| 343 | 313 | 152 | 303 | 275 | 282 | | | | | | |
| | | | | | | | | | | | |
Depreciation & Amortization | 195 | 170 | 144 | 122 | 99 | 90 | | | | | | |
Depreciation, Amortization and Accretion | | | | | | | | | | | | |
Amortization of Costs to Obtain a Contract with a Customer | | | | | | | | | | | | |
| 186 | 191 | 230 | 186 | 181 | 167 | | | | | | |
Stock-Based Compensation Expense | | | | | | | | | | | | |
| 147 | 35 | 115 | -55 | -14.5 | -38 | | | | | | |
| | | | | | | | | | | | |
Lease-Related Asset Impairments | | | | | | | | | | | | |
Restructuring, Other Exit Costs, and Facility Reductions | | | | | | | | | | | | |
| | | | | | | | | | | | |
Changes in Trade Receivables | -274 | -39 | 515 | -309 | -300 | -49 | | | | | | |
| | | | | | | | | | | | |
Changes in Accounts Payable | 78 | 128 | -111 | 237 | 31 | 136 | | | | | | |
Accounts Payable and Other Liabilities | | | | | | | | | | | | |
Changes in Income Taxes Payable | 43 | -20 | 27 | -3 | 34 | -6 | | | | | | |
| | | | | | | | | | | | |
Changes in Unearned Revenue | 1 | -83 | -204 | 478 | -35 | -272 | | | | | | |
| | | | | | | | | | | | |
Changes in Other Operating Activities | -280 | -235 | -304 | -267 | -54 | -98 | | | | | | |
Prepaid Expenses and Other Assets | | | | | | | | | | | | |
Cash from Operating Activities | 439 | 460 | 564 | 692 | 209 | 212 | | | | | | |
Net Cash Provided by Operating Activities | | | | | | | | | | | | |