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v3.23.1

Basis of Presentation and Significant Accounting Policies - Schedule of Revenues from Third Party Payers, Uninsured and Other Payers (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Revenues From Third Party Payers [Line Items] |  |
Revenues | $ 15,591 | $ 14,945
Revenues ratio from third party payers | 100.00% | 100.00%
Medicare [Member] |  |
Revenues From Third Party Payers [Line Items] |  |
Revenues from third party payers | $ 2,738 | $ 2,726
Revenues from third party payers, Ratio | 17.60% | 18.20%
Managed Medicare [Member] |  |
Revenues From Third Party Payers [Line Items] |  |
Revenues from third party payers | $ 2,559 | $ 2,324
Revenues from third party payers, Ratio | 16.40% | 15.60%
Medicaid [Member] |  |
Revenues From Third Party Payers [Line Items] |  |
Revenues from third party payers | $ 735 | $ 579
Revenues from third party payers, Ratio | 4.70% | 3.90%
Managed Medicaid [Member] |  |
Revenues From Third Party Payers [Line Items] |  |
Revenues from third party payers | $ 913 | $ 1,110
Revenues from third party payers, Ratio | 5.90% | 7.40%
Managed Care and Insurers [Member] |  |
Revenues From Third Party Payers [Line Items] |  |
Revenues | $ 145 |
Revenues from third party payers | $ 7,623 | $ 7,152
Revenues from third party payers, Ratio | 48.90% | 47.90%
International (Managed Care and Insurers) [Member] |  |
Revenues From Third Party Payers [Line Items] |  |
Revenues from third party payers | $ 375 | $ 356
Revenues from third party payers, Ratio | 2.40% | 2.40%
Other [Member] |  |
Revenues From Third Party Payers [Line Items] |  |
Revenues | $ 648 | $ 698
Other, Ratio | 4.10% | 4.60%

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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