| In millions, except per share items | Jun-30-15 | Mar-31-15 | Dec-31-14 | Sep-30-14 | Jun-30-14 | Mar-31-14 | Dec-31-13 | Sep-30-13 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | -14.4 | -24.8 | -32.7 | -40.7 | -42.6 | -40.2 | -37.5 | -30.9 |
| Depreciation and amortization | 21.9 | 23.6 | 25.0 | 25.8 | 28.0 | 30.6 | 33.5 | 35.9 |
| Stock-based compensation | 0.4 | 0.1 | -0.2 | | -0.7 | 0.1 | | 1.2 |
| Deferred taxes | -2.3 | -0.5 | -0.1 | 7.8 | 6.5 | 6.2 | 6.3 | |
| Change in working capital [+] | 37.2 | 46.1 | 49.5 | 19.4 | 56.2 | 56.4 | 55.6 | -42.6 |
| Accounts receivable | 0.2 | -4.7 | 9.9 | -10.2 | 9.8 | 9.9 | 6.2 | 5.1 |
| Inventories | 5.9 | 17.0 | 25.3 | 30.2 | 17.6 | 4.6 | -10.5 | -17.5 |
| Other | 31.1 | 33.8 | 14.3 | -0.6 | 28.8 | 41.9 | 59.9 | -30.2 |
| Other operating activities | -43.4 | -39.4 | -34.3 | -10.5 | -45.3 | -50.5 | -47.1 | 33.8 |
| Cash from operations | -0.6 | 5.1 | 7.2 | 1.5 | 2.1 | 2.6 | 11.6 | -5.2 |
| |
| Capital expenditures [+] | -13.4 | -13.9 | -13.6 | -11.5 | -13.1 | -12.2 | -11.8 | -11.1 |
| Purchases of property and equipment | -13.4 | -13.9 | -13.6 | -11.5 | -13.1 | -12.2 | -11.8 | -11.1 |
| Sales of property and equipment | 4.9 | | | 8.2 | 4.5 | 4.4 | 0.3 | 1.1 |
| Other cash from investing | -1.9 | -6.9 | 3.8 | -11.1 | -3.7 | 0.6 | -10.5 | 2.6 |
| Cash from investing | -10.4 | -16.8 | -1.7 | -14.4 | -12.3 | -7.2 | -22.0 | -7.4 |
| |
| Financing costs | -0.7 | | -0.8 | -0.8 | | -0.4 | -0.2 | |
| Other cash from financing | -3.1 | -7.0 | -13.7 | 7.8 | 11.3 | 5.7 | 9.6 | -1.0 |
| Cash from financing | -2.4 | -6.4 | -12.9 | 8.6 | 11.7 | 6.1 | 9.8 | -1.0 |
| |
| Free cash flow | -14.0 | -8.8 | -6.4 | -10.0 | -11.0 | -9.6 | -0.2 | -16.3 |
| Per share (diluted) | ($0.76) | ($0.48) | ($0.35) | ($0.54) | ($0.60) | ($0.52) | ($0.01) | ($0.88) |
| |
| Cash paid for interest | 12.9 | 13.0 | 13.3 | 13.6 | 13.4 | 12.8 | 13.0 | 12.8 |
| Cash paid for income taxes | 1.2 | 1.2 | 1.1 | 1.1 | 1.7 | 2.2 | 2.3 | 2.2 |