Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation (Policies)	Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Inventory, Policy [Policy Text Block]	Inventory The Company uses the last-in, first-out (LIFO) method of valuing U.S. inventories. An actual valuation of inventory under the LIFO method can be made only at the end of each fiscal year based on the inventory levels and costs at that time. Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and costs and are subject to a final year-end LIFO inventory determination. LIFO expense of $2,198 and $4,758 in the three months ended March 31, 2025 and 2024, respectively, and $4,841 and $12,726 in the nine months ended March 31, 2025 and 2024, respectively, is recorded in cost of sales in the condensed statements of consolidated income.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued Accounting Guidance In November 2024, the Financial Accounting Standards Board (FASB) issued its final standard on the Disaggregation of Income Statement Expenses (DISE). This standard, issued as ASU 2024-03, requires disclosures about specific types of expenses included in the expense captions presented on the face of the income statement as well as disclosures about selling expenses. This update is effective for annual periods beginning after December 15, 2026, and interim periods within annual periods beginning after December 15, 2027. The requirements can be applied prospectively with the option for retrospective application. The Company is currently evaluating the impacts of this guidance on its financial statements and related disclosures. In December 2023, the FASB issued its final standard to improve income tax disclosures. This standard, issued as ASU 2023-09, requires public business entities to annually disclose specific categories in the income tax rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. This update is effective for annual periods beginning after December 15, 2024. The Company is currently evaluating the impacts of this guidance on its financial statements and related disclosures, and expects the standard will only impact its income taxes disclosures with no material impact to the consolidated financial statements. In November 2023, the FASB issued its final standard to improve reportable segment disclosures. This standard, issued as ASU 2023-07, requires enhanced disclosures about significant segment expenses, enhances interim disclosure requirements, clarifies circumstances in which an entity can disclose multiple segment measures of profit or loss, provides new segment disclosure requirements for entities with a single reportable segment, and contains other disclosure requirements. This update is effective for all public business entities for fiscal years beginning after December 15, 2023 for annual disclosure requirements, with the interim disclosure requirements being effective for fiscal years beginning after December 15, 2024. The Company is currently evaluating the impacts of this guidance on its financial statements and related disclosures, and expects the standard will only impact its segment disclosures with no material impact to the consolidated financial statements.

Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.