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Other Current Liabilities - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 25, 2021
Jun. 26, 2020
Dec. 25, 2020
Accrued Liabilities, Current [Abstract]      
Customer advances and deferred revenue $ 57.9   $ 41.7
Contract with Customer, Liability, Revenue Recognized $ 24.0 $ 14.2