XML 96 R84.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Subsequent Event (Details) $ in Millions | 3 Months Ended
--- | ---
Jun. 30, 2018 USD ($)
Discontinued Operations, Held-for-sale [Member] | South America Business [Member] | Subsequent Event [Member] |
Subsequent Event [Line Items] |
Discontinued Operation, Noncash Charge | $ 30

X
- Definition Discontinued Operation, Noncash Charge + References No definition available. + Details
Name: | lii_DiscontinuedOperationNoncashCharge
Namespace Prefix: | lii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsHeldforsaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=lii_SouthAmericaBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |