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Basis of Presentation and Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2018
Accounting Policies [Abstract] |
Schedule of Revenues from Third Party Payers, Uninsured and Other Payers | Our revenues from third-party payers and others (including uninsured patients) for the quarters and nine months ended September 30, 2018 and 2017 are summarized in the following table (dollars in millions):
|  | Quarter |
|  | 2018 |  |  | Ratio |  |  | 2017 |  |  | Ratio |
Medicare |  | $ | 2,404 |  |  |  | 21.0 | % |  | $ | 2,298 |  |  |  | 21.5 | %
Managed Medicare |  |  | 1,344 |  |  |  | 11.7 |  |  |  | 1,122 |  |  |  | 10.5 |
Medicaid |  |  | 338 |  |  |  | 3.0 |  |  |  | 286 |  |  |  | 2.7 |
Managed Medicaid |  |  | 622 |  |  |  | 5.4 |  |  |  | 537 |  |  |  | 5.0 |
Managed care and insurers |  |  | 6,026 |  |  |  | 52.6 |  |  |  | 5,605 |  |  |  | 52.4 |
International (managed care and insurers) |  |  | 273 |  |  |  | 2.4 |  |  |  | 276 |  |  |  | 2.6 |
Other |  |  | 444 |  |  |  | 3.9 |  |  |  | 572 |  |  |  | 5.3 |
Revenues |  | $ | 11,451 |  |  |  | 100.0 | % |  | $ | 10,696 |  |  |  | 100.0 | %
|  | Nine Months |
|  | 2018 |  |  | Ratio |  |  | 2017 |  |  | Ratio |
Medicare |  | $ | 7,353 |  |  |  | 21.4 | % |  | $ | 6,931 |  |  |  | 21.6 | %
Managed Medicare |  |  | 4,088 |  |  |  | 11.9 |  |  |  | 3,463 |  |  |  | 10.8 |
Medicaid |  |  | 976 |  |  |  | 2.8 |  |  |  | 956 |  |  |  | 3.0 |
Managed Medicaid |  |  | 1,769 |  |  |  | 5.1 |  |  |  | 1,653 |  |  |  | 5.2 |
Managed care and insurers |  |  | 18,081 |  |  |  | 52.6 |  |  |  | 16,957 |  |  |  | 52.9 |
International (managed care and insurers) |  |  | 873 |  |  |  | 2.5 |  |  |  | 814 |  |  |  | 2.5 |
Other |  |  | 1,263 |  |  |  | 3.7 |  |  |  | 1,278 |  |  |  | 4.0 |
Revenues |  | $ | 34,403 |  |  |  | 100.0 | % |  | $ | 32,052 |  |  |  | 100.0 | %
Schedule of Estimated Cost of Uncompensated Care | A summary of the estimated cost of total uncompensated care for the quarters and nine months ended September 30, 2018 and 2017 follows (dollars in millions):
|  | Quarter |  |  | Nine Months |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Patient care costs (salaries and benefits, supplies, other operating expenses and depreciation and amortization) |  | $ | 9,946 |  |  | $ | 9,472 |  |  | $ | 29,684 |  |  | $ | 27,798 |
Cost-to-charges ratio (patient care costs as percentage of gross patient charges) |  |  | 12.7 | % |  |  | 13.4 | % |  |  | 12.6 | % |  |  | 13.1 | %
Total uncompensated care |  | $ | 6,786 |  |  | $ | 6,089 |  |  | $ | 19,524 |  |  | $ | 17,137 |
Multiply by the cost-to-charges ratio |  |  | 12.7 | % |  |  | 13.4 | % |  |  | 12.6 | % |  |  | 13.1 | %
Estimated cost of total uncompensated care |  | $ | 862 |  |  | $ | 816 |  |  | $ | 2,460 |  |  | $ | 2,245 |

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