Debt Instrument, Debt Covenant, Cash Balance, Minimum Balance

No definition available.

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Namespace Prefix:	leg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Debt Instrument, Secured Debt Limit, Percentage Of Total Consolidated Assets

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line Of Credit Facility, Number Of Types Of Borrowing Available

+ References

No definition available.

+ Details

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Namespace Prefix:	leg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility, Termination Notice, Number Of Business Days

+ References

No definition available.

+ Details

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Namespace Prefix:	leg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Lenders In Syndicate

+ References

No definition available.

+ Details

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Namespace Prefix:	leg_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	duration

- Definition

Ratio of Indebtedness to EBITDA

+ References

No definition available.

+ Details

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Namespace Prefix:	leg_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

Name:	us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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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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Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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Period Type:

Long-Term Debt (Narrative) (Details)	1 Months Ended	12 Months Ended
Long-Term Debt (Narrative) (Details)	Nov. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) business_day type_of_borrowing lender	Dec. 31, 2022 USD ($)
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 1,200,000,000	$ 1,200,000,000
Number of lenders in syndicate \| lender		12
Credit facility outstanding		$ 0	282,500,000
Number of types of borrowing that may be elected under the facility \| type_of_borrowing		5
Number of business days' notice to terminate facility \| business_day		3
Letters of credit
Short-term Debt [Line Items]
Maximum borrowing capacity		$ 125,000,000.0
Revolving credit facility
Short-term Debt [Line Items]
Maximum borrowing capacity		1,200,000,000
Line of credit facility, current borrowing capacity			716,600,000
Letters of credit
Short-term Debt [Line Items]
Credit facility outstanding		$ 0
Line of Credit
Short-term Debt [Line Items]
Excess of without planned expenditures			$ 750,000,000.0
Leverage ratio to EBITDA			3.50
Secured debt limit, percentage of total consolidated assets			15.00%
Line of Credit \| Revolving credit facility
Short-term Debt [Line Items]
Maximum borrowing capacity			$ 1,200,000,000
Line of Credit \| Debt Covenant 2
Short-term Debt [Line Items]
Leverage ratio to EBITDA			4.00
Term notes \| Senior Notes, Due 2051
Short-term Debt [Line Items]
Debt instrument amount issued	$ 500,000,000.0
Stated percentage	3.50%
Term notes \| Senior Notes, Due 2022
Short-term Debt [Line Items]
Stated percentage	3.40%
Repayments of debt	$ 300,000,000.0