$THC
TENET HEALTHCARE CORP Stock $thc

$thc Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000007031819000017 Filed on February 25, 2019

Income Statement

Concept	2017 Q4	2017 Q3	2017 Q2
Revenue	$4.978B	$4.586B	$4.802B
YoY Change	2.43%	-12.08%	-8.01%
Cost Of Revenue	$800.0M	$740.0M	$780.0M
YoY Change	3.49%	-3.52%	0.91%
Gross Profit	$4.178B	$3.846B	$4.022B
YoY Change	2.23%	-5.78%	-1.78%
Gross Profit Margin	83.93%	83.86%	83.76%
Selling, General & Admin	$2.284B	$2.264B	$2.346B
YoY Change	-1.72%	-1.91%	1.6%
% of Gross Profit	54.67%	58.87%	58.33%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$208.0M	$219.0M	$222.0M
YoY Change	-4.59%	6.83%	3.26%
% of Gross Profit	4.98%	5.69%	5.52%
Operating Expenses	$3.595B	$3.602B	$3.721B
YoY Change	-3.83%	-3.74%	0.13%
Operating Profit	$583.0M	$51.00M	$310.0M
YoY Change	67.05%	-84.96%	13.14%
Interest Expense	-$204.0M	$257.0M	$260.0M
YoY Change	3.55%	5.76%	6.56%
% of Operating Profit	-34.99%	503.92%	83.87%
Other Income/Expense, Net	-$8.000M	-$4.000M	-$5.000M
YoY Change		-42.86%	0.0%
Pretax Income	$224.0M	-$348.0M	$19.00M
YoY Change	672.41%	-491.01%	-24.0%
Income Tax	$78.00M	-$60.00M	-$12.00M
% Of Pretax Income	34.82%		-63.16%
Net Earnings	-$99.00M	-$289.0M	$32.00M
YoY Change	25.32%	-461.25%	-17.95%
Net Earnings / Revenue	-1.99%	-6.3%	0.67%
Basic Earnings Per Share	-$2.27	-$3.64	-$0.55
Diluted Earnings Per Share	-$2.27	-$3.64	-$0.55
COMMON SHARES
Basic Shares Outstanding	100.9M shares	100.8M shares	100.6M shares
Diluted Shares Outstanding		100.8M shares	100.6M shares

Balance Sheet

Concept	2017 Q4	2017 Q3	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$611.0M	$429.0M	$475.0M
YoY Change	-14.66%	-33.9%	-27.59%
Cash & Equivalents	$611.0M	$429.0M	$475.0M
Short-Term Investments
Other Short-Term Assets	$1.035B	$1.160B	$1.173B
YoY Change	-19.46%	-13.95%	-8.64%
Inventory	$289.0M	$297.0M	$316.0M
Prepaid Expenses
Receivables	$2.616B	$2.567B	$2.706B
Other Receivables	$5.000M	$14.00M	$7.000M
Total Short-Term Assets	$5.573B	$5.309B	$5.382B
YoY Change	6.01%	3.77%	7.79%
LONG-TERM ASSETS
Property, Plant & Equipment	$7.030B	$7.077B	$7.738B
YoY Change	-12.7%	-11.15%	-3.0%
Goodwill	$7.018B	$7.022B	$7.157B
YoY Change	-5.48%
Intangibles	$1.766B	$1.764B	$1.806B
YoY Change	-4.28%
Long-Term Investments	$958.0M	$1.253B	$1.238B
YoY Change	2.46%	-5.36%	-6.0%
Other Assets	$455.0M	$783.0M	$1.020B
YoY Change	-47.76%	-6.79%	27.98%
Total Long-Term Assets	$17.81B	$17.90B	$18.96B
YoY Change	-8.39%	-7.54%	-1.5%
TOTAL ASSETS
Total Short-Term Assets	$5.573B	$5.309B	$5.382B
Total Long-Term Assets	$17.81B	$17.90B	$18.96B
Total Assets	$23.39B	$23.21B	$24.34B
YoY Change	-5.33%	-5.17%	0.42%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.175B	$1.100B	$1.086B
YoY Change	-11.59%	-10.42%	-14.62%
Accrued Expenses	$1.104B	$1.136B	$988.0M
YoY Change	1.28%	-30.9%	-37.19%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$146.0M	$140.0M	$143.0M
YoY Change	-23.56%	-23.91%	-20.99%
Total Short-Term Liabilities	$4.332B	$4.139B	$4.337B
YoY Change	7.39%	-8.97%	-2.1%
LONG-TERM LIABILITIES
Long-Term Debt	$14.79B	$14.74B	$15.01B
YoY Change	-1.81%	2.92%	4.83%
Other Long-Term Liabilities	$631.0M	$604.0M	$598.0M
YoY Change	3.44%	-66.67%	-66.57%
Total Long-Term Liabilities	$631.0M	$604.0M	$598.0M
YoY Change	3.44%	-96.26%	-96.29%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.332B	$4.139B	$4.337B
Total Long-Term Liabilities	$631.0M	$604.0M	$598.0M
Total Liabilities	$20.98B	$20.70B	$21.51B
YoY Change	-1.16%	-13.57%	-9.33%
SHAREHOLDERS EQUITY
Retained Earnings	-$2.390B	-$2.161B	-$1.794B
YoY Change	37.2%
Common Stock	$7.000M	$7.000M	$7.000M
YoY Change	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	-$147.0M	$24.00M	$373.0M
YoY Change
Total Liabilities & Shareholders Equity	$23.39B	$23.21B	$24.34B
YoY Change	-5.33%	-5.17%	0.42%

Cashflow Statement

Concept	2017 Q4	2017 Q3	2017 Q2
OPERATING ACTIVITIES
Net Income	-$99.00M	-$289.0M	$32.00M
YoY Change	25.32%	-461.25%	-17.95%
Depreciation, Depletion And Amortization	$208.0M	$219.0M	$222.0M
YoY Change	-4.59%	6.83%	3.26%
Cash From Operating Activities	$491.0M	$308.0M	$215.0M
YoY Change	-267.58%	14.5%	-50.57%
INVESTING ACTIVITIES
Capital Expenditures	-$215.0M	-$144.0M	-$150.0M
YoY Change	-17.62%	-28.36%	-26.83%
Acquisitions
YoY Change
Other Investing Activities	$9.000M	$679.0M	$31.00M
YoY Change	-147.37%	-22733.33%	-150.82%
Cash From Investing Activities	-$206.0M	$535.0M	-$119.0M
YoY Change	-26.43%	-362.25%	-55.26%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-103.0M	-889.0M	-193.0M
YoY Change	-116.09%	1134.72%	-19.92%
NET CHANGE
Cash From Operating Activities	491.0M	308.0M	215.0M
Cash From Investing Activities	-206.0M	535.0M	-119.0M
Cash From Financing Activities	-103.0M	-889.0M	-193.0M
Net Change In Cash	182.0M	-46.00M	-97.00M
YoY Change	171.64%	557.14%	34.72%
FREE CASH FLOW
Cash From Operating Activities	$491.0M	$308.0M	$215.0M
Capital Expenditures	-$215.0M	-$144.0M	-$150.0M
Free Cash Flow	$706.0M	$452.0M	$365.0M
YoY Change	-2306.25%	-3.83%	-42.97%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0000070318
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CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
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CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2018	dei	Entity Registrant Name EntityRegistrantName	TENET HEALTHCARE CORPORATION
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
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CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	463000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-320000000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	181000000	USD
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	4000000	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	0	USD
CY2016	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTax	-6000000	USD
CY2018	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	1000000	USD
CY2017	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2016	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-1000000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	3000000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-5000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	466000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-320000000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	176000000	USD
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	355000000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	384000000	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	368000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	111000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-704000000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2016	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-187000000	USD
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	3000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-704000000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-192000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	108000000	USD
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-5000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	111000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-704000000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-192000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.06
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-7.00
CY2016	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.88
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.03
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.05
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.09
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.00
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.93
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.04
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-7.00
CY2016	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.88
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.03
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.05
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.07
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.00
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.93
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	102110000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	100592000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	99321000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	103881000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	100592000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	99321000	shares
CY2018	us-gaap	Profit Loss ProfitLoss	466000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-320000000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	176000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	29000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-42000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	73000000	USD
CY2018	thc	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Amortization Of Net Actuarial Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAmortizationOfNetActuarialGainLossArisingDuringPeriodBeforeTax	14000000	USD
CY2017	thc	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Amortization Of Net Actuarial Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAmortizationOfNetActuarialGainLossArisingDuringPeriodBeforeTax	14000000	USD
CY2016	thc	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Amortization Of Net Actuarial Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAmortizationOfNetActuarialGainLossArisingDuringPeriodBeforeTax	12000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	6000000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	0	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	2000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax	-37000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax	0	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-4000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	15000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-53000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	18000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	77000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-112000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-6000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	23000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-18000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	24000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	54000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-94000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	490000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-266000000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	82000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	355000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	384000000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	368000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	135000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-650000000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-286000000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	958000000	USD
CY2016	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	-54000000	USD
CY2016	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	111000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-94000000	USD
CY2016	thc	Adjustments To Additional Paid In Capital Purchase Sale Of Joint Venture Interest AdjustmentsToAdditionalPaidInCapitalPurchaseSaleOfJointVentureInterest	106000000	USD
CY2016	thc	Noncontrolling Interest Purchase Accounting Adjustment NoncontrollingInterestPurchaseAccountingAdjustment	225000000	USD
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	52000000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1082000000	USD
CY2017	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	-559000000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	123000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	54000000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	33000000	USD
CY2017	thc	Adjustments To Additional Paid In Capital Purchase Sale Of Joint Venture Interest AdjustmentsToAdditionalPaidInCapitalPurchaseSaleOfJointVentureInterest	3000000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	59000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	539000000	USD
CY2018	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	276000000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	148000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	24000000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Increase In Carrying Amount Of Redeemable Preferred Stock AdjustmentsToAdditionalPaidInCapitalIncreaseInCarryingAmountOfRedeemablePreferredStock	173000000	USD
CY2018	thc	Adjustments To Additional Paid In Capital Purchase Sale Of Joint Venture Interest AdjustmentsToAdditionalPaidInCapitalPurchaseSaleOfJointVentureInterest	106000000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	63000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	687000000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	466000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	-320000000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	176000000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	802000000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	870000000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	850000000	USD
CY2018	us-gaap	Health Care Organization Patient Service Revenue Provisionfor Bad Debts HealthCareOrganizationPatientServiceRevenueProvisionforBadDebts	0	USD
CY2017	us-gaap	Health Care Organization Patient Service Revenue Provisionfor Bad Debts HealthCareOrganizationPatientServiceRevenueProvisionforBadDebts	1434000000	USD
CY2016	us-gaap	Health Care Organization Patient Service Revenue Provisionfor Bad Debts HealthCareOrganizationPatientServiceRevenueProvisionforBadDebts	1449000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	150000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	200000000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	41000000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	46000000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	59000000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	68000000	USD
CY2018	thc	Restructuring Settlement Impairment Provisions And Acquisition Cost RestructuringSettlementImpairmentProvisionsAndAcquisitionCost	209000000	USD
CY2017	thc	Restructuring Settlement Impairment Provisions And Acquisition Cost RestructuringSettlementImpairmentProvisionsAndAcquisitionCost	541000000	USD
CY2016	thc	Restructuring Settlement Impairment Provisions And Acquisition Cost RestructuringSettlementImpairmentProvisionsAndAcquisitionCost	202000000	USD
CY2018	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-38000000	USD
CY2017	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-23000000	USD
CY2016	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-293000000	USD
CY2018	thc	Net Gainon Sale Consolidation And Deconsolidation Of Facilities NetGainonSaleConsolidationAndDeconsolidationOfFacilities	127000000	USD
CY2017	thc	Net Gainon Sale Consolidation And Deconsolidation Of Facilities NetGainonSaleConsolidationAndDeconsolidationOfFacilities	144000000	USD
CY2016	thc	Net Gainon Sale Consolidation And Deconsolidation Of Facilities NetGainonSaleConsolidationAndDeconsolidationOfFacilities	151000000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	1000000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-164000000	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	12000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	18000000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	13000000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	45000000	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	44000000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	134000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1448000000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-51000000	USD
CY2016	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	41000000	USD
CY2018	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	4000000	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	0	USD
CY2016	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-6000000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	21000000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	18000000	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	1000000	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1604000000	USD
CY2018	thc	Increase Decrease In Inventories And Other Assets Current IncreaseDecreaseInInventoriesAndOtherAssetsCurrent	-17000000	USD
CY2017	thc	Increase Decrease In Inventories And Other Assets Current IncreaseDecreaseInInventoriesAndOtherAssetsCurrent	35000000	USD
CY2016	thc	Increase Decrease In Inventories And Other Assets Current IncreaseDecreaseInInventoriesAndOtherAssetsCurrent	83000000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	3000000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	38000000	USD
CY2016	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	8000000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-152000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-10000000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-102000000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	26000000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	40000000	USD
CY2018	thc	Payments For Restructuring And Litigation Costs PaymentsForRestructuringAndLitigationCosts	163000000	USD
CY2017	thc	Payments For Restructuring And Litigation Costs PaymentsForRestructuringAndLitigationCosts	125000000	USD
CY2016	thc	Payments For Restructuring And Litigation Costs PaymentsForRestructuringAndLitigationCosts	691000000	USD
CY2018	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-5000000	USD
CY2017	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-5000000	USD
CY2016	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-6000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1049000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1200000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	558000000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	617000000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	707000000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	875000000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	113000000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	50000000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	117000000	USD
CY2018	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	543000000	USD
CY2017	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	827000000	USD
CY2016	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	573000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	49000000	USD
CY2018	thc	Proceeds From Sale Of Marketable Securities Long Term Investments And Other Assets ProceedsFromSaleOfMarketableSecuritiesLongTermInvestmentsAndOtherAssets	199000000	USD
CY2016	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	31000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	15000000	USD
CY2017	thc	Proceeds From Sale Of Marketable Securities Long Term Investments And Other Assets ProceedsFromSaleOfMarketableSecuritiesLongTermInvestmentsAndOtherAssets	36000000	USD
CY2016	thc	Proceeds From Sale Of Marketable Securities Long Term Investments And Other Assets ProceedsFromSaleOfMarketableSecuritiesLongTermInvestmentsAndOtherAssets	62000000	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	127000000	USD
CY2017	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	68000000	USD
CY2016	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	39000000	USD
CY2018	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	-15000000	USD
CY2017	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	10000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	7000000	USD
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-115000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	21000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-430000000	USD
CY2018	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	950000000	USD
CY2017	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	970000000	USD
CY2016	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	1895000000	USD
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	950000000	USD
CY2017	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	970000000	USD
CY2016	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1895000000	USD
CY2018	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	312000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	4139000000	USD
CY2016	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	154000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	23000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	3795000000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	760000000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	62000000	USD
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	12000000	USD
CY2018	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	288000000	USD
CY2017	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	258000000	USD
CY2016	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	218000000	USD
CY2018	us-gaap	Proceeds From Sale Of Interest In Corporate Unit ProceedsFromSaleOfInterestInCorporateUnit	20000000	USD
CY2017	us-gaap	Proceeds From Sale Of Interest In Corporate Unit ProceedsFromSaleOfInterestInCorporateUnit	31000000	USD
CY2016	us-gaap	Proceeds From Sale Of Interest In Corporate Unit ProceedsFromSaleOfInterestInCorporateUnit	22000000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	647000000	USD
CY2017	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	729000000	USD
CY2016	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	186000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	16000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	7000000	USD
CY2016	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	4000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	54000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1326000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	232000000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-200000000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-105000000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	360000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	611000000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	716000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	29000000	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	16000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1134000000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	356000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	411000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	611000000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	716000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	976000000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	939000000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	932000000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	25000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	56000000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	33000000	USD
CY2018	thc	Number Of Hospitals Operated By Subsidiaries NumberOfHospitalsOperatedBySubsidiaries	68	hospital
CY2018	thc	Number Of Surgical Hospitals NumberOfSurgicalHospitals	23	hospital
CY2018Q4	thc	Number Of Outpatient Centers NumberOfOutpatientCenters	475	center
CY2018	thc	Number Of Facilities Owned By Subsidiaries NumberOfFacilitiesOwnedBySubsidiaries	111	hospital
CY2018	us-gaap	Use Of Estimates UseOfEstimates	Use of Estimates<div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div>The preparation of financial statements, in conformity with accounting principles generally accepted in the United States of America (“GAAP”), requires us to make estimates and assumptions that affect the amounts reported in our Consolidated Financial Statements and these accompanying notes. We regularly evaluate the accounting policies and estimates we use. In general, we base the estimates on historical experience and on assumptions that we believe to be reasonable given the particular circumstances in which we operate. Although we believe all adjustments considered necessary for a fair presentation have been included, actual results may vary from those estimates. Financial and statistical information we report to other regulatory agencies may be prepared on a basis other than GAAP or using different assumptions or reporting periods and, therefore, may vary from amounts presented herein. Although we make every effort to ensure that the information we report to those agencies is accurate, complete and consistent with applicable reporting guidelines, we cannot be responsible for the accuracy of the information they make available to the public.
CY2018	thc	Incentive Payments For Technology Certification IncentivePaymentsForTechnologyCertification	3000000	USD
CY2017	thc	Incentive Payments For Technology Certification IncentivePaymentsForTechnologyCertification	9000000	USD
CY2016	thc	Incentive Payments For Technology Certification IncentivePaymentsForTechnologyCertification	32000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	411000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	611000000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	135000000	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	117000000	USD
CY2018	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	149000000	USD
CY2017	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	162000000	USD
CY2018	thc	Percentage Investee Results Reflected PercentageInvesteeResultsReflected	1
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	842000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	805000000	USD
CY2016Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Assets EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets	943000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	662000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	1223000000	USD
CY2016Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Assets EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets	991000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	313000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	354000000	USD
CY2016Q4	us-gaap	Equity Method Investment Summarized Financial Information Current Liabilities EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities	320000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	430000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	389000000	USD
CY2016Q4	us-gaap	Equity Method Investment Summarized Financial Information Noncurrent Liabilities EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities	345000000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	530000000	USD
CY2017Q4	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	490000000	USD
CY2016Q4	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	494000000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	2469000000	USD
CY2017	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	2907000000	USD
CY2016	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	2823000000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	599000000	USD
CY2017	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	558000000	USD
CY2016	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	573000000	USD
CY2018	thc	Equity Method Investment Summarized Financial Information Net Income Loss Attributable To Investee EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLossAttributableToInvestee	372000000	USD
CY2017	thc	Equity Method Investment Summarized Financial Information Net Income Loss Attributable To Investee EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLossAttributableToInvestee	363000000	USD
CY2016	thc	Equity Method Investment Summarized Financial Information Net Income Loss Attributable To Investee EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLossAttributableToInvestee	343000000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	150000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	144000000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	131000000	USD
CY2018	us-gaap	Malpractice Loss Contingency Discount Rate MalpracticeLossContingencyDiscountRate	0.0259
CY2017	us-gaap	Malpractice Loss Contingency Discount Rate MalpracticeLossContingencyDiscountRate	0.0233
CY2018Q4	thc	Percentage Of Net Operating Revenues Generated By General Hospitals PercentageOfNetOperatingRevenuesGeneratedByGeneralHospitals	0.80
CY2017Q4	thc	Percentage Of Net Operating Revenues Generated By General Hospitals PercentageOfNetOperatingRevenuesGeneratedByGeneralHospitals	0.82
CY2016Q4	thc	Percentage Of Net Operating Revenues Generated By General Hospitals PercentageOfNetOperatingRevenuesGeneratedByGeneralHospitals	0.83
CY2018Q4	thc	Allowance For Doubtful Accounts As Percent Of Accounts Receivable AllowanceForDoubtfulAccountsAsPercentOfAccountsReceivable	0.266
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2595000000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2616000000	USD
CY2018	us-gaap	Health Care Organization Health Care Costs Gross HealthCareOrganizationHealthCareCostsGross	764000000	USD
CY2017	us-gaap	Health Care Organization Health Care Costs Gross HealthCareOrganizationHealthCareCostsGross	769000000	USD
CY2016	us-gaap	Health Care Organization Health Care Costs Gross HealthCareOrganizationHealthCareCostsGross	747000000	USD
CY2018Q4	thc	Contract With Customer Asset Percentage To Be Reclassified To Receivable Within90 Days ContractWithCustomerAssetPercentageToBeReclassifiedToReceivableWithin90Days	0.89
CY2018	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	72000000	USD
CY2017	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	73000000	USD
CY2018	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	11000000	USD
CY2017	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	10000000	USD
CY2016	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	7000000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	28000000	USD
CY2017Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	35000000	USD
CY2018	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	209000000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	77000000	USD
CY2018	us-gaap	Restructuring Costs RestructuringCosts	115000000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	17000000	USD
CY2018	us-gaap	Disposal Group Not Discontinued Operation Loss Gain On Write Down DisposalGroupNotDiscontinuedOperationLossGainOnWriteDown	40000000	USD
CY2018	thc	Number Of Hospitals With Impairment Charges NumberOfHospitalsWithImpairmentCharges	2	hospital
CY2018Q4	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	130000000	USD
CY2018	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	4000000	USD
CY2018	us-gaap	Severance Costs1 SeveranceCosts1	68000000	USD
CY2018	us-gaap	Business Exit Costs1 BusinessExitCosts1	17000000	USD
CY2018	us-gaap	Other Restructuring Costs OtherRestructuringCosts	30000000	USD
CY2018	thc	Business Combination Acquisition Related Transaction Costs BusinessCombinationAcquisitionRelatedTransactionCosts	10000000	USD
CY2018	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	7000000	USD
CY2017	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	541000000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	402000000	USD
CY2017	us-gaap	Restructuring Costs RestructuringCosts	117000000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	22000000	USD
CY2017	us-gaap	Disposal Group Not Discontinued Operation Loss Gain On Write Down DisposalGroupNotDiscontinuedOperationLossGainOnWriteDown	364000000	USD
CY2017	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	31000000	USD
CY2017	thc	Number Of Equity Method Investments With Impairment Charges NumberOfEquityMethodInvestmentsWithImpairmentCharges	2	investment
CY2017	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	7000000	USD
CY2017	us-gaap	Severance Costs1 SeveranceCosts1	82000000	USD
CY2017	us-gaap	Business Exit Costs1 BusinessExitCosts1	15000000	USD
CY2017	us-gaap	Other Restructuring Costs OtherRestructuringCosts	20000000	USD
CY2017	thc	Business Combination Acquisition Related Transaction Costs BusinessCombinationAcquisitionRelatedTransactionCosts	6000000	USD
CY2017	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	16000000	USD
CY2016	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	202000000	USD
CY2016	us-gaap	Disposal Group Not Discontinued Operation Loss Gain On Write Down DisposalGroupNotDiscontinuedOperationLossGainOnWriteDown	54000000	USD
CY2016	thc	Number Of Hospitals With Impairment Charges NumberOfHospitalsWithImpairmentCharges	4	hospital
CY2016Q4	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	163000000	USD
CY2016	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	19000000	USD
CY2016	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	14000000	USD
CY2016	us-gaap	Severance Costs1 SeveranceCosts1	35000000	USD
CY2016	us-gaap	Other Restructuring Costs OtherRestructuringCosts	14000000	USD
CY2016	us-gaap	Business Exit Costs1 BusinessExitCosts1	14000000	USD
CY2016	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	52000000	USD
CY2016	thc	Business Combination Acquisition Related Transaction Costs BusinessCombinationAcquisitionRelatedTransactionCosts	20000000	USD
CY2016	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	32000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Including Current Maturities LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities	15010000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Repayments Of Principal In Next Twelve Months LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths	182000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Two LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo	2697000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Three LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree	1958000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Four LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour	3588000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Five LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive	1894000000	USD
CY2018Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal After Year Five LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive	4691000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	932000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	171000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	151000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	133000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	113000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	92000000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	272000000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	326000000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	340000000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	335000000	USD
CY2018	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	11000000	USD
CY2017	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	14000000	USD
CY2016	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	13000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	46000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	59000000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	60000000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	9.16
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7.64
CY2018Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.46
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.46
CY2017Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.49
CY2018Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2017Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2018Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y2M12D
CY2017Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P3Y
CY2017Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y2M12D
CY2018Q1	thc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Forfeiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate	0
CY2017Q3	thc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Forfeiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate	0
CY2017Q1	thc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Forfeiture Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate	0
CY2018Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0272
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0192
CY2017Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0215
CY2018	thc	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Percentage ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPercentage	1.000
CY2018	thc	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Percentage Of Total ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPercentageOfTotal	1.000
CY2018Q2	thc	Number Of New Directors NumberOfNewDirectors	2	member
CY2017Q4	thc	Number Of New Directors NumberOfNewDirectors	3	member
CY2018Q4	thc	Number Of New Directors NumberOfNewDirectors	1	member
CY2017Q4	thc	Number Of New Directors NumberOfNewDirectors	2	member
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	99000000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	128000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1455000000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1475000000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2000000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2000000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	56000000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	62000000	USD
CY2018	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-90000000	USD
CY2017	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	31000000	USD
CY2018	thc	Defined Benefit Plan Benefits Paid Or Employer Contribution DefinedBenefitPlanBenefitsPaidOrEmployerContribution	122000000	USD
CY2017	thc	Defined Benefit Plan Benefits Paid Or Employer Contribution DefinedBenefitPlanBenefitsPaidOrEmployerContribution	120000000	USD
CY2018	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	0	USD
CY2017	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	5000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1301000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1455000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	850000000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	786000000	USD
CY2018	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	-65000000	USD
CY2017	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	122000000	USD
CY2018	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	47000000	USD
CY2017	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	43000000	USD
CY2018	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	101000000	USD
CY2017	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	101000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	731000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	850000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-570000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-605000000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	49000000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	69000000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	521000000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	536000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	281000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	266000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	1299000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	1448000000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2000000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2000000	USD
CY2016	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2000000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	56000000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	62000000	USD
CY2016	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	69000000	USD
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	54000000	USD
CY2017	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	50000000	USD
CY2016	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	51000000	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-14000000	USD
CY2017	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-14000000	USD
CY2016	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-12000000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	18000000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	28000000	USD
CY2016	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	32000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-15000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	56000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-61000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-29000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	42000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-73000000	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-14000000	USD
CY2017	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-14000000	USD
CY2016	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-12000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-281000000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-266000000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-322000000	USD
CY2018Q4	thc	Defined Benefit Plan Expected Future Benefit Payments DefinedBenefitPlanExpectedFutureBenefitPayments	897000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	86000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	89000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	90000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	91000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	91000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	450000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-570000000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	49000000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	521000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	12214000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	11769000000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5221000000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	4739000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6993000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7030000000	USD
CY2018Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	2744000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1013000000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1731000000	USD
CY2017Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	2649000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	883000000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1766000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1053000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	147000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	131000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	112000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	99000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	85000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	479000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	185000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	172000000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	152000000	USD
CY2018Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	40000000	USD
CY2017Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	56000000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	956000000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	958000000	USD
CY2018Q4	us-gaap	Long Term Investments LongTermInvestments	996000000	USD
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	1014000000	USD
CY2018Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	30000000	USD
CY2017Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	32000000	USD
CY2018Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	44000000	USD
CY2017Q4	us-gaap	Deposits Assets Noncurrent DepositsAssetsNoncurrent	37000000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Noncurrent AccountsReceivableNetNoncurrent	231000000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Noncurrent AccountsReceivableNetNoncurrent	266000000	USD
CY2018Q4	thc	Land Heldfor Expansion Other Long Term Receivablesand Other Assets Noncurrent LandHeldforExpansionOtherLongTermReceivablesandOtherAssetsNoncurrent	155000000	USD
CY2017Q4	thc	Land Heldfor Expansion Other Long Term Receivablesand Other Assets Noncurrent LandHeldforExpansionOtherLongTermReceivablesandOtherAssetsNoncurrent	194000000	USD
CY2018Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	1456000000	USD
CY2017Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	1543000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-223000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-204000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	223000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	170000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	0	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-38000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	4000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	3000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	3000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	15000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	5000000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	3000000	USD
	us-gaap	Malpractice Insurance Annual Coverage Limit MalpracticeInsuranceAnnualCoverageLimit	850000000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-6000000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-4000000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12000000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	33000000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	23000000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	14000000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	27000000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	19000000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	26000000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	159000000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	202000000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	34000000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-10000000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2000000	USD
CY2016	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	41000000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7000000	USD
CY2018	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	149000000	USD
CY2017	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	200000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	176000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	219000000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	67000000	USD
CY2018	thc	Valuation Allowance Deferred Tax Asset Change In Amount Attributable To Expiration Or Worthlessness Of Unutilized State Net Operating Loss Carryovers ValuationAllowanceDeferredTaxAssetChangeInAmountAttributableToExpirationOrWorthlessnessOfUnutilizedStateNetOperatingLossCarryovers	-9000000	USD
CY2018	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	-9000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-6000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-70000000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	134000000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-35000000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	87000000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	23000000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4000000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	16000000	USD
CY2018	thc	Income Tax Reconciliation State Net Operating Losses Expired Net Of Federal Income Tax Benefit IncomeTaxReconciliationStateNetOperatingLossesExpiredNetOfFederalIncomeTaxBenefit	9000000	USD
CY2017	thc	Income Tax Reconciliation State Net Operating Losses Expired Net Of Federal Income Tax Benefit IncomeTaxReconciliationStateNetOperatingLossesExpiredNetOfFederalIncomeTaxBenefit	28000000	USD
CY2016	thc	Income Tax Reconciliation State Net Operating Losses Expired Net Of Federal Income Tax Benefit IncomeTaxReconciliationStateNetOperatingLossesExpiredNetOfFederalIncomeTaxBenefit	35000000	USD
CY2018	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	70000000	USD
CY2017	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	113000000	USD
CY2016	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	106000000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	8000000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	109000000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	29000000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	0	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	0	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	11000000	USD
CY2018	thc	Income Tax Reconciliation Nondeductible Expense Litigation IncomeTaxReconciliationNondeductibleExpenseLitigation	0	USD
CY2017	thc	Income Tax Reconciliation Nondeductible Expense Litigation IncomeTaxReconciliationNondeductibleExpenseLitigation	0	USD
CY2016	thc	Income Tax Reconciliation Nondeductible Expense Litigation IncomeTaxReconciliationNondeductibleExpenseLitigation	37000000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-1000000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	246000000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	thc	Effective Income Tax Rate Reconciliation Divestment Of Foreign Subsidiary Amount EffectiveIncomeTaxRateReconciliationDivestmentOfForeignSubsidiaryAmount	6000000	USD
CY2017	thc	Effective Income Tax Rate Reconciliation Divestment Of Foreign Subsidiary Amount EffectiveIncomeTaxRateReconciliationDivestmentOfForeignSubsidiaryAmount	30000000	USD
CY2016	thc	Effective Income Tax Rate Reconciliation Divestment Of Foreign Subsidiary Amount EffectiveIncomeTaxRateReconciliationDivestmentOfForeignSubsidiaryAmount	0	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	5000000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	15000000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	76000000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	134000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	0	USD
CY2017	thc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	252000000	USD
CY2017	thc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Change In Valuation Allowance Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetChangeInValuationAllowanceProvisionalIncomeTaxExpenseBenefit	6000000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Financing Arrangements DeferredTaxLiabilitiesFinancingArrangements	6000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	205000000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-25000000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-1000000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-6000000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-9000000	USD
CY2018	thc	Income Tax Reconciliation Prior Year Income Taxes And Change In Deferred Taxes IncomeTaxReconciliationPriorYearIncomeTaxesAndChangeInDeferredTaxes	5000000	USD
CY2017	thc	Income Tax Reconciliation Prior Year Income Taxes And Change In Deferred Taxes IncomeTaxReconciliationPriorYearIncomeTaxesAndChangeInDeferredTaxes	-4000000	USD
CY2016	thc	Income Tax Reconciliation Prior Year Income Taxes And Change In Deferred Taxes IncomeTaxReconciliationPriorYearIncomeTaxesAndChangeInDeferredTaxes	-12000000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	4000000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-3000000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	176000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	219000000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	67000000	USD
CY2017Q4	thc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Change In Valuation Allowance Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetChangeInValuationAllowanceProvisionalIncomeTaxExpenseBenefit	251000000	USD
CY2017	thc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	252000000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	246000000	USD
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$THC
TENET HEALTHCARE CORP Stock $thc

2017 Q4 Form 10-K Financial Statement

#000007031819000017 Filed on February 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$THC TENET HEALTHCARE CORP Stock $thc

2017 Q4 Form 10-K Financial Statement

#000007031819000017 Filed on February 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$THC
TENET HEALTHCARE CORP Stock $thc