XML 39 R29.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) $ in Millions |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | ---
Oct. 31, 2017 | Nov. 30, 2017 | Mar. 31, 2018 USD ($) State Hospital Surgery_Center | Mar. 31, 2017 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of owned and operated hospitals | Hospital |  |  | 178 |
Number of freestanding surgery centers | Surgery_Center |  |  | 120 |
Number of facilities locations | State |  |  | 20 |
General and administrative expense |  |  | $ 81 | $ 82
Estimated implicit price concessions recorded as reductions to revenues and accounts receivable |  |  | $ 5,312 | $ 4,880
Percentage of sum of revenues and uncompensated care |  |  | 35.40% | 33.40%
Charity care amount |  |  | $ 1,879 | $ 1,086
Estimated costs of charity care |  |  | $ 775 | $ 682
Inpatient Services [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Performance obligations for inpatient/ outpatient services satisfied period |  |  | 5 days |
Maximum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Percentage of income of federal poverty level eligible for charity care | 200.00% | 400.00% |  |
Maximum [Member] | Outpatient Services [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Performance obligations for inpatient/ outpatient services satisfied period |  |  | 1 day |
Minimum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Percentage of income of federal poverty level eligible for charity care |  | 200.00% |  |

X
- Definition Charity care. + References No definition available. + Details
Name: | hca_CharityCare
Namespace Prefix: | hca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Estimated cost of uncompensated care. + References No definition available. + Details
Name: | hca_EstimatedCostOfUncompensatedCare
Namespace Prefix: | hca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Estimated implicit price concessions. + References No definition available. + Details
Name: | hca_EstimatedImplicitPriceConcessions
Namespace Prefix: | hca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of facilities locations. + References No definition available. + Details
Name: | hca_NumberOfFacilitiesLocations
Namespace Prefix: | hca_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of freestanding surgery centers. + References No definition available. + Details
Name: | hca_NumberOfFreestandingSurgeryCenters
Namespace Prefix: | hca_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of owned and operated hospitals. + References No definition available. + Details
Name: | hca_NumberOfOwnedAndOperatedHospitals
Namespace Prefix: | hca_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Patients treated at hospitals for nonelective care income less than or equal to specified percentage of the federal poverty level eligible for charity care. + References No definition available. + Details
Name: | hca_PatientsTreatedAtHospitalsForNonelectiveCareIncomeLessThanOrEqualToSpecifiedPercentageOfFederalPovertyLevelEligibleForCharityCare
Namespace Prefix: | hca_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of sum of revenues and uncompensated care. + References No definition available. + Details
Name: | hca_PercentageOfSumOfRevenuesAndUncompensatedCare
Namespace Prefix: | hca_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary of significant accounting policies. + References No definition available. + Details
Name: | hca_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | hca_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_GeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130556-203045 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=84173487&loc=SL51747714-108306 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ProductOrServiceAxis=hca_InpatientServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=hca_OutpatientServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |