related losses (gains)	1,605,000	(8,376,000)	2,919,000	(2,374,000)
Other income	(5,019,000)	(2,816,000)	(8,336,000)	(4,924,000)
Other expense	3,191,000	325,000	4,444,000	2,463,000
Other income - net	(57,000)	(9,555,000)	(9,000)	(2,757,000)
Other (Textuals) [Abstract]
Maximum amount for item in other income or other expense	$ 1,000,000		$ 1,000,000