| Net Income | 729.4 | 696.39 | 831.35 | 681.78 | 413.04 | |
| Depreciation & Amortization | 5.78 | 4.53 | 3.02 | 3.38 | 3.33 | |
| Gain (Loss) on Sale of Investments | 22.58 | 22.1 | 31.52 | 33.32 | 20.7 | |
| Stock-Based Compensation | 24.78 | 18.45 | 18.38 | 20.84 | 18.46 | |
| Change in Accounts Receivable | 7.47 | -2.07 | -11.21 | 3.34 | -8.85 | |
| Change in Unearned Revenue | -24.3 | -22.62 | -22.5 | -65.05 | -28.45 | |
| Change in Income Taxes | -18.95 | -52.19 | -57.65 | -58.17 | -40.75 | |
| Change in Insurance Reserves / Liabilities | 68.77 | 29.02 | -190.98 | 32.5 | 305.58 | |
| Change in Other Net Operating Assets | 7.88 | 63.32 | -58.99 | -0.88 | 6.03 | |
| Other Operating Activities | 46.02 | -5.81 | 72.27 | 109.75 | 39.93 | |
| Operating Cash Flow | 861.53 | 763 | 588.82 | 709.26 | 727.93 | |
| Operating Cash Flow Growth | 12.91% | 29.58% | -16.98% | -2.56% | 23.41% | |
| Capital Expenditures | -6.77 | -4 | -3.98 | -2.5 | -2.45 | |
| Purchase / Sale of Intangible Assets | -10 | - | - | - | - | |
| Cash Acquisitions | - | -86.76 | - | - | - | |
| Investment in Securities | -690.16 | -434.81 | -394.89 | -580.67 | -1,152 | |
| Investing Cash Flow | -706.93 | -525.57 | -398.87 | -583.17 | -1,154 | |
| Long-Term Debt Issued | 498.16 | - | - | 225 | 200 | |
| Total Debt Repaid | -425 | - | - | -125 | -100 | |
| Net Debt Issued (Repaid) | 73.16 | - | - | 100 | 100 | |
| Issuance of Common Stock | - | - | - | - | 439.96 | |
| Repurchases of Common Stock | -111.54 | -70.67 | -97.91 | -163.86 | -6.35 | |
| Common Dividends Paid | -118.04 | -106.22 | -92.13 | -77.72 | -69.41 | |
| Other Financing Activities | -8.49 | - | -0.15 | -5.85 | -6.23 | |
| Financing Cash Flow | -164.91 | -176.89 | -190.2 | -147.43 | 457.97 | |
| Net Cash Flow | -10.31 | 60.55 | -0.25 | -21.34 | 31.48 | |
| Free Cash Flow | 854.77 | 759 | 584.84 | 706.76 | 725.49 | |
| Free Cash Flow Growth | 12.62% | 29.78% | -17.25% | -2.58% | 23.71% | |
| Free Cash Flow Margin | 68.77% | 68.39% | 58.44% | 68.72% | 75.95% | |
| Free Cash Flow Per Share | 8.02 | 7.08 | 5.43 | 6.34 | 6.82 | |
| Cash Interest Paid | 17.2 | 28.57 | 13.6 | 6.95 | 8.26 | |
| Cash Income Tax Paid | 92.52 | 139.71 | 98.01 | 55.8 | 38.71 | |
| Levered Free Cash Flow | 563.78 | -168.49 | 406.7 | 870.88 | 162.75 | |
| Unlevered Free Cash Flow | 585.85 | -149.66 | 416.45 | 876.05 | 168.42 | |
| Change in Net Working Capital | -15.3 | 704.65 | 230.22 | -335.21 | 162.91 | |