| Net Income | 1,179 | 1,091 | 792 | 659 | 673 | |
| Depreciation & Amortization | 117 | 113 | 122 | 90 | 50 | |
| Other Amortization | 69 | 58 | 54 | 41 | 38 | |
| Stock-Based Compensation | 116 | 115 | 103 | 72 | 57 | |
| Change in Accounts Receivable | -78 | -778 | -95 | -415 | -100 | |
| Change in Accounts Payable | 115 | 328 | 55 | 138 | 86 | |
| Change in Unearned Revenue | -367 | 59 | -11 | -5 | 126 | |
| Change in Income Taxes | -18 | -2 | 2 | 7 | -14 | |
| Change in Insurance Reserves / Liabilities | -40 | 580 | 153 | 471 | 544 | |
| Change in Other Net Operating Assets | -510 | 127 | -552 | 1,027 | 430 | |
| Other Operating Activities | 61 | -29 | -58 | 34 | 8 | |
| Operating Cash Flow | 644 | 1,662 | 773 | 2,119 | 1,898 | |
| Operating Cash Flow Growth | -61.25% | 115.01% | -63.52% | 11.64% | 337.33% | |
| Capital Expenditures | -100 | -84 | -91 | -77 | -74 | |
| Cash Acquisitions | -344 | -3 | -134 | -129 | -755 | |
| Investment in Securities | -21 | -661 | -515 | -1,384 | 427 | |
| Other Investing Activities | 1 | 4 | -50 | -63 | 2 | |
| Investing Cash Flow | -464 | -744 | -790 | -1,653 | -400 | |
| Long-Term Debt Issued | 1,040 | - | - | 740 | 1,809 | |
| Total Debt Repaid | -300 | - | - | -723 | -950 | |
| Net Debt Issued (Repaid) | 740 | - | - | 17 | 859 | |
| Repurchases of Common Stock | -1,057 | -60 | -454 | -181 | -614 | |
| Other Financing Activities | -30 | 2 | 13 | -19 | -28 | |
| Financing Cash Flow | -347 | -58 | -441 | -183 | 217 | |
| Net Cash Flow | -167 | 860 | -458 | 283 | 1,715 | |
| Free Cash Flow | 544 | 1,578 | 682 | 2,042 | 1,824 | |
| Free Cash Flow Growth | -65.53% | 131.38% | -66.60% | 11.95% | 383.82% | |
| Free Cash Flow Margin | 1.39% | 4.78% | 2.19% | 7.57% | 9.93% | |
| Free Cash Flow Per Share | 9.43 | 27.16 | 11.66 | 34.85 | 30.45 | |
| Cash Interest Paid | 121 | 108 | 108 | 127 | 112 | |
| Cash Income Tax Paid | 379 | 405 | 340 | 235 | 321 | |
| Levered Free Cash Flow | 509.75 | 861.63 | 325.38 | 849.5 | 2,108 | |
| Unlevered Free Cash Flow | 583.5 | 929.75 | 394.13 | 924.5 | 2,172 | |
| Change in Net Working Capital | 686 | 281 | 657 | -161 | -1,507 | |