Goodwill and Other Intangible Assets - Net Carrying Value of Other Intangibles (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Net book value of other intangible assets by the reportable segment
Other intangible assets	$ 1,425.5	$ 1,504.9
Corporate
Net book value of other intangible assets by the reportable segment
Other intangible assets	0.4	2.2
Carlisle Construction Materials
Net book value of other intangible assets by the reportable segment
Other intangible assets	314.9	343.0
Carlisle Weatherproofing Technologies
Net book value of other intangible assets by the reportable segment
Other intangible assets	$ 1,110.2	$ 1,159.7