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Fair Value Measurements - Reconciliation of Level 3 Liabilities (Details) - Contingent consideration
$ in Millions
4 Months Ended
Jun. 16, 2018
USD ($)
A reconciliation of the beginning and ending balances of Level 3 liabilities  
Beginning balance $ 60.0
Change in fair value (0.9)
Payments (0.7)
Ending balance $ 58.4