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Net Sales - Contract Receivables, Contract Assets, and Contract Liabilities (Details) - USD ($)
$ in Millions
Sep. 27, 2020
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]    
Contract receivables $ 1.1 $ 1.7
Contract assets 0.2 1.3
Contract liabilities $ (0.2) $ (0.5)