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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities: |  |  |
Net income | $ 1,211,762 | $ 994,677 | $ 1,021,294
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] |  |  |
Depreciation and amortization | 680,615 | 630,435 | 615,152
Impairment charges | 0 | 0 | 124,892
Debt prepayment, refinancing and redemption charges | 0 | 86,957 | 33,402
Stock-based compensation expense | 102,209 | 91,458 | 67,850
Deferred income taxes | 60,483 | 240,848 | 41,723
Equity investment loss, net | 5,215 | 13,830 | 8,582
Loss on sales of business interests, net | 0 | 24,248 | 23,022
Other non-cash charges, net | 11,231 | 747 | 49,579
Changes in operating assets and liabilities, net of effect of acquisitions and divestitures: |  |  |
Accounts receivable | (138,140) | (21,087) | (79,957)
Inventories | 5,720 | (12,349) | 10,158
Other receivables and prepaid and other current assets | 128,661 | (79,277) | 2,790
Other long-term assets | (26,387) | (6,123) | 6,965
Accounts payable | (30,320) | 37,200 | (84,539)
Accrued compensation and benefits | (16,717) | (20,931) | (14,697)
Other current liabilities | (93,645) | 105,637 | 181,940
Income taxes | 36,921 | (87,391) | 95,645
Other long-term liabilities | (6,732) | (19,851) | (31,446)
Net Cash Provided by (Used in) Operating Activities, Total | 1,930,876 | 1,979,028 | 2,072,355
Cash flows from investing activities: |  |  |
Additions of property and equipment | (641,465) | (674,541) | (766,546)
Acquisitions | (187,050) | (182,013) | (100,861)
Proceeds from asset and business sales | 61,464 | 50,139 | 3,877,392
Purchase of debt investments held-to-maturity | (30,849) | (150,701) | (101,462)
Purchase of other debt and equity investments | (2,987) | (3,757) | (5,458)
Proceeds from debt investments held-to-maturity | 15,849 | 151,213 | 95,376
Proceeds from sale of other debt and equity investments | 12,030 | 3,491 | 3,676
Purchase of equity method investments | (13,924) | (22,341) | (9,366)
Distributions from equity method investments | 2,944 | 3,139 | 2,589
Payments to Acquire Other Investments | (745) | 0 | 0
Net Cash Provided by (Used in) Investing Activities, Total | (784,733) | (825,371) | 2,995,340
Cash flows from financing activities: |  |  |
Borrowings | 1,615,370 | 4,046,775 | 38,525,850
Payments on long-term debt | (861,115) | (4,110,304) | (40,520,722)
Deferred financing and debt redemption costs | (9,091) | (105,848) | (85,319)
Purchase of treasury stock | (1,538,626) | (1,458,442) | (2,383,816)
Distributions to noncontrolling interests | (244,033) | (253,118) | (233,123)
Net (payments) receipts related to stock purchases and awards | (60,001) | (975) |
Net (payments) receipts related to stock purchases and awards |  |  | 11,382
Contributions from noncontrolling interests | 31,754 | 42,966 | 57,317
Proceeds from sales of additional noncontrolling interests | 2,880 | 0 | 0
Purchases of noncontrolling interests | (20,104) | (7,831) | (68,019)
Net cash used in financing activities | (1,082,966) | (1,846,777) | (4,696,450)
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (10,007) | (13,808) | (1,760)
Less: Net increase (decrease) in cash, cash equivalents and restricted cash | 53,170 | (706,928) | 369,485
Cash, cash equivalents and restricted cash of continuing operations at beginning of the year | 501,790 | 1,208,718 | 415,420
Cash, cash equivalents and restricted cash of continuing operations at end of the year | 554,960 | 501,790 | 1,208,718
Discontinued Operations |  |  |
Cash flows from financing activities: |  |  |
Less: Net increase (decrease) in cash, cash equivalents and restricted cash | 0 | 0 | (423,813)
Continuing Operations |  |  |
Cash flows from financing activities: |  |  |
Less: Net increase (decrease) in cash, cash equivalents and restricted cash | $ 53,170 | $ (706,928) | $ 793,298

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