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Consolidated Statements of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash Flows From Operating Activities: |  |  |
Net income | $ 4,609 | $ 1,318 | $ 280
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 2,341 | 2,107 | 1,998
Deferred income taxes | 980 | 591 | 115
(Gain)/loss on fair value investments | (1,283) | 874 | (38)
Pension, postretirement and postemployment payments greater than expense | (121) | (453) | (2,038)
Changes in certain assets and liabilities: |  |  |
Receivables | (7) | (728) | (981)
Fuel inventory | 121 | (158) | (318)
Prepaids and other current assets | 17 | (867) | (58)
Profit sharing | 821 | 455 | 108
Other payables, deferred revenue and accrued liabilities | (285) | 1,226 | 1,986
Noncurrent liabilities | (18) | (348) | (399)
Other, net | (33) | 120 | 419
Net cash provided by operating activities | 6,464 | 6,363 | 3,264
Property and equipment additions: |  |  |
Flight equipment, including advance payments | (3,645) | (4,495) | (1,596)
Ground property and equipment, including technology | (1,678) | (1,871) | (1,651)
Purchase of equity investments | (152) | (870) | 0
Purchase of short-term investments | (2,312) | (2,704) | (12,655)
Redemption of short-term investments | 4,547 | 2,804 | 15,036
Other, net | 92 | 212 | (32)
Net cash used in investing activities | (3,148) | (6,924) | (898)
Cash Flows From Financing Activities: |  |  |
Proceeds from long-term obligations | 878 | 0 | 1,902
Payments on debt and finance lease obligations | (4,071) | (4,475) | (5,834)
Cash dividends | (128) | 0 | 0
Other, net | (73) | (60) | 80
Net cash used in financing activities | (3,394) | (4,535) | (3,852)
Net Decrease in Cash, Cash Equivalents and Restricted Cash | (78) | (5,096) | (1,486)
Cash, cash equivalents and restricted cash at beginning of period | 3,473 | 8,569 | 10,055
Cash, cash equivalents and restricted cash at end of period | 3,395 | 3,473 | 8,569
Supplemental Disclosure of Cash Paid for Interest | 1,164 | 1,261 | 1,524
Non-Cash Transactions: |  |  |
Right-of-use assets acquired under operating leases | 661 | 531 | 2,113
Flight and ground equipment acquired under finance leases | 31 | 91 | 1,049
Operating leases converted to finance leases | 84 | 342 | 42
Equity investments and other financings | 0 | 330 | 0
Air traffic |  |  |
Changes in certain assets and liabilities: |  |  |
Liabilities and deferred revenue | (1,216) | 1,902 | 1,814
Loyalty program |  |  |
Changes in certain assets and liabilities: |  |  |
Liabilities and deferred revenue | $ 538 | $ 324 | $ 376

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