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Leases Operating Lease Costs (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 28, 2019
Leases [Abstract]    
Operating lease cost $ 8.1 $ 24.3
Variable lease cost 3.6 10.9
Short-term lease cost 0.3 0.9
Sublease income (1.0) (2.9)
Total lease cost $ 11.0 $ 33.2