Retirement Benefits (Pension Expenses) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Defined Benefit Plan Disclosure [Line Items]
Loss due to settlements and curtailments and special terminations			$ 3,583
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	975	1,016	2,702	2,836
Interest cost on projected benefit obligation	6,266	6,164	18,280	18,143
Expected return on plan assets	(6,264)	(6,026)	(18,803)	(18,110)
Net amortization and deferrals	3,270	1,958	8,915	5,581
Loss due to settlements and curtailments and special terminations			444
Total postretirement benefit expense	4,247	3,112	11,538	8,450
Defined contribution and other retirement plans	675	1,742	4,333	5,479
Total pension expense	4,922	4,854	15,871	13,929
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	2,601	2,448	7,825	7,642
Interest cost on projected benefit obligation	8,289	8,506	25,333	25,518
Expected return on plan assets	(11,141)	(10,710)	(33,830)	(32,149)
Net amortization and deferrals	1,294	1,345	3,999	4,034
Loss due to settlements and curtailments and special terminations		63	3,877	126
Total postretirement benefit expense	1,043	1,652	7,204	5,171
Defined contribution and other retirement plans	1,065	985	3,852	3,182
Total pension expense	$ 2,108	$ 2,637	$ 11,056	$ 8,353