Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured (Details) - USD ($) $ in Millions	Mar. 27, 2020	Dec. 27, 2019
Common Stock Purchase Obligation [Member]
Other liabilities:
Liabilities measured at fair value	$ 7.0	$ 6.8
Pension Obligation [Member]
Other liabilities:
Liabilities measured at fair value	4.9	4.4
Contingent Earn-out Liability [Member]
Other liabilities:
Liabilities measured at fair value	12.3	9.5
Significant Unobservable Inputs (Level 3) [Member] | Common Stock Purchase Obligation [Member]
Other liabilities:
Liabilities measured at fair value	7.0	6.8
Significant Unobservable Inputs (Level 3) [Member] | Pension Obligation [Member]
Other liabilities:
Liabilities measured at fair value	4.9	4.4
Significant Unobservable Inputs (Level 3) [Member] | Contingent Earn-out Liability [Member]
Other liabilities:
Liabilities measured at fair value	$ 12.3	$ 9.5