Nature of Operations	12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	1. Nature of Operations: Lennox International Inc., a Delaware corporation, through its subsidiaries (referred to herein as “we,” “our,” “us,” “Lennox,” “LII,” or the “Company”), is a global leader in energy-efficient climate-control solutions. We design, manufacture and market a broad range of products for the heating, ventilation, air conditioning and refrigeration (“HVACR”) markets. We have leveraged our expertise to become an industry leader known for innovation, quality and reliability. Our products and services are sold through multiple distribution channels under various names. We operate in two reportable business segments: Home Comfort Solutions (formerly Residential) and Building Climate Solutions (formerly Commercial). See Note 3 for financial information regarding our reportable segments.

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 275
-Publisher FASB
-URI https://asc.fasb.org//275/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-SubTopic 10
-Topic 275
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482861/275-10-50-1

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