Restructuring and Other Charges - Schedule of Restructuring Liability (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Mar. 31, 2018		Apr. 01, 2017		Apr. 02, 2016
Restructuring Reserve [Roll Forward]
Additions charged to expense	$ 44.3	$ 2.4	$ 5.9	$ 102.1	[1]	$ 11.3	[1]	$ 0.0	[1]
Loss on retail store subleases				29.0		0.0		$ 0.0
Retail Fleet Optimization Plan
Restructuring Reserve [Roll Forward]
Balance as of April 1, 2017				0.0
Additions charged to expense				52.6
Balance sheet reclassifications				12.2
Payments				(20.0)
Balance as of March 31, 2018	44.8			44.8		0.0
Retail Fleet Optimization Plan | Severance and benefit costs
Restructuring Reserve [Roll Forward]
Balance as of April 1, 2017				0.0
Additions charged to expense				0.7
Balance sheet reclassifications				0.0
Payments				(0.5)
Balance as of March 31, 2018	0.2			0.2		0.0
Retail Fleet Optimization Plan | Lease-related costs
Restructuring Reserve [Roll Forward]
Balance as of April 1, 2017				0.0
Additions charged to expense				51.9
Balance sheet reclassifications				12.2
Payments				(19.5)
Balance as of March 31, 2018	$ 44.6			44.6		$ 0.0
Loss on retail store subleases				$ 29.0

[1] Restructuring and other charges includes store closure costs recorded in connection with the Retail Fleet Optimization Plan, as well as transaction and transition costs recorded in connection with the acquisitions of Jimmy Choo Group Limited (formerly known as Jimmy Choo PLC) and Michael Kors (HK) Limited and Subsidiaries (see Note 3 and Note 9).