Summary of Significant Accounting Policies	12 Months Ended
Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies 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, net in the consolidated statements of income. In November 2012, the Company dissolved its strategic partnership with Sandvik Materials Technology (“Sandvik”). Prior to the dissolution of the strategic partnership, the Company owned a 40 percent interest in Sandvik Powdermet AB, which the Company accounted for as an equity method investment. In addition, Sandvik owned a 40 percent interest in Carpenter Powder Products AB which has historically been reported as a noncontrolling interest. Prior to November 2012, the financial results of Carpenter Powder Products AB were consolidated into the Company’s operating results and financial position, with the 40 percent interest of the noncontrolling partner recognized in the consolidated statement of income as net income attributable to noncontrolling interest and as equity attributable to the noncontrolling interest within total equity. Revenue Recognition Revenue, net of related discounts, rebates, returns and allowances of $27.4 million, $28.3 million and $26.4 million for the years ended June 30, 2015, 2014 and 2013 respectively, is recognized when title and risk of loss has transferred to the customer, which generally occurs 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 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 expenditures, which amounted to $18.7 million, $18.5 million and $19.4 million in fiscal years 2015, 2014 and 2013, 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. 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 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 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. As of June 30, 2015 and 2014, $154.9 million and $161.2 million of inventory, respectively, was accounted for using a method other than the LIFO method. 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. Depreciation for income tax purposes is computed using accelerated methods. 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 statement of income. Computer Software and Amortization Computer software is included in other assets on the consolidated balance sheet, and is amortized for financial reporting purposes on a straight-line basis over the respective estimated useful lives ranging principally from 3 to 7 years. Amortization expense charged to operations related to capitalized software amounted to $6.1 million, $6.4 million and $6.8 million for the years ended June 30, 2015, 2014 and 2013, respectively. Goodwill Goodwill, 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 (in the fourth quarter), 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. Intangible assets The costs of intangible assets, consisting principally of trademarks, trade names, non-compete arrangements, contracts and customer relationships are amortized on a straight-line basis over the estimated useful lives ranging from 2.5 to 30 years. 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 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. For one former operating facility site, due to the routine nature of the expected costs, the liability for future costs is discounted to present value over 20 years assuming a discount rate of approximately 4 percent. The liabilities, net of present value discount, for this former operating site were $10.8 million and $10.4 million, respectively, as of June 30, 2015 and 2014. 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 are immediately recorded in the consolidated statement 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 statement of income. 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 (loss) income until the international entity is sold or liquidated. Gains and losses from transactions denominated in foreign currencies are reported in other income, net in the consolidated statement of income. Income Taxes Deferred income taxes are recognized by applying enacted statutory tax rates, applicable to future years, to temporary differences between the tax bases 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 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 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. During fiscal years 2015, 2014 and 2013, no customer accounted for 10 percent or more of total net sales. Approximately 17 percent of accounts receivable outstanding at June 30, 2015 are due from one customer. No single customer was greater than 10 percent of accounts receivable as of June 30, 2014. 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.

Summary of Significant Accounting Policies

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, net in the consolidated statements of income. In November 2012, the Company dissolved its strategic partnership with Sandvik Materials Technology (“Sandvik”). Prior to the dissolution of the strategic partnership, the Company owned a 40 percent interest in Sandvik Powdermet AB, which the Company accounted for as an equity method investment. In addition, Sandvik owned a 40 percent interest in Carpenter Powder Products AB which has historically been reported as a noncontrolling interest. Prior to November 2012, the financial results of Carpenter Powder Products AB were consolidated into the Company’s operating results and financial position, with the 40 percent interest of the noncontrolling partner recognized in the consolidated statement of income as net income attributable to noncontrolling interest and as equity attributable to the noncontrolling interest within total equity.

Revenue Recognition

Revenue, net of related discounts, rebates, returns and allowances of $27.4 million, $28.3 million and $26.4 million for the years ended June 30, 2015, 2014 and 2013 respectively, is recognized when title and risk of loss has transferred to the customer, which generally occurs 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 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 expenditures, which amounted to $18.7 million, $18.5 million and $19.4 million in fiscal years 2015, 2014 and 2013, 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.

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

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 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. As of June 30, 2015 and 2014, $154.9 million and $161.2 million of inventory, respectively, was accounted for using a method other than the LIFO method.

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. Depreciation for income tax purposes is computed using accelerated methods. 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 statement of income.

Computer Software and Amortization

Computer software is included in other assets on the consolidated balance sheet, and is amortized for financial reporting purposes on a straight-line basis over the respective estimated useful lives ranging principally from 3 to 7 years. Amortization expense charged to operations related to capitalized software amounted to $6.1 million, $6.4 million and $6.8 million for the years ended June 30, 2015, 2014 and 2013, respectively.

Goodwill

Goodwill, 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 (in the fourth quarter), 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.

Intangible assets

The costs of intangible assets, consisting principally of trademarks, trade names, non-compete arrangements, contracts and customer relationships are amortized on a straight-line basis over the estimated useful lives ranging from 2.5 to 30 years.

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 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. For one former operating facility site, due to the routine nature of the expected costs, the liability for future costs is discounted to present value over 20 years assuming a discount rate of approximately 4 percent. The liabilities, net of present value discount, for this former operating site were $10.8 million and $10.4 million, respectively, as of June 30, 2015 and 2014.

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 are immediately recorded in the consolidated statement 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 statement of income.

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 (loss) income until the international entity is sold or liquidated. Gains and losses from transactions denominated in foreign currencies are reported in other income, net in the consolidated statement of income.

Income Taxes

Deferred income taxes are recognized by applying enacted statutory tax rates, applicable to future years, to temporary differences between the tax bases 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

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

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. During fiscal years 2015, 2014 and 2013, no customer accounted for 10 percent or more of total net sales. Approximately 17 percent of accounts receivable outstanding at June 30, 2015 are due from one customer. No single customer was greater than 10 percent of accounts receivable as of June 30, 2014.

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.