Goodwill and Other Intangible Assets, net - Net Carrying Value of Other Intangibles (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Net book value of other intangible assets by the reportable segment
Other intangible assets, net	$ 1,044.8	$ 1,065.0
Carlisle Construction Materials
Net book value of other intangible assets by the reportable segment
Other intangible assets, net	316.4	325.1
Carlisle Interconnect Technologies
Net book value of other intangible assets by the reportable segment
Other intangible assets, net	336.2	344.5
Carlisle Fluid Technologies
Net book value of other intangible assets by the reportable segment
Other intangible assets, net	300.9	302.5
Carlisle Brake & Friction
Net book value of other intangible assets by the reportable segment
Other intangible assets, net	$ 91.3	$ 92.9