| In millions, except per share items | Mar-31-18 | Dec-31-17 | Sep-30-17 | Jun-30-17 | Mar-31-17 | Dec-31-16 | Sep-30-16 | Jun-30-16 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -85.1 | -79.5 | 17.9 | 19.7 | 19.7 | 18.2 | 22.0 | 21.7 |
| Depreciation and amortization | 157.8 | 160.9 | 163.4 | 164.7 | 162.8 | 171.6 | 168.1 | 161.4 |
| Stock-based compensation | 15.6 | 14.6 | 15.1 | 15.5 | 16.1 | 18.3 | 18.6 | 18.9 |
| Tax benefit from stock-based compensation | | | | | | -0.1 | -0.3 | -0.4 |
| Deferred taxes | 12.9 | 14.3 | -7.4 | -10.0 | -12.7 | -14.0 | -18.6 | -12.6 |
| Change in working capital [+] | -56.5 | -28.6 | 14.7 | 1.6 | 10.5 | -12.1 | -42.5 | -40.7 |
| Accounts receivable | -26.8 | 18.3 | -2.7 | 6.3 | 11.5 | -39.7 | -11.4 | -17.5 |
| Other current assets | -6.1 | -23.3 | 12.7 | -1.9 | -1.9 | 10.3 | -19.0 | -6.8 |
| Accounts payable | 1.1 | -1.1 | 1.0 | -0.2 | 0.0 | 0.9 | -0.3 | 0.5 |
| Accrued expenses | 1.3 | -0.1 | 2.2 | 4.8 | 3.6 | 1.7 | 3.7 | 3.4 |
| Deferred revenues | -26.0 | -22.4 | 1.4 | -7.4 | -2.6 | 14.7 | -15.5 | -20.2 |
| Other operating activities | 94.7 | 95.8 | 3.1 | 5.6 | 7.1 | 5.3 | 7.1 | 6.0 |
| Cash from operations | 139.4 | 177.5 | 206.8 | 197.0 | 203.4 | 187.3 | 154.5 | 154.4 |
| |
| Capital expenditures [+] | -94.0 | -103.7 | -98.0 | -120.5 | -131.2 | -120.4 | -123.3 | -123.6 |
| Purchases of property and equipment | -1.7 | -1.3 | -1.7 | -2.3 | -3.0 | -3.7 | -3.6 | -3.1 |
| Capitalized product costs | -92.3 | -102.4 | -96.3 | -118.2 | -128.1 | -116.7 | -119.8 | -120.4 |
| Acquisitions | | | | | | -228.5 | | |
| Sales of short-term investments, net [+] | 58.2 | 70.9 | 102.6 | 55.1 | 12.2 | 135.1 | 107.8 | 154.0 |
| Purchases of short-term investments | -38.9 | -39.5 | -40.8 | -64.9 | -73.9 | -71.0 | -131.4 | -167.3 |
| Sales of short-term investments | 97.1 | 110.4 | 143.5 | 120.0 | 86.0 | 206.1 | | |
| Other cash from investing | | 0.4 | -48.1 | -42.8 | | 0.3 | 48.5 | 42.6 |
| Cash from investing | -35.4 | -32.4 | -43.4 | -108.2 | -153.7 | -213.5 | -195.5 | -155.4 |
| |
| Cash dividends paid | -5.0 | -2.5 | | | | | | |
| Repurchase of common stock, net | | -8.3 | -16.0 | -25.8 | -40.7 | -60.1 | -67.6 | -61.7 |
| Option exercises | 5.7 | | 6.1 | 9.4 | 4.1 | 3.8 | 4.0 | 0.9 |
| Other cash from financing | -89.8 | -90.4 | -0.1 | 6.1 | -3.4 | 93.9 | 93.5 | 89.9 |
| Cash from financing | -104.2 | -107.1 | -22.1 | -29.1 | -48.2 | 32.0 | 23.9 | 29.3 |
| |
| Free cash flow | 137.8 | 176.2 | 205.1 | 194.7 | 200.3 | 183.6 | 150.9 | 151.3 |
| Per share (diluted) | $0.91 | $1.48 | $2.17 | $1.52 | $1.43 | $1.30 | $0.59 | $0.57 |
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