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Goodwill and Other Intangible Assets, net - Changes in the Carrying Amount of Goodwill (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) business | Dec. 31, 2019 USD ($) business
Changes in the carrying amount of goodwill |  |
Goodwill, Balance at the beginning of the period | $ 1,619.8 | $ 1,345.4
Goodwill acquired during the year | 18.1 | 274.5
Measurement period adjustments | (2.3) | 0.2
Currency translation and other | 6.1 | (0.3)
Goodwill, Balance at the end of the period | $ 1,641.7 | $ 1,619.8
Additional Acquisitions |  |
Changes in the carrying amount of goodwill |  |
Number of businesses acquired | business | 1 | 5
Acquisition price | $ 3.2 | $ 42.4
Carlisle Construction Materials |  |
Changes in the carrying amount of goodwill |  |
Goodwill, Balance at the beginning of the period | 597.1 | 532.8
Goodwill acquired during the year | 12.5 | 64.3
Measurement period adjustments | 0.0 | 0.5
Currency translation and other | 3.4 | (0.5)
Goodwill, Balance at the end of the period | 613.0 | 597.1
Carlisle Interconnect Technologies |  |
Changes in the carrying amount of goodwill |  |
Goodwill, Balance at the beginning of the period | 835.2 | 643.1
Goodwill acquired during the year | 2.8 | 194.1
Measurement period adjustments | (2.3) | (1.9)
Currency translation and other | (0.1) | (0.1)
Goodwill, Balance at the end of the period | 835.6 | 835.2
Carlisle Fluid Technologies |  |
Changes in the carrying amount of goodwill |  |
Goodwill, Balance at the beginning of the period | 187.5 | 169.5
Goodwill acquired during the year | 2.8 | 16.1
Measurement period adjustments | 0.0 | 1.6
Currency translation and other | 2.8 | 0.3
Goodwill, Balance at the end of the period | $ 193.1 | $ 187.5

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