Segment Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) business	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)
Net Sales, EBIT, Assets continuing operations by reportable segment
Number of reportable segments | business	4
Revenues	$ 1,846.9	$ 1,177.8	$ 3,343.2	$ 2,118.7
Operating Income (Loss)	410.6	133.8	687.9	218.5
Operating segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	1,846.9	1,177.8	3,343.2	2,118.7
Operating Income (Loss)	432.8	171.1	733.7	286.0
Corporate and unallocated
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	0.0	0.0	0.0	0.0
Operating Income (Loss)	(22.2)	(37.3)	(45.8)	(67.5)
Carlisle Construction Materials | Operating segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	1,113.4	722.8	1,994.5	1,279.2
Operating Income (Loss)	358.9	155.0	620.0	265.7
Carlisle Weatherproofing Technologies | Operating segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	448.9	214.5	808.0	377.4
Operating Income (Loss)	59.0	22.4	96.5	33.0
Carlisle Interconnect Technologies | Operating segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	212.6	168.9	397.6	324.7
Operating Income (Loss)	7.9	(12.9)	5.4	(23.6)
Carlisle Fluid Technologies | Operating segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	72.0	71.6	143.1	137.4
Operating Income (Loss)	$ 7.0	$ 6.6	$ 11.8	$ 10.9