Current Assets and Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Millions	Sep. 29, 2018	Apr. 01, 2018	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Other taxes payable	$ 60.8		$ 54.3
Unrealized loss on forward foreign currency exchange contracts	39.8		34.5
Restructuring liability	35.2		44.8
Unrealized loss on forward foreign currency exchange contracts	30.8		7.7
Accrued advertising and marketing	30.6		22.6
Return liabilities	25.9		12.1
Accrued capital expenditures	23.1		26.4
Professional services	21.8		14.1
Contract With Customer, Asset And Liability [Line Items]
Contract with customer liability	17.5		23.3
Accrued interest	8.4		8.7
Deferred income	6.0		4.3
Advance royalties	1.1		4.1
Other	45.9		43.8
Accrued expenses and other current liabilities	345.8	$ 291.0	295.6
Gift cards and retail store credits
Contract With Customer, Asset And Liability [Line Items]
Contract with customer liability	10.6		16.0
Loyalty Program
Contract With Customer, Asset And Liability [Line Items]
Contract with customer liability	$ 5.8		$ 2.2