| In millions, except per share items | Sep-30-21 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 | Jun-30-20 | Jun-05-20 | Mar-31-20 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 8-K | 10-Q |
| Net income | 17.0 | 28.0 | -31.0 | -42.0 | -8.0 | -107.0 | -107.0 | -21.0 |
| Depreciation and amortization [+] | 34.0 | 37.0 | 38.0 | 39.0 | 41.0 | 46.0 | | 45.0 |
| Depreciation | 33.0 | 37.0 | 38.0 | 38.0 | 39.0 | 42.0 | | 40.0 |
| Amortization of intangible assets | 1.0 | | | 1.0 | 2.0 | 4.0 | | 5.0 |
| Asset impairment charges | 4.0 | | | | | 56.0 | | -2.0 |
| Stock-based compensation | 2.0 | 3.0 | 2.0 | 2.0 | 3.0 | 3.0 | | 2.0 |
| Deferred taxes | | | | -4.0 | -2.0 | | | |
| Change in working capital [+] | 5.0 | 10.0 | 4.0 | 14.0 | -4.0 | -11.0 | | 4.0 |
| Accounts receivable | -1.0 | 2.0 | | 14.0 | -8.0 | | | 2.0 |
| Other current assets | 4.0 | 1.0 | 5.0 | 3.0 | 4.0 | 2.0 | | -2.0 |
| Other | 2.0 | 7.0 | -1.0 | -3.0 | | -13.0 | | 4.0 |
| Other operating activities | -29.0 | -45.0 | -10.0 | -26.0 | -31.0 | -12.0 | | -23.0 |
| Cash from operations | 33.0 | 33.0 | 3.0 | -17.0 | -1.0 | -25.0 | | 5.0 |
| |
| Capital expenditures [+] | -5.0 | -5.0 | -3.0 | -6.0 | -4.0 | -5.0 | | -9.0 |
| Purchases of property and equipment | -5.0 | -5.0 | -3.0 | -6.0 | -4.0 | -5.0 | | -9.0 |
| Sales of property and equipment | 96.0 | 143.0 | 42.0 | 48.0 | 97.0 | 29.0 | | 100.0 |
| Other cash from investing | -4.0 | -17.0 | -3.0 | -1.0 | -7.0 | -3.0 | | -10.0 |
| Cash from investing | 87.0 | 121.0 | 36.0 | 41.0 | 86.0 | 21.0 | | 81.0 |
| |
| Cash dividends paid | | | | | | -11.0 | | -11.0 |
| Repurchase of common stock, net | | -1.0 | | -1.0 | | | | |
| Financing costs | | | -1.0 | | | -1.0 | | |
| Other cash from financing | -105.0 | -133.0 | -44.0 | -61.0 | -98.0 | -26.0 | | 58.0 |
| Cash from financing | -105.0 | -134.0 | -43.0 | -62.0 | -98.0 | -36.0 | | 47.0 |
| |
| Free cash flow | 28.0 | 28.0 | 0.0 | -23.0 | -5.0 | -30.0 | | -4.0 |
| Per share (diluted) | $0.46 | $0.48 | $0.00 | ($0.41) | ($0.09) | ($0.53) | | ($0.07) |
| |
| Cash paid for interest | 6.0 | 7.0 | 7.0 | 7.0 | 9.0 | 10.0 | | 10.0 |
| Cash paid for income taxes | | | | | 1.0 | | | |