Exit and Disposal Activities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2017
Exit and disposal costs accrued
Balance at the beginning of period	$ 9.0
Charges	26.8	$ 15.5	$ 0.5
Cash payments	(19.1)
Other adjustments and non-cash settlements	(3.6)
Balance at the end of period	13.1	9.0
Carlisle Interconnect Technologies
Exit and disposal costs accrued
Balance at the beginning of period	7.6
Charges	9.5	7.6	0.0
Cash payments	(12.2)
Other adjustments and non-cash settlements	0.0
Balance at the end of period	4.9	7.6
Carlisle Fluid Technologies
Exit and disposal costs accrued
Balance at the beginning of period	0.7
Charges	11.4	4.1	0.0
Cash payments	(3.9)
Other adjustments and non-cash settlements	(1.5)
Balance at the end of period	6.7	0.7
Carlisle Brake & Friction
Exit and disposal costs accrued
Balance at the beginning of period	0.0
Charges	5.1	0.0	0.5
Cash payments	(1.5)
Other adjustments and non-cash settlements	(2.1)
Balance at the end of period	1.5	0.0
Cost of goods sold
Exit and disposal costs accrued
Charges	10.9	0.0	0.5
Selling and administrative expenses
Exit and disposal costs accrued
Charges	15.8	15.0	0.0
Research and development expenses
Exit and disposal costs accrued
Charges	0.1	0.0	0.0
Other operating (income) expense, net
Exit and disposal costs accrued
Charges	0.0	0.5	0.0
Corporate
Exit and disposal costs accrued
Balance at the beginning of period	0.7
Charges	0.8	3.8	0.0
Cash payments	(1.5)
Other adjustments and non-cash settlements	0.0
Balance at the end of period	0.0	0.7
Employee severance and benefit arrangements
Exit and disposal costs accrued
Charges	17.8	10.1	0.0
Relocation costs
Exit and disposal costs accrued
Charges	1.5	3.8	0.0
Other restructuring costs
Exit and disposal costs accrued
Charges	3.8	1.2	0.5
Accelerated depreciation
Exit and disposal costs accrued
Charges	3.7	$ 0.4	$ 0.0
Medical Business | One-time termination benefits | Carlisle Interconnect Technologies
Exit and disposal activities
Restricted Cash	4.6			$ 10.1
Medical Business | Employee severance and benefit arrangements | Carlisle Interconnect Technologies
Exit and disposal activities
Cumulative exit and disposal costs recognized	14.1
Exit and disposal costs, expected to be incurred	15.2
Exit and disposal costs accrued
Charges	6.1
Restructuring of Global Footprint [Member] | Carlisle Fluid Technologies
Exit and disposal activities
Exit and disposal costs, expected to be incurred	10.5
Exit and disposal costs accrued
Charges	10.4
Administrative Functions and Facilities [Member] | Relocation costs | Carlisle Fluid Technologies
Exit and disposal activities
Cumulative exit and disposal costs recognized	5.1
Exit and disposal costs accrued
Charges	1.0
Manufacturing Operations | Relocation costs | Carlisle Interconnect Technologies
Exit and disposal costs accrued
Charges	2.0
Manufacturing Operations | Employee Retention and Termination Benefits [Member] | Carlisle Brake & Friction
Exit and disposal activities
Exit and disposal costs, expected to be incurred	2.5
Exit and disposal costs accrued
Charges	5.1
Minimum | Manufacturing Operations | Carlisle Brake & Friction
Exit and disposal activities
Exit and disposal costs, expected to be incurred	$ 17.5
Restructuring Plan Period	18 months
Minimum | Manufacturing Operations | Other restructuring costs | Carlisle Brake & Friction
Exit and disposal activities
Exit and disposal costs, expected to be incurred	$ 5.0
Minimum | Manufacturing Operations | Accelerated depreciation | Carlisle Brake & Friction
Exit and disposal activities
Exit and disposal costs, expected to be incurred	5.0
Minimum | Manufacturing Operations | Relocate and Reinstall Equipment [Member] | Carlisle Brake & Friction
Exit and disposal activities
Exit and disposal costs, expected to be incurred	5.0
Maximum | Manufacturing Operations | Carlisle Brake & Friction
Exit and disposal activities
Exit and disposal costs, expected to be incurred	$ 21.0
Restructuring Plan Period	21 months
Maximum | Manufacturing Operations | Other restructuring costs | Carlisle Brake & Friction
Exit and disposal activities
Exit and disposal costs, expected to be incurred	$ 6.0
Maximum | Manufacturing Operations | Accelerated depreciation | Carlisle Brake & Friction
Exit and disposal activities
Exit and disposal costs, expected to be incurred	6.5
Maximum | Manufacturing Operations | Relocate and Reinstall Equipment [Member] | Carlisle Brake & Friction
Exit and disposal activities
Exit and disposal costs, expected to be incurred	$ 6.0