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Basis of Presentation and Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Cost of Revenue, Policy [Abstract] |  |  |
Corporate office costs | $ 63 | $ 60 |
Third Party Reimbursement [Abstract] |  |  |
Amounts due to third party payors | 115 |  | $ 118
Amounts due from third party payors | 108 |  | $ 114
Net Operating Revenues, Policy [Abstract] |  |  |
Charity care services charges excluded from net operating revenues | 363 | 229 |
Value of charity care services at the Company's standard charges included in contractual allowances | 41 | 26 |
Accounting for the Impairment or Disposal of Long-Lived Assets |  |  |
Gain (loss) on disposition of business | (21) |  |
CARES Act | Public Health And Social Services Emergency Fund | Paycheck Protection Program and Health Care Enhancement Act |  |  |
CARES Act and PPPHCE Act Funds [Abstract] |  |  |
Payments through the PHSSEF and various state and local programs | 42 | 3 |
CARES Act | Public Health And Social Services Emergency Fund | Accrued Liabilities - Other | Paycheck Protection Program and Health Care Enhancement Act |  |  |
CARES Act and PPPHCE Act Funds [Abstract] |  |  |
Payments through the PHSSEF and various state and local programs | 9 |  |
CARES Act | Operating Costs and Expenses | Public Health And Social Services Emergency Fund | Paycheck Protection Program and Health Care Enhancement Act |  |  |
CARES Act and PPPHCE Act Funds [Abstract] |  |  |
Payments through the PHSSEF and various state and local programs | 47 | $ 82 |
Adjustment for Carrying Value of Other Long-Lived Assets at Underperforming Hospitals |  |  |
Accounting for the Impairment or Disposal of Long-Lived Assets |  |  |
Impairment of long-lived assets held for sale | 27 |  |
Hospitals Sold or Deemed Held for Sale | Certain Hospitals |  |  |
Accounting for the Impairment or Disposal of Long-Lived Assets |  |  |
Gain (loss) on disposition of business | (2) |  |
Hospitals Closed |  |  |
Accounting for the Impairment or Disposal of Long-Lived Assets |  |  |
Gain (loss) on disposition of business | (8) |  |
Shared Service Center |  |  |
Accounting for the Impairment or Disposal of Long-Lived Assets |  |  |
Gain (loss) on disposition of business | $ (5) |  |

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