Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Statement of Cash Flows [Abstract]
Cash and cash equivalents at beginning of year	$ 439,272	$ 746,724
Cash flows from operating activities:
Net income	722,139	563,906
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	137,567	123,683
(Gain) loss on sale of business/interest in properties	8,400	(429,408)
Stock-based compensation and other	15,232	8,425
Equity in net income of unconsolidated investments (net of tax)	(190,592)	(34,509)
Dividends received from unconsolidated investments and nonmarketable securities	156,964	27,420
Pension and postretirement benefit	(8,273)	(8,465)
Pension and postretirement contributions	(7,685)	(20,266)
Unrealized gain on investments in marketable securities	3,061	(2,384)
Loss on early extinguishment of debt	19,219	28,955
Deferred income taxes	39,476	27,708
Working capital changes	(888,036)	7,942
Non-cash transfer of 40% value of construction in progress of Kemerton plant to MRL	96,314	96,185
Other, net	(43,475)	(3,339)
Net cash provided by operating activities	60,311	385,853
Cash flows from investing activities:
Capital expenditures	(502,607)	(396,915)
Proceeds from Divestiture of Businesses, Net of Cash Divested	0	290,467
Sales of marketable securities, net	3,402	4,553
Investments in equity and other corporate investments	(767)	(286)
Net cash used in investing activities	(499,972)	(102,181)
Cash flows from financing activities:
Proceeds from issuance of common stock	0	1,453,888
Repayments of long-term debt and credit agreements	(455,000)	(1,173,823)
Proceeds from borrowings of long-term debt and credit agreements	1,964,216	0
-390601000	(390,601)	(325,316)
Fees related to early extinguishment of debt	(9,767)	(24,877)
Dividends paid to shareholders	(91,894)	(86,637)
Dividends paid to noncontrolling interests	(26,525)	(43,698)
Proceeds from exercise of stock options	855	14,335
Withholding taxes paid on stock-based compensation award distributions	(10,583)	(7,047)
Other	(4,172)	(1,359)
Net cash provided by (used in) financing activities	976,529	(194,534)
Net effect of foreign exchange on cash and cash equivalents	(45,544)	(12,290)
Increase in cash and cash equivalents	491,324	76,848
Cash and cash equivalents at end of period	$ 930,596	$ 823,572