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Fair Value Measurement - Fair Value of Assets and Liabilities (Details) - USD ($) $ in Millions | Apr. 30, 2022 | Jan. 29, 2022 | May 01, 2021
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Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | $ 4.4 | $ 4.5 | $ 5.1
Liabilities | 0.0 | 0.0 | 0.0
Level 1 | US Treasury securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 4.4 | 4.5 | 5.1
Level 1 | Foreign currency contracts |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 0.0 | 0.0 | 0.0
Liabilities | 0.0 | 0.0 | 0.0
Level 1 | US government agency securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 0.0 | 0.0 | 0.0
Level 1 | Corporate bonds and notes |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 0.0 | 0.0 | 0.0
Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 8.4 | 8.1 | 9.5
Liabilities | (2.8) | (1.3) | (0.8)
Level 2 | US Treasury securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 0.0 | 0.0 | 0.0
Level 2 | Foreign currency contracts |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 1.2 | 0.3 | 0.2
Liabilities | (2.8) | (1.3) | (0.8)
Level 2 | US government agency securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 2.0 | 2.0 | 3.1
Level 2 | Corporate bonds and notes |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 5.2 | 5.8 | 6.2
Carrying Value |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 12.8 | 12.6 | 14.6
Liabilities | (2.8) | (1.3) | (0.8)
Carrying Value | US Treasury securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 4.4 | 4.5 | 5.1
Carrying Value | Foreign currency contracts |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 1.2 | 0.3 | 0.2
Liabilities | (2.8) | (1.3) | (0.8)
Carrying Value | US government agency securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | 2.0 | 2.0 | 3.1
Carrying Value | Corporate bonds and notes |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets | $ 5.2 | $ 5.8 | $ 6.2

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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