Contingencies (Details) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2012 USD ($)	Apr. 02, 2011 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 Huntsville Site [Member] USD ($)	Dec. 31, 2012 Groundwater Removal [Member] Norco Site [Member] USD ($)	Dec. 31, 2012 Project Management [Member] Norco Site [Member] USD ($)	Dec. 31, 2012 Investigation Report [Member] Huntsville Site [Member] USD ($)	Dec. 31, 2012 Investigation Report [Member] Norco Site [Member] USD ($)	Dec. 31, 2012 Tekelec Matter [Member] EUR (€)
Site Contingency [Line Items]
Litigation Settlement, Gross			$ 110,000
Settlement of legal matters			79,158	(5,875)	0
Settlement of legal matters, net of tax	48,623	(3,609)	48,623	(3,609)
Net of Tax, Per Share Related to Litigation Settlement Per Share Basic	$ 0.46		$ 0.45
Net of Tax, Per Share Related to Litigation Settlement Per Share Diluted	$ 0.45		$ 0.44
Net of Tax, Per Share Related to Litigation Settlement Per Share Basic and Diluted		$ 0.03		$ 0.03
Recorded Third-Party Environmental Recoveries Receivable	4,375		4,375
Environmental Remediation Expense To Date						4,000	12,000	31,000
Additional Expected Project Expenditures Low Estimate						3,000	17,200		500
Additional Expected Project Expenditures High Estimate						4,000	23,700	200	750	200
Loss Contingency, Range of Possible Loss, Maximum											11,333
Loss Contingency Damages Sought Value											3,742
Loss Contingency, Expenses Sought, Value											€ 312