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Share-Based Compensation - Summary of Compensation Expense Attributable to Share-Based Compensation (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Dec. 30, 2017
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]        
Share-based compensation expense $ 8.5 $ 5.3 $ 29.6 $ 26.7
Tax (deficit) benefits related to share-based compensation expense (1) $ (0.6) $ 1.6 $ 6.2 $ 9.1