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Pension And Postretirement Benefits (Summary Of Benefit Obligations, Fair Value Of Plan Assets And Funded Status) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]    
Change in plan assets, Fair value of plan assets at end of year $ 678,250 $ 661,319
Pension Benefits [Member]
   
Defined Benefit Plan Disclosure [Line Items]    
Change in benefit obligation Beginning of year 674,136 641,033
Change in benefit obligation, Service cost 11,710 10,883
Change in benefit obligation, Interest cost 38,163 36,301
Change in benefit obligation, Plan participants' contributions 1,389 1,328
Change in benefit obligation, Amendments 177  
Change in benefit obligation, Actuarial loss 96,558 18,231
Change in benefit obligation, Settlement (123) (10,919)
Change in benefits paid (31,911) (32,508)
Change in benefit obligation, Foreign currency exchange impact (2,777) (8,974)
Change in benefit obligation, Acquisition/divestitures/curtailment   18,761
Change in benefit obligation, Adjustment for expenses/tax contained in service cost (730)  
Change in benefit obligation at end of year 786,592 674,136
Change in plan assets, Fair value of plan assets at beginning of year 661,319 566,882
Change in plan assets, Actual return on plan assets 3,192 75,823
Change in plan assets, Foreign currency exchange impact (2,059) (5,977)
Change in plan assets, Employer contributions 47,495 42,439
Change in plan assets, Acquisition/transferred asset (1,056) 24,251
Change in plan assets, Plan participants' contributions 1,389 1,328
Change in plan assets, Settlement (119) (10,919)
Change in plan assets, Fair value of plan assets at end of year 678,250 661,319
Change in plan assets, Funded status (108,342) (12,817)
Postretirement Benefits [Member]
   
Defined Benefit Plan Disclosure [Line Items]    
Change in benefit obligation Beginning of year 13,108 15,025
Change in benefit obligation, Service cost 121 114
Change in benefit obligation, Interest cost 588 745
Change in benefit obligation, Amendments   (1,598)
Change in benefit obligation, Actuarial loss 129 536
Change in benefits paid (1,374) (1,735)
Change in benefit obligation, Foreign currency exchange impact (10) 21
Change in benefit obligation at end of year 12,562 13,108
Change in plan assets, Funded status $ (12,562) $ (13,108)