Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Jun. 30, 2018
Accounting Policies [Abstract]
Basis of Consolidation	Basis of Consolidation The consolidated financial statements include the accounts of the Company and all majority-owned subsidiaries. All significant intercompany accounts and transactions are eliminated. Investments in companies in which the Company exercises significant influence, but which it does not control (generally a 20 to 50 percent ownership interest), are accounted for by the equity method of accounting and the Company’s share of their income or loss is included in other income(expense), net in the consolidated statements of income.
Revenue Recognition	Revenue Recognition Revenue, net of related discounts, rebates, returns and allowances of $26.5 million, $23.8 million and $29.8 million for the years ended June 30, 2018, 2017 and 2016, respectively, is recognized when persuasive evidence of arrangement exists, title and risk of loss has transferred to the customer, collectability is reasonably assured and pricing is fixed and determinable. These criteria are generally met upon shipment or delivery of the product based on the applicable shipping terms. Shipping terms may vary for products shipped outside the United States depending on the mode of transportation, the country where the material is shipped and any agreements made with the customers.
Freight and Handling Fees and Costs	Freight and Handling Fees and Costs Freight and handling costs billed separately to customers are included as part of net sales, and freight and handling costs expensed are included as part of cost of sales on the consolidated statements of income.
Research and Development	Research and Development Research and development expenditures, which amounted to $19.3 million, $16.9 million and $16.3 million in fiscal years 2018, 2017 and 2016, respectively, are expensed as incurred and are generally reported in cost of sales in the consolidated statements of income. The research and development expenditures consist principally of salaries and benefits, building costs, utilities and administrative expenses. Substantially all development costs are related to developing new products or designing significant improvements to existing products or processes.
Cash Equivalents	Cash Equivalents Cash equivalents consist of highly liquid instruments with original maturities of three months or less. Cash equivalents are stated at cost, which approximates market.
Accounts Receivable	Accounts Receivable Trade receivables are carried at original invoice amount less an estimate made for doubtful receivables based on a review of outstanding amounts. Trade credit is extended based upon periodic evaluation of each customer’s ability to perform its obligations. The Company determines accounts receivable allowances based on an aging of accounts and a review of specific accounts identified as collection risks. The Company does not require collateral to secure accounts receivable.
Inventories	Inventories Inventories are valued at the lower of cost or market. Cost for inventories is principally determined by the LIFO method. The Company also uses the FIFO and average cost methods.
Property, Plant and Equipment and Depreciation	Property, Plant and Equipment and Depreciation Fixed assets are stated at historical cost less accumulated depreciation. Depreciation for financial reporting purposes is computed by the straight-line method over the estimated useful lives of the assets. Upon disposal, assets and related depreciation are removed from the accounts and the differences between the net amounts and proceeds from disposal are generally included in cost of goods sold in the consolidated statements of income.
Computer Software and Amortization	Computer Software and Amortization Computer software is included in other assets on the consolidated balance sheets, and is amortized for financial reporting purposes on a straight-line basis over the respective estimated useful lives ranging from 3 to 7 years.
Goodwill	Goodwill Goodwill, net of accumulated impairment losses, representing the excess of the cost over the net tangible and identifiable intangible assets of acquired businesses, is stated at cost. Goodwill is not amortized but instead is annually tested for impairment as of June 30, or more frequently if events or circumstances indicate that the carrying amount of goodwill may be impaired. Such events or circumstances include a decline in general economic conditions, adverse changes in the industry and markets, poor financial performance effecting earnings and cash flows and a trend of negative or declining cash flows over multiple periods. Potential impairment is identified by comparing the fair value of a reporting unit to its carrying value, including goodwill. The fair value is estimated using discounted cash flows and the use of market multiples valuation techniques. These valuation techniques require the use of estimates and assumptions related to projected operating results, capital expenditures and working capital levels as well as the cost of capital. If the carrying value of the reporting unit exceeds its fair value, any impairment loss is measured by comparing the carrying value of the reporting unit’s goodwill to its implied fair value. For purposes of performing Step 1 of goodwill impairment testing, the Company uses certain nonrecurring fair value measurements using significant unobservable inputs (Level 3). Fair value of each reporting unit for purposes of the goodwill impairment test is based on a weighting of an income approach and a market approach. Under the income approach, fair value is determined based on a discounted cash flow analysis that uses estimates of cash flows discounted to present value using rates commensurate with the risks associated with those cash flows. Under the market approach, a market-based value is derived by relating multiples for earnings and cash flow measures for a group of comparable public companies to the same measure for each reporting unit to estimate fair value. The assumptions used by the Company to determine fair value of the reporting units are similar to those that would be used by market participants performing valuations.
Intangible assets	Intangible assets The costs of intangible assets, consisting principally of trademarks, trade names, non-compete arrangements, technology and customer relationships are amortized on a straight-line basis over the estimated useful lives ranging from 5 to 30 years.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Long-lived assets, including property, plant and equipment and intangible assets, subject to amortization are reviewed for impairment and written down to fair value whenever events or changes in circumstances indicate that the carrying value may not be recoverable through future undiscounted cash flows. The amount of the impairment loss is the excess of the carrying amount of the impaired assets over the fair value of the assets based upon discounted future cash flows.
Environmental Expenditures	Environmental Expenditures Environmental expenditures that pertain to current operations or to future revenues are expensed or capitalized consistent with the Company’s capitalization policy for property, plant and equipment. Expenditures that result from the remediation of an existing condition caused by past operations and that do not contribute to current or future revenues are expensed. Liabilities are recognized for remedial activities when the remediation is probable and the cost can be reasonably estimated. Most estimated liabilities are not discounted to present value due to the uncertainty as to the timing and duration of expected costs.
Derivative Financial Instruments	Derivative Financial Instruments All derivative financial instruments are recorded on the balance sheet at their fair value and changes in fair value are recorded each period in current earnings or other comprehensive income. The Company enters into derivative financial instruments to hedge certain anticipated transactions, firm commitments or assets and liabilities denominated in foreign currencies. In addition, the Company utilizes interest rate swaps to convert fixed rate debt to floating rate. At least quarterly, the Company determines hedge effectiveness utilizing regression analysis for measuring the probable high correlation of the expected future cash flows of the hedged item and the derivative hedging instrument. The ineffective portion of hedges is immediately recorded in the consolidated statements of income. If the hedging relationship ceases to be highly effective or it becomes probable that an expected transaction will no longer occur, future gains or losses on the derivative instrument are recorded in the consolidated statements of income.
Foreign Currency Translation	Foreign Currency Translation Assets and liabilities of most international operations are translated into U.S. dollars at exchange rates in effect at year-end, and their income statements are translated at the average monthly exchange rates prevailing during the year. The resulting translation gains and losses are recorded each period as a component of accumulated other comprehensive income (loss) until the international entity is sold or liquidated. Gains and losses from transactions denominated in foreign currencies are reported in other income (expense), net in the consolidated statements of income.
Income Taxes	Income Taxes Deferred income taxes are recognized by applying enacted statutory tax rates, applicable to future years, to temporary differences between the tax basis and financial statement carrying values of the Company’s assets and liabilities. Valuation allowances are recorded to reduce deferred tax assets to amounts that are more likely than not to be realized. Significant judgments, estimates and assumptions are required in determining tax return reporting positions and in calculating provisions for income tax, which are based on interpretations of tax regulations and accounting pronouncements. Liabilities are established for uncertain tax positions when it is more likely than not that such positions, if challenged, would not be sustained upon review by taxing authorities. These liabilities are re-evaluated as tax regulations and facts and circumstances change, such as the closing of a tax audit or the expiration of the statute of limitations for a specific exposure.
Earnings per Share	Earnings per Share The Company calculates basic and diluted earnings per share using the two class method. Under the two class method, earnings are allocated to common stock and participating securities (restricted stock units that receive non-forfeitable dividends) according to their participation rights in dividends and undistributed earnings. The earnings available to each class of stock are divided by the weighted average number of shares for the period in each class. Diluted earnings per share assume the issuance of common stock for all potentially dilutive share equivalents outstanding.
Concentration of Credit Risk	Concentration of Credit Risk Financial instruments that are potentially subject to concentrations of credit risk consist primarily of cash and cash equivalents, investments in marketable securities and trade receivables. Investment and cash management policies have been implemented that limit deposit concentrations and limit investments to investment grade securities. The risk with respect to trade receivables is mitigated by monitoring payment terms and periodic credit evaluations we perform on our customers, the short duration of our payment terms and by the diversification of our customer base.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Reclassification	Reclassifications Certain amounts in the consolidated financial statement for prior years have been reclassified to conform to the fiscal year 2018 presentation.
Fair Value Measurement	The fair value hierarchy has three levels based on the inputs used to determine fair value. Level 1 refers to quoted prices in active markets for identical assets or liabilities. Level 2 refers to observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3 refers to unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.
Fair Value of Financial Instruments	The Company’s derivative financial instruments consist of commodity forward contracts, foreign currency forward contracts, interest rate swaps and forward interest rate swaps. These instruments are measured at fair value using the market method valuation technique. The inputs to this technique utilize information related to foreign exchange rates, commodity prices and interest rates published by third party leading financial news and data providers. This is observable data; however, the valuation of these instruments is not based on actual transactions for the same instruments and, as such, they are classified as Level 2. The Company’s use of derivatives and hedging policies are more fully discussed in Note 16. The Company has currently chosen not to elect the fair value option for any items that are not already required to be measured at fair value in accordance with accounting principles generally accepted in the United States of America.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Issued Accounting Pronouncements - Adopted in current period In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-09, Compensation - Stock Compensation (Topic 718) - Improvements to Employee Share-Based Payment Accounting, which outlines new provisions intended to simplify various aspects related to accounting for share-based payments and their presentation in the financial statements. The update revised requirements in the following areas: income tax consequences, forfeitures and classification on the statement of cash flows. The Company adopted this standard in the quarter ended September 30, 2017. The standard did not have a material impact on the consolidated financial statements of the Company. The inclusion of excess tax benefits and deficiencies as a component of income tax expense will increase volatility of the provision for income taxes as the amount of excess tax benefits or deficiencies from share-based compensation awards are dependent on the stock price at the date the awards are exercised or vested. The Company does not expect the impact to be material to the Company’s consolidated results of operations; however, such determination is subject to change based on facts and circumstances at the time when awards vest or settle. The Company accounts for forfeitures of share-based awards when they occur. The Company applied the amendments related to the presentation of excess tax benefits on the consolidated statements of cash flows using a prospective transition method, and as a result, excess tax benefits related to share-based awards are reported as cash flows from operating activities. The Company applied the amendments related to the presentation of statutory tax withholding on the consolidated statements of cash flows using a retrospective transition method as required, and as a result, statutory tax withholding related to share-based awards which had been previously classified as cash flows used for operating activities has been be reclassified as cash flows used for financing activities. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments, which outlines new provisions intended to reduce the existing diversity in practice related to accounting for the cash flow and its presentation in the financial statements. ASU 2016-15 is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. The Company adopted the provisions of ASU 2016-15 in the quarter ended September 30, 2017. The adoption of ASU 2016-15 did not materially impact the Company’s consolidated statement of cash flows. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230) - Restricted Cash, which outlines that a statement of cash flows explains the change during the period in total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. ASU 2016-18 is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. The Company adopted the provisions of ASU 2016-18 in the quarter ended September 30, 2017. The adoption of ASU 2016-18 did not materially impact the Company’s consolidated statement of cash flows. In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment, which outlines updates to simplify the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. ASU 2017-04 is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2019, with early adoption permitted. The Company adopted ASU 2017-04 in the quarter ended September 30, 2017. The adoption of ASU 2017-04 did not have an impact on the Company’s financial statements. In March 2018, the FASB issued ASU 2018-05, Income Taxes (Topic 740) - Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118. The amendment provides guidance on accounting for the impact of the Act and allows entities to complete the accounting under ASC 740 within a one-year measurement period from the Act enactment date. This standard is effective upon issuance. The Company will continue to assess the impact that various provisions will have on its business. Any subsequent adjustment to these amounts will be recorded to current tax expense in the quarter of fiscal year 2019 when the analysis is complete. Recently Issued Accounting Pronouncements - Pending Adoption In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). Topic 606, as further amended by subsequent Accounting Standard Updates, affects all aspects of an entity’s revenue recognition, including determining the measurement of revenue and the timing of when it is recognized for the transfer of goods or services to customers. Currently, the Company is in the process of finalizing the assessment phase of its evaluation. The assessment phase included conducting and evaluating the results of internal surveys of its businesses, holding revenue recognition workshops with commercial and business unit finance leadership and reviewing revenue arrangements across all businesses to initially identify a set of applicable qualitative revenue recognition changes related to the standards update. The Company also is evaluating the expanded disclosure requirements included in the guidance. Additionally, as part of the overall evaluation for implementing the guidance, the Company is identifying and preparing to implement changes to its accounting policies, practices, and internal controls over financial reporting. The Company plans to adopt the guidance in Topic 606 effective July 1, 2018 under the modified retrospective method. In February 2016, the FASB issued ASU 2016-02 Leases (Topic 842). ASU 2016-02 improves transparency and comparability among companies by recognizing lease assets and lease liabilities on the balance sheet and by disclosing key information about leasing arrangements. ASU 2016-02 is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2018, with early adoption permitted. The Company is evaluating the impact of the adoption of ASU 2016-02 on the consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740) - Intra-Entity Transfers of Assets Other Than Inventory, which outlines updates to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. ASU 2016-16 is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. The Company is evaluating the impact of the adoption of ASU 2016-16 on the consolidated financial statements. The Company's effective date for the adoption of ASU 2016-16 is July 1, 2018. In March 2017, the FASB issued ASU 2017-07, Compensation - Retirement Benefits (Topic 715) - Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which outlines updates to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. ASU 2017-07 is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2017, with early adoption permitted. The Company is evaluating the impact of the adoption of ASU 2017-07 on the consolidated financial statements. The Company's effective date for the adoption of ASU 2017-07 is July 1, 2018. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities, which expands and refines hedge accounting for both financial and non-financial risk components, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. ASU 2017-12 is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2018, with early adoption permitted. The Company is evaluating the impact of the adoption of ASU 2017-12 on the consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows a reclassification from accumulated other comprehensive income to retained earnings for standard tax effects resulting from the Act. ASU 2018-02 is effective for public business entities for annual periods, including interim periods within those annual periods, beginning after December 15, 2018, with early adoption permitted. The Company is evaluating the impact of the adoption of ASU 2018-02 on the consolidated financial statements.