Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Statement of Cash Flows [Abstract]
Cash and cash equivalents at beginning of year	$ 1,499,142	$ 439,272
Cash flows from operating activities:
Net income	2,273,835	1,653,345
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization	285,801	215,280
Loss on sale of interest in properties	0	8,400
Stock-based compensation and other	29,465	24,649
Equity in net income of unconsolidated investments (net of tax)	(1,417,545)	(449,476)
Dividends received from unconsolidated investments and nonmarketable securities	1,939,225	350,895
Pension and postretirement benefit	5,925	(12,299)
Pension and postretirement contributions	(12,243)	(10,929)
Unrealized (gain) loss on investments in marketable securities	(36,740)	3,864
Loss on early extinguishment of debt	0	19,219
Deferred income taxes	(182,764)	77,968
Working capital changes	(1,332,042)	(1,004,236)
Non-cash transfer of 40% value of construction in progress of Kemerton plant to MRL	17,132	115,969
Other, net	(146,509)	(37,047)
Net cash provided by operating activities	1,423,540	955,602
Cash flows from investing activities:
Acquisitions, net of cash acquired	(43,207)	0
Capital expenditures	(1,465,193)	(815,934)
(Purchases) sales of marketable securities, net	(205,952)	3,132
Investments in equity investments and nonmarketable securities	(1,279)	(507)
Net cash used in investing activities	(1,715,631)	(813,309)
Cash flows from financing activities:
Repayments of long-term debt and credit agreements	0	(455,000)
Proceeds from borrowings of long-term debt and credit agreements	300,000	1,964,216
Other debt borrowings (repayments), net	172,791	(391,067)
Fees related to early extinguishment of debt	0	(9,767)
Dividends paid to shareholders	(140,251)	(138,165)
Dividends paid to noncontrolling interests	(79,393)	(44,208)
Proceeds from exercise of stock options	117	1,590
Withholding taxes paid on stock-based compensation award distributions	(26,166)	(12,150)
Other	(191)	(4,198)
Net cash provided by financing activities	226,907	911,251
Net effect of foreign exchange on cash and cash equivalents	167,710	(110,013)
Increase in cash and cash equivalents	102,526	943,531
Cash and cash equivalents at end of period	$ 1,601,668	$ 1,382,803