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Summary of Significant Accounting Policies (Details) $ in Millions | 2 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 29, 2020 plan | Apr. 30, 2020 USD ($) plan | Apr. 30, 2019 USD ($) | Apr. 30, 2018 USD ($) | Apr. 30, 2020 MXN ($) | Apr. 30, 2020 USD ($) | May 01, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Advertising costs |  | $ 33,900,000 | $ 38,900,000 | $ 40,100,000 |  |  |
Impairment of long-lived assets |  | 0 | 0 | 0 |  |  |
Impairment of goodwill |  | 0 | 0 | 0 |  |  |
Impairment of intangible assets |  | $ 0 | 0 | 0 |  |  |
Number of defined benefit pension plans | plan |  | 2 |  |  |  |  |
Operating lease right-of-use assets |  |  |  |  |  | $ 127,668,000 |
Operating lease liability |  |  |  |  |  | 131,350,000 |
Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Operating lease right-of-use assets |  |  |  |  |  |  | $ 80,400,000
Minimum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible assets, useful life |  | 3 years |  |  |  |  |
Minimum [Member] | Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Operating lease liability |  |  |  |  |  | 95,000,000 |
Maximum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible assets, useful life |  | 6 years |  |  |  |  |
Maximum [Member] | Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Operating lease liability |  |  |  |  |  | 115,000,000 |
Buildings And Improvements [Member] | Minimum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment useful lives |  | 15 years |  |  |  |  |
Buildings And Improvements [Member] | Maximum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment useful lives |  | 30 years |  |  |  |  |
Machinery And Equipment [Member] | Minimum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment useful lives |  | 3 years |  |  |  |  |
Machinery And Equipment [Member] | Maximum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment useful lives |  | 12 years |  |  |  |  |
Promotional Display [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Amortization |  | $ 8,200,000 | $ 6,400,000 | $ 4,500,000 |  |  |
Promotional Display [Member] | Minimum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment useful lives |  | 24 months |  |  |  |  |
Promotional Display [Member] | Maximum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment useful lives |  | 60 months |  |  |  |  |
Subsequent Event |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Number of defined benefit pension plans | plan | 1 |  |  |  |  |  |
Forward Contracts [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  | $ 327.0 |  |
Derivative Liability |  |  |  |  |  | $ 1,100,000 |
Forward Contracts [Member] | Minimum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Derivative, Forward Exchange Rate |  |  |  |  | 22.18 | 22.18 |
Forward Contracts [Member] | Maximum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Derivative, Forward Exchange Rate |  |  |  |  | 23.42 | 23.42 |

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