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Restructuring Charges (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Jun. 29, 2019
Sep. 29, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Restructuring Reserve [Roll Forward]          
Beginning balance     $ 24.0 $ 21.4 $ 19.7
Additional charges     25.3 21.0 61.0
Payments     (29.4) (18.8) (59.6)
Non-cash adjustments     (0.3) 0.4 0.3
Ending balance     19.6 24.0 21.4
Restructuring charges $ 12.2 $ 18.0 26.3 21.0 61.0
CSCI          
Restructuring Reserve [Roll Forward]          
Restructuring charges     10.1 $ 17.4 17.1
CSCA          
Restructuring Reserve [Roll Forward]          
Restructuring charges         $ 27.4
Unallocated          
Restructuring Reserve [Roll Forward]          
Restructuring charges     $ 12.2