Segment Information (Details.) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	$ 857.3	$ 794.0
EBIT	96.7	110.6
Corporate
Net Sales, EBIT, Assets continuing operations by reportable segment
EBIT	(18.2)	(16.0)
Carlisle Construction Materials
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	446.1	403.7
EBIT	80.7	72.3
Carlisle Interconnect Technologies
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	194.2	196.7
EBIT	22.3	36.6
Carlisle Food Service Products
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	83.3	60.4
EBIT	5.8	7.1
Carlisle Fluid Technologies
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	60.5	61.2
EBIT	4.9	6.9
Carlisle Brake & Friction
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	73.2	72.0
EBIT	$ 1.2	$ 3.7