Segment Information - Net Sales and Long-lived Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Information
Long-lived assets	$ 778.3	$ 793.2
Revenues	4,245.2	4,811.6	$ 4,479.5
United States
Segment Information
Long-lived assets	551.0	571.8
Revenues	3,430.3	3,847.1	3,461.3
International
Segment Information
Revenues	814.9	964.5	1,018.2
Europe
Segment Information
Long-lived assets	127.3	117.1
Revenues	395.0	428.3	443.5
Asia
Segment Information
Long-lived assets	41.9	44.7
Revenues	228.8	288.3	306.5
Canada
Segment Information
Revenues	89.6	104.7	112.1
Mexico
Segment Information
Long-lived assets	29.9	31.3
Revenues	51.3	70.0	72.0
United Kingdom
Segment Information
Long-lived assets	28.0	28.1
Middle East and Africa
Segment Information
Revenues	29.3	39.4	46.8
Other
Segment Information
Long-lived assets	0.2	0.2
Revenues	20.9	33.8	37.3
Carlisle Construction Materials
Segment Information
Revenues	2,995.6	3,233.3	2,880.3
Carlisle Construction Materials | United States
Segment Information
Revenues	2,677.5	2,895.5	2,552.6
Carlisle Construction Materials | International
Segment Information
Revenues	318.1	337.8	327.7
Carlisle Construction Materials | Europe
Segment Information
Revenues	201.4	204.2	186.2
Carlisle Construction Materials | Asia
Segment Information
Revenues	17.8	19.7	16.4
Carlisle Construction Materials | Canada
Segment Information
Revenues	77.7	89.7	97.9
Carlisle Construction Materials | Mexico
Segment Information
Revenues	4.3	3.0	4.1
Carlisle Construction Materials | Middle East and Africa
Segment Information
Revenues	11.7	13.1	15.2
Carlisle Construction Materials | Other
Segment Information
Revenues	5.2	8.1	7.9
Carlisle Interconnect Technologies
Segment Information
Revenues	731.6	972.9	933.8
Carlisle Interconnect Technologies | United States
Segment Information
Revenues	540.9	699.5	634.0
Carlisle Interconnect Technologies | International
Segment Information
Revenues	190.7	273.4	299.8
Carlisle Interconnect Technologies | Europe
Segment Information
Revenues	65.3	71.7	89.7
Carlisle Interconnect Technologies | Asia
Segment Information
Revenues	69.9	107.9	114.0
Carlisle Interconnect Technologies | Canada
Segment Information
Revenues	3.4	5.5	4.8
Carlisle Interconnect Technologies | Mexico
Segment Information
Revenues	33.7	53.0	48.2
Carlisle Interconnect Technologies | Middle East and Africa
Segment Information
Revenues	15.0	23.0	27.7
Carlisle Interconnect Technologies | Other
Segment Information
Revenues	3.4	12.3	15.4
Carlisle Fluid Technologies
Segment Information
Revenues	242.7	278.4	291.6
Carlisle Fluid Technologies | United States
Segment Information
Revenues	109.4	124.1	116.9
Carlisle Fluid Technologies | International
Segment Information
Revenues	133.3	154.3	174.7
Carlisle Fluid Technologies | Europe
Segment Information
Revenues	46.3	54.8	58.6
Carlisle Fluid Technologies | Asia
Segment Information
Revenues	74.9	87.9	100.1
Carlisle Fluid Technologies | Canada
Segment Information
Revenues	5.2	6.2	6.5
Carlisle Fluid Technologies | Mexico
Segment Information
Revenues	4.6	2.7	5.4
Carlisle Fluid Technologies | Middle East and Africa
Segment Information
Revenues	1.6	1.9	2.5
Carlisle Fluid Technologies | Other
Segment Information
Revenues	0.7	0.8	1.6
Carlisle Brake & Friction
Segment Information
Revenues	275.3	327.0	373.8
Carlisle Brake & Friction | United States
Segment Information
Revenues	102.5	128.0	157.8
Carlisle Brake & Friction | International
Segment Information
Revenues	172.8	199.0	216.0
Carlisle Brake & Friction | Europe
Segment Information
Revenues	82.0	97.6	109.0
Carlisle Brake & Friction | Asia
Segment Information
Revenues	66.2	72.8	76.0
Carlisle Brake & Friction | Canada
Segment Information
Revenues	3.3	3.3	2.9
Carlisle Brake & Friction | Mexico
Segment Information
Revenues	8.7	11.3	14.3
Carlisle Brake & Friction | Middle East and Africa
Segment Information
Revenues	1.0	1.4	1.4
Carlisle Brake & Friction | Other
Segment Information
Revenues	$ 11.6	$ 12.6	$ 12.4