Segment Information (Details.) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	$ 1,071.7	$ 996.9	$ 1,929.0	$ 1,790.9
EBIT	158.8	178.9	255.5	289.5
Corporate
Net Sales, EBIT, Assets continuing operations by reportable segment
EBIT	(11.3)	(14.1)	(29.5)	(30.1)
Carlisle Construction Materials
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	631.2	582.5	1,077.3	986.2
EBIT	129.0	133.1	209.7	205.4
Carlisle Interconnect Technologies
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	201.8	209.4	396.0	406.1
EBIT	20.1	39.6	42.4	76.2
Carlisle Food Service Products
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	87.8	63.5	171.1	123.9
EBIT	12.1	8.2	17.9	15.3
Carlisle Fluid Technologies
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	71.0	68.2	131.5	129.4
EBIT	7.5	7.3	12.4	14.2
Carlisle Brake & Friction
Net Sales, EBIT, Assets continuing operations by reportable segment
Net sales	79.9	73.3	153.1	145.3
EBIT	$ 1.4	$ 4.8	$ 2.6	$ 8.5