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Shareholders' Equity Details 2 (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Stockholders' Equity Note [Abstract]      
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net $ (1,034) $ 2,764  
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net 6,756 (12,529)  
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net (5,722) 9,765  
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax (987) (1,504)  
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax (4,735) (8,261) $ 1,257
Amortization of actuarial (gains) losses and plan amendments and prior service cost 23,925 13,018  
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax, Portion Attributable to Parent 7,195 3,509  
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax $ 16,730 $ 9,509