Exit and Disposal Activities - Components of 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
Restructuring Cost and Reserve [Line Items]
Employee severance and benefit arrangements	$ 0.5	$ 9.9	$ 2.2	$ 15.3
Accelerated depreciation	0.4	0.0	1.5	0.0
Relocation costs	0.3	0.2	0.7	1.1
Other restructuring costs	2.9	1.5	7.4	3.4
Total exit and disposal costs	4.1	11.6	11.8	19.8
Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	4.0	3.1	10.0	6.9
Selling and administrative expenses
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.0	8.5	1.3	12.8
Other operating (income) expense, net
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.0	0.0	0.4	0.0
Research and development expenses
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.1	0.0	0.1	0.1
Carlisle Interconnect Technologies
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.6	2.7	2.5	7.5
Carlisle Fluid Technologies
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	0.3	7.5	0.8	8.5
Carlisle Brake & Friction
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	3.2	1.0	8.5	3.0
Corporate
Restructuring Cost and Reserve [Line Items]
Total exit and disposal costs	$ 0.0	$ 0.4	$ 0.0	$ 0.8