Benefit Plans Next Year Recognized OCI Amount (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of Net Prior Service Cost (Credit)	$ (6,979)
Amortization of Net Gains (Losses)	25,244
Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	18,265
Foreign Plan [Member] | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of Net Prior Service Cost (Credit)	(6,904)
Amortization of Net Gains (Losses)	22,694
Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	15,790
UNITED STATES | Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of Net Prior Service Cost (Credit)	0
Amortization of Net Gains (Losses)	2,578
Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	2,578
UNITED STATES | Other Postretirement Benefits Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of Net Prior Service Cost (Credit)	(75)
Amortization of Net Gains (Losses)	(28)
Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	$ (103)