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Pension Plans and Other Postretirement Benefits (Cash Contributions Made And Expected Remaining Contributions For Pension And Postretirement Benefit Plans) (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
Pension Plan [Member] | Domestic Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Actual Cash Contributions $ 55,983
Expected Remaining Cash Contributions 1,328
Pension Plan [Member] | Foreign Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Actual Cash Contributions 4,523
Expected Remaining Cash Contributions 1,529
Other Postretirement Benefits Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Actual Cash Contributions 1,354
Expected Remaining Cash Contributions $ 452