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Derivative Financial Instruments - Additional Information (Details) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 29, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 29, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 25, 2018 EUR (€) | Sep. 25, 2018 USD ($) | Mar. 31, 2018 USD ($) | Jul. 25, 2017 GBP (£) | Jul. 25, 2017 USD ($)
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Notional amounts | $ 2,574.2 |  | $ 2,574.2 |  |  |  | $ 161.7 |  |
Unrealized gain (loss) on forward currency exchange | (30.4) | $ 36.7 | (30.4) | $ 36.7 |  |  |  |  |
Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Notional amounts | 573.4 |  | 573.4 |  |  |  | 161.7 |  |
Forward foreign currency exchange contracts | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Notional amounts | 2,000.8 |  | 2,000.8 |  |  |  | 0.0 |  |
Foreign Currency Gain (Loss) | Forward foreign currency exchange contracts | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Net gains (losses) on undesignated derivative contracts | (30.0) | $ 36.6 | (28.9) | $ 35.2 |  |  |  |  |
Gianni Versace S.p.A | Forward foreign currency exchange contracts | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  | € 1,680,000,000.00 | $ 2,001.0 |  |  |
Jimmy Cho PLC | Forward foreign currency exchange contracts | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Notional amounts |  |  |  |  |  |  |  | £ 1,115,000,000.000 | $ 1,469.0
Japan, Yen | Net investment hedges | Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Notional amounts | 44.0 |  | 44.0 |  |  |  |  |  |
Net investment hedging | Net investment hedges | Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Notional amounts | 434.0 |  | 434.0 |  |  |  | $ 0.0 |  |
Reduction in interest expense | 2.5 |  | 3.9 |  |  |  |  |  |
Net investment hedging | Euro | Net investment hedges | Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Notional amounts | $ 390.0 |  | $ 390.0 |  |  |  |  |  |
Derivative fixed interest rate | 1.585% |  | 1.585% |  |  |  |  |  |
Net investment hedging | Japan, Yen | Net investment hedges | Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative fixed interest rate | 0.89% |  | 0.89% |  |  |  |  |  |
Net investment hedging | US Dollars | Net investment hedges | Designated as Hedging Instrument |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |
Derivative fixed interest rate | 1.472% |  | 1.472% |  |  |  |  |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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