| In millions, except per share items | Sep-30-14 | Jun-30-14 | Mar-31-14 | Dec-31-13 | Sep-30-13 | Jun-30-13 | Mar-31-13 | Dec-31-12 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | 102.1 | -50.4 | -14.2 | 27.0 | -21.7 | 63.6 | -8.2 | 1.9 |
| Depreciation and amortization | 32.6 | 30.8 | 29.8 | 29.7 | 28.0 | 26.7 | 30.8 | 29.9 |
| Stock-based compensation | 5.8 | 3.4 | 1.7 | 6.9 | 5.1 | 3.2 | 1.0 | 3.3 |
| Deferred taxes | | | | -0.3 | | | | 0.4 |
| Change in working capital | -12.7 | -3.7 | -7.1 | 3.4 | 1.6 | 4.5 | -2.2 | 12.8 |
| Other | -12.7 | -3.7 | -7.1 | 3.4 | 1.6 | 4.5 | -2.2 | 12.8 |
| Other operating activities | -72.5 | 56.9 | 31.8 | -6.4 | 35.6 | -38.7 | 12.4 | 21.0 |
| Cash from operations | 55.3 | 37.0 | 42.2 | 60.3 | 48.6 | 59.3 | 33.9 | 69.2 |
| |
| Capital expenditures | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Acquisitions | -3.8 | -11.4 | -29.0 | -26.5 | -99.5 | -4.5 | 2.3 | -242.9 |
| Purchases of short-term investments, net | -0.7 | 0.0 | 0.4 | -2.1 | 0.4 | | | |
| Purchases of short-term investments | -3.6 | -0.2 | -0.2 | -6.0 | -4.3 | | | |
| Sales of short-term investments | 2.9 | 0.3 | 0.6 | 3.9 | 4.6 | | | |
| Other cash from investing | -45.0 | -43.3 | -29.8 | -22.3 | -26.9 | -20.5 | -18.5 | -26.4 |
| Cash from investing | -49.5 | -54.7 | -58.4 | -51.0 | -126.0 | -25.0 | -16.2 | -269.3 |
| |
| Issuance of common stock, net | | | | | | | 0.1 | |
| Financing costs | | | | -2.0 | -1.8 | -1.8 | -1.8 | -8.9 |
| Other cash from financing | 4.0 | 0.9 | 26.2 | -24.0 | 82.0 | -32.0 | -35.9 | 197.9 |
| Cash from financing | 4.0 | 0.9 | 26.2 | -22.1 | 83.8 | -30.2 | -33.9 | 206.8 |
| |
| Free cash flow | 55.3 | 37.0 | 42.2 | 60.3 | 48.6 | 59.3 | 33.9 | 69.2 |
| Per share (diluted) | | | | | $1.29 | $0.83 | $1.37 | $1.96 |