Components of Pension and Other Post-employment Benefit Plans Net Periodic Benefit Costs - Components of Net Periodic Benefit (Credit) Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Pension Benefits
Defined Contribution Plan Disclosure [Line Items]
Service Cost	$ 305	$ 302	$ 609	$ 604
Interest Cost	6,757	4,134	13,514	8,269
Expected Return on Plan Assets	(9,868)	(9,319)	(19,735)	(18,638)
Amortization of Prior Service Credits	0	0	0	0
Amortization of Actuarial Loss	185	761	370	1,519
Net Periodic Benefit (Credit) Cost	(2,621)	(4,122)	(5,242)	(8,246)
Other Post-Employment Benefits
Defined Contribution Plan Disclosure [Line Items]
Service Cost	0	0	0	0
Interest Cost	3,261	1,975	6,522	3,949
Expected Return on Plan Assets	0	0	0	0
Amortization of Prior Service Credits	(602)	(602)	(1,203)	(1,203)
Amortization of Actuarial Loss	0	879	0	1,758
Net Periodic Benefit (Credit) Cost	$ 2,659	$ 2,252	$ 5,319	$ 4,504