XML 68 R57.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments and Contingencies Marshalltown Tornado and Recovery (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract] |  |  |  |
Write-off of property, plant and equipment |  |  | $ 4.2 |
Write-off of inventory |  |  | 5.2 |
Site clean-up and remediation |  |  | 28.4 |
Factory inefficiencies |  |  | 4.9 |
Other |  |  | 6.7 |
Total expense |  |  | 49.4 |
Insurance recoveries received |  |  | 45.0 | $ 0.0
Insurance recoveries receivable |  |  | 4.1 |
Loss (gain) from natural disaster, net of Insurance recoveries | $ 0.3 | $ 0.0 | $ 0.3 | $ 0.0

X
- Definition Factory inefficiencies due to natural disaster + References No definition available. + Details
Name: | lii_Factoryinefficiencies
Namespace Prefix: | lii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss(gain) from natural disaster, net of Insurance recoveries + References No definition available. + Details
Name: | lii_LossgainfromnaturaldisasternetofInsurancerecoveries
Namespace Prefix: | lii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Site clean-up and remediation due to natural disaster + References No definition available. + Details
Name: | lii_Sitecleanupandremediation
Namespace Prefix: | lii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total expense due to natural disaster + References No definition available. + Details
Name: | lii_Totalexpenseduetonaturaldisaster
Namespace Prefix: | lii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Write-off of inventory due to natural disaster + References No definition available. + Details
Name: | lii_Writeoffofinventory
Namespace Prefix: | lii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Write-off of property, plant and equipment due to natural disaster + References No definition available. + Details
Name: | lii_Writeoffofpropertyplantandequipment
Namespace Prefix: | lii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in insurance settlements receivable, which are amounts due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. The expectation is that such reimbursement will be received within one year of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInInsuranceSettlementsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_InsuranceRecoveries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of other expense that is infrequent in occurrence or unusual in nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64828382&loc=d3e15138-107781 + Details
Name: | us-gaap_OtherNonrecurringExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration