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Revenue and Segment Information - Reconciliation Of Operating Profit (Loss) From Segments To Consolidated (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 27, 2019
Jun. 28, 2019
Mar. 29, 2019
Dec. 31, 2018
Sep. 28, 2018
Jun. 29, 2018
Mar. 30, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Segment Reporting Information [Line Items]                      
Gross profit for reportable segments                 $ 2,046.2 $ 2,305.5 $ 2,080.2
Gross profit $ 485.7 $ 475.2 $ 499.0 $ 513.7 $ 569.7 $ 596.6 $ 555.0 $ 517.4 1,973.6 2,238.7 2,035.6
Gross profit for reportable segments                      
Segment Reporting Information [Line Items]                      
Gross profit for reportable segments                 2,046.2 2,305.5 2,080.2
Less: unallocated manufacturing costs                      
Segment Reporting Information [Line Items]                      
Less: unallocated manufacturing costs                 $ (72.6) $ (66.8) $ (44.6)