Restructuring (Schedule Of Restructuring Accruals Expenses By Segment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 3,543	$ 6,878
Restructuring costs	12,314	11,095	12,079
Payments/utilization	(9,982)	(14,430)
Ending Balance	5,875	3,543	6,878
2011 Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs	12,314
Payments/utilization	(6,439)
Ending Balance	5,875
2009 Initiatives [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	3,543	6,878
Restructuring costs		11,095
Payments/utilization	(3,543)	(14,430)
Ending Balance		$ 3,543