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Fair Value Measurement - Schedule of Financial Assets and Liability by Fair Value Hierarchy Level (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available for sale investments | $ 63.4 | $ 65.0
Trading securities | 26.7 | 23.4
Deferred compensation plan liabilities | (26.7) | (23.4)
Derivatives: |  |
Forward exchange contracts-Assets | 0.2 |
Forward exchange contracts-(Liabilities) |  | (0.5)
TOTAL | 239.0 | 169.6
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available for sale investments | 0.0 | 0.0
Trading securities | 26.7 | 23.4
Deferred compensation plan liabilities | (26.7) | (23.4)
Derivatives: |  |
Forward exchange contracts-Assets | 0.0 |
Forward exchange contracts-(Liabilities) |  | 0.0
TOTAL | 175.4 | 105.1
Quoted Prices in Active Markets for Similar Assets (Level 2) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available for sale investments | 63.4 | 65.0
Trading securities | 0.0 | 0.0
Deferred compensation plan liabilities | 0.0 | 0.0
Derivatives: |  |
Forward exchange contracts-Assets | 0.2 |
Forward exchange contracts-(Liabilities) |  | (0.5)
TOTAL | 63.6 | 64.5
Unobservable inputs for which little or no market data exists (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available for sale investments | 0.0 | 0.0
Trading securities | 0.0 | 0.0
Deferred compensation plan liabilities | 0.0 | 0.0
Derivatives: |  |
Forward exchange contracts-Assets | 0.0 |
Forward exchange contracts-(Liabilities) |  | 0.0
TOTAL | 0.0 | 0.0
Money market funds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Money market funds | 175.4 | 105.1
Money market funds | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Money market funds | 175.4 | 105.1
Money market funds | Quoted Prices in Active Markets for Similar Assets (Level 2) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Money market funds | 0.0 | 0.0
Money market funds | Unobservable inputs for which little or no market data exists (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Money market funds | $ 0.0 | $ 0.0

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 710 -SubTopic 10 -Name Accounting Standards Codification -Section 30 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483043/710-10-30-1 + Details
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