$LH
LABCORP HOLDINGS INC. Stock $lh

$lh Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000092014819000092 Filed on October 31, 2019

Income Statement

Concept	2019 Q4	2019 Q3	2018 Q3
Revenue	$2.953B	$2.929B	$2.831B
YoY Change	5.95%	3.43%	8.01%
Cost Of Revenue	$2.133B	$2.111B	$2.041B
YoY Change	5.84%	3.42%	11.11%
Gross Profit	$820.7M	$817.3M	$789.9M
YoY Change	6.25%	3.47%	0.73%
Gross Profit Margin	27.79%	27.91%	27.9%
Selling, General & Admin	$380.5M	$401.5M	$381.8M
YoY Change	-4.13%	5.16%	0.13%
% of Gross Profit	46.36%	49.13%	48.34%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$155.8M	$144.3M	$133.1M
YoY Change	13.14%	8.41%	0.0%
% of Gross Profit	18.98%	17.66%	16.85%
Operating Expenses	$444.7M	$401.5M	$381.8M
YoY Change	-1.85%	5.16%	0.13%
Operating Profit	$336.4M	$339.9M	$343.4M
YoY Change	9.33%	-1.02%	5.11%
Interest Expense	-$49.70M	$60.50M	$59.40M
YoY Change	-4.05%	1.85%	-0.83%
% of Operating Profit	-14.77%	17.8%	17.3%
Other Income/Expense, Net	-$4.800M	-$52.50M	$156.2M
YoY Change	-88.41%	-133.61%	-360.77%
Pretax Income	$292.9M	$287.4M	$499.6M
YoY Change	36.55%	-42.47%	87.26%
Income Tax	$65.60M	$66.40M	$180.6M
% Of Pretax Income	22.4%	23.1%	36.15%
Net Earnings	$227.1M	-$317.2M	$318.8M
YoY Change	43.83%	-199.5%	85.89%
Net Earnings / Revenue	7.69%	-10.83%	11.26%
Basic Earnings Per Share	$2.34	$2.26	$3.14
Diluted Earnings Per Share	$2.32	$2.25	$3.10
COMMON SHARES
Basic Shares Outstanding	97.10M shares	97.60M shares	101.6M shares
Diluted Shares Outstanding		98.30M shares	102.7M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$338.0M	$361.0M	$893.0M
YoY Change	-20.84%	-59.57%	118.34%
Cash & Equivalents	$337.5M	$361.1M	$892.6M
Short-Term Investments
Other Short-Term Assets	$374.0M	$298.0M	$293.0M
YoY Change	21.04%	1.71%	-34.89%
Inventory	$244.7M	$234.9M	$233.0M
Prepaid Expenses	$373.7M	$297.7M	$292.5M
Receivables	$1.544B	$1.617B	$1.536B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$2.981B	$2.988B	$3.274B
YoY Change	5.14%	-8.75%	12.88%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.637B	$2.463B	$1.734B
YoY Change	51.5%	42.01%	-0.11%
Goodwill	$7.865B	$7.815B	$7.363B
YoY Change	6.86%	6.15%	0.51%
Intangibles	$4.035B	$4.021B	$3.991B
YoY Change	3.16%	0.76%	-9.61%
Long-Term Investments	$85.00M	$86.00M	$58.00M
YoY Change	39.34%	48.28%	-10.77%
Other Assets	$435.4M	$458.9M	$239.4M
YoY Change	57.75%	91.69%	-3.39%
Total Long-Term Assets	$15.07B	$14.86B	$13.39B
YoY Change	12.85%	11.0%	-2.93%
TOTAL ASSETS
Total Short-Term Assets	$2.981B	$2.988B	$3.274B
Total Long-Term Assets	$15.07B	$14.86B	$13.39B
Total Assets	$18.05B	$17.85B	$16.66B
YoY Change	11.5%	7.12%	-0.18%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$632.3M	$607.8M	$497.5M
YoY Change	-0.36%	22.17%	-16.44%
Accrued Expenses	$942.4M	$830.3M	$901.5M
YoY Change	8.32%	-7.9%	47.76%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$1.000M	$9.000M
YoY Change	-100.0%	-88.89%	-10.0%
Long-Term Debt Due	$424.0M	$510.0M	$409.0M
YoY Change	4140.0%	24.69%	5012.5%
Total Short-Term Liabilities	$2.656B	$2.555B	$2.106B
YoY Change	41.35%	21.3%	37.02%
LONG-TERM LIABILITIES
Long-Term Debt	$5.790B	$6.101B	$6.045B
YoY Change	-3.36%	0.94%	-16.05%
Other Long-Term Liabilities	$383.2M	$348.3M	$343.0M
YoY Change	14.73%	1.55%	-14.97%
Total Long-Term Liabilities	$6.173B	$6.450B	$6.388B
YoY Change	-2.4%	0.97%	-15.99%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.656B	$2.555B	$2.106B
Total Long-Term Liabilities	$6.173B	$6.450B	$6.388B
Total Liabilities	$10.46B	$10.60B	$9.393B
YoY Change	13.75%	12.82%	-10.87%
SHAREHOLDERS EQUITY
Retained Earnings	$7.904B	$7.677B	$6.922B
YoY Change	10.44%	10.9%	25.46%
Common Stock	$35.80M	$56.80M	$1.840B
YoY Change	-97.55%	-96.91%	-8.46%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$0.00	$0.00	$1.106B
YoY Change	-100.0%	-100.0%	4.45%
Treasury Stock Shares	0.000 shares
Shareholders Equity	$7.644B	$7.020B	$7.248B
YoY Change
Total Liabilities & Shareholders Equity	$18.05B	$17.85B	$16.66B
YoY Change	11.5%	7.12%	-0.18%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2018 Q3
OPERATING ACTIVITIES
Net Income	$227.1M	-$317.2M	$318.8M
YoY Change	43.83%	-199.5%	85.89%
Depreciation, Depletion And Amortization	$155.8M	$144.3M	$133.1M
YoY Change	13.14%	8.41%	0.0%
Cash From Operating Activities	$569.8M	$455.6M	$251.9M
YoY Change	17.15%	80.87%	-36.5%
INVESTING ACTIVITIES
Capital Expenditures	-$128.2M	-$92.60M	-$97.90M
YoY Change	4.91%	-5.41%	30.01%
Acquisitions
YoY Change
Other Investing Activities	-$23.90M	-$147.1M	$647.8M
YoY Change	-3.24%	-122.71%	-152.32%
Cash From Investing Activities	-$152.1M	-$239.7M	$549.9M
YoY Change	3.54%	-143.59%	-141.87%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-449.4M	-115.0M	-128.9M
YoY Change	-44.03%	-10.78%	-112.65%
NET CHANGE
Cash From Operating Activities	569.8M	455.6M	251.9M
Cash From Investing Activities	-152.1M	-239.7M	549.9M
Cash From Financing Activities	-449.4M	-115.0M	-128.9M
Net Change In Cash	-31.70M	100.9M	672.9M
YoY Change	-93.16%	-85.01%	561.0%
FREE CASH FLOW
Cash From Operating Activities	$569.8M	$455.6M	$251.9M
Capital Expenditures	-$128.2M	-$92.60M	-$97.90M
Free Cash Flow	$698.0M	$548.2M	$349.8M
YoY Change	14.69%	56.72%	-25.89%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0000920148
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-11353
	dei	Entity Registrant Name EntityRegistrantName	LABORATORY CORP OF AMERICA HOLDINGS
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-3757370
	dei	Entity Address Address Line1 EntityAddressAddressLine1	358 South Main Street
	dei	Entity Address City Or Town EntityAddressCityOrTown	Burlington,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	NC
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	27215
	dei	City Area Code CityAreaCode	336
	dei	Local Phone Number LocalPhoneNumber	229-1127
	dei	Security12b Title Security12bTitle	Common Stock, $0.10 par value
	dei	Trading Symbol TradingSymbol	LH
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	361100000	USD
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CY2019Q3	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	297700000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	234900000	USD
CY2018Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	309000000.0	USD
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CY2018Q4	us-gaap	Inventory Net InventoryNet	237300000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	334000000.0	USD
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CY2019Q3	us-gaap	Goodwill Goodwill	7815300000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	7360300000	USD
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CY2018Q4	us-gaap	Common Stock Value CommonStockValue	11700000	USD
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CY2019Q3	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1108100000	USD
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CY2019Q3	lh	Net Restructuring And Other Special Charges NetRestructuringAndOtherSpecialCharges	14200000	USD
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	us-gaap	Profit Loss ProfitLoss	597600000	USD
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CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.26
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	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.08
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	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.04
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	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-8700000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-9100000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-89400000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	3200000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-36700000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-73100000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	900000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	4000000.0	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	2400000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1000000.0	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-90300000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-800000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-39100000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-74100000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	130700000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	318200000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	558500000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	651600000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	300000	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	200000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	900000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-100000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	130400000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	318000000.0	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	557600000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	651700000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	6804100000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	173200000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	52500000	USD
CY2018Q1	lh	Issuanceofcommonstockunderemployeeplans Issuanceofcommonstockunderemployeeplans	28400000	USD
CY2018Q1	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	25000000.0	USD
CY2018Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	25800000	USD
CY2018Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	75000000.0	USD
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	6984000000.0	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	233800000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-125800000	USD
CY2018Q2	lh	Issuanceofcommonstockforacquisitionconsideration Issuanceofcommonstockforacquisitionconsideration	14600000	USD
CY2018Q2	lh	Issuanceofcommonstockunderemployeeplans Issuanceofcommonstockunderemployeeplans	-20100000	USD
CY2018Q2	lh	Conversionofconvertibledebt Conversionofconvertibledebt	26200000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	-75000000.0	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	7037700000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	318800000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-800000	USD
CY2018Q3	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	24400000	USD
CY2018Q3	lh	Issuanceofcommonstockunderemployeeplans Issuanceofcommonstockunderemployeeplans	1100000	USD
CY2018Q3	lh	Conversion Of Zero Coupon Convertible Debt ConversionOfZeroCouponConvertibleDebt	300000	USD
CY2018Q3	lh	Conversion Of Zero Coupon Convertible Debt ConversionOfZeroCouponConvertibleDebt	300000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	18800000	USD
CY2018Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	150000000.0	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	7248100000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	6971400000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	185600000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	23600000	USD
CY2019Q1	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	24700000	USD
CY2019Q1	lh	Issuanceofcommonstockunderemployeeplans Issuanceofcommonstockunderemployeeplans	19400000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	25500000	USD
CY2019Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	100100000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	7111300000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	190400000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27600000	USD
CY2019Q2	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	9200000	USD
CY2019Q2	lh	Issuanceofcommonstockunderemployeeplans Issuanceofcommonstockunderemployeeplans	20700000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	26500000	USD
CY2019Q2	us-gaap	Treasury Stock Retired Cost Method Amount TreasuryStockRetiredCostMethodAmount	0	USD
CY2019Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	199900000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	7144400000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	220700000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-90300000	USD
CY2019Q3	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	25100000	USD
CY2019Q3	lh	Issuanceofcommonstockunderemployeeplans Issuanceofcommonstockunderemployeeplans	300000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	31500000	USD
CY2019Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	100000000.0	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	7231100000	USD
	us-gaap	Profit Loss ProfitLoss	597600000	USD
	us-gaap	Profit Loss ProfitLoss	725700000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	421400000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	414400000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	83500000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	70800000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	3800000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1900000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-11900000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	209400000	USD
	lh	Contingentconsiderationadjustment Contingentconsiderationadjustment	-13900000	USD
	lh	Contingentconsiderationadjustment Contingentconsiderationadjustment	0	USD
	lh	Accreted Interest On Zero Coupon Subordinated Notes AccretedInterestOnZeroCouponSubordinatedNotes	0	USD
	lh	Accreted Interest On Zero Coupon Subordinated Notes AccretedInterestOnZeroCouponSubordinatedNotes	100000	USD
	lh	Depreciation And Amortization Of Leased Assets DepreciationAndAmortizationOfLeasedAssets	144100000	USD
	lh	Depreciation And Amortization Of Leased Assets DepreciationAndAmortizationOfLeasedAssets	0	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-18300000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-300000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	5300000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	23300000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	12100000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	144300000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	8500000	USD
	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	59500000	USD
	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	5500000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	14500000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	8800000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-5800000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	40100000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-28200000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-79900000	USD
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-1000000.0	USD
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-94400000	USD
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-165800000	USD
	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	38800000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	874900000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	819000000.0	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	272000000.0	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	257600000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	5800000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	50100000	USD
	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	9400000	USD
	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
	us-gaap	Increase Decrease In Assets Held For Sale IncreaseDecreaseInAssetsHeldForSale	0	USD
	us-gaap	Increase Decrease In Assets Held For Sale IncreaseDecreaseInAssetsHeldForSale	-654500000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	21300000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	14300000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	852900000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	79100000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1131000000.0	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	353600000	USD
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	850000000.0	USD
	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	250000000.0	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	295000000.0	USD
	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	473000000.0	USD
	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	449200000	USD
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	473000000.0	USD
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	449200000	USD
	lh	Payments On Zero Coupon Subordinated Notes PaymentsOnZeroCouponSubordinatedNotes	5200000	USD
	lh	Payments On Zero Coupon Subordinated Notes PaymentsOnZeroCouponSubordinatedNotes	300000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	800000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	6100000	USD
	lh	Deferred Payments On Acquisitions DeferredPaymentsOnAcquisitions	5000000.0	USD
	lh	Deferred Payments On Acquisitions DeferredPaymentsOnAcquisitions	0	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	10900000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	6800000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	40400000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	46200000	USD
	lh	Net Proceeds From Issuance Of Stock To Employees NetProceedsFromIssuanceOfStockToEmployees	59000000.0	USD
	lh	Net Proceeds From Issuance Of Stock To Employees NetProceedsFromIssuanceOfStockToEmployees	67400000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	400000000.0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	300000000.0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	196700000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-587000000.0	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-6300000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-9600000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-65700000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	576000000.0	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	426800000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	316600000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	361100000	USD
CY2018Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	892600000	USD
	lh	Cost Method Investments Maximum Ownership Percentage CostMethodInvestmentsMaximumOwnershipPercentage	0.200
CY2018	us-gaap	Prior Period Reclassification Adjustment PriorPeriodReclassificationAdjustment	44400000	USD
CY2019Q3	lh	Percentof Revenue Contributed PercentofRevenueContributed	1
CY2018Q3	lh	Percentof Revenue Contributed PercentofRevenueContributed	1
	lh	Percentof Revenue Contributed PercentofRevenueContributed	1
	lh	Percentof Revenue Contributed PercentofRevenueContributed	1
CY2019Q3	us-gaap	Accrued Sales Commission Current And Noncurrent AccruedSalesCommissionCurrentAndNoncurrent	27800000	USD
CY2018Q4	us-gaap	Accrued Sales Commission Current And Noncurrent AccruedSalesCommissionCurrentAndNoncurrent	24200000	USD
CY2019Q3	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	15000000.0	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	12900000	USD
CY2019Q3	us-gaap	Deferred Sales Commission DeferredSalesCommission	42800000	USD
CY2018Q4	us-gaap	Deferred Sales Commission DeferredSalesCommission	37100000	USD
CY2019Q3	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	5800000	USD
CY2018Q3	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	4200000	USD
	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	15300000	USD
	us-gaap	Amortization Of Deferred Sales Commissions AmortizationOfDeferredSalesCommissions	12800000	USD
CY2019Q3	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	2300000	USD
CY2018Q3	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	800000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	6100000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	3300000	USD
CY2019Q3	us-gaap	Contract With Customer Asset Gross ContractWithCustomerAssetGross	479300000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Gross ContractWithCustomerAssetGross	396900000	USD
CY2019Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	400200000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	354100000	USD
	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	232800000	USD
	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	144800000	USD
CY2019Q3	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	4310700000	USD
CY2019Q3	lh	Percentofremainingperformanceobligationsrecognizedasrevenueinnextyear Percentofremainingperformanceobligationsrecognizedasrevenueinnextyear	0.36
CY2019Q3	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	67700000	USD
CY2018Q3	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	20500000	USD
CY2019Q3	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	110000000.0	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-11900000	USD
CY2019Q3	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	110000000.0	USD
CY2019Q2	lh	Totalacquisitionconsiderationcashstocknotesetc. Totalacquisitionconsiderationcashstocknotesetc.	711000000.0	USD
CY2019Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	0	USD
CY2019Q2	lh	Totalacquisitionconsiderationcashstocknotesetc. Totalacquisitionconsiderationcashstocknotesetc.	711000000.0	USD
	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P15Y
CY2018Q3	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	3000000.0	USD
	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	8400000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	209400000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	220700000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	97600000	shares
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.26
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	318800000	USD
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	101600000	shares
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.14
	us-gaap	Net Income Loss NetIncomeLoss	596700000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	98100000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.08
	us-gaap	Net Income Loss NetIncomeLoss	725800000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	101800000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.13
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	700000	shares
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000.0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	700000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1200000	shares
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	220700000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	98300000	shares
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.25
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	318800000	USD
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	102700000	shares
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.10
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	596700000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	98800000	shares
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.04
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	725800000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	103100000	shares
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.04
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	200000	shares
CY2018Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	200000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	100000	shares
	lh	Net Restructuring Charges NetRestructuringCharges	48400000	USD
	us-gaap	Severance Costs1 SeveranceCosts1	26200000	USD
	us-gaap	Business Exit Costs1 BusinessExitCosts1	22000000.0	USD
	lh	Employee Severance Benefits Related Restructuring Reserve Accrual Adjustment EmployeeSeveranceBenefitsRelatedRestructuringReserveAccrualAdjustment	400000	USD
	lh	Unusedfacilityrestructuringreserves Unusedfacilityrestructuringreserves	-200000	USD
	lh	Net Restructuring Charges NetRestructuringCharges	36500000	USD
	us-gaap	Severance Costs1 SeveranceCosts1	30000000.0	USD
	us-gaap	Business Exit Costs1 BusinessExitCosts1	8800000	USD
	lh	Unusedfacilityrestructuringreserves Unusedfacilityrestructuringreserves	1200000	USD
	lh	Employee Severance Benefits Related Restructuring Reserve Accrual Adjustment EmployeeSeveranceBenefitsRelatedRestructuringReserveAccrualAdjustment	1100000	USD
CY2018Q4	us-gaap	Restructuring Reserve RestructuringReserve	43600000	USD
	lh	Asc842 Lease Adoption Implementation Impact ASC842LeaseAdoptionImplementationImpact	32800000	USD
	us-gaap	Restructuring Charges RestructuringCharges	34600000	USD
	us-gaap	Restructuring Reserve Accrual Adjustment1 RestructuringReserveAccrualAdjustment1	-200000	USD
	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	13600000	USD
	lh	Restructuring Reserve Settled With Cash And Other Adjustment RestructuringReserveSettledWithCashAndOtherAdjustment	44400000	USD
CY2019Q3	us-gaap	Restructuring Reserve RestructuringReserve	14800000	USD
CY2019Q3	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	11100000	USD
CY2019Q3	us-gaap	Restructuring Reserve Noncurrent RestructuringReserveNoncurrent	3700000	USD
CY2019Q3	us-gaap	Restructuring Reserve RestructuringReserve	14800000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	7360300000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	540000000.0	USD
	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	12600000	USD
	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-72400000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	7815300000	USD
CY2019Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	5798200000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1776900000	USD
CY2019Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4021300000	USD
CY2018Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	5515900000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1604800000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3911100000	USD
CY2019Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	61700000	USD
CY2018Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	54700000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	179000000.0	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	175500000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	54100000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	237900000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	231100000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	225100000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	221400000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	2580300000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P15Y
CY2019Q3	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P15Y
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	58900000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	169700000	USD
CY2019Q3	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2000000.0	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	6500000	USD
CY2019Q3	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1600000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	4800000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	3600000	USD
	us-gaap	Lease Cost LeaseCost	11300000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	174300000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	4800000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	6700000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	50800000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	200000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	732800000	USD
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	681100000	USD
CY2019Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	202100000	USD
CY2019Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	530700000	USD
CY2019Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	85600000	USD
CY2019Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	8300000	USD
CY2019Q3	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	92800000	USD
CY2019Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	101100000	USD
CY2019Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y4M24D
CY2019Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P16Y6M
CY2019Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.043
CY2019Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.053
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	181800000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	3600000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	146300000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	13800000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	105200000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	12000000.0	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	77700000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	10800000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	57400000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	10700000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	277500000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	107200000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	845900000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	158100000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	113100000	USD
CY2019Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	57000000.0	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	732800000	USD
CY2019Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	101100000	USD
CY2019Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1500000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	7400000	USD
CY2019Q3	us-gaap	Variable Lease Cost VariableLeaseCost	5100000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	14300000	USD
CY2019Q3	lh	Leasesnotyetcommenced Leasesnotyetcommenced	20
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	191100000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	8600000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	145400000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	8000000.0	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	107000000.0	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	6700000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	80900000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	6000000.0	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	61500000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	6500000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	155600000	USD
CY2018Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	23100000	USD
	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	100000000.0	USD
	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	291500000	USD
CY2019Q3	us-gaap	Convertible Subordinated Debt Current ConvertibleSubordinatedDebtCurrent	1400000	USD
CY2018Q4	us-gaap	Convertible Subordinated Debt Current ConvertibleSubordinatedDebtCurrent	8700000	USD
CY2019Q3	lh	Seniornotesdue2018 Seniornotesdue2018	500000000.0	USD
CY2018Q4	lh	Seniornotesdue2018 Seniornotesdue2018	0	USD
CY2019Q3	lh	Shorttermdebtissuancecosts Shorttermdebtissuancecosts	200000	USD
CY2018Q4	lh	Shorttermdebtissuancecosts Shorttermdebtissuancecosts	500000	USD
CY2019Q3	us-gaap	Notes Payable Current NotesPayableCurrent	1400000	USD
CY2018Q4	us-gaap	Notes Payable Current NotesPayableCurrent	1800000	USD
CY2019Q3	us-gaap	Debt Current DebtCurrent	502600000	USD
CY2018Q4	us-gaap	Debt Current DebtCurrent	10000000.0	USD
CY2019Q3	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2018Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2018Q4	us-gaap	Line Of Credit Facility Fair Value Of Amount Outstanding LineOfCreditFacilityFairValueOfAmountOutstanding	0	USD
CY2019Q3	lh	Longtermdebtissuancecosts Longtermdebtissuancecosts	35500000	USD
CY2018Q4	lh	Longtermdebtissuancecosts Longtermdebtissuancecosts	40200000	USD
CY2019Q3	us-gaap	Notes Payable NotesPayable	5700000	USD
CY2018Q4	us-gaap	Notes Payable NotesPayable	7200000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6101300000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5990900000	USD
CY2019Q3	us-gaap	Debt Instrument Basis Spread On Variable Rate1 DebtInstrumentBasisSpreadOnVariableRate1	0.02298
CY2018Q4	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	3100000	USD
CY2019Q3	lh	Number Of Days Used To Establish Average Market Price Of Zero Coupon Subordinated Notes NumberOfDaysUsedToEstablishAverageMarketPriceOfZeroCouponSubordinatedNotes	five
	lh	Principal Amount At Maturity Of Zero Coupon Subordinated Notes Converted PrincipalAmountAtMaturityOfZeroCouponSubordinatedNotesConverted	7700000	USD
	lh	Value Of Cash And Common Stock In Connection With Conversions Of Zero Coupon Subordinated Notes Settled In Current Period ValueOfCashAndCommonStockInConnectionWithConversionsOfZeroCouponSubordinatedNotesSettledInCurrentPeriod	14500000	USD
	lh	Issued Price From Issuance Of Zero Coupon Subordinated Notes IssuedPriceFromIssuanceOfZeroCouponSubordinatedNotes	7300000	USD
	lh	Taxbenefitrealizeduponconversionofzerocouponconvertibledebt Taxbenefitrealizeduponconversionofzerocouponconvertibledebt	1700000	USD
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	250000000.0	USD
CY2014Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	1000000000.0	USD
CY2014Q4	lh	Credit Facility Optionto Increase CreditFacilityOptiontoIncrease	350000000.0	USD
CY2014Q4	lh	Credit Facility Maximum Swing Line Borrowings CreditFacilityMaximumSwingLineBorrowings	100000000.0	USD
CY2019Q3	lh	Amount Outstanding Letters Of Credit AmountOutstandingLettersOfCredit	72400000	USD
CY2019Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	927600000	USD
CY2019Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	265000000.0	shares
CY2019Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2019Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	30000000.0	shares
CY2019Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2019Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	98900000	shares
	lh	Commons Stock Issued During Period Shares Employee Stock Plans CommonsStockIssuedDuringPeriodSharesEmployeeStockPlans	1200000	shares
	lh	Restricted Stock Awards And Performance Shares Surrenderedshareamount RestrictedStockAwardsAndPerformanceSharesSurrenderedshareamount	100000	shares
	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	2600000	shares
	us-gaap	Treasury Stock Shares Retired TreasuryStockSharesRetired	0	shares
CY2019Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	97400000	shares
CY2018Q4	lh	Common Stock Repurchase Authorization Outstanding CommonStockRepurchaseAuthorizationOutstanding	443500000	USD
CY2019Q1	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	800000	shares
CY2019Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	131.71
CY2019Q1	us-gaap	Treasury Stock Carrying Basis TreasuryStockCarryingBasis	100100000	USD
CY2019Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	1250000000.0	USD
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1800000	shares
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	162.80
CY2019Q3	us-gaap	Treasury Stock Carrying Basis TreasuryStockCarryingBasis	299900000	USD
CY2019Q3	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	950000000.0	shares
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-389800000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-73300000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-463100000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	-45400000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	8700000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-36700000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	2400000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	2400000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-435200000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-67000000.0	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-502200000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.50
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	24200000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	18000000.0	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	24200000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	18000000.0	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5200000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	8700000	USD
CY2019Q3	lh	Non Elective Contribution NonElectiveContribution	0.03
CY2019Q3	lh	Discretionary Contribution Percentage Maximum DiscretionaryContributionPercentageMaximum	0.03
CY2019Q3	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	13700000	USD
CY2018Q3	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	17300000	USD
	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	50700000	USD
	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	49100000	USD
CY2019Q3	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.045
CY2019Q3	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation	56800000	USD
CY2019Q3	lh	Fair Value Liabilities Measured On Recurring Basis Noncontrolling Interest Puts FairValueLiabilitiesMeasuredOnRecurringBasisNoncontrollingInterestPuts	15500000	USD
	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	22800000	USD
CY2019Q3	us-gaap	Foreign Currency Contract Asset Fair Value Disclosure ForeignCurrencyContractAssetFairValueDisclosure	20000000.0	USD
CY2019Q3	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	4100000	USD
CY2019Q3	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	4100000	USD
CY2019Q3	us-gaap	Cash Surrender Value Fair Value Disclosure CashSurrenderValueFairValueDisclosure	75900000	USD
CY2019Q3	lh	Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability FairValueLiabilitiesMeasuredOnRecurringBasisDeferredCompensationLiability	72300000	USD
CY2019Q3	lh	Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability FairValueLiabilitiesMeasuredOnRecurringBasisDeferredCompensationLiability	72300000	USD
CY2019Q3	us-gaap	Contingent Consideration Classified As Equity Fair Value Disclosure ContingentConsiderationClassifiedAsEquityFairValueDisclosure	6200000	USD
CY2019Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	22000000.0	USD
CY2018Q4	lh	Fair Value Liabilities Measured On Recurring Basis Noncontrolling Interest Puts FairValueLiabilitiesMeasuredOnRecurringBasisNoncontrollingInterestPuts	15000000.0	USD
CY2018Q4	us-gaap	Foreign Currency Contract Asset Fair Value Disclosure ForeignCurrencyContractAssetFairValueDisclosure	2800000	USD
CY2018Q4	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	3100000	USD
CY2018Q4	us-gaap	Cash Surrender Value Fair Value Disclosure CashSurrenderValueFairValueDisclosure	63500000	USD
CY2018Q4	lh	Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability FairValueLiabilitiesMeasuredOnRecurringBasisDeferredCompensationLiability	64200000	USD
CY2018Q4	lh	Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability FairValueLiabilitiesMeasuredOnRecurringBasisDeferredCompensationLiability	64200000	USD
CY2018Q4	us-gaap	Contingent Consideration Classified As Equity Fair Value Disclosure ContingentConsiderationClassifiedAsEquityFairValueDisclosure	18600000	USD
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	1500000	USD
	lh	Contingentconsiderationadjustment Contingentconsiderationadjustment	-13900000	USD
CY2019Q3	lh	Zero Coupon Notes Fair Value ZeroCouponNotesFairValue	1800000	USD
CY2018Q4	lh	Zero Coupon Notes Fair Value ZeroCouponNotesFairValue	16900000	USD
CY2019Q3	lh	Senior Notes Fair Value SeniorNotesFairValue	5763900000	USD
CY2018Q4	lh	Senior Notes Fair Value SeniorNotesFairValue	5318000000.0	USD
CY2019Q3	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	110000000.0	USD
CY2019Q3	us-gaap	Debt Instrument Basis Spread On Variable Rate1 DebtInstrumentBasisSpreadOnVariableRate1	0.02298
CY2019Q3	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	4100000	USD
CY2018Q4	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	3100000	USD
CY2018Q4	lh	A4.625 Seniornotesdue2020 A4.625Seniornotesdue2020	597000000.0	USD
CY2019Q3	us-gaap	Fair Value Hedges At Fair Value Net FairValueHedgesAtFairValueNet	4100000	USD
CY2018Q4	us-gaap	Fair Value Hedge Liabilities At Fair Value FairValueHedgeLiabilitiesAtFairValue	3100000	USD
CY2019Q3	us-gaap	Change In Unrealized Gain Loss On Hedged Item In Fair Value Hedge1 ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1	18800000	USD
CY2019Q3	lh	Minimum Percentage Market To Calculated Price At Which Contingent Cash Interest Is Due MinimumPercentageMarketToCalculatedPriceAtWhichContingentCashInterestIsDue	1.20
CY2019Q3	us-gaap	Embedded Derivative Fair Value Of Embedded Derivative Net EmbeddedDerivativeFairValueOfEmbeddedDerivativeNet	0	USD
CY2019Q3	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	0	USD
	lh	Interest Paid In Cash InterestPaidInCash	216500000	USD
	lh	Interest Paid In Cash InterestPaidInCash	276300000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	181600000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	235000000.0	USD
	lh	Conversion Of Zero Coupon Convertible Debt ConversionOfZeroCouponConvertibleDebt	1700000	USD
	lh	Conversion Of Zero Coupon Convertible Debt ConversionOfZeroCouponConvertibleDebt	300000	USD
	lh	Decreasein Capital Expenditures Incurredbutnotyet Paid DecreaseinCapitalExpendituresIncurredbutnotyetPaid	15900000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	6900000	USD
CY2019Q3	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	110000000.0	USD
CY2018Q4	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	0	USD
CY2019Q3	lh	Intercompanyrevenueelimination Intercompanyrevenueelimination	6100000	USD
CY2018Q3	lh	Intercompanyrevenueelimination Intercompanyrevenueelimination	2200000	USD
	lh	Intercompanyrevenueelimination Intercompanyrevenueelimination	17100000	USD
	lh	Intercompanyrevenueelimination Intercompanyrevenueelimination	4500000	USD
CY2019Q3	us-gaap	Revenues Revenues	2928500000	USD
CY2018Q3	us-gaap	Revenues Revenues	2831300000	USD
	us-gaap	Revenues Revenues	8601400000	USD
	us-gaap	Revenues Revenues	8545900000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	339900000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	343400000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	993800000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	1018000000.0	USD
CY2019Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-52500000	USD
CY2018Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	156200000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-181800000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	35800000	USD
CY2019Q3	lh	Income Loss From Continuing Operations Before Income Taxes And Minority Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest	287400000	USD
CY2018Q3	lh	Income Loss From Continuing Operations Before Income Taxes And Minority Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest	499600000	USD
	lh	Income Loss From Continuing Operations Before Income Taxes And Minority Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest	812000000.0	USD
	lh	Income Loss From Continuing Operations Before Income Taxes And Minority Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest	1053800000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	66400000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	180600000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	214400000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	328100000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	221000000.0	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	319000000.0	USD
	us-gaap	Profit Loss ProfitLoss	597600000	USD
	us-gaap	Profit Loss ProfitLoss	725700000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	300000	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	200000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	900000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-100000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	220700000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	318800000	USD
	us-gaap	Net Income Loss NetIncomeLoss	596700000	USD
	us-gaap	Net Income Loss NetIncomeLoss	725800000	USD

Files In Submission

Name	View Source	Status
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0000920148-19-000092-index.html	Edgar Link	pending
0000920148-19-000092.txt	Edgar Link	pending
0000920148-19-000092-xbrl.zip	Edgar Link	pending
ex311q32019.htm	Edgar Link	pending
ex312q32019.htm	Edgar Link	pending
ex32q32019.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
lh-20190930.xsd	Edgar Link	pending
lh-20190930_cal.xml	Edgar Link	unprocessable
lh-20190930_def.xml	Edgar Link	unprocessable
lh-20190930_lab.xml	Edgar Link	unprocessable
lh-20190930_pre.xml	Edgar Link	unprocessable
lh201910-qq3projectfile.htm	Edgar Link	pending
lh201910-qq3projectfile_htm.xml	Edgar Link	completed
MetaLinks.json	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$LH
LABCORP HOLDINGS INC. Stock $lh

2019 Q4 Form 10-Q Financial Statement

#000092014819000092 Filed on October 31, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LH LABCORP HOLDINGS INC. Stock $lh

2019 Q4 Form 10-Q Financial Statement

#000092014819000092 Filed on October 31, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LH
LABCORP HOLDINGS INC. Stock $lh