2019 Term Loan

No definition available.

Name:	lh_A2019TermLoan
Namespace Prefix:	lh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Short term debt issuance costs

+ References

No definition available.

+ Details

Name:	lh_Shorttermdebtissuancecosts
Namespace Prefix:	lh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

+ References

+ Details

Name:	us-gaap_NotesPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=lh_ShortTermDebtIssueCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=lh_NotePayableCurrentMember
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DEBT - SCHEDULE OF SHORT-TERM DEBT (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Jun. 03, 2019
Short-term Debt [Line Items]
2019 Term Loan			$ 850.0
Debt, Current	$ 1.5	$ 376.7
2019 Term Loan [Member]
Short-term Debt [Line Items]
2019 Term Loan	0.0	375.0
Short term debt issue costs
Short-term Debt [Line Items]
Short term debt issuance costs	0.0	(0.4)
Note payable, current
Short-term Debt [Line Items]
Notes Payable, Current	$ 1.5	$ 2.1