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Revenue - Significant Changes in Contract Liabilities (Details)
$ in Millions
3 Months Ended
Mar. 29, 2020
USD ($)
Contract With Customer, Asset (Liability) [Roll Forward]  
Beginning balance $ (0.5)
Net (payments received) / amounts billed (0.1)
Net (costs incurred) / revenue recognized 0.2
Ending balance $ (0.4)