XML 40 R23.htm IDEA: XBRL DOCUMENT
v3.22.4

Supplemental Information | 12 Months Ended
--- | ---
Dec. 31, 2022
Supplemental Information [Abstract] |
Supplemental Information | Expenses included in our Consolidated Statements of Operations Below is information about expenses included in Selling, general and administrative expenses in our Consolidated Statements of Operations (in millions):
| For the Years Ended December 31,
| 2022 |  | 2021 |  | 2020
Research and development | $ | 80.3 |  |  | $ | 76.1 |  |  | $ | 66.8 |
Advertising, promotions and marketing (1) | 32.4 |  |  | 26.9 |  |  | 26.5 |
Cooperative advertising expenditures | 28.1 |  |  | 27.6 |  |  | 22.2 |
(1) Cooperative advertising expenditures were not included in these amounts.

X
- Definition Supplemental Information [Abstract] + References No definition available. + Details
Name: | lii_SupplementalInformationAbstract
Namespace Prefix: | lii_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosures of supplemental information, including descriptions and amounts, related to the balance sheet, income statement, and/or cash flow statement. + References No definition available. + Details
Name: | us-gaap_AdditionalFinancialInformationDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration