Segment Information - Depreciation and Amortization Expense for Each Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 52.7	$ 48.3	$ 108.6	$ 95.9
MK Retail
Segment Reporting Information [Line Items]
Depreciation and amortization	31.3	33.1	64.6	65.1
MK Wholesale
Segment Reporting Information [Line Items]
Depreciation and amortization	12.7	14.6	26.5	29.6
MK Licensing
Segment Reporting Information [Line Items]
Depreciation and amortization	0.5	0.6	1.1	1.2
Michael Kors
Segment Reporting Information [Line Items]
Depreciation and amortization	44.5	48.3	92.2	95.9
Jimmy Choo
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 8.2	$ 0.0	$ 16.4	$ 0.0