Goodwill and Other Intangible Assets, net - Changes in the Carrying Amount of Goodwill (Details) $ in Millions	6 Months Ended
Jun. 30, 2021 USD ($)
Changes in the carrying amount of goodwill
Goodwill, Balance at the beginning of the period	$ 1,641.7
Measurement period adjustments	(0.2)
Currency translation and other	(1.3)
Goodwill, Balance at the end of the period	1,640.2
Carlisle Construction Materials
Changes in the carrying amount of goodwill
Goodwill, Balance at the beginning of the period	613.0
Measurement period adjustments	0.0
Currency translation and other	(0.9)
Goodwill, Balance at the end of the period	612.1
Carlisle Interconnect Technologies
Changes in the carrying amount of goodwill
Goodwill, Balance at the beginning of the period	835.6
Measurement period adjustments	0.0
Currency translation and other	0.1
Goodwill, Balance at the end of the period	835.7
Carlisle Fluid Technologies
Changes in the carrying amount of goodwill
Goodwill, Balance at the beginning of the period	193.1
Measurement period adjustments	(0.2)
Currency translation and other	(0.5)
Goodwill, Balance at the end of the period	$ 192.4

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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