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Accounting Policies - Additional Information (Detail) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2017 | Dec. 31, 2021 USD ($) Hospital Endoscopy_Center State Claim Surgery_Center | Dec. 31, 2020 USD ($) Claim | Dec. 31, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of owned and operated hospitals | Hospital |  | 182 |  |
Number of freestanding surgery centers | Surgery_Center |  | 125 |  |
Number of freestanding endoscopy centers | Endoscopy_Center |  | 21 |  |
Number of facilities locations | State |  | 20 |  |
General and administrative expense |  | $ 400 | $ 416 | $ 370
Adjustments to estimated reimbursement filed during respective year |  | 53 | 70 | 51
Adjustments to estimated reimbursement filed during previous years |  | (19) | 5 | 13
Estimated implicit price concessions recorded as reductions to revenues and accounts receivable |  | 6,784 | 6,108 |
Charity care amount |  | 13,644 | 13,763 | 13,260
Estimated costs of charity care |  | 1,542 | 1,652 | $ 1,591
Outstanding checks unpresented for payment |  | $ 536 | $ 495 |
Days revenues in accounts receivable |  | 49 days | 45 days | 50 days
Depreciation expense |  | $ 2,826 | $ 2,693 | $ 2,579
Goodwill impairments |  | 0 | 0 | 0
Goodwill acquired during period |  | 1,002 | 279 |
Intangible assets increased |  | 60 | 65 |
Intangible assets decreased due to amortization and other adjustments |  | 25 | 26 |
Gross carrying amount of intangible assets |  | 274 | 249 |
Accumulated amortization of intangible assets |  | 175 | 149 |
Gross carrying amount of indefinite-lived intangible assets |  | 304 | 269 |
Deferred loan costs |  | 446 | 411 |
Deferred loan costs, accumulated amortization |  | 198 | 175 |
Amortization of debt issuance costs |  | 27 | 30 | 30
Reserves for professional liability risks |  | 2,022 | 1,963 |
Current portion of professional liability risks reserves |  | 508 | 477 |
Provisions for losses related to professional liability risks |  | 453 | 435 | 497
Decrease in provision for professional liability risks |  | $ 87 | $ 112 | $ 50
Reserves for professional liability risks cover individual claims | Claim |  | 2,300 | 2,100 |
Net payments of professional and general liability claims |  | $ 384 | $ 292 |
Self-insured retention amount per occurrence |  | 15 |  |
Maximum amount losses per occurrence |  | 75 |  |
Reinsurance for professional liability risks retention minimum level of amount per occurrence |  | 25 |  |
Reinsurance for professional liability risks retention level of amount per occurrence |  | 35 |  |
Amounts receivable under reinsurance contracts recorded in other assets |  | 44 | 31 |
Amounts receivable under reinsurance contracts recorded in other current assets |  | 11 | 8 |
Foreign Currency Translation And Other [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Goodwill increase (decrease) |  | $ 75 | $ 9 |
Inpatient Services [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Performance obligations for inpatient/ outpatient services satisfied period |  | Our performance obligations for inpatient services are generally satisfied over periods that average approximately five days |  |
Maximum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Percentage of income of federal poverty level eligible for charity care | 400.00% |  |  |
Finite lived intangible asset useful life |  | 10 years |  |
Maximum [Member] | Outpatient Services [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Performance obligations for inpatient/ outpatient services satisfied period |  | Our performance obligations for outpatient services are generally satisfied over a period of less than one day |  |
Maximum [Member] | Building and Improvements [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives in years |  | 40 years |  |
Maximum [Member] | Equipment [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives in years |  | 10 years |  |
Minimum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Finite lived intangible asset useful life |  | 3 years |  |
Minimum [Member] | Building and Improvements [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives in years |  | 10 years |  |
Minimum [Member] | Equipment [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful lives in years |  | 4 years |  |

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