| In millions, except per share items | Jun-30-23 | Mar-31-23 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 8-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| |
| Cash flows from operating activities: | | | | | | | | |
| Net income | 676.4 | 1,276.7 | 931.2 | 440.6 | 281.5 | 10.5 | -374.4 | 446.2 |
| Adjustments to reconcile net income to cash flows from operating activities: | | | | | | | | |
| Depreciation and amortization | 93.1 | 87.3 | 77.7 | 71.0 | 66.6 | 68.2 | 62.1 | 61.4 |
| (Gain) loss on sale of business/interest in properties | | | | | 8.4 | 428.4 | 1.0 | -429.4 |
| Stock-based compensation and other | 9.5 | 10.5 | 9.4 | 11.0 | 4.2 | 5.5 | 6.2 | 5.9 |
| Equity in net income of unconsolidated investments (net of tax) | -947.2 | | -258.9 | -128.2 | -62.4 | 62.2 | -27.7 | -18.0 |
| Dividends received from unconsolidated investments and nonmarketable securities | 1,079.4 | | 193.9 | 117.8 | 39.2 | 35.0 | 16.0 | 22.5 |
| Pension and postretirement benefit | 3.9 | | -4.0 | -4.0 | -4.3 | -61.6 | -4.0 | -4.2 |
| Pension and postretirement contributions | -8.6 | | -3.2 | -3.8 | -3.9 | -6.1 | -3.9 | -4.9 |
| Unrealized (gain) loss on investments in marketable securities | -61.4 | | 0.8 | 1.6 | 1.5 | 0.1 | -1.5 | -0.6 |
| Loss on early extinguishment of debt | | | | 19.2 | | | | 1.2 |
| Deferred income taxes | -158.8 | 14.1 | 38.5 | 11.7 | 27.7 | 0.4 | -66.6 | 47.1 |
| Working capital changes | -1,155.4 | | -116.2 | -668.6 | -219.4 | | 448.5 | 57.1 |
| Non-cash transfer of 40% value of construction in progress of Kemerton plant to MRL | 11.6 | | 19.7 | 31.2 | 65.1 | | 39.7 | 53.0 |
| Other, net | -136.4 | | 6.4 | -45.4 | 1.9 | 47.4 | 9.4 | -9.2 |
| Net cash provided by operating activities | 73.7 | 721.0 | 895.3 | -145.9 | 206.2 | -146.3 | 104.7 | 227.9 |
| |
| Cash flows from investing activities: | | | | | | | | |
| Acquisitions, net of cash acquired | -8.2 | | | | | | | |
| Capital expenditures | -919.3 | | -313.3 | -270.9 | -231.7 | -300.9 | -255.8 | -217.2 |
| Investments in equity and other corporate investments | -1.2 | | 0.3 | -0.6 | -0.1 | -6.2 | | |
| Net cash used in investing activities | -513.7 | -539.0 | -313.3 | -271.9 | -228.1 | -307.8 | -256.6 | 72.5 |
| |
| Cash flows from financing activities: | | | | | | | | |
| Repayments of long-term debt and credit agreements | | | | -455.0 | | | | 1.2 |
| Proceeds from borrowings of long-term debt and credit agreements | 300.0 | | | 1,684.2 | 280.0 | | | |
| Other debt repayments, net | -1.5 | | -0.5 | -224.0 | -166.6 | 388.3 | -2.0 | -0.2 |
| Fees related to early extinguishment of debt | | | | | | | | |
| Dividends paid to noncontrolling interests | | -53.1 | -17.7 | -26.5 | | -35.0 | -17.5 | -17.5 |
| Proceeds from exercise of stock options | | 0.1 | 0.7 | 0.4 | 0.4 | 2.2 | 1.9 | 13.2 |
| Withholding taxes paid on stock-based compensation award distributions | -24.9 | | -1.6 | -0.2 | -10.4 | -0.4 | -0.7 | -0.2 |
| Other | | | 0.0 | -4.0 | -0.1 | 1.4 | 0.0 | -1.1 |
| Net cash provided by financing activities | 245.9 | -118.7 | -65.3 | 918.9 | 57.6 | 308.6 | -63.9 | -51.3 |
| Net effect of foreign exchange on cash and cash equivalents | 231.4 | | -64.5 | -33.9 | -11.6 | | -12.7 | 4.6 |