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v3.21.2

Consolidated Statements of Cash Flows - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Cash flows from operating activities |  |  |  |  |  |  |
Net income | $ 753 | $ 673 | $ 569 | $ 381 | $ 2,245 | $ 1,342 |
Reconciliation of net income to net cash provided by operating activities: |  |  |  |  |  |  |
Depreciation |  |  |  |  | 883 | 867 |
Deferred income taxes |  |  |  |  | 158 | 78 |
Gains and losses on properties |  |  |  |  | (80) | (14) |
Loss on asset disposal | 0 |  | 0 |  | 0 | 385 |
Impairment of investment |  |  |  |  | 0 | 99 |
Changes in assets and liabilities affecting operations: |  |  |  |  |  |  |
Accounts receivable |  |  |  |  | (102) | 36 |
Materials and supplies |  |  |  |  | (14) | (3) |
Other current assets |  |  |  |  | 57 | 55 |
Current liabilities other than debt |  |  |  |  | 294 | 104 |
Other – net |  |  |  |  | (128) | (182) |
Net cash provided by operating activities |  |  |  |  | 3,313 | 2,767 |
Cash flows from investing activities |  |  |  |  |  |  |
Property additions |  |  |  |  | (1,025) | (1,053) |
Property sales and other transactions |  |  |  |  | 135 | 291 |
Investment purchases |  |  |  |  | (5) | (6) |
Investment sales and other transactions |  |  |  |  | 48 | (50) |
Net cash used in investing activities |  |  |  |  | (847) | (818) |
Cash flows from financing activities |  |  |  |  |  |  |
Dividends |  |  |  |  | (764) | (722) |
Common stock transactions |  |  |  |  | 8 | 53 |
Purchase and retirement of common stock |  |  |  |  | (2,460) | (960) |
Proceeds from borrowings |  |  |  |  | 1,676 | 784 |
Debt repayments |  |  |  |  | (576) | (325) |
Net cash used in financing activities |  |  |  |  | (2,116) | (1,170) |
Net increase in cash and cash equivalents |  |  |  |  | 350 | 779 |
Cash and cash equivalents |  |  |  |  |  |  |
At beginning of year |  | $ 1,115 |  | $ 580 | 1,115 | 580 | $ 580
At end of period | $ 1,465 |  | $ 1,359 |  | 1,465 | 1,359 | $ 1,115
Supplemental disclosures of cash flow information |  |  |  |  |  |  |
Interest (net of amounts capitalized) |  |  |  |  | 391 | 395 |
Income taxes (net of refunds) |  |  |  |  | $ 468 | $ 118 |

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