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Goodwill and Other Intangible Assets, net - Changes in the Carrying Amount of Goodwill (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2017
Dec. 31, 2016
Changes in the carrying amount of goodwill      
Goodwill, Balance at the beginning of the period   $ 1,081.2 $ 1,134.4
Goodwill acquired during the year   507.1 86.6
Impairment charges   0.0 (130.0)
Measurement period adjustments   2.8 (0.3)
Currency translation and other   10.7 (9.5)
Goodwill, Balance at the end of the period   1,601.8 1,081.2
Carlisle Construction Materials      
Changes in the carrying amount of goodwill      
Goodwill, Balance at the beginning of the period   117.5 118.7
Goodwill acquired during the year   420.2  
Currency translation and other   6.6 (1.2)
Goodwill, Balance at the end of the period   544.3 117.5
Carlisle Interconnect Technologies      
Changes in the carrying amount of goodwill      
Goodwill, Balance at the beginning of the period   639.1 555.4
Goodwill acquired during the year   0.0 83.7
Measurement period adjustments   0.3 0.0
Currency translation and other   0.9  
Goodwill, Balance at the end of the period   640.3 639.1
Carlisle Fluid Technologies      
Changes in the carrying amount of goodwill      
Goodwill, Balance at the beginning of the period   167.9 173.4
Goodwill acquired during the year   0.0 2.9
Measurement period adjustments   0.0 (0.3)
Currency translation and other   3.1 (8.1)
Goodwill, Balance at the end of the period   171.0 167.9
Carlisle Fluid Technologies | Adjustment      
Changes in the carrying amount of goodwill      
Measurement period adjustments   4.9  
Carlisle Brake & Friction      
Changes in the carrying amount of goodwill      
Goodwill, Balance at the beginning of the period   96.4 226.6
Impairment charges $ (130.0) 0.0 (130.0)
Currency translation and other   0.1 (0.2)
Goodwill, Balance at the end of the period 96.5 96.5 96.4
Carlisle Food Service Products      
Changes in the carrying amount of goodwill      
Goodwill, Balance at the beginning of the period   60.3 60.3
Goodwill acquired during the year   86.9  
Measurement period adjustments   2.5  
Goodwill, Balance at the end of the period   149.7 60.3
Trade names      
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]      
CBF Wellman   $ 275.8 $ 237.5
Wellman Trade Name | Carlisle Brake & Friction      
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]      
Trade name, impairment charge 11.5    
CBF Wellman $ 35.4