| In millions, except per share items | Jul-31-13 | Jul-31-12 | Jul-31-11 | Jul-31-10 | Jul-31-09 | Jul-31-08 | Jul-31-07 | Jul-31-06 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | 10.0 | -27.3 | -112.3 | -93.7 | -189.5 | 0.6 | 59.3 | 53.6 |
| Depreciation and amortization | 33.8 | 37.9 | 41.3 | 50.0 | 58.9 | 60.2 | 57.6 | 55.8 |
| Stock-based compensation | 3.3 | 2.7 | 2.2 | 3.9 | 5.7 | 4.4 | 6.1 | 6.4 |
| Tax benefit from stock-based compensation | | | | | 0.2 | 0.1 | 1.4 | 1.1 |
| Deferred taxes | 1.2 | 1.5 | 5.3 | 0.0 | -61.0 | -14.6 | 7.1 | 1.5 |
| Change in working capital [+] | -10.0 | -57.1 | 20.0 | 88.7 | 133.2 | 95.0 | -84.9 | -59.0 |
| Inventories | -29.6 | -27.5 | -8.1 | 42.4 | 53.2 | 71.1 | -97.0 | -64.9 |
| Other current assets | -7.4 | 5.9 | -5.8 | 10.1 | | | | |
| Deferred revenues | -16.4 | -22.1 | 10.4 | 7.1 | | | | |
| Other | 43.5 | -13.4 | 23.4 | 29.1 | 80.1 | | | |
| Other operating activities | 12.1 | 5.4 | -3.4 | 3.4 | 55.2 | -11.2 | -7.2 | -6.5 |
| Cash from operations | 50.4 | -36.9 | -46.9 | 52.3 | 2.7 | 134.5 | 39.3 | 53.0 |
| |
| Capital expenditures | -23.0 | -19.8 | -15.3 | -14.7 | -28.4 | -85.1 | -79.3 | -76.4 |
| Purchases of property and equipment | -23.0 | -19.8 | -15.3 | -14.7 | -28.4 | -85.1 | -79.3 | -76.4 |
| Sales of short-term investments, net [+] | 8.7 | 1.7 | -3.2 | -0.6 | 3.1 | -2.2 | -3.2 | 1.2 |
| Purchases of short-term investments | -4.2 | -6.8 | -9.4 | -3.0 | -22.7 | -10.4 | -11.3 | -2.1 |
| Sales of short-term investments | 12.9 | 8.5 | 6.1 | 2.4 | 25.8 | 8.3 | 8.1 | 3.3 |
| Cash from investing | -14.3 | -18.1 | -18.6 | -15.2 | -25.3 | -87.3 | -82.4 | -75.3 |
| |
| Repurchase of common stock, net | | | | | | -326.7 | | -100.0 |
| Option exercises | 0.1 | 0.0 | 0.1 | | | | | |
| Financing costs | | -8.0 | | -25.5 | | | | |
| Other cash from financing | -43.3 | 37.9 | 78.9 | -46.5 | | | | |
| Cash from financing | -43.5 | 45.9 | 78.8 | -21.0 | -9.4 | -225.7 | 43.7 | -15.2 |
| |
| Free cash flow | 27.4 | -56.6 | -62.3 | 37.7 | -25.7 | 49.4 | -40.0 | -23.4 |
| Per share (diluted) | $0.67 | ($1.76) | ($1.94) | $1.17 | ($0.80) | $1.16 | ($0.82) | ($0.48) |