Segment Information - Summary of Net Sales and Earnings Before Interest and Taxes ("EBIT") (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) segment	Jun. 30, 2023 USD ($)
Net Sales, EBIT, Assets continuing operations by reportable segment
Number of reportable segments | segment			2
Revenues	$ 1,450.6	$ 1,307.0	$ 2,547.1	$ 2,199.6
Operating Income (Loss)	377.5	308.6	602.7	429.3
Operating segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	1,450.6	1,307.0	2,547.1	2,199.6
Operating Income (Loss)	406.0	340.2	659.4	486.7
Corporate and unallocated
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	0.0	0.0	0.0	0.0
Operating Income (Loss)	(28.5)	(31.6)	(56.7)	(57.4)
Carlisle Construction Materials | Operating segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	1,088.9	947.5	1,872.5	1,523.5
Operating Income (Loss)	346.8	280.7	558.0	403.1
Carlisle Weatherproofing Technologies | Operating segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Revenues	361.7	359.5	674.6	676.1
Operating Income (Loss)	$ 59.2	$ 59.5	$ 101.4	$ 83.6