Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2023 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Gary S. Bedard [Member]
Trading Arrangements, by Individual
Name	Gary S. Bedard
Title	Executive Vice President and President, LII Residential Heating & Cooling
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	May 12, 2023
Gary S. Bedard Trading Arrangement, Gift Of Common Stock [Member] | Gary S. Bedard [Member]
Trading Arrangements, by Individual
Aggregate Available	805
Gary S. Bedard Trading Arrangement, Sale Of Common Stock [Member] | Gary S. Bedard [Member]
Trading Arrangements, by Individual
Aggregate Available	4,040