|  | -161.23 | 25.43 | -270.73 | -606.28 | -572.61 | -406.83 |  | 
| Depreciation & Amortization | 30.43 | 32.15 | 30.69 | 15.28 | 14.61 | 11.29 |  | 
|  | 0.78 | 0.78 | 0.78 | 0.71 | 0.33 | 0.33 |  | 
| Gain (Loss) on Sale of Investments | -30.33 | -26.88 | -29.37 | 2.48 | 8.03 | 2.59 |  | 
|  | 104.25 | 109.82 | 159.68 | 112.33 | 86.3 | 35.87 |  | 
| Change in Accounts Receivable | -43.24 | -114.32 | -13.41 | -81.05 | -66.95 | -35.25 |  | 
|  | 48.59 | -50.34 | 651.69 | -460.9 | 147.4 | -63.33 |  | 
| Change in Accounts Payable | 223.12 | 152.77 | -29.18 | 57.81 | 98.62 | 75.8 |  | 
| Change in Unearned Revenue | 9.52 | 8.47 | -13.08 | 3.95 | 3.14 | 46.6 |  | 
| Change in Insurance Reserves / Liabilities | -2.89 | -5.78 | 1.56 | -25.03 | -55.33 | 71.82 |  | 
| Change in Other Net Operating Assets | 1,127 | 867.74 | -423.05 | 1,138 | 258.89 | 569.27 |  | 
| Other Operating Activities | -1.97 | -1.67 | 0.26 | -2.17 | 33.9 | 3.79 |  | 
|  | 1,234 | 978.19 | -272.16 | 380.35 | -181.75 | 222.73 |  | 
|  | -32.69 | -27.9 | -25.58 | -29.01 | -25.89 | -14.02 |  | 
|  | -921.97 | -1,363 | 605.04 | -198.62 | -755.31 | -329.45 |  | 
| Other Investing Activities | 3 | 3.93 | -2.28 | 1.12 | 6.68 | -1.24 |  | 
|  | -951.65 | -1,387 | 577.19 | -226.52 | -774.52 | -344.71 |  | 
|  | - | - | - | 305 | - | 147 |  | 
|  | - | - | - | - | -153.17 | - |  | 
|  | - | - | - | 305 | -153.17 | 147 |  | 
|  | 51.67 | 68.39 | 6.45 | 3.15 | 1,407 | 93.88 |  | 
| Repurchases of Common Stock | -2.29 | - | - | - | - | - |  | 
| Issuance of Preferred Stock | - | - | - | - | - | 375.67 |  | 
| Other Financing Activities | - | - | - | -7.04 | -15.21 | -4.84 |  | 
|  | 49.38 | 68.39 | 6.45 | 301.11 | 1,239 | 611.71 |  | 
|  | 332.02 | -340.85 | 311.47 | 454.94 | 282.45 | 489.73 |  | 
|  | 1,202 | 950.3 | -297.74 | 351.34 | -207.63 | 208.71 |  | 
|  | 11.20% | 10.36% | -5.08% | 8.86% | -10.96% | 53.38% |  | 
|  | 4.82 | 3.58 | -1.34 | 1.65 | -1.16 | 7.13 |  | 
|  | 33.78 | 33.69 | 23.16 | 10.08 | 4.26 | - |  | 
|  | 16.07 | 0.67 | 2.41 | 1.89 | 0.7 | 1.53 |  | 
|  | 747.53 | 1,043 | 567.79 | -230.88 | -253.85 | 320.28 |  | 
|  | 761.56 | 1,058 | 582.39 | -217.46 | -251.23 | 322.15 |  | 
| Change in Working Capital | 1,315 | 838.86 | -192.09 | 855 | 247.7 | 575.7 |  |