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Acquisitions - Additional Information (Details) £ / shares in Units, $ in Millions |  |  | 3 Months Ended | 4 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jul. 25, 2017 GBP (£) £ / shares | Jul. 25, 2017 USD ($) | May 31, 2016 USD ($) | Sep. 30, 2017 USD ($) | Oct. 01, 2016 USD ($) | Oct. 01, 2016 USD ($) | Sep. 30, 2017 USD ($) | Oct. 01, 2016 USD ($) | Apr. 01, 2017 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Goodwill |  |  |  | $ 119.7 |  |  | $ 119.7 |  | $ 119.7
Michael Kors (HK) Limited |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Ownership interest (percentage) |  |  | 100.00% |  |  |  |  |  |
Fair value of consideration provided |  |  | $ 500.0 |  |  |  |  |  |
Goodwill |  |  | $ 96.5 |  |  |  |  |  |
Revenue of acquiree since acquisition date |  |  |  | 66.9 | $ 51.4 | $ 72.0 | 136.7 |  |
Net income (loss) of acquiree since acquisition date |  |  |  | $ 0.0 | $ (3.8) | $ (6.0) | 2.4 |  |
Transaction costs |  |  |  |  |  |  |  | $ 11.3 |
Michael Kors (HK) Limited | Customer relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible asset, weighted average useful life (in years) |  |  | 10 years |  |  |  |  |  |
MK Panama |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total transaction value in a business acquisition |  |  |  |  |  |  | $ 0.5 |  |
Percentage of ownership interest after acquisition |  |  |  | 75.00% |  |  | 75.00% |  |
Forward foreign currency exchange contracts |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Derivative notional amount |  |  |  | $ 1,645.2 |  |  | $ 1,645.2 |  | 167.5
Not Designated as Hedging Instrument | Forward foreign currency exchange contracts |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Derivative notional amount | £ 1,115,000,000.000 |  |  | 1,468.6 |  |  | 1,468.6 |  | $ 0.0
Forward foreign currency exchange contracts - assets |  |  |  | $ 36.7 |  |  | $ 36.7 |  |
Michael Kors Bidco | Subsidiaries | Jimmy Cho PLC |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total purchase price of equity | £ | £ 896,000,000 |  |  |  |  |  |  |  |
Purchase price per share (in gbp per share) | £ / shares | £ 2.30 |  |  |  |  |  |  |  |
Total transaction value in a business acquisition |  | $ 1,400.0 |  |  |  |  |  |  |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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