Segment Information- Other Financial Information by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Net Sales, EBIT, Assets continuing operations by reportable segment
Depreciation and Amortization	$ 47.8	$ 38.9
Capital Expenditures	29.0	24.0
Operating Segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Depreciation and Amortization	46.9	38.0
Capital Expenditures	29.0	24.0
Corporate and unallocated
Net Sales, EBIT, Assets continuing operations by reportable segment
Depreciation and Amortization	0.9	0.9
Capital Expenditures	0.0	0.0
Carlisle Construction Materials | Operating Segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Depreciation and Amortization	21.6	16.1
Capital Expenditures	18.4	16.9
Carlisle Weatherproofing Technologies | Operating Segments
Net Sales, EBIT, Assets continuing operations by reportable segment
Depreciation and Amortization	25.3	21.9
Capital Expenditures	$ 10.6	$ 7.1