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v3.25.3

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 | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Revenues From Third Party Payers [Line Items] |  |  |  |
Revenues | $ 19,161 | $ 17,487 | $ 56,087 | $ 52,318
Revenues ratio from third party payers | 100.00% | 100.00% | 100.00% | 100.00%
Medicare [Member] |  |  |  |
Revenues From Third Party Payers [Line Items] |  |  |  |
Revenues from third party payers | $ 2,728 | $ 2,584 | $ 8,426 | $ 8,043
Revenues from third party payers, Ratio | 14.20% | 14.80% | 15.00% | 15.40%
Managed Medicare [Member] |  |  |  |
Revenues From Third Party Payers [Line Items] |  |  |  |
Revenues from third party payers | $ 3,306 | $ 2,949 | $ 9,957 | $ 8,888
Revenues from third party payers, Ratio | 17.30% | 16.90% | 17.80% | 17.00%
Medicaid [Member] |  |  |  |
Revenues From Third Party Payers [Line Items] |  |  |  |
Revenues from third party payers | $ 1,783 | $ 1,127 | $ 4,413 | $ 3,316
Revenues from third party payers, Ratio | 9.30% | 6.40% | 7.90% | 6.30%
Managed Medicaid [Member] |  |  |  |
Revenues From Third Party Payers [Line Items] |  |  |  |
Revenues from third party payers | $ 949 | $ 1,031 | $ 2,727 | $ 3,042
Revenues from third party payers, Ratio | 4.90% | 5.90% | 4.90% | 5.80%
Managed Care and Insurers [Member] |  |  |  |
Revenues From Third Party Payers [Line Items] |  |  |  |
Revenues from third party payers | $ 9,267 | $ 8,497 | $ 27,432 | $ 25,591
Revenues from third party payers, Ratio | 48.40% | 48.60% | 48.80% | 49.00%
International (Managed Care and Insurers) [Member] |  |  |  |
Revenues From Third Party Payers [Line Items] |  |  |  |
Revenues from third party payers | $ 484 | $ 424 | $ 1,390 | $ 1,252
Revenues from third party payers, Ratio | 2.50% | 2.40% | 2.50% | 2.40%
Other [Member] |  |  |  |
Revenues From Third Party Payers [Line Items] |  |  |  |
Revenues | $ 644 | $ 875 | $ 1,742 | $ 2,186
Other, Ratio | 3.40% | 5.00% | 3.10% | 4.10%

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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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