Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Statement of Cash Flows [Abstract]
Cash and cash equivalents at beginning of year	$ 889,900	$ 1,499,142
Cash flows from operating activities:
Net (loss) income	(159,947)	1,953,142
Adjustments to reconcile net (loss) income to cash flows from operating activities:
Depreciation and amortization	262,030	180,356
Non-cash capital project assets write-off	276,013	0
Stock-based compensation and other	15,439	20,017
Equity in net income of unconsolidated investments (net of tax)	(467,378)	(947,239)
Dividends received from unconsolidated investments and nonmarketable securities	270,926	1,079,439
Pension and postretirement expense	2,529	3,933
Pension and postretirement contributions	(9,428)	(8,632)
Realized loss on investments in marketable securities	33,746	0
Unrealized loss (gain) on investments in marketable securities	23,777	(61,434)
Deferred income taxes	(129,087)	(144,720)
Working capital changes	460,937	(1,155,408)
Other, net	(118,711)	(124,767)
Net cash provided by operating activities	460,846	794,687
Cash flows from investing activities:
Acquisitions, net of cash acquired	0	(8,240)
Capital expenditures	(1,026,936)	(919,295)
Sales (purchases) of marketable securities, net	82,578	(123,979)
Investments in equity investments and nonmarketable securities	(148)	(1,192)
Net cash used in investing activities	(944,506)	(1,052,706)
Cash flows from financing activities:
Proceeds from issuance of mandatory convertible preferred stock, net of issuance costs	2,236,750	0
Repayments of long-term debt and credit agreements	(56,453)	0
Proceeds from borrowings of long-term debt and credit agreements	56,453	300,000
Other debt repayments, net	(627,390)	(1,500)
Dividends paid to common shareholders	(93,916)	(93,317)
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	(39,376)	0
Dividends paid to noncontrolling interests	(18,137)	(53,145)
Proceeds from exercise of stock options	86	81
Withholding taxes paid on stock-based compensation award distributions	(10,677)	(24,910)
Other	(2,758)	0
Net cash provided by financing activities	1,444,582	127,209
Net effect of foreign exchange on cash and cash equivalents	(20,595)	231,406
Increase in cash and cash equivalents	940,327	100,596
Cash and cash equivalents at end of period	$ 1,830,227	$ 1,599,738