| Net Income | 177.98 | 200.99 | 246.26 | 183.08 | 98.65 | 49.98 | |
| Depreciation & Amortization | 9.54 | 9.01 | 7.47 | 6.41 | 5.52 | 4.74 | |
| Other Amortization | 6.8 | 6.8 | 5.6 | 5.2 | 5.3 | 5.2 | |
| Loss (Gain) From Sale of Assets | - | - | - | - | - | -0.17 | |
| Loss (Gain) From Sale of Investments | -9.75 | -12.44 | -12.08 | - | - | - | |
| Stock-Based Compensation | 21.16 | 20.95 | 18.27 | 13.44 | 12.07 | 10.49 | |
| Provision & Write-off of Bad Debts | 3.45 | 2.99 | 1.13 | - | - | - | |
| Other Operating Activities | -10.06 | -2.08 | -12.56 | 19.09 | 24.01 | 8.38 | |
| Change in Accounts Receivable | 38.45 | 6.91 | -50.76 | -67.27 | -18.15 | -1.39 | |
| Change in Inventory | 4.96 | 5.92 | -69.96 | -58.43 | -39.02 | -17.65 | |
| Change in Accounts Payable | 2.86 | -0.41 | -8.1 | 31.39 | 22.05 | 18.06 | |
| Change in Unearned Revenue | -68.03 | -71.1 | 56.18 | 86.37 | 45.39 | -6.22 | |
| Change in Income Taxes | -28.21 | -9.03 | 3.79 | 3.49 | 0.25 | 0.33 | |
| Change in Other Net Operating Assets | -10.77 | -17.68 | -28.38 | -7.16 | -5.87 | -2.05 | |
| Operating Cash Flow | 138.39 | 140.82 | 156.87 | 215.61 | 150.19 | 69.7 | |
| Operating Cash Flow Growth | -15.89% | -10.23% | -27.24% | 43.56% | 115.47% | - | |
| Capital Expenditures | -15.52 | -12.18 | -20.66 | -10.68 | -8.72 | -7.43 | |
| Sale of Property, Plant & Equipment | - | - | - | - | - | 0.17 | |
| Investment in Securities | 2.96 | -96.55 | -80.2 | -246.57 | - | - | |
| Investing Cash Flow | -12.57 | -108.73 | -100.86 | -257.25 | -8.72 | -7.27 | |
| Long-Term Debt Repaid | - | -1.53 | -1.24 | -0.99 | -0.76 | -0.4 | |
| Net Debt Issued (Repaid) | -1.52 | -1.53 | -1.24 | -0.99 | -0.76 | -0.4 | |
| Issuance of Common Stock | 2.39 | 2.39 | 2.08 | 2.91 | 4.87 | 9.43 | |
| Repurchase of Common Stock | -63.67 | -60.49 | -52.5 | -57.5 | -49.99 | -7.5 | |
| Other Financing Activities | -10.45 | -11.56 | -16.61 | -9.91 | -6.56 | -3.92 | |
| Financing Cash Flow | -73.25 | -71.19 | -68.27 | -65.48 | -52.45 | -2.39 | |
| Foreign Exchange Rate Adjustments | -1.68 | -3.79 | -0.14 | -2.21 | 2.43 | -2.35 | |
| Net Cash Flow | 50.9 | -42.89 | -12.4 | -109.33 | 91.45 | 57.7 | |
| Free Cash Flow | 122.87 | 128.64 | 136.21 | 204.92 | 141.47 | 62.27 | |
| Free Cash Flow Growth | -14.97% | -5.56% | -33.53% | 44.85% | 127.19% | - | |
| Free Cash Flow Margin | 12.83% | 12.64% | 12.05% | 22.27% | 21.36% | 13.12% | |
| Free Cash Flow Per Share | 3.77 | 3.93 | 4.11 | 6.11 | 4.13 | 1.82 | |
| Cash Interest Paid | 4.73 | 4.73 | 4.87 | 4.99 | 5.09 | 5.16 | |
| Cash Income Tax Paid | 61.13 | 61.13 | 54.22 | 10.76 | 1.5 | 0.88 | |
| Levered Free Cash Flow | 105.8 | 97.56 | 82.2 | 119.54 | 97.06 | 30.48 | |
| Unlevered Free Cash Flow | 109.23 | 100.97 | 85.54 | 123.03 | 100.08 | 33.73 | |
| Change in Net Working Capital | 27.39 | 55.36 | 91.26 | 24.07 | -6.33 | 15.53 | |