XML 57 R47.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Fair Value Measurements (Financial Instruments Measured At Fair Value On A Recurring Basis) (Details) - Fair Value, Recurring [Member] $ in Millions | Jun. 30, 2024 USD ($)
--- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | $ 121.7
Total Assets at Fair Value | 121.7
Corporate Debt Securities [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 9.7
Mutual Funds [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Trading Securities at Fair Value | 111.8
Equity Securities [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 0.2
Fair Value, Inputs, Level 1 [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 121.7
Total Assets at Fair Value | 121.7
Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 9.7
Fair Value, Inputs, Level 1 [Member] | Mutual Funds [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Trading Securities at Fair Value | 111.8
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 0.2
Fair Value, Inputs, Level 2 [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 0.0
Total Assets at Fair Value | 0.0
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 0.0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Trading Securities at Fair Value | 0.0
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 0.0
Fair Value, Inputs, Level 3 [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 0.0
Total Assets at Fair Value | 0.0
Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | 0.0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Trading Securities at Fair Value | 0.0
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Marketable Securities | $ 0.0

X
- Definition Fair value portion of asset recognized for present right to economic benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 3: http://www.xbrl.org/2003/role/disclosureRef -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
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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
Name: | us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_MarketableSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483467/210-10-45-1 + Details
Name: | us-gaap_TradingSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MutualFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |