| In millions, except per share items | Dec-31-11 | Sep-30-11 | Jun-30-11 | Mar-31-11 | Dec-31-10 | Sep-30-10 | Jun-30-10 | Mar-31-10 |
| | 10-K | 10-Q | 10-Q/A | 10-Q | 10-K | 10-Q | 10-Q/A | 10-Q |
| Net income | -17.4 | -14.2 | -9.2 | -2.6 | 0.4 | 5.6 | 2.9 | 4.2 |
| Depreciation and amortization | 35.2 | 35.1 | 32.4 | 30.3 | 28.7 | 26.5 | 20.2 | 20.1 |
| Stock-based compensation | 21.9 | 19.6 | 17.3 | 15.9 | 14.9 | 13.9 | 12.8 | 11.9 |
| Tax benefit from stock-based compensation | 0.0 | -0.6 | -0.4 | -0.4 | -0.3 | -0.3 | | -0.3 |
| Change in working capital [+] | -25.1 | -18.6 | -13.4 | -15.6 | -13.6 | 0.5 | 1.6 | -2.5 |
| Accounts receivable | -26.0 | -20.6 | -17.3 | -15.9 | -11.0 | 7.6 | 3.7 | 2.7 |
| Other current assets | -6.5 | -10.7 | -11.1 | -8.0 | -10.7 | -6.8 | | |
| Other | 7.4 | 12.7 | 15.1 | 8.3 | 8.2 | -0.3 | | |
| Other operating activities | 16.9 | 2.8 | 7.3 | 12.3 | 5.6 | 11.2 | 18.4 | 15.3 |
| Cash from operations | 31.4 | 24.1 | 33.9 | 40.0 | 35.8 | 57.3 | 55.5 | 48.7 |
| |
| Capital expenditures | -15.9 | -12.7 | -9.0 | -10.4 | -14.5 | -13.7 | -14.6 | -13.5 |
| Purchases of property and equipment | -15.9 | -12.7 | -9.0 | -10.4 | -14.5 | -13.7 | -14.6 | -13.5 |
| Purchases of intangible assets | | -1.8 | | | | | | |
| Acquisitions | | -170.7 | -136.2 | -124.2 | -137.5 | | | -13.4 |
| Other cash from investing | 0.9 | 0.8 | | | | | | |
| Cash from investing | -63.4 | -184.4 | -145.7 | -145.7 | -151.6 | -26.6 | -27.6 | -26.4 |
| |
| Option exercises | 22.6 | 21.6 | 25.5 | 24.6 | 23.5 | 18.4 | | |
| Cash from financing | 7.7 | 7.3 | 13.9 | 13.9 | 12.6 | 156.1 | 154.7 | 152.8 |
| |
| Free cash flow | 15.5 | 11.4 | 24.9 | 29.6 | 21.3 | 43.7 | 40.9 | 35.2 |
| Per share (diluted) | $0.38 | $0.28 | $0.61 | $0.73 | $0.53 | $1.14 | $1.15 | $1.05 |
| |
| Cash paid for interest | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | |
| Cash paid for income taxes | -0.3 | 1.0 | 2.7 | 2.7 | 3.7 | 3.1 | | |