$LH
LABCORP HOLDINGS INC. Stock $lh

$lh Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000092014824000014 Filed on February 26, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$3.177B	$3.033B	$12.16B
YoY Change	-15.92%	-17.44%	-18.25%
Cost Of Revenue	$2.279B	$2.212B	$8.797B
YoY Change	-18.69%	-18.21%	-16.16%
Gross Profit	$897.3M	$821.4M	$3.365B
YoY Change	-7.94%	-15.3%	-23.27%
Gross Profit Margin	28.25%	27.08%	27.67%
Selling, General & Admin	$508.4M	$532.9M	$2.021B
YoY Change	-8.16%	-0.67%	1.24%
% of Gross Profit	56.66%	64.88%	60.07%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$154.5M	$146.4M	$577.3M
YoY Change	-6.87%	-6.27%	-8.93%
% of Gross Profit	17.22%	17.82%	17.16%
Operating Expenses	$508.4M	$592.1M	$2.241B
YoY Change	-18.38%	-0.84%	12.25%
Operating Profit	$321.3M	$229.3M	$1.124B
YoY Change	-8.67%	-38.48%	-36.65%
Interest Expense	$46.90M	-$42.50M	-$172.2M
YoY Change	-192.69%	-51.48%	-195.51%
% of Operating Profit	14.6%	-18.53%	-15.32%
Other Income/Expense, Net	$20.00M	$18.20M	$15.50M
YoY Change	-258.73%	-56.04%	-161.26%
Pretax Income	$297.4M	-$147.1M	$568.9M
YoY Change	7.06%	-430.56%	-56.93%
Income Tax	$69.10M	$19.70M	$188.5M
% Of Pretax Income	23.23%		33.13%
Net Earnings	$228.0M	-$167.1M	$418.0M
YoY Change	7.09%	-319.58%	-67.32%
Net Earnings / Revenue	7.18%	-5.51%	3.44%
Basic Earnings Per Share	$2.71		$4.80
Diluted Earnings Per Share	$2.69	-$1.97	$4.77
COMMON SHARES
Basic Shares Outstanding	84.10M shares	84.90M shares	87.10M shares
Diluted Shares Outstanding	84.70M shares		87.60M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$99.30M	$536.8M	$536.8M
YoY Change	-74.79%	24.84%	24.84%
Cash & Equivalents	$99.30M	$536.8M	$536.8M
Short-Term Investments
Other Short-Term Assets	$678.1M	$655.3M	$655.3M
YoY Change	-11.91%	-7.31%	-7.31%
Inventory	$475.0M	$474.6M	$474.6M
Prepaid Expenses	$678.1M	$655.3M
Receivables	$2.084B	$2.099B	$2.099B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$3.457B	$3.765B	$3.765B
YoY Change	-26.38%	-18.59%	-18.59%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.898B	$2.912B	$2.912B
YoY Change	-1.57%	-1.5%	-3.94%
Goodwill	$6.219B	$6.143B
YoY Change	-23.37%	-24.36%
Intangibles	$3.394B	$3.342B
YoY Change	-13.25%	-15.33%
Long-Term Investments	$17.70M	$26.90M	$26.90M
YoY Change	-73.1%	-59.06%	-59.06%
Other Assets	$546.0M	$536.5M	$536.5M
YoY Change	16.97%	23.99%	46.83%
Total Long-Term Assets	$13.07B	$12.96B	$12.96B
YoY Change	-15.68%	-16.55%	-16.55%
TOTAL ASSETS
Total Short-Term Assets	$3.457B	$3.765B	$3.765B
Total Long-Term Assets	$13.07B	$12.96B	$12.96B
Total Assets	$16.53B	$16.73B	$16.73B
YoY Change	-18.16%	-17.02%	-17.02%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$695.5M	$827.5M	$827.5M
YoY Change	-21.03%	-11.48%	-11.48%
Accrued Expenses	$649.3M	$969.8M	$969.8M
YoY Change	-41.54%	-9.26%	-12.49%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$2.048B	$1.006B	$1.006B
YoY Change	565.98%	227.43%	227.43%
Total Short-Term Liabilities	$3.942B	$3.225B	$3.225B
YoY Change	36.59%	4.77%	4.77%
LONG-TERM LIABILITIES
Long-Term Debt	$3.048B	$4.133B	$4.133B
YoY Change	-40.64%	-17.97%	-19.31%
Other Long-Term Liabilities	$468.2M	$1.058B	$1.058B
YoY Change	-56.72%	150.28%	-4.02%
Total Long-Term Liabilities	$3.516B	$5.192B	$5.192B
YoY Change	-43.44%	-4.95%	-16.6%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.942B	$3.225B	$3.225B
Total Long-Term Liabilities	$3.516B	$5.192B	$5.192B
Total Liabilities	$8.556B	$8.850B	$8.850B
YoY Change	-13.21%	-11.85%	-12.01%
SHAREHOLDERS EQUITY
Retained Earnings	$8.055B	$7.888B
YoY Change	-24.93%	-25.45%
Common Stock	$89.70M	$46.10M
YoY Change	60.75%	469.14%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$7.960B	$7.875B	$7.875B
YoY Change
Total Liabilities & Shareholders Equity	$16.53B	$16.73B	$16.73B
YoY Change	-18.16%	-17.02%	-17.02%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$228.0M	-$167.1M	$418.0M
YoY Change	7.09%	-319.58%	-67.32%
Depreciation, Depletion And Amortization	$154.5M	$146.4M	$577.3M
YoY Change	-6.87%	-6.27%	-8.93%
Cash From Operating Activities	-$29.80M	$579.6M	$1.328B
YoY Change	-124.59%	-11.32%	-32.12%
INVESTING ACTIVITIES
Capital Expenditures	$133.8M	$167.2M	$453.6M
YoY Change	42.49%	41.82%	-5.87%
Acquisitions	$259.2M		$671.5M
YoY Change	-129700.0%		-42.31%
Other Investing Activities	-$259.3M	-$163.4M	-$717.9M
YoY Change	4370.69%	5.15%	-38.66%
Cash From Investing Activities	-$393.1M	-$330.6M	-$1.172B
YoY Change	294.28%	20.97%	-29.09%
FINANCING ACTIVITIES
Cash Dividend Paid	$62.10M
YoY Change	-3.57%
Common Stock Issuance & Retirement, Net			-$945.6M
YoY Change			-185.96%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$11.70M	-446.5M	-59.30M
YoY Change	-80.69%	19.83%	-95.52%
NET CHANGE
Cash From Operating Activities	-$29.80M	579.6M	1.328B
Cash From Investing Activities	-$393.1M	-330.6M	-1.172B
Cash From Financing Activities	-$11.70M	-446.5M	-59.30M
Net Change In Cash	-$437.5M	-197.5M	96.90M
YoY Change	1018.93%	-2664.94%	-109.29%
FREE CASH FLOW
Cash From Operating Activities	-$29.80M	$579.6M	$1.328B
Capital Expenditures	$133.8M	$167.2M	$453.6M
Free Cash Flow	-$163.6M	$412.4M	$874.1M
YoY Change	-699.27%	-23.02%	-40.7%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	us-gaap	Net Income Loss NetIncomeLoss	1279100000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000920148
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	32700000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	30800000	usd
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	83900000	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	88200000	shares
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#PropertyPlantAndEquipmentNet
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAssetsNoncurrent
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAssetsNoncurrent
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	1-11353
CY2023	dei	Entity Registrant Name EntityRegistrantName	LABORATORY CORPORATION OF AMERICA HOLDINGS
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-3757370
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	358 South Main Street
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Burlington,
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	NC
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	27215
CY2023	dei	City Area Code CityAreaCode	336
CY2023	dei	Local Phone Number LocalPhoneNumber	229-1127
CY2023	dei	Security12b Title Security12bTitle	Common Stock, $0.10 par value
CY2023	dei	Trading Symbol TradingSymbol	LH
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	17300000000	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	84100000	shares
CY2023Q4	lh	Disposal Group Including Discontinued Operation Fortrea Senior Notes DisposalGroupIncludingDiscontinuedOperationFortreaSeniorNotes	570000000.0	usd
CY2023Q4	lh	Disposal Group Including Discontinued Operation Fortrea Senior Notes Interest Rate DisposalGroupIncludingDiscontinuedOperationFortreaSeniorNotesInterestRate	0.07500
CY2023Q4	lh	Disposal Group Including Discontinued Operation Fortrea Distribution DisposalGroupIncludingDiscontinuedOperationFortreaDistribution	1600000000	usd
CY2023Q4	lh	Disposal Group Including Discontinued Operation Fortrea Credit Facilities DisposalGroupIncludingDiscontinuedOperationFortreaCreditFacilities	1520000000	usd
CY2023Q4	lh	Disposal Group Including Discontinued Operation Fortrea Distribution DisposalGroupIncludingDiscontinuedOperationFortreaDistribution	1600000000	usd
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CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	725600000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	1436500000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	418000000.0	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	1279100000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.35
CY2022	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	11.00
CY2023	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.33
CY2022	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	10.94
CY2023	lh	Percentof Revenue Contributed PercentofRevenueContributed	1
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CY2023	dei	Auditor Firm AuditorFirmId	34
CY2023	dei	Auditor Name AuditorName	Deloitte & Touche LLP
CY2023	dei	Auditor Location AuditorLocation	Raleigh, North Carolina
CY2023	dei	Auditor Name AuditorName	Deloitte & Touche LLP
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CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1785500000	usd
CY2023Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	185400000	usd
CY2022Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	211800000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	474600000	usd
CY2022Q4	us-gaap	Inventory Net InventoryNet	470600000	usd
CY2023Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	655300000	usd
CY2022Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	610400000	usd
CY2023Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	usd
CY2022Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	1226100000	usd
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CY2023Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	26900000	usd
CY2022Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	65700000	usd
CY2023Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	0	usd
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CY2022	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	261700000	usd
CY2021	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	usd
CY2023	lh	Net Restructuring And Other Special Charges NetRestructuringAndOtherSpecialCharges	49100000	usd
CY2022	lh	Net Restructuring And Other Special Charges NetRestructuringAndOtherSpecialCharges	54000000.0	usd
CY2021	lh	Net Restructuring And Other Special Charges NetRestructuringAndOtherSpecialCharges	24000000.0	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	725600000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	1436500000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	3048600000	usd
CY2023	us-gaap	Interest Expense InterestExpense	199600000	usd
CY2022	us-gaap	Interest Expense InterestExpense	179800000	usd
CY2021	us-gaap	Interest Expense InterestExpense	211800000	usd
CY2023	us-gaap	Investment Income Net InvestmentIncomeNet	28800000	usd
CY2022	us-gaap	Investment Income Net InvestmentIncomeNet	7500000	usd
CY2021	us-gaap	Investment Income Net InvestmentIncomeNet	8800000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1400000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5400000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	26500000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	15500000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-32200000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	15500000	usd
CY2023	lh	Income Lossfrom Continuing Operations Before Income Taxesand Noncontrolling Interest IncomeLossfromContinuingOperationsBeforeIncomeTaxesandNoncontrollingInterest	568900000	usd
CY2022	lh	Income Lossfrom Continuing Operations Before Income Taxesand Noncontrolling Interest IncomeLossfromContinuingOperationsBeforeIncomeTaxesandNoncontrollingInterest	1237400000	usd
CY2021	lh	Income Lossfrom Continuing Operations Before Income Taxesand Noncontrolling Interest IncomeLossfromContinuingOperationsBeforeIncomeTaxesandNoncontrollingInterest	2887600000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	188500000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	233900000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	690000000.0	usd
CY2023	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	380400000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1003500000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	2197600000	usd
CY2023	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	38800000	usd
CY2022	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	277100000	usd
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	181900000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	419200000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	1280600000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	2379500000	usd
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1200000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1500000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2200000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	2377300000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.35
CY2022	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	11.00
CY2021	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	22.71
CY2023	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0.45
CY2022	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	3.04
CY2021	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	1.88
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.80
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.05
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	24.60
CY2023	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.33
CY2022	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	10.94
CY2021	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	22.52
CY2023	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0.44
CY2022	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	3.03
CY2021	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	1.87
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.77
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	13.97
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	24.39
CY2023	us-gaap	Profit Loss ProfitLoss	419200000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	1280600000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	2379500000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	183100000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-336400000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-104600000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-14600000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-44800000	usd
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	181900000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	577300000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	537200000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-91700000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	197700000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-291600000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-12900000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1800000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	9700000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	17100000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	195900000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-301300000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-30000000.0	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	615100000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	979300000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2349500000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1200000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	1500000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	2200000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	613900000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	977800000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2347300000	usd
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	9000000.0	usd
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	110300000	usd
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	9479200000	usd
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-161900000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	9436600000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	2377300000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-30000000.0	usd
CY2021	lh	Issuance Of Common Stock Under Employee Stock Plans IssuanceOfCommonStockUnderEmployeeStockPlans	51700000	usd
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	47400000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	153700000	usd
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1668500000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	10273400000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	1279100000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-301300000	usd
CY2022	us-gaap	Dividends Cash DividendsCash	198700000	usd
CY2022	lh	Issuance Of Common Stock Under Employee Stock Plans IssuanceOfCommonStockUnderEmployeeStockPlans	50600000	usd
CY2022	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	50600000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	144100000	usd
CY2022	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1100000000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	10096600000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	418000000.0	usd
CY2023	us-gaap	Stockholders Equity Note Spinoff Transaction StockholdersEquityNoteSpinoffTransaction	-1732000000	usd
CY2023	us-gaap	Dividends Cash DividendsCash	256100000	usd
CY2023	lh	Issuance Of Common Stock Under Employee Stock Plans IssuanceOfCommonStockUnderEmployeeStockPlans	55200000	usd
CY2023	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	40900000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	147300000	usd
CY2023	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1009000000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	7875000000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	419200000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	1280600000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	2379500000	usd
CY2023	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	38800000	usd
CY2022	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	277100000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	577000000.0	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	128700000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	116800000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	132900000	usd
CY2023	lh	Depreciation And Amortization Of Leased Assets DepreciationAndAmortizationOfLeasedAssets	168000000.0	usd
CY2022	lh	Depreciation And Amortization Of Leased Assets DepreciationAndAmortizationOfLeasedAssets	172500000	usd
CY2021	lh	Depreciation And Amortization Of Leased Assets DepreciationAndAmortizationOfLeasedAssets	164000000.0	usd
CY2023	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	349000000.0	usd
CY2022	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	261700000	usd
CY2021	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	usd
CY2023	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	78100000	usd
CY2022	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-26300000	usd
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	37300000	usd
CY2023	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	38900000	usd
CY2022	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	23000000.0	usd
CY2021	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-34100000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	103800000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-46500000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-267400000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	-28500000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	23400000	usd
CY2021	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	41100000	usd
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	700000	usd
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	45500000	usd
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-2800000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	25800000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	244100000	usd
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	41500000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-42400000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	285400000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-5300000	usd
CY2023	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	105500000	usd
CY2022	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	67800000	usd
CY2021	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	3800000	usd
CY2023	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-323200000	usd
CY2022	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-462900000	usd
CY2021	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-339900000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1327700000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1955900000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3109600000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	453600000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	429300000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	421500000	usd
CY2023	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	29000000.0	usd
CY2022	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	17400000	usd
CY2021	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	27800000	usd
CY2023	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	600000	usd
CY2022	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1400000	usd
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	87300000	usd
CY2023	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	6700000	usd
CY2022	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	5200000	usd
CY2021	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	13200000	usd
CY2023	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	usd
CY2022	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	2900000	usd
CY2021	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	usd
CY2023	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	0	usd
CY2022	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	1600000	usd
CY2021	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	0	usd
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	671500000	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1164000000	usd
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	496900000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1171500000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1652200000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-884600000	usd
CY2023	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	1000000000	usd
CY2023	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	300000000.0	usd
CY2022	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	usd
CY2021	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	1000000000	usd
CY2023	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	usd
CY2022	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	usd
CY2021	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	375000000.0	usd
CY2023	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	2488200000	usd
CY2022	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	787400000	usd
CY2021	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	usd
CY2023	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	2488200000	usd
CY2022	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	787400000	usd
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	usd
CY2023	lh	Excess Tax Benefit Share Based Compensation Financing Activities ExcessTaxBenefitShareBasedCompensationFinancingActivities	39800000	usd
CY2022	lh	Excess Tax Benefit Share Based Compensation Financing Activities ExcessTaxBenefitShareBasedCompensationFinancingActivities	50600000	usd
CY2021	lh	Excess Tax Benefit Share Based Compensation Financing Activities ExcessTaxBenefitShareBasedCompensationFinancingActivities	47500000	usd
CY2023	lh	Net Proceeds From Issuance Of Stock To Employees NetProceedsFromIssuanceOfStockToEmployees	54400000	usd
CY2022	lh	Net Proceeds From Issuance Of Stock To Employees NetProceedsFromIssuanceOfStockToEmployees	50600000	usd
CY2021	lh	Net Proceeds From Issuance Of Stock To Employees NetProceedsFromIssuanceOfStockToEmployees	51700000	usd
CY2023	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	254000000.0	usd
CY2022	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	195200000	usd
CY2021	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	0	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1000000000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1100000000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1668500000	usd
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-19600000	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-27000000.0	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-26500000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-59300000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1322200000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2065800000	usd
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9900000	usd
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-24200000	usd
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-7300000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	106800000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1042700000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	151900000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	430000000.0	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1472700000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1320800000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	536800000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	320600000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1381400000	usd
CY2023Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	67000	employee
CY2023	lh	Cost Method Investments Maximum Ownership Percentage CostMethodInvestmentsMaximumOwnershipPercentage	0.20
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:3pt;margin-top:7pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:7pt;margin-top:3pt;text-align:justify;text-indent:15.75pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with generally accepted accounting principles requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reported periods. Significant estimates include implicit price concessions, revenue estimates, the allowances for doubtful accounts, deferred tax assets, fair values of acquired assets and assumed liabilities in business combinations, fair value of goodwill and indefinite-lived intangible assets, amortization lives for acquired intangible assets, and accruals for self-insurance reserves, litigation reserves and pensions. Actual results could differ from those estimates.</span></div><div style="margin-bottom:7pt;margin-top:3pt;text-align:justify;text-indent:13.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The extent to which the COVID-19 pandemic has and will continue to impact the Company’s business and financial results depend on numerous evolving factors including, but not limited to the magnitude and duration of the COVID-19 pandemic, the impact to worldwide macroeconomic conditions including interest rates, employment rates and health insurance coverage, the speed of the anticipated recovery, and governmental and business reactions to the pandemic. The Company assessed certain accounting matters that generally require consideration of forecasted financial information in context with the information reasonably available to the Company and the unknown future impacts of COVID-19 as of December 31, 2023, and through the date of this Annual Report. The accounting matters assessed included, but were not limited to, the Company’s implicit price concessions and credit losses, equity investments, and the carrying value of goodwill and other long-lived assets. The Company’s future assessment of the magnitude and duration of the COVID-19 pandemic, as well as other factors, could impact the Company’s consolidated financial statements in future reporting periods.</span></div>
CY2023Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	534700000	usd
CY2022Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	428100000	usd
CY2023Q4	lh	Concentration Risk Accounts Receivable Medicare And Medicaid ConcentrationRiskAccountsReceivableMedicareAndMedicaid	86500000	usd
CY2022Q4	lh	Concentration Risk Accounts Receivable Medicare And Medicaid ConcentrationRiskAccountsReceivableMedicareAndMedicaid	85800000	usd
CY2023Q4	lh	Accountsreceivablefrom Ontariogovernmentsponsoredhealthcareplan AccountsreceivablefromOntariogovernmentsponsoredhealthcareplan	5500000	usd
CY2023Q4	lh	Percentofgrossaccountsreceivableduefrompatients Percentofgrossaccountsreceivableduefrompatients	0.204
CY2022Q4	lh	Percentofgrossaccountsreceivableduefrompatients Percentofgrossaccountsreceivableduefrompatients	0.153
CY2023	us-gaap	Net Income Loss NetIncomeLoss	418000000.0	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	87100000	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.80
CY2022	us-gaap	Net Income Loss NetIncomeLoss	1279100000	usd
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	91100000	shares
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.05
CY2021	us-gaap	Net Income Loss NetIncomeLoss	2377300000	usd
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	96700000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	24.60
CY2023	lh	Incremental Common Shares Attributable To Stock Options IncrementalCommonSharesAttributableToStockOptions	500000	shares
CY2022	lh	Incremental Common Shares Attributable To Stock Options IncrementalCommonSharesAttributableToStockOptions	500000	shares
CY2021	lh	Incremental Common Shares Attributable To Stock Options IncrementalCommonSharesAttributableToStockOptions	800000	shares
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	418000000.0	usd
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	87600000	shares
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.77
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1279100000	usd
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	91600000	shares
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	13.97
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	2377300000	usd
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	97500000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	24.39
CY2023	us-gaap	Earnings Per Share Potentially Dilutive Securities EarningsPerSharePotentiallyDilutiveSecurities	0.2
CY2022	us-gaap	Earnings Per Share Potentially Dilutive Securities EarningsPerSharePotentiallyDilutiveSecurities	0.2
CY2021	us-gaap	Earnings Per Share Potentially Dilutive Securities EarningsPerSharePotentiallyDilutiveSecurities	0.1
CY2023Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	385100000	usd
CY2022Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	412800000	usd
CY2023Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	89500000	usd
CY2022Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	57800000	usd
CY2023Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	66100000	usd
CY2022Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	23300000	usd
CY2023	lh	Propertyplantandequipmentusefullifesoftwareminimum Propertyplantandequipmentusefullifesoftwareminimum	3	y
CY2023	lh	Propertyplantandequipmentusefullifesoftwaremaximum Propertyplantandequipmentusefullifesoftwaremaximum	15	y
CY2023	lh	Property Plant And Equipment Useful Life Software Average PropertyPlantAndEquipmentUsefulLifeSoftwareAverage	5	y
CY2021	lh	Disposal Group Including Discontinued Operations Other Nonoperating Income Expense DisposalGroupIncludingDiscontinuedOperationsOtherNonoperatingIncomeExpense	27000000.0	usd
CY2023Q4	lh	Income Tax Benefit Minimum Certainty Percentage IncomeTaxBenefitMinimumCertaintyPercentage	0.50
CY2022	lh	Disposal Group Including Discontinued Operations Other Nonoperating Income Expense DisposalGroupIncludingDiscontinuedOperationsOtherNonoperatingIncomeExpense	6900000	usd
CY2023Q4	lh	Disposal Group Including Discontinued Operation Fortrea Senior Notes DisposalGroupIncludingDiscontinuedOperationFortreaSeniorNotes	570000000.0	usd
CY2023Q4	lh	Disposal Group Including Discontinued Operation Fortrea Senior Notes Interest Rate DisposalGroupIncludingDiscontinuedOperationFortreaSeniorNotesInterestRate	0.07500
CY2023Q4	lh	Disposal Group Including Discontinued Operation Fortrea Distribution DisposalGroupIncludingDiscontinuedOperationFortreaDistribution	1600000000	usd
CY2023Q4	lh	Disposal Group Including Discontinued Operation Fortrea Credit Facilities DisposalGroupIncludingDiscontinuedOperationFortreaCreditFacilities	1520000000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	1506600000	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	3012900000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	2984800000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation Costs Of Goods Sold DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold	1244500000	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Costs Of Goods Sold DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold	2336700000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Costs Of Goods Sold DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold	2352900000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation Gross Profit Loss DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss	262100000	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Gross Profit Loss DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss	676200000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Gross Profit Loss DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss	631900000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation General And Administrative Expense DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense	184100000	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation General And Administrative Expense DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense	233500000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation General And Administrative Expense DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense	261800000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation Depreciation And Amortization DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization	31900000	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Depreciation And Amortization DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization	65700000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Depreciation And Amortization DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization	140100000	usd
CY2023	lh	Disposal Group Including Discontinued Operations Goodwill And Other Asset Impairment DisposalGroupIncludingDiscontinuedOperationsGoodwillAndOtherAssetImpairment	0	usd
CY2022	lh	Disposal Group Including Discontinued Operations Goodwill And Other Asset Impairment DisposalGroupIncludingDiscontinuedOperationsGoodwillAndOtherAssetImpairment	9800000	usd
CY2021	lh	Disposal Group Including Discontinued Operations Goodwill And Other Asset Impairment DisposalGroupIncludingDiscontinuedOperationsGoodwillAndOtherAssetImpairment	0	usd
CY2023	lh	Disposal Group Including Discontinued Operation Restructuring And Other Charges DisposalGroupIncludingDiscontinuedOperationRestructuringAndOtherCharges	3000000.0	usd
CY2022	lh	Disposal Group Including Discontinued Operation Restructuring And Other Charges DisposalGroupIncludingDiscontinuedOperationRestructuringAndOtherCharges	29800000	usd
CY2021	lh	Disposal Group Including Discontinued Operation Restructuring And Other Charges DisposalGroupIncludingDiscontinuedOperationRestructuringAndOtherCharges	19100000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	43100000	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	337400000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	210900000	usd
CY2023	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	500000	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	500000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	300000	usd
CY2023	lh	Disposal Group Including Discontinued Operation Investment Income Expense DisposalGroupIncludingDiscontinuedOperationInvestmentIncomeExpense	1200000	usd
CY2022	us-gaap	Disposal Group Including Discontinued Operation Interest Income DisposalGroupIncludingDiscontinuedOperationInterestIncome	1400000	usd
CY2021	us-gaap	Disposal Group Including Discontinued Operation Interest Income DisposalGroupIncludingDiscontinuedOperationInterestIncome	1400000	usd
CY2023	lh	Disposal Group Including Discontinued Operations Other Nonoperating Income Expense DisposalGroupIncludingDiscontinuedOperationsOtherNonoperatingIncomeExpense	4200000	usd
CY2023	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	45600000	usd
CY2022	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	345200000	usd
CY2021	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	239000000.0	usd
CY2023	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	6800000	usd
CY2022	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	68100000	usd
CY2021	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	57100000	usd
CY2023	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	38800000	usd
CY2022	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	277100000	usd
CY2021	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	181900000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	109400000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Accounts Notes And Loans Receivable Net DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet	436500000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Other Current Assets DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets	583600000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Prepaid And Other Assets Current DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssetsCurrent	96600000	usd
CY2022Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	1226100000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Property Plant And Equipment Noncurrent DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNoncurrent	162100000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Goodwill Noncurrent DisposalGroupIncludingDiscontinuedOperationGoodwillNoncurrent	1997300000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Intangible Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNoncurrent	823300000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Deferred Tax Assets DisposalGroupIncludingDiscontinuedOperationDeferredTaxAssets	1200000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Other Noncurrent Assets DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets	54300000	usd
CY2022Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	4264300000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Accounts Payable Current DisposalGroupIncludingDiscontinuedOperationAccountsPayableCurrent	82600000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Accrued Liabilities Current DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesCurrent	281800000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Deferred Revenue Current DisposalGroupIncludingDiscontinuedOperationDeferredRevenueCurrent	271500000	usd
CY2022Q4	lh	Disposal Group Including Discontinued Operation Short Term Operating Lease Liabilities DisposalGroupIncludingDiscontinuedOperationShortTermOperatingLeaseLiabilities	21700000	usd
CY2022Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	657600000	usd
CY2022Q4	lh	Disposal Group Including Discontinued Operation Operating Lease Liabilities DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiabilities	26800000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Accrued Income Tax Payable Noncurrent DisposalGroupIncludingDiscontinuedOperationAccruedIncomeTaxPayableNoncurrent	192800000	usd
CY2022Q4	us-gaap	Disposal Group Including Discontinued Operation Other Noncurrent Liabilities DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities	21700000	usd
CY2022Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	898900000	usd
CY2023	lh	Percentof Revenue Contributed PercentofRevenueContributed	1
CY2022	lh	Percentof Revenue Contributed PercentofRevenueContributed	1
CY2021	lh	Percentof Revenue Contributed PercentofRevenueContributed	1
CY2023	lh	Percent Of Domestic Revenue PercentOfDomesticRevenue	0.837
CY2022	lh	Percent Of Domestic Revenue PercentOfDomesticRevenue	0.837
CY2021	lh	Percent Of Domestic Revenue PercentOfDomesticRevenue	0.836
CY2023	lh	Sales Commission Amortization Period Minimum SalesCommissionAmortizationPeriodMinimum	P1Y
CY2023	lh	Sales Commission Amortization Period Maximum SalesCommissionAmortizationPeriodMaximum	P5Y
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	32700000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	30800000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1913300000	usd
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1785500000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Gross ContractWithCustomerAssetGross	192900000	usd
CY2022Q4	us-gaap	Contract With Customer Asset Gross ContractWithCustomerAssetGross	222300000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Other Receivables Current AllowanceForDoubtfulOtherReceivablesCurrent	7500000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Other Receivables Current AllowanceForDoubtfulOtherReceivablesCurrent	10600000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	185400000	usd
CY2022Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	211800000	usd
CY2023Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	421700000	usd
CY2022Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	310600000	usd
CY2023	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	78900000	usd
CY2022	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	99700000	usd
CY2021	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	110700000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	9800000	usd
CY2021Q4	lh	Unbilled Services Allowancefor Credit Loss UnbilledServicesAllowanceforCreditLoss	13900000	usd
CY2021Q4	lh	Note Receivable Allowancefor Credit Loss NoteReceivableAllowanceforCreditLoss	700000	usd
CY2021Q4	lh	Allowancefor Credit Loss AllowanceforCreditLoss	24400000	usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	11700000	usd
CY2022	lh	Unbilled Services Credit Loss Expense Reversal UnbilledServicesCreditLossExpenseReversal	0	usd
CY2022	lh	Note Receivable Credit Loss Expense Reversal NoteReceivableCreditLossExpenseReversal	0	usd
CY2022	lh	Credit Loss Expense Reversal CreditLossExpenseReversal	11700000	usd
CY2022	lh	Allowancefor Credit Loss Write Off AllowanceforCreditLossWriteOff	5900000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	30800000	usd
CY2022Q4	lh	Unbilled Services Allowancefor Credit Loss UnbilledServicesAllowanceforCreditLoss	10500000	usd
CY2022Q4	lh	Note Receivable Allowancefor Credit Loss NoteReceivableAllowanceforCreditLoss	700000	usd
CY2022Q4	lh	Allowancefor Credit Loss AllowanceforCreditLoss	42000000.0	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6300000	usd
CY2023	lh	Unbilled Services Credit Loss Expense Reversal UnbilledServicesCreditLossExpenseReversal	0	usd
CY2023	lh	Note Receivable Credit Loss Expense Reversal NoteReceivableCreditLossExpenseReversal	0	usd
CY2023	lh	Credit Loss Expense Reversal CreditLossExpenseReversal	6300000	usd
CY2023	lh	Allowancefor Credit Loss Write Off AllowanceforCreditLossWriteOff	7400000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	32700000	usd
CY2023Q4	lh	Unbilled Services Allowancefor Credit Loss UnbilledServicesAllowanceforCreditLoss	7500000	usd
CY2023Q4	lh	Note Receivable Allowancefor Credit Loss NoteReceivableAllowanceforCreditLoss	700000	usd
CY2023Q4	lh	Allowancefor Credit Loss AllowanceforCreditLoss	40900000	usd
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	671500000	usd
CY2023	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	296900000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Receivables BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables	600000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	1300000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Prepaid Expense And Other Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets	1500000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	13000000.0	usd
CY2023	lh	Goodwill Acquired During Period Net Of Measurement Period Adjustments GoodwillAcquiredDuringPeriodNetOfMeasurementPeriodAdjustments	267500000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles	360300000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Noncurrent Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets	20100000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets	663100000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Accounts Payable BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable	1200000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther	3200000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities	2300000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther	4100000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities	8400000	usd
CY2023Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	671500000	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1164000000	usd
CY2022	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	542300000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Receivables BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables	500000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther	300000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	27100000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Prepaid Expense And Other Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets	1900000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	53500000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets	32700000	usd
CY2022	lh	Goodwill Acquired During Period Net Of Measurement Period Adjustments GoodwillAcquiredDuringPeriodNetOfMeasurementPeriodAdjustments	558100000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles	572700000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Noncurrent Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets	12500000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets	1258700000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Accounts Payable BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable	3700000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther	72800000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Deferred Revenue BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesDeferredRevenue	700000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Capital Lease Obligation BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation	2900000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther	14600000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities	94700000	usd
CY2022Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	1164000000	usd
CY2021	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	198500000	usd
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	298400000	usd
CY2023	lh	Net Restructuring Charges NetRestructuringCharges	49100000	usd
CY2023	us-gaap	Severance Costs1 SeveranceCosts1	33400000	usd
CY2023	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	22300000	usd
CY2023	lh	Employee Severance Benefits Related Restructuring Reserve Accrual Adjustment EmployeeSeveranceBenefitsRelatedRestructuringReserveAccrualAdjustment	1700000	usd
CY2023	lh	Facility Related Restructuring Reserve Accrual Adjustment FacilityRelatedRestructuringReserveAccrualAdjustment	4900000	usd
CY2022	lh	Net Restructuring Charges NetRestructuringCharges	54000000.0	usd
CY2022	us-gaap	Severance Costs1 SeveranceCosts1	24800000	usd
CY2022	us-gaap	Business Exit Costs1 BusinessExitCosts1	31100000	usd
CY2022	lh	Employee Severance Benefits Related Restructuring Reserve Accrual Adjustment EmployeeSeveranceBenefitsRelatedRestructuringReserveAccrualAdjustment	1400000	usd
CY2022	lh	Facility Related Restructuring Reserve Accrual Adjustment FacilityRelatedRestructuringReserveAccrualAdjustment	500000	usd
CY2021	lh	Net Restructuring Charges NetRestructuringCharges	24000000.0	usd
CY2021	us-gaap	Severance Costs1 SeveranceCosts1	12400000	usd
CY2021	us-gaap	Business Exit Costs1 BusinessExitCosts1	12000000.0	usd
CY2021	lh	Employee Severance Benefits Related Restructuring Reserve Accrual Adjustment EmployeeSeveranceBenefitsRelatedRestructuringReserveAccrualAdjustment	300000	usd
CY2021	lh	Facility Related Restructuring Reserve Accrual Adjustment FacilityRelatedRestructuringReserveAccrualAdjustment	200000	usd
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	12600000	usd
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	12300000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	106400000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	159200000	usd
CY2021Q4	us-gaap	Restructuring Reserve RestructuringReserve	5300000	usd
CY2022	us-gaap	Restructuring Charges RestructuringCharges	55900000	usd
CY2022	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	-1900000	usd
CY2022	us-gaap	Payments For Restructuring PaymentsForRestructuring	47800000	usd
CY2022Q4	us-gaap	Restructuring Reserve RestructuringReserve	11500000	usd
CY2023	us-gaap	Restructuring Charges RestructuringCharges	55700000	usd
CY2023	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	-6600000	usd
CY2023	us-gaap	Payments For Restructuring PaymentsForRestructuring	40000000.0	usd
CY2023Q4	us-gaap	Restructuring Reserve RestructuringReserve	20600000	usd
CY2023Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	9500000	usd
CY2023Q4	us-gaap	Restructuring Reserve Noncurrent RestructuringReserveNoncurrent	11100000	usd
CY2023Q4	us-gaap	Restructuring Reserve RestructuringReserve	20600000	usd
CY2023	lh	Numberofyearsrestructuringliabilitiesexpectedtobepaidoutover Numberofyearsrestructuringliabilitiesexpectedtobepaidoutover	P9Y8M12D
CY2023Q4	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P15Y
CY2023Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P15Y
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	202600000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	198100000	usd
CY2023	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	7100000	usd
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	8000000.0	usd
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	4800000	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	5200000	usd
CY2023	us-gaap	Lease Cost LeaseCost	11900000	usd
CY2022	us-gaap	Lease Cost LeaseCost	13200000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	209700000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	200200000	usd
CY2023	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	4800000	usd
CY2022	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	5200000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	2300000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	737100000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	738100000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	165800000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	163800000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	648900000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	652900000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	814700000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	816700000	usd
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	69500000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	74900000	usd
CY2023Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	6400000	usd
CY2022Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	6000000.0	usd
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	78600000	usd
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	83600000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	85000000.0	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	89600000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y4M24D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P14Y8M12D
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P15Y7M6D
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.041
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.036
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.053
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.055
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	200100000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	11300000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	161200000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	9200000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	114100000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	8600000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	86100000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	8200000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	70700000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	7600000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	330100000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	78300000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	962300000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	123200000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	147600000	usd
CY2023Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	38200000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	165800000	usd
CY2023Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	6400000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	648900000	usd
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	78600000	usd
CY2023	us-gaap	Variable Lease Payment VariableLeasePayment	32700000	usd
CY2022	us-gaap	Variable Lease Payment VariableLeasePayment	27900000	usd
CY2021	us-gaap	Variable Lease Payment VariableLeasePayment	28400000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5816900000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5378500000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	2905100000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	2584400000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2911800000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2794100000	usd
CY2023	lh	Software Depreciation SoftwareDepreciation	76600000	usd
CY2022	lh	Software Depreciation SoftwareDepreciation	75700000	usd
CY2021	lh	Software Depreciation SoftwareDepreciation	73700000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	193600000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	229500000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	235400000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	225700000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	216800000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	205500000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	197300000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	1675000000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	6123700000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	5891000000	usd
CY2023	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	296900000	usd
CY2022	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	598500000	usd
CY2023	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	333600000	usd
CY2022	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	260000000.0	usd
CY2023	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	55500000	usd
CY2022	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-105800000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	6142500000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	6123700000	usd
CY2023Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	5058400000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1716400000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3342000000	usd
CY2022Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	4593300000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1469700000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3123600000	usd
CY2023	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	349000000.0	usd
CY2022	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	261700000	usd
CY2023Q4	lh	Goodwill Impairment Cumulative GoodwillImpairmentCumulative	648500000	usd
CY2023	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	313900000	usd
CY2023	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P13Y3M18D
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	219800000	usd
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	431400000	usd
CY2022Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	444600000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	127500000	usd
CY2022Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	105600000	usd
CY2023Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	245100000	usd
CY2022Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	236800000	usd
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	804000000.0	usd
CY2022Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	787000000.0	usd
CY2023Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	107400000	usd
CY2022Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	96900000	usd
CY2023Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	64500000	usd
CY2022Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	50800000	usd
CY2023Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	41400000	usd
CY2022Q4	us-gaap	Workers Compensation Liability Noncurrent WorkersCompensationLiabilityNoncurrent	46400000	usd
CY2023Q4	us-gaap	Foreign Currency Contracts Liability Fair Value Disclosure ForeignCurrencyContractsLiabilityFairValueDisclosure	53700000	usd
CY2022Q4	us-gaap	Foreign Currency Contracts Liability Fair Value Disclosure ForeignCurrencyContractsLiabilityFairValueDisclosure	45700000	usd
CY2023Q4	lh	Other Liabilities Noncurrent Other OtherLiabilitiesNoncurrentOther	142300000	usd
CY2022Q4	lh	Other Liabilities Noncurrent Other OtherLiabilitiesNoncurrentOther	161300000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	409300000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	401100000	usd
CY2023Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	91300000	usd
CY2022Q4	us-gaap	Accelerated Share Repurchases Settlement Payment Or Receipt AcceleratedShareRepurchasesSettlementPaymentOrReceipt	1100000000	usd
CY2021	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	5200000	shares
CY2021	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	282.05
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1668500000	usd
CY2023Q4	us-gaap	Debt Current DebtCurrent	999800000	usd
CY2022Q4	us-gaap	Debt Current DebtCurrent	301300000	usd
CY2023Q4	lh	A2.30 Senior Notes Due2024 Long Term A2.30SeniorNotesDue2024LongTerm	0	usd
CY2022Q4	lh	A2.30 Senior Notes Due2024 Long Term A2.30SeniorNotesDue2024LongTerm	400000000.0	usd
CY2023Q4	lh	A3.25 Senior Notes Due2024 Long Term A3.25SeniorNotesDue2024LongTerm	0	usd
CY2022Q4	lh	A3.25 Senior Notes Due2024 Long Term A3.25SeniorNotesDue2024LongTerm	600000000.0	usd
CY2023Q4	lh	A3.60 Seniornotesdue2025 A3.60Seniornotesdue2025	1000000000	usd
CY2022Q4	lh	A3.60 Seniornotesdue2025 A3.60Seniornotesdue2025	1000000000	usd
CY2023Q4	lh	A155 Senior Notes Due2026 A155SeniorNotesDue2026	500000000.0	usd
CY2022Q4	lh	A155 Senior Notes Due2026 A155SeniorNotesDue2026	500000000.0	usd
CY2023Q4	lh	Seniornotesdue2027 Seniornotesdue2027	600000000.0	usd
CY2022Q4	lh	Seniornotesdue2027 Seniornotesdue2027	600000000.0	usd
CY2023Q4	lh	A2.95seniornotesdue2029 A2.95seniornotesdue2029	650000000.0	usd
CY2022Q4	lh	A2.95seniornotesdue2029 A2.95seniornotesdue2029	650000000.0	usd
CY2022Q4	lh	A270 Senior Notes Due2031 A270SeniorNotesDue2031	420300000	usd
CY2023Q4	lh	A4.70 Seniornotesdue2045 A4.70Seniornotesdue2045	900000000.0	usd
CY2022Q4	lh	A4.70 Seniornotesdue2045 A4.70Seniornotesdue2045	900000000.0	usd
CY2023Q4	lh	Longtermdebtissuancecosts Longtermdebtissuancecosts	26300000	usd
CY2022Q4	lh	Longtermdebtissuancecosts Longtermdebtissuancecosts	33800000	usd
CY2023Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	600000	usd
CY2022Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	2300000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4054700000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5038800000	usd
CY2019Q2	lh	A2019 Term Loan A2019TermLoan	850000000.0	usd
CY2014Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	1000000000	usd
CY2014Q4	lh	Credit Facility Optionto Increase CreditFacilityOptiontoIncrease	500000000.0	usd
CY2014Q4	lh	Credit Facility Maximum Swing Line Borrowings CreditFacilityMaximumSwingLineBorrowings	100000000.0	usd
CY2023	us-gaap	Line Of Credit Facility Commitment Fee Description LineOfCreditFacilityCommitmentFeeDescription	0.10% to 0.225%
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	1001100000	usd
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Two LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo	1000000000	usd
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Three LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree	500000000.0	usd
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Four LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour	600000000.0	usd
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal In Year Five LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive	0	usd
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations Maturities Repayments Of Principal After Year Five LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive	1981000000	usd
CY2023Q4	lh	Longtermdebtfutureminimumpaymentsinterestincludedinpayments Longtermdebtfutureminimumpaymentsinterestincludedinpayments	5082100000	usd
CY2023Q4	lh	Short Term Debt Excluding Debt Issuance Costs ShortTermDebtExcludingDebtIssuanceCosts	1001100000	usd
CY2023Q4	lh	Long Term Debt Excluding Debt Issuance Costs LongTermDebtExcludingDebtIssuanceCosts	4081000000	usd
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	265000000.0	shares
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	30000000.0	shares
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	88200000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	93100000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	97500000	shares
CY2023	lh	Commons Stock Issued During Period Shares Employee Stock Plans CommonsStockIssuedDuringPeriodSharesEmployeeStockPlans	500000	shares
CY2022	lh	Commons Stock Issued During Period Shares Employee Stock Plans CommonsStockIssuedDuringPeriodSharesEmployeeStockPlans	700000	shares
CY2021	lh	Commons Stock Issued During Period Shares Employee Stock Plans CommonsStockIssuedDuringPeriodSharesEmployeeStockPlans	800000	shares
CY2023	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	4800000	shares
CY2022	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	5600000	shares
CY2021	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	5200000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	83900000	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	88200000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	93100000	shares
CY2023Q4	us-gaap	Accelerated Share Repurchases Settlement Payment Or Receipt AcceleratedShareRepurchasesSettlementPaymentOrReceipt	1000000000	usd
CY2023Q4	us-gaap	Accelerated Share Repurchases Settlement Payment Or Receipt AcceleratedShareRepurchasesSettlementPaymentOrReceipt	1000000000	usd
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	3700000	shares
CY2023Q4	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1100000	shares
CY2023	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	206.85
CY2023Q4	us-gaap	Sales And Excise Tax Payable Current And Noncurrent SalesAndExciseTaxPayableCurrentAndNoncurrent	9000000.0	usd
CY2023Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	2500000000	usd
CY2021Q4	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1000000000	usd
CY2021Q4	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	2700000	shares
CY2022	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	233.48
CY2021Q4	us-gaap	Accelerated Share Repurchases Settlement Payment Or Receipt AcceleratedShareRepurchasesSettlementPaymentOrReceipt	1000000000	usd
CY2023Q4	lh	Common Stock Repurchase Authorization Outstanding CommonStockRepurchaseAuthorizationOutstanding	530400000	usd
CY2023	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	254000000.0	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-125900000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	66000000.0	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	-335500000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	52500000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-283000000.0	usd
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationBeforeTax	-900000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-4600000	usd
CY2022	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-5500000	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-9700000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	9700000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-462300000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	30900000	usd
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	183100000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	30100000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	213200000	usd
CY2023	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
CY2023	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-4600000	usd
CY2023	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-4600000	usd
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-1800000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1800000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-47600000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	11700000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-59300000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	504000000.0	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1097900000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	2455000000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	64900000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	139500000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	432600000	usd
CY2023	lh	Income Lossfrom Continuing Operations Before Income Taxesand Noncontrolling Interest IncomeLossfromContinuingOperationsBeforeIncomeTaxesandNoncontrollingInterest	568900000	usd
CY2022	lh	Income Lossfrom Continuing Operations Before Income Taxesand Noncontrolling Interest IncomeLossfromContinuingOperationsBeforeIncomeTaxesandNoncontrollingInterest	1237400000	usd
CY2021	lh	Income Lossfrom Continuing Operations Before Income Taxesand Noncontrolling Interest IncomeLossfromContinuingOperationsBeforeIncomeTaxesandNoncontrollingInterest	2887600000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	183100000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	150800000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	500000000.0	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	38900000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	25400000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	156500000	usd
CY2023	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	44600000	usd
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	34000000.0	usd
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	71900000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	266600000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	210200000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	728400000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-63100000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	15800000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-36700000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-31600000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	600000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-9000000.0	usd
CY2023	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	16600000	usd
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	7300000	usd
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	7300000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-78100000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	23700000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-38400000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	188500000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	233900000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	690000000.0	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.040
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.042
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.039
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.022
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.007
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.007
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.038
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.054
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.001
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0.108
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0.037
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Impairment Losses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLosses	0
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.017
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.012
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.003
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0.026
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Deductions Other EffectiveIncomeTaxRateReconciliationDeductionsOther	0
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.027
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.024
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.001
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.015
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.027
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.004
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.331
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.189
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.239
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	27900000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	19400000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	81700000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	96500000	usd
CY2023Q4	lh	Deferred Tax Asset Right Of Use Asset DeferredTaxAssetRightOfUseAsset	191400000	usd
CY2022Q4	lh	Deferred Tax Asset Right Of Use Asset DeferredTaxAssetRightOfUseAsset	182600000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	9200000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges	7000000.0	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	142900000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	44100000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	246900000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	241900000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	95100000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	95100000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	795100000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	686600000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	150200000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	151300000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	644900000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	535300000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	175300000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	170200000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	614800000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	605100000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	163500000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	166500000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	66200000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	62700000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1019800000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1004500000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	374900000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	469200000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	151300000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	149200000	usd
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	167600000	usd
CY2023	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	8900000	usd
CY2022	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	10200000	usd
CY2021	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	6800000	usd
CY2023	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	7800000	usd
CY2022	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	8100000	usd
CY2021	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	25200000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	150200000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	151300000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	149200000	usd
CY2023Q4	lh	Federal Tax Loss Carryovers FederalTaxLossCarryovers	127000000.0	usd
CY2023	us-gaap	Operating Loss Carryforwards Limitations On Use OperatingLossCarryforwardsLimitationsOnUse	80
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	442800000	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	403000000.0	usd
CY2023Q4	lh	Federaland State Attribute Carryforwards FederalandStateAttributeCarryforwards	114400000	usd
CY2023	lh	Federaland State Attribute Carryforward Valuation Allowance FederalandStateAttributeCarryforwardValuationAllowance	69200000	usd
CY2023Q4	lh	Foreign Tax Loss Carryovers ForeignTaxLossCarryovers	117200000	usd
CY2023	lh	Foreign Tax Loss Carryover Valuation Allowance ForeignTaxLossCarryoverValuationAllowance	7900000	usd
CY2023Q4	lh	Foreign Tax Loss Carryovers Expirein2034 ForeignTaxLossCarryoversExpirein2034	444300000	usd
CY2023Q4	lh	Foreign Tax Loss Carryovers Expire By2043 ForeignTaxLossCarryoversExpireBy2043	14500000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	27400000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	151300000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	150200000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	29900000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	37500000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	200000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	100000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	2300000	usd
CY2023	us-gaap	Income Tax Examination Penalties Expense IncomeTaxExaminationPenaltiesExpense	0.0	usd
CY2022	us-gaap	Income Tax Examination Penalties Expense IncomeTaxExaminationPenaltiesExpense	800000	usd
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$LH
LABCORP HOLDINGS INC. Stock $lh

2024 Q1 Form 10-K Financial Statement

#000092014824000014 Filed on February 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LH LABCORP HOLDINGS INC. Stock $lh

2024 Q1 Form 10-K Financial Statement

#000092014824000014 Filed on February 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LH
LABCORP HOLDINGS INC. Stock $lh