Derivative Financial Instruments - Summary of Impact of Effective Portion of Gains and Losses of Forward Contracts Designated as Hedges (Details) - Forward foreign currency exchange contracts - Designated as Hedging Instrument - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 30, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Pre-Tax Gain (Loss) Recognized in OCI (Effective Portion)	$ (2.4)	$ 10.2	$ (17.7)	$ 12.3
Pre-Tax Gain (Loss) Reclassified from Accumulated OCI into Earnings (Effective Portion)	$ (2.2)	$ (0.2)	$ 1.0	$ 0.0