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Business Combinations, Goodwill and Acquired Intangible Assets (Details) - USD ($)
$ in Millions
6 Months Ended
Feb. 05, 2019
Jun. 30, 2019
Dec. 30, 2018
Business Acquisition [Line Items]      
Payments to acquire businesses, net of cash acquired   $ 222.5  
Goodwill   1,888.0 $ 1,735.2
Acquired intangibles, net   379.9 $ 344.3
Roper Technologies, Inc      
Business Acquisition [Line Items]      
Payments to acquire businesses, net of cash acquired $ 225.0    
Goodwill acquired during period   145.5  
Intangible assets acquired during period   $ 52.4