| In millions, except per share items | Jun-30-23 | Jun-30-22 | Mar-31-22 | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | | | | 23 | -143 | -161 | -127 | -102 |
| Depreciation and amortization | | | | 164 | 182 | 200 | 208 | 288 |
| Asset impairment charges | | | | 8 | 118 | 117 | | 111 |
| Stock-based compensation | | | | 1 | 1 | 1 | 0 | 7 |
| Change in working capital [+] | | | | -187 | -70 | -39 | 14 | 182 |
| Accounts receivable | | | | -213 | -179 | -40 | 0 | 84 |
| Inventories | | | | -45 | -2 | 4 | 0 | 42 |
| Income taxes | | | | 51 | 32 | 25 | 60 | 18 |
| Other | | | | 20 | 79 | -28 | -46 | 38 |
| Other operating activities | | | | 295 | 258 | 238 | 205 | -33 |
| Cash from operations | | | | 304 | 346 | 356 | 411 | 436 |
| |
| Capital expenditures [+] | | | | 114 | 155 | 186 | 175 | -228 |
| Purchases of property and equipment | | | | 114 | 155 | 186 | 175 | -228 |
| Sales of property and equipment | | | | 4 | 1 | | | |
| Acquisitions | | | | | | | 30 | |
| Other cash from investing | | | | | | 490 | -407 | |
| Cash from investing | | | | 668 | 706 | 706 | -202 | -258 |
| |
| Repurchase of common stock, net | | | | -238 | | -223 | | |
| Other cash from financing | | | | | -663 | -351 | 94 | 156 |
| Cash from financing | | | | -848 | -835 | -548 | 35 | -61 |
| |
| Free cash flow | | | | 418 | 501 | 542 | 586 | 208 |
| Per share (diluted) | | | | $7.96 | $9.34 | $9.88 | $10.55 | $3.65 |
| |
| Cash paid for interest | | | | 61 | 64 | 53 | 52 | 51 |
| Cash paid for income taxes | | | | 21 | 3 | -4 | -22 | -21 |