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Debt And Liquidity (Schedule Of Long-Term Debt) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Total $ 2,156,634 $ 339,374
Less: Short-term Debt (106,323) (16,474)
Long-term debt 2,050,311 322,900
Senior Notes [Member]    
Debt Instrument [Line Items]    
Total 0 280,586
Senior Subordinated Notes [Member]    
Debt Instrument [Line Items]    
Total 2,155,883 0
Other Debt [Member]    
Debt Instrument [Line Items]    
Total 751 596
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Revolving Facility $ 0 $ 58,192