Basis of Presentation (Policies)	3 Months Ended
Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Inventory, Policy [Policy Text Block]	Inventory The Company uses the 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 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 the final year-end LIFO inventory determination.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Guidance Accounting for current expected credit losses In June 2016, the FASB issued its final standard on measurement of credit losses on financial instruments. This standard, issued as ASU 2016-13, requires that an entity measure impairment of certain financial instruments, including trade receivables, based on expected losses rather than incurred losses. This update is effective for annual and interim financial statement periods beginning after December 15, 2019, with early adoption permitted for financial statement periods beginning after December 15, 2018. In November 2018, April 2019, May 2019, November 2019, and February 2020, the FASB issued ASU 2018-19, ASU 2019-04, ASU 2019-05, ASU 2019-11 and ASU 2020-02, respectively, which clarify the guidance in ASU 2016-13. The Company adopted the new guidance in the first quarter of fiscal 2021. The adoption of this guidance did not have a material impact on the Company's financial statements or related disclosures.
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	Recently Issued Accounting Guidance In December 2019, the FASB issued its final standard on simplifying the accounting for income taxes. This standard, issued as ASU 2019-12, makes a number of changes meant to add or clarify guidance on accounting for income taxes. This update is effective for annual and interim financial statement periods beginning after December 15, 2020, with early adoption permitted in any interim period for which financial statements have not yet been filed. The Company has not yet determined the impact of this pronouncement on its financial statements and related disclosures.

Basis of Presentation (Policies)

3 Months Ended

Sep. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Inventory

The Company uses the 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 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 the final year-end LIFO inventory determination.

New Accounting Pronouncements, Policy [Policy Text Block]

Recently Adopted Accounting Guidance

Accounting for current expected credit losses

In June 2016, the FASB issued its final standard on measurement of credit losses on financial instruments. This standard, issued as ASU 2016-13, requires that an entity measure impairment of certain financial instruments, including trade receivables, based on expected losses rather than incurred losses. This update is effective for annual and interim financial statement periods beginning after December 15, 2019, with early adoption permitted for financial statement periods beginning after December 15, 2018. In November 2018, April 2019, May 2019, November 2019, and February 2020, the FASB issued ASU 2018-19, ASU 2019-04, ASU 2019-05, ASU 2019-11 and ASU 2020-02, respectively, which clarify the guidance in ASU 2016-13. The Company adopted the new guidance in the first quarter of fiscal 2021. The adoption of this guidance did not have a material impact on the Company's financial statements or related disclosures.

Description of New Accounting Pronouncements Not yet Adopted [Text Block]

Recently Issued Accounting Guidance

In December 2019, the FASB issued its final standard on simplifying the accounting for income taxes. This standard, issued as ASU 2019-12, makes a number of changes meant to add or clarify guidance on accounting for income taxes. This update is effective for annual and interim financial statement periods beginning after December 15, 2020, with early adoption permitted in any interim period for which financial statements have not yet been filed. The Company has not yet determined the impact of this pronouncement on its financial statements and related disclosures.