Benefit Plans Benefit Plans (Detail 4) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial losses (gains)	$ 31,101
Prior service costs	0
Amortization of Gains, Losses and Other Expenses	(5,103)
Amortization of Prior service costs in Net Periodic Benefits Costs, before tax	0
Defined Benefit Plans, Impact of FX on Current Year Change in OCI	0
Defined Benefit Plan, Changes in OCI Arising During the Period	25,998
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial losses (gains)	82,427
Prior service costs	0
Amortization of Gains, Losses and Other Expenses	(845)
Amortization of Prior service costs in Net Periodic Benefits Costs, before tax	1,271
Defined Benefit Plans, Impact of FX on Current Year Change in OCI	(4,533)
Defined Benefit Plan, Changes in OCI Arising During the Period	78,320
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial losses (gains)	(1,971)
Prior service costs	457
Amortization of Gains, Losses and Other Expenses	693
Amortization of Prior service costs in Net Periodic Benefits Costs, before tax	0
Defined Benefit Plans, Impact of FX on Current Year Change in OCI	0
Defined Benefit Plan, Changes in OCI Arising During the Period	$ (821)