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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Statement of Cash Flows [Abstract] |  |  |
Cash and cash equivalents at beginning of year | $ 746,724 | $ 613,110 | $ 555,320
Cash flows from operating activities: |  |  |
Net income | 199,942 | 446,615 | 604,357
Adjustments to reconcile net income to cash flows from operating activities: |  |  |
Depreciation and amortization | 254,000 | 231,984 | 213,484
Gain on sale of business/interest in properties, net | (295,971) | (7,168) | 0
Gain on sale of property | 0 | 0 | (14,411)
Stock-based compensation and other | 20,120 | 22,837 | 19,680
Equity in net income of unconsolidated investments (net of tax) | (95,770) | (127,521) | (129,568)
Dividends received from unconsolidated investments and nonmarketable securities | 78,391 | 88,161 | 71,746
Pension and postretirement (benefit) expense | (74,010) | 45,658 | 31,515
Pension and postretirement contributions | (30,253) | (16,434) | (16,478)
Unrealized gain on investments in marketable securities | (3,818) | (4,635) | (2,809)
Loss on early extinguishment of debt | 28,955 | 0 | 4,829
Deferred income taxes | (38,500) | (1,976) | 14,394
Changes in current assets and liabilities, net of effects of acquisitions and divestitures: |  |  |
(Increase) decrease in accounts receivable | (49,295) | 100,118 | (18,220)
(Increase) decrease in inventories | (127,401) | 51,978 | (46,304)
Decrease (increase) in other current assets | 17,411 | 7,902 | (32,941)
Increase (decrease) in accounts payable | 143,939 | (31,519) | (12,234)
Increase (decrease) in accrued expenses and income taxes payable | 127,068 | (215,011) | (4,640)
Non-cash transfer of 40% value of construction in progress of Kemerton plant to MRL | 135,928 | 179,437 | 164,496
Other, net | 53,521 | 28,488 | (127,522)
Net cash provided by operating activities | 344,257 | 798,914 | 719,374
Cash flows from investing activities: |  |  |
Acquisitions, net of cash acquired | 0 | (22,572) | (820,000)
Capital expenditures | (953,667) | (850,477) | (851,796)
Cash proceeds from divestitures, net | 289,791 | 0 | 0
Proceeds from sale of joint venture | 0 | 11,000 | 0
Proceeds from sale of property and equipment | 0 | 0 | 10,356
Sales of marketable securities, net | 3,774 | 903 | 384
Investments in equity and other corporate investments | (6,488) | (2,427) | (2,569)
Net cash used in investing activities | (666,590) | (863,573) | (1,663,625)
Cash flows from financing activities: |  |  |
Proceeds from issuance of common stock | 1,453,888 | 0 | 0
Proceeds from borrowings of other long-term debt | 0 | 452,163 | 1,597,807
Repayments of long-term debt and credit agreements | (1,173,823) | (250,000) | (175,215)
Other borrowings (repayments), net | 60,991 | 137,635 | (126,364)
Fees related to early extinguishment of debt | (24,877) | 0 | (4,419)
Dividends paid to shareholders | (177,853) | (161,818) | (152,204)
Dividends paid to noncontrolling interests | (96,136) | (32,061) | (83,187)
Proceeds from exercise of stock options | 18,392 | 40,437 | 4,814
Withholding taxes paid on stock-based compensation award distributions | (8,140) | (5,143) | (11,031)
Other | (2,230) | (3,952) | (7,514)
Net cash provided by financing activities | 50,212 | 177,261 | 1,042,687
Net effect of foreign exchange on cash and cash equivalents | (35,331) | 21,012 | (40,646)
(Decrease) increase in cash and cash equivalents | (307,452) | 133,614 | 57,790
Cash and cash equivalents at end of year | $ 439,272 | $ 746,724 | $ 613,110

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