Exit and Disposal and Other Restructuring Activities - Components of Exit and Disposal Activities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Employee severance and benefit arrangements	$ 1.9	$ 1.9
Relocation costs	0.1	0.2
Accelerated depreciation	0.0	1.2
Facility cleanup costs	(1.0)	0.8
Other restructuring costs	0.4	0.7
Total exit and disposal costs	1.4	4.8
Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.8	3.0
Selling and administrative expenses
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.6	1.6
Other operating expense, net
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.0	0.2
Carlisle Interconnect Technologies
Restructuring Cost and Reserve [Line Items]
Employee severance and benefit arrangements	0.7
Total exit and disposal costs	1.3	1.9
Carlisle Fluid Technologies
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.1	0.0
Carlisle Brake & Friction
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.0	2.8
Carlisle Construction Materials
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	$ 0.0	$ 0.1