Exit and Disposal Activities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	$ 4.1	$ 11.6	$ 11.8	$ 19.8
Carlisle Interconnect Technologies
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	0.6	2.7	2.5	7.5
Carlisle Fluid Technologies
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	0.3	7.5	0.8	8.5
Carlisle Brake & Friction
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	3.2	1.0	8.5	3.0
Exit and disposal costs, expected to be incurred	7.0		7.0
Corporate
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	0.0	$ 0.4	0.0	$ 0.8
Medical Business | Carlisle Interconnect Technologies | Employee Termination Benefits
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	0.1		1.3
Exit and disposal costs, aggregate expense recognized	15.4		15.4
Exit and disposal costs, expected to be incurred	15.6		15.6
Designated cash					$ 10.1
Restructuring of Global Footprint | Carlisle Fluid Technologies
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs			0.8
Exit and disposal costs, aggregate expense recognized	11.1		11.1
Manufacturing Operations | Carlisle Brake & Friction | Employee Retention and Termination Benefits
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs, expected to be incurred	3.0		3.0
Minimum | Manufacturing Operations | Carlisle Brake & Friction
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs, expected to be incurred	18.5		$ 18.5
Restructuring plan period			18 months
Minimum | Manufacturing Operations | Carlisle Brake & Friction | Non-cash Accelerated Depreciation
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs, expected to be incurred	3.5		$ 3.5
Minimum | Manufacturing Operations | Carlisle Brake & Friction | Relocate and Reinstall Equipment
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs, expected to be incurred	5.0		5.0
Minimum | Manufacturing Operations | Carlisle Brake & Friction | Other Miscellaneous Costs
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs, expected to be incurred	7.0		7.0
Maximum | Manufacturing Operations | Carlisle Brake & Friction
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs, expected to be incurred	21.5		$ 21.5
Restructuring plan period			21 months
Maximum | Manufacturing Operations | Carlisle Brake & Friction | Non-cash Accelerated Depreciation
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs, expected to be incurred	4.5		$ 4.5
Maximum | Manufacturing Operations | Carlisle Brake & Friction | Relocate and Reinstall Equipment
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs, expected to be incurred	6.0		6.0
Maximum | Manufacturing Operations | Carlisle Brake & Friction | Other Miscellaneous Costs
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs, expected to be incurred	$ 8.0		$ 8.0