Loss Contingency, Number Of Individuals

No definition available.

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- Definition

Represents the number of consolidated lawsuits.

+ References

No definition available.

+ Details

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Namespace Prefix:	thc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of hospitals.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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+ Details

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Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12021-110248

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

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- Details

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- Details

Name:	srt_RangeAxis=srt_MaximumMember
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CLAIMS AND LAWSUITS (Details) $ in Millions		1 Months Ended	3 Months Ended		12 Months Ended
CLAIMS AND LAWSUITS (Details) $ in Millions	Nov. 20, 2019 individual	Jun. 30, 2006 hospital	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) individual	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Oct. 31, 2019 USD ($)	Jul. 31, 2019 USD ($)	Jan. 31, 2017 lawsuit
Loss Contingencies
Number of individuals \| individual	3				3
Litigation and investigation costs					$ 141	$ 38	$ 23
Shareholder derivative litigation
Loss Contingencies
Number of consolidated lawsuits \| lawsuit										2
Maderazo V. VHS San Antonio
Loss Contingencies
Number of hospitals \| hospital		3
Oklahoma Surgical Hospital Qui Tam Action
Loss Contingencies
Estimated litigation liability								$ 66
Litigation and investigation costs			$ 1	$ 68
Maximum
Loss Contingencies
Loss contingency, estimate of possible loss									$ 63