Segment Information - Key Performance Information of Reportable Segments (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]
Total revenue	$ 1,253.8	$ 1,146.6	$ 2,456.3	$ 2,099.0
Income from operations	189.4	199.1	404.6	348.5
MK Retail
Segment Reporting Information [Line Items]
Total revenue	643.9	645.0	1,283.4	1,264.9
Income from operations	67.9	69.0	160.4	161.2
MK Wholesale
Segment Reporting Information [Line Items]
Total revenue	457.8	463.6	820.6	767.2
Income from operations	130.1	119.6	227.6	163.1
MK Licensing
Segment Reporting Information [Line Items]
Total revenue	35.4	38.0	62.9	66.9
Income from operations	9.8	10.5	18.9	24.2
Michael Kors
Segment Reporting Information [Line Items]
Total revenue	1,137.1	1,146.6	2,166.9	2,099.0
Income from operations	207.8	199.1	406.9	348.5
Jimmy Choo
Segment Reporting Information [Line Items]
Total revenue	116.7	0.0	289.4	0.0
Income from operations	$ (18.4)	$ 0.0	$ (2.3)	$ 0.0