Derivative Financial Instruments - Impact of Effective Portion of Gains and Losses of Forward Contracts Designated as Hedges (Details) - Foreign Exchange Forward - Designated hedges - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Apr. 02, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Pre-Tax Gain (Loss) Recognized in OCI	$ (22.4)	$ 10.2	$ (25.2)
Pre-tax Loss Reclassified from Accumulated OCI into Earnings	$ (4.0)	$ 0.4	$ 10.9