Pension Plans And Other Postretirement Benefits (Domestic And Foreign Pension And Postretirement Defined Benefit Plans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Total net periodic pension and postretirement benefit cost	$ 10,024	$ 6,463
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	3,173	2,932
Interest cost	8,213	8,076
Expected return on assets	(11,630)	(12,119)
Amortization of prior service benefit	(261)	(245)
Amortization of net loss	9,104	6,493
Total net periodic benefit cost	8,599	5,137
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	50	125
Interest cost	850	845
Expected return on assets	(125)	(111)
Amortization of prior service benefit	(25)	(99)
Amortization of net loss	675	566
Total net periodic benefit cost	$ 1,425	$ 1,326