| Net Income | 23.7 | 19.62 | 19.62 | 13.6 | 11.08 | 13.44 | |
| Depreciation & Amortization | 0.97 | 1.14 | 1.14 | 1.05 | 1.18 | 1.23 | |
| Other Amortization | 0.21 | 0.35 | 0.51 | 0.66 | 0.69 | 0.69 | |
| Loss (Gain) From Sale of Assets | - | - | 0.09 | - | - | - | |
| Stock-Based Compensation | 0.89 | 0.73 | 0.26 | 0.07 | 0.12 | 0.12 | |
| Provision & Write-off of Bad Debts | 0.14 | 0.16 | 0.46 | 0.19 | 0.1 | 0.07 | |
| Other Operating Activities | 0.19 | 0.19 | 0.41 | 0.78 | -0.03 | 0.58 | |
| Change in Accounts Receivable | -1.29 | -0.07 | -2.15 | -1.91 | -0.65 | -1.01 | |
| Change in Inventory | -0.03 | -0.3 | -0.02 | 0.1 | -0.25 | 0.16 | |
| Change in Accounts Payable | -0.17 | -1.23 | 0.38 | 1.7 | -0.29 | -2.03 | |
| Change in Unearned Revenue | -0.33 | -0.38 | -0.49 | 0.32 | -0.14 | -1.09 | |
| Change in Other Net Operating Assets | 0.58 | -0.18 | -0.36 | -0.08 | -0.05 | -0.04 | |
| Operating Cash Flow | 24.86 | 20 | 19.84 | 16.48 | 11.77 | 12.35 | |
| Operating Cash Flow Growth | 23.64% | 0.83% | 20.39% | 40.04% | -4.72% | 10.69% | |
| Capital Expenditures | -0.24 | -0.31 | -0.63 | -0.64 | -0.55 | -0.87 | |
| Other Investing Activities | - | - | 0.04 | - | - | - | |
| Investing Cash Flow | -0.24 | -0.31 | -0.58 | -0.64 | -0.55 | -0.87 | |
| Long-Term Debt Repaid | - | -20 | -30 | -40 | - | - | |
| Net Debt Issued (Repaid) | -8.6 | -20 | -30 | -40 | - | - | |
| Issuance of Common Stock | - | - | - | - | - | 1.08 | |
| Repurchase of Common Stock | -0.44 | -0.36 | -1.89 | -0.01 | -1.51 | -4.97 | |
| Common Dividends Paid | -8.17 | -8.16 | -7.56 | -6.17 | -5.76 | -5.91 | |
| Other Financing Activities | -0.43 | - | - | -0.66 | - | - | |
| Financing Cash Flow | -17.64 | -28.52 | -39.46 | -46.84 | -7.27 | -9.81 | |
| Net Cash Flow | 6.98 | -8.83 | -20.2 | -31 | 3.95 | 1.67 | |
| Free Cash Flow | 24.62 | 19.69 | 19.21 | 15.84 | 11.22 | 11.48 | |
| Free Cash Flow Growth | 24.32% | 2.49% | 21.27% | 41.25% | -2.30% | 7.19% | |
| Free Cash Flow Margin | 16.81% | 14.21% | 14.69% | 13.79% | 14.79% | 11.11% | |
| Free Cash Flow Per Share | 6.02 | 4.82 | 4.70 | 3.85 | 2.73 | 2.72 | |
| Cash Interest Paid | 4.73 | 5.48 | 8.06 | 10.56 | 9.94 | 9.94 | |
| Cash Income Tax Paid | 8.42 | 8.31 | 7.16 | 4.98 | 4.77 | 3.87 | |
| Levered Free Cash Flow | 21.2 | 17.38 | 16.17 | 13.55 | 9.55 | 8.69 | |
| Unlevered Free Cash Flow | 23.79 | 20.38 | 20.5 | 19.23 | 15.48 | 14.62 | |
| Change in Net Working Capital | 0.91 | 1.49 | 1.8 | -0.07 | 1.21 | 2.84 | |