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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Financial instruments measured at fair value on a recurring basis | The following table presents financial instruments measured at fair value on a recurring basis:
|  | June 30, 2022
(in millions) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets at Fair Value: |  |  |  |  |  |  |  |
Marketable securities: |  |  |  |  |  |  |  |
Corporate debt securities |  | $ | 12.7 |  |  | $ | — |  |  | $ | — |  |  | $ | 12.7 |
Mutual funds |  | 82.2 |  |  | — |  |  | — |  |  | 82.2 |
Equity securities |  | 0.2 |  |  | — |  |  | — |  |  | 0.2 |
Total Marketable Securities |  | 95.1 |  |  | — |  |  | — |  |  | 95.1 |
Total Assets at Fair Value |  | $ | 95.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 95.1 |
Fair value of Debt Instruments | At June 30, 2022, the fair values (in U.S. dollar equivalent) were as follows:
(in millions) | Fair Value |  | Level
€15.0 million fixed rate notes due May 2023 | 16.1 |  |  | Level 2
$750.0 million fixed rate notes due March 2025 | 742.9 |  |  | Level 2
$500.0 million fixed rate notes due June 2028 | 488.1 |  |  | Level 2
$750.0 million fixed rate notes due March 2032 | 658.5 |  |  | Level 2
$750.0 million fixed rate notes due September 2043 | 812.8 |  |  | Level 2
$700.0 million fixed rate notes due June 2048 | 661.4 |  |  | Level 2

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI https://asc.fasb.org/topic&trid=2155941 + Details
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