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v3.25.2

Acquisitions and Dispositions of Businesses (Acquisitions) (Narrative) (Details) $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 business | May 31, 2024 business | Jan. 31, 2024 business | Dec. 31, 2024 business | Jul. 15, 2025 USD ($)
Business Combination [Line Items] |  |  |  |  |
Number of businesses acquired |  |  |  | 2 |
Education [Member] | Supplemental Education [Member] |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |
Number of businesses acquired | 1 |  |  |  |
Education [Member] | Kaplan International [Member] |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |
Number of businesses acquired |  | 1 |  |  |
Other Businesses [Member] |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |
Number of businesses acquired |  |  | 1 |  |
Arconic Architectural Products, LLC [Member] | Manufacturing [Member] | Subsequent Event [Member] | Hoover Treated Wood Products [Member] |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |
Net pension liabilities | $ |  |  |  |  | $ 105

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