Retirement Benefits (Components Of Net Periodic Benefit Cost For Defined Benefit Plans And Other Postretirement Plans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,759	$ 1,665	$ 1,551
Interest cost	4,506	4,525	4,375
Expected return on plan assets	(4,755)	(4,396)	(3,505)
Net amortization	4,855	4,401	5,299
Net periodic benefit cost	6,365	6,195	7,720
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,078	719	824
Interest cost	2,320	2,148	2,122
Expected return on plan assets	(1,117)	(945)	(780)
Net amortization	442	302	370
Net periodic benefit cost	2,723	2,224	2,536
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	691	528	468
Interest cost	1,035	1,008	1,018
Net amortization	(156)	(370)	(385)
Net periodic benefit cost	$ 1,570	$ 1,166	$ 1,101