| Dec 31, 2010 | Dec 31, 2011 | Dec 31, 2012 | Dec 31, 2013 | Dec 31, 2014 | Dec 31, 2015 | Dec 31, 2016 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Net income | 1,152 | 94 | 133 | -104 | 76 | 78 | 176 | -320 | 466 | 154 | 768 | 1,476 | 1,001 | 1,311 | 4,064 |
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| Depreciation and amortization | - | - | - | - | - | - | 850 | 870 | 802 | 850 | 857 | 855 | 841 | 870 | 818 |
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| Deferred income tax expense (benefit) | -952 | 81 | 92 | -67 | 30 | 42 | 41 | 200 | 150 | 137 | -128 | 250 | 209 | 52 | -103 |
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| Stock-based compensation expense | 22 | 24 | 32 | 36 | 51 | 69 | 68 | 59 | 46 | 42 | 44 | 56 | 56 | 66 | 67 |
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| Impairment and restructuring charges, and acquisition-related costs | - | - | - | 103 | 153 | 318 | 202 | 541 | 209 | 185 | 290 | 85 | 226 | 137 | 102 |
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| Litigation and investigation costs | -12 | -55 | -5 | -31 | -25 | -291 | -293 | -23 | -38 | -141 | -44 | -116 | -70 | -47 | -35 |
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| Net gains on sales, consolidation and deconsolidation of facilities | - | - | - | - | - | - | - | - | 127 | -15 | 14 | 445 | 1 | 23 | 2,916 |
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| Loss from early extinguishment of debt | -57 | -117 | -4 | -348 | -24 | -1 | - | -164 | 1 | -227 | -316 | -74 | -109 | -11 | -8 |
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| Equity in earnings of unconsolidated affiliates, net of distributions received | - | - | - | - | - | - | - | 18 | 12 | 32 | 37 | 10 | -2 | 13 | 29 |
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| Amortization of Debt Issuance Costs and Discounts | - | 30 | 22 | 19 | 28 | 41 | 41 | 44 | 45 | 35 | 38 | 33 | 33 | 32 | 26 |
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| Net gains from the sale of investments and long-lived assets | - | - | - | - | - | - | - | - | - | - | - | - | 117 | 29 | 4 |
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| Other items, net | - | 15 | 12 | 33 | 40 | -59 | 1 | 18 | 21 | 15 | 29 | 33 | -13 | 4 | 4 |
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| Accounts receivable | 744 | 865 | 868 | 1,060 | 1,896 | 1,632 | 1,604 | 1,448 | 134 | 247 | -195 | 197 | 140 | 29 | -245 |
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| Inventories and other current assets | 17 | 38 | 59 | 130 | 314 | 130 | 83 | 35 | -17 | 94 | 145 | 52 | 64 | 139 | 86 |
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| Income taxes | -3 | 63 | 5 | - | -3 | -18 | 8 | 38 | 3 | -8 | -19 | -68 | 26 | -10 | -16 |
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| Increase (Decrease) in Accounts Payable and Accrued Liabilities | -84 | -35 | 9 | 38 | 505 | 68 | -51 | -10 | -152 | 36 | 1,302 | -584 | -898 | 215 | -30 |
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| Other long-term liabilities | -58 | -6 | 3 | 13 | 44 | 38 | 40 | 26 | -102 | 3 | 221 | 28 | -15 | 14 | -9 |
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| Payments for restructuring charges, acquisition-related costs, and litigation costs and settlements | 83 | 44 | 63 | 114 | 168 | 200 | 691 | 125 | 163 | 192 | 333 | 153 | 214 | 154 | 153 |
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| Net cash provided by operating activities | 472 | 497 | 593 | 589 | 687 | 1,026 | 558 | 1,200 | 1,049 | 1,233 | 3,407 | 1,568 | 1,083 | 2,374 | 2,047 |
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| Purchases of property and equipment | - | - | - | 691 | 933 | 842 | 875 | 707 | 617 | 670 | 540 | 658 | 762 | 751 | 931 |
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| Purchases of businesses or joint venture interests, net of cash acquired | - | - | - | 1,515 | 428 | 940 | 117 | 50 | 113 | 25 | 1,177 | 1,220 | 234 | 224 | 571 |
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| Proceeds from Divestiture of Businesses | 19 | - | 45 | 16 | 6 | 549 | 573 | 827 | 543 | 63 | 77 | 1,248 | 210 | 71 | 4,981 |
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| Proceeds from sales of marketable securities and long-term investments | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 63 |
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| Purchases of marketable securities and long-term investments | - | - | - | - | - | - | - | - | - | 62 | 44 | 108 | 92 | 104 | 94 |
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| Other items, net | -2 | 3 | 5 | -3 | -1 | 6 | 3 | 7 | 15 | - | -18 | 7 | 6 | 11 | 19 |
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| Net cash provided by (used in) investing activities | -420 | -503 | -662 | -2,164 | -1,322 | -1,317 | -430 | 21 | -115 | -619 | -1,608 | -714 | -808 | -969 | 3,429 |
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| Repayments of borrowings | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2,243 |
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| Proceeds from borrowings | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 23 |
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| Repurchases of common stock | - | 374 | 126 | 500 | - | 40 | - | - | - | - | - | - | 250 | 200 | 672 |
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| Debt issuance costs | 27 | 21 | 17 | 154 | 27 | 80 | 12 | 62 | - | 70 | 48 | 31 | 24 | 16 | - |
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| Distributions paid to noncontrolling interests | 8 | 10 | 15 | 27 | 45 | 110 | 218 | 258 | 288 | 307 | 287 | 423 | 560 | 594 | 681 |
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| Proceeds from Sale of Interest in Corporate Unit | - | - | - | - | - | - | 22 | 31 | 20 | 21 | 14 | 25 | 27 | 43 | 23 |
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| Purchases of noncontrolling interests | - | - | - | - | - | - | - | 729 | 647 | 11 | 39 | 27 | 100 | 167 | 200 |
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| Advances from managed care payers | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 342 |
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| Repayments of advances from managed care payers | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 310 |
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| Other items, net | 7 | 6 | 20 | 5 | 3 | 30 | 16 | 29 | 54 | 4 | 10 | -64 | -46 | 71 | 33 |
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| Net cash used in financing activities | -337 | -286 | 320 | 1,324 | 715 | 454 | 232 | -1,326 | -1,134 | -763 | 385 | -936 | -1,781 | -1,035 | -3,685 |
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| Net increase (decrease) in cash and cash equivalents | - | - | - | - | - | - | - | - | - | -149 | 2,184 | -82 | -1,506 | 370 | 1,791 |
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| Interest paid, net of capitalized interest | 402 | -347 | -376 | -426 | 726 | 859 | 932 | 939 | 976 | 946 | 962 | 937 | 848 | 882 | 851 |
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| Income tax payments, net | 34 | -10 | -13 | -6 | -8 | -7 | 33 | 56 | 25 | 12 | 12 | 92 | 161 | 243 | 1,271 |
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