| 683 | 583 | 729 | 517 | 741 | 426 | | | | | | |
| | | | | | | | | | | | |
Depreciation & Amortization | 564 | 605 | 585 | 565 | 566 | 540 | | | | | | |
Depreciation, Depletion, and Amortization | | | | | | | | | | | | |
| 21 | 19 | 30 | 30 | 21 | 24 | | | | | | |
Amortization of Stock-Based Awards | | | | | | | | | | | | |
| 242 | 158 | 143 | 140 | -39 | 298 | | | | | | |
Provision for Deferred Income Taxes | | | | | | | | | | | | |
| | | | | | | | | | | | |
Distributions from Equity-Method Investees | | | | | | | | | | | | |
| | | | | | | | | | | | |
Impairment of Equity-Method Investments | | | | | | | | | | | | |
Impairment of Certain Assets | | | | | | | | | | | | |
Net Unrealized Gain from Commodity Derivative Instruments | | | | | | | | | | | | |
| | | | | | | | | | | | |
Gain on Disposition of Equity-Method Investments | | | | | | | | | | | | |
Loss on Deconsolidation of Businesses | | | | | | | | | | | | |
Impairment of and Net Gain on Sale of Assets and Businesses | | | | | | | | | | | | |
Gain on Remeasurement of Equity-Method Investments | | | | | | | | | | | | |
| | | | | | | | | | | | |
Regulatory Charges Resulting from Tax Reform | | | | | | | | | | | | |
Changes in Trade Receivables | 83 | 219 | 82 | -536 | 97 | -44 | | | | | | |
Change in Accounts Receivable | | | | | | | | | | | | |
| -5 | -89 | 28 | -3 | -3 | -37 | | | | | | |
| | | | | | | | | | | | |
Changes in Accounts Payable | -94 | -236 | -29 | 456 | -98 | 90 | | | | | | |
Change in Accounts Payable | | | | | | | | | | | | |
Changes in Other Operating Activities | -55 | 191 | -135 | -89 | -42 | -18 | | | | | | |
Change in Other Current Assets and Deferred Charges | | | | | | | | | | | | |
Change in Other Current Liabilities | | | | | | | | | | | | |
Changes in Current and Noncurrent Commodity Derivative Assets and Liabilities | | | | | | | | | | | | |
Other, Including Changes in Noncurrent Assets and Liabilities | | | | | | | | | | | | |
Cash from Operating Activities | 1,439 | 1,450 | 1,433 | 1,218 | 1,243 | 1,279 | | | | | | |
Net Cash Provided by Operating Activities | | | | | | | | | | | | |