Accumulated Other Comprehensive Income (Loss) - Schedule of reclassifications (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss)
Interest expense	$ (14,821)	$ (20,461)	$ (23,972)
Net loss resulting from early retirement of debt	1,126	14,420
Interest and investment income	17,259	7,299	628
Total before tax	551,552	1,078,988	339,447
Provision for (benefit from) income taxes	87,514	(251,926)	1,874
Net Income (Loss)	464,038	1,330,914	$ 337,573
Pension, postretirement and other post-employment benefits
Accumulated Other Comprehensive Income (Loss)
Provision for (benefit from) income taxes	1,662	(12,548)
Available-for-sale securities
Accumulated Other Comprehensive Income (Loss)
Provision for (benefit from) income taxes	16	(35)
Reclassification out of Accumulated Other Comprehensive Income | Derivative instruments
Accumulated Other Comprehensive Income (Loss)
Interest expense	0	(112)
Net loss resulting from early retirement of debt	0	(1,428)
Provision for (benefit from) income taxes	0	0
Net Income (Loss)	0	(1,540)
Reclassification out of Accumulated Other Comprehensive Income | Pension, postretirement and other post-employment benefits
Accumulated Other Comprehensive Income (Loss)
Amortization of actuarial gains (losses), net	(11,208)	(2,193)
Amortization of prior service credits	98	147
Pension settlement	4,552	771
Total before tax	15,858	3,111
Provision for (benefit from) income taxes	1,662	674
Net Income (Loss)	14,196	2,437
Reclassification out of Accumulated Other Comprehensive Income | Available-for-sale securities
Accumulated Other Comprehensive Income (Loss)
Interest and investment income	(30)	(182)
Provision for (benefit from) income taxes	(16)	(39)
Net Income (Loss)	$ (14)	$ (143)