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Segment Information - Key Performance Information of Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended								5 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Mar. 31, 2018	Mar. 31, 2018	Apr. 01, 2017	Apr. 02, 2016
Segment Reporting Information [Line Items]
Total revenue	$ 1,179.5	$ 1,440.1	$ 1,146.6	$ 952.4	$ 1,064.8	$ 1,352.8	$ 1,088.2	$ 987.9		$ 4,718.6	$ 4,493.7	$ 4,712.1
Income from operations	$ 87.1	$ 313.5	$ 199.1	$ 149.4	$ (42.6)	$ 341.9	$ 203.7	$ 186.9		749.1	689.9	1,175.1
MK Retail assets
Segment Reporting Information [Line Items]
Net sales										2,711.8	2,572.1	2,394.9
Income from operations										333.8	159.8	501.4
MK Wholesale
Segment Reporting Information [Line Items]
Net sales										1,639.3	1,775.8	2,143.9
Income from operations										373.8	468.1	584.1
MK Licensing
Segment Reporting Information [Line Items]
Licensing revenue										144.9	145.8	173.3
Income from operations										58.2	62.0	89.6
Michael Kors
Segment Reporting Information [Line Items]
Total revenue										4,496.0	4,493.7	4,712.1
Income from operations										765.8	689.9	1,175.1
Jimmy Choo
Segment Reporting Information [Line Items]
Total revenue									$ 222.6	222.6	0.0	0.0
Income from operations										$ (16.7)	$ 0.0	$ 0.0