| In millions, except per share items | Dec-31-13 | Dec-31-12 | Dec-31-11 | Dec-31-10 | Jun-30-10 | Dec-31-09 | Jun-30-09 | Dec-31-08 |
| | 10-K | 10-K | 10-K | 10-K | 8-K | 10-K/A | 8-K | 10-K |
| Net income | -219.6 | -150.1 | -154.8 | 122.4 | -59.4 | -116.0 | -78.7 | -213.1 |
| Depreciation and amortization [+] | 2.8 | 2.2 | 1.9 | 2.4 | | 3.6 | | 3.6 |
| Depreciation | 2.8 | 2.2 | 1.9 | 2.4 | | 3.6 | | 3.6 |
| Stock-based compensation | 12.3 | 15.1 | 18.2 | 10.3 | | 7.8 | | 6.8 |
| Deferred taxes | | | | | | 2.3 | | |
| Change in working capital [+] | -12.1 | 13.3 | -3.8 | -56.1 | | -19.5 | | 9.1 |
| Accounts receivable | -14.7 | -3.0 | -2.1 | 2.1 | | -0.7 | | 0.0 |
| Inventories | -1.1 | -5.5 | -5.1 | 1.4 | | -1.3 | | 0.5 |
| Deferred revenues | | | | -59.7 | | -3.3 | | |
| Other | 3.7 | 21.8 | 3.3 | 0.1 | | -14.2 | | 8.6 |
| Other operating activities | 12.7 | -53.1 | 12.1 | -6.7 | | -5.8 | | 121.3 |
| Cash from operations | -203.9 | -172.6 | -126.4 | 72.3 | | -127.6 | | -72.3 |
| |
| Capital expenditures | -2.1 | -3.2 | -2.3 | -0.3 | | -0.4 | | -2.0 |
| Purchases of property and equipment | -2.1 | -3.2 | -2.3 | -0.3 | | -0.4 | | -2.0 |
| Purchases of intangible assets | | | -20.0 | | | | | |
| Purchases of short-term investments, net | -26.4 | -32.5 | -209.3 | -117.2 | | -24.0 | | 47.2 |
| Purchases of short-term investments | -206.9 | -298.2 | -437.9 | -301.5 | | -101.1 | | -119.8 |
| Sales of short-term investments | 180.5 | 265.6 | 228.5 | 184.3 | | 77.2 | | 167.0 |
| Other cash from investing | 21.0 | 87.5 | 203.8 | 14.7 | | 39.8 | | |
| Cash from investing | -7.5 | 51.8 | -27.8 | -102.8 | | 15.4 | | 45.1 |
| |
| Issuance of common stock, net | 237.2 | | 104.8 | 106.8 | | 63.4 | | |
| Option exercises | 3.3 | 3.6 | 34.6 | 17.2 | | 2.0 | | |
| Other cash from financing | 51.2 | 7.3 | 219.5 | 34.3 | | 4.0 | | 2.0 |
| Cash from financing | 285.1 | 3.6 | 289.6 | 124.0 | | 65.4 | | 2.0 |
| |
| Free cash flow | -206.1 | -175.8 | -128.6 | 72.0 | | -128.0 | | -74.4 |
| Per share (diluted) | ($2.53) | ($2.70) | ($2.14) | $1.17 | | ($2.89) | | ($1.91) |
| |
| Cash paid for interest | 8.8 | 8.1 | 4.3 | 4.5 | | 5.4 | | |