| In millions, except per share items | Mar-31-15 | Dec-31-14 | Sep-30-14 | Jun-30-14 | Mar-31-14 | Dec-31-13 | Sep-30-13 | Jun-30-13 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -24.3 | 49.4 | 31.8 | 28.5 | 16.6 | 31.4 | 50.6 | 55.5 |
| Depreciation and amortization | 22.4 | 21.6 | 23.1 | 24.0 | 23.6 | 25.2 | 21.2 | 21.6 |
| Stock-based compensation | 8.4 | 6.2 | 6.3 | 5.8 | 7.3 | 3.1 | 4.9 | 7.3 |
| Tax benefit from stock-based compensation | -3.2 | -0.1 | -0.2 | -1.4 | -0.7 | | -0.2 | -0.5 |
| Deferred taxes | -8.4 | -5.6 | -27.9 | -1.0 | -2.0 | -0.6 | 0.4 | 3.8 |
| Change in working capital [+] | -14.1 | -78.7 | -40.8 | -81.7 | 6.4 | 87.2 | -204.1 | -33.6 |
| Accounts receivable | 29.7 | -49.4 | -82.8 | 61.8 | 104.1 | -21.4 | -58.0 | -132.2 |
| Inventories | -4.1 | 46.5 | -8.8 | 2.4 | -31.6 | 3.1 | -143.5 | 52.4 |
| Other current assets | -15.6 | -7.8 | 1.9 | -0.8 | -6.1 | -5.2 | -1.5 | -12.3 |
| Income taxes | -7.2 | -2.7 | 11.2 | 1.2 | 4.2 | -16.0 | 2.6 | -11.9 |
| Other | -16.9 | -65.3 | 37.7 | -146.3 | -64.2 | 126.7 | -3.7 | 70.4 |
| Other operating activities | 42.1 | 73.1 | 102.0 | 61.3 | 7.9 | -50.7 | -0.8 | -45.3 |
| Cash from operations | 22.9 | 65.9 | 94.3 | 35.5 | 59.1 | 95.6 | -128.0 | 8.8 |
| |
| Capital expenditures [+] | -31.5 | -14.5 | -11.8 | -20.9 | -10.8 | -26.3 | -16.6 | -19.8 |
| Purchases of property and equipment | -31.5 | -14.5 | -11.8 | -20.9 | -10.8 | -26.3 | -16.6 | -19.8 |
| Sales of property and equipment | 0.1 | | 0.1 | 0.6 | | | 1.4 | |
| Acquisitions | | | -1.0 | | | | | |
| Other cash from investing | -1.7 | 5.1 | 0.8 | -18.3 | -3.3 | 4.4 | -2.1 | 6.7 |
| Cash from investing | -33.1 | -9.4 | -11.9 | -38.6 | -14.1 | -21.9 | -17.3 | -13.1 |
| |
| Repurchase of common stock, net | -10.1 | -0.2 | -0.2 | -0.3 | -4.9 | | | |
| Option exercises | 0.7 | | 1.0 | 3.3 | | | 0.5 | 3.5 |
| Financing costs | | -0.3 | 0.2 | | | -5.1 | -4.7 | |
| Other cash from financing | -39.5 | -25.6 | -50.5 | -33.2 | -56.2 | -61.2 | 155.3 | 23.0 |
| Cash from financing | -50.3 | -25.5 | -51.9 | -36.8 | -61.1 | -56.1 | 159.5 | 19.5 |
| |
| Free cash flow | -8.6 | 51.4 | 82.5 | 14.6 | 48.3 | 69.3 | -144.6 | -11.0 |
| Per share (diluted) | ($0.11) | $0.67 | $1.07 | $0.19 | $0.63 | $0.90 | ($1.88) | ($0.14) |