Benefit Plans Benefit Plans (Detail 2) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Non-current Assets for Plan Benefits	$ 0	$ 0
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(58,588)	(28,300)
Accumulated Other Comprehensive Income (Loss), before Tax	89,956	63,958
Net amount recognized	31,368	35,658
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Non-current Assets for Plan Benefits	52,660	107,173
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(105,037)	(101,078)
Accumulated Other Comprehensive Income (Loss), before Tax	95,686	17,366
Net amount recognized	43,309	23,461
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Non-current Assets for Plan Benefits	0	0
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(13,257)	(14,608)
Accumulated Other Comprehensive Income (Loss), before Tax	(9,635)	(8,814)
Net amount recognized	$ (22,892)	$ (23,422)