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Hedging Transactions and Derivative Financial Instruments (Notional Values of Derivative Instruments) (Details) | Mar. 31, 2015 Copper, April 2015 - June 2015 [Member] | Mar. 31, 2015 Copper July 2015 - September 2015 [Member] | Mar. 31, 2015 Copper, October 2015 - December 2015 [Member] | Mar. 31, 2015 Copper, January 2016 - March 2016 [Member] | Mar. 31, 2015 Copper, April 2016 - June 2016 [Member] | Mar. 31, 2015 Copper, July 2016 - September 2016 [Member] | Mar. 31, 2015 CNY/EUR Notional Amount of Foreign Currency Derivatives [Member] CNY | Mar. 31, 2015 USD/EUR Notional Amount of Foreign Currency Derivatives [Member] USD ($) | Mar. 31, 2015 EUR/USD Notional Amount of Foreign Currency Derivatives [Member] EUR (€) | Mar. 31, 2015 JPY/USD Notional Amount of Foreign Currency Derivatives [Member] JPY (¥) | Mar. 31, 2015 HUF/EUR Notional Amount of Foreign Currency Derivatives [Member] HUF | Mar. 31, 2015 JPY/EUR Notional Amount of Foreign Currency Derivatives [Member] JPY (¥) | Mar. 31, 2015 CNY/USD Notional Amount of Foreign Currency Derivatives [Member] CNY
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Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Value of Copper Derivatives | 150 invest_DerivativeNonmonetaryNotionalAmount / us-gaap_StatementScenarioAxis = rog_CopperApril2015June2015Member | 135 invest_DerivativeNonmonetaryNotionalAmount / us-gaap_StatementScenarioAxis = rog_CopperJuly2015September2015Member | 123 invest_DerivativeNonmonetaryNotionalAmount / us-gaap_StatementScenarioAxis = rog_CopperOctober2015December2015Member | 100 invest_DerivativeNonmonetaryNotionalAmount / us-gaap_StatementScenarioAxis = rog_CopperJanuary2016March2016Member | 50 invest_DerivativeNonmonetaryNotionalAmount / us-gaap_StatementScenarioAxis = rog_CopperApril2016June2016Member | 20 invest_DerivativeNonmonetaryNotionalAmount / us-gaap_StatementScenarioAxis = rog_CopperJuly2016September2016Member |  |  |  |  |  |  |
Notional Amount of Foreign Currency Derivatives |  |  |  |  |  |  | 683,664 us-gaap_DerivativeAssetNotionalAmount / us-gaap_StatementScenarioAxis = rog_CNYEURNotionalAmountofForeignCurrencyDerivativesMember | $ 3,000,000 us-gaap_DerivativeAssetNotionalAmount / us-gaap_StatementScenarioAxis = rog_USDEURNotionalAmountofForeignCurrencyDerivativesMember | € 10,062,000 us-gaap_DerivativeAssetNotionalAmount / us-gaap_StatementScenarioAxis = rog_EURUSDNotionalAmountofForeignCurrencyDerivativesMember | ¥ 160,000,000 us-gaap_DerivativeAssetNotionalAmount / us-gaap_StatementScenarioAxis = rog_JPYUSDNotionalAmountofForeignCurrencyDerivativesMember | 30,000,000 us-gaap_DerivativeAssetNotionalAmount / us-gaap_StatementScenarioAxis = rog_HUFEURNotionalAmountofForeignCurrencyDerivativesMember | ¥ 180,000,000 us-gaap_DerivativeAssetNotionalAmount / us-gaap_StatementScenarioAxis = rog_JPYEURNotionalAmountofForeignCurrencyDerivativesMember | 141,000,000 us-gaap_DerivativeAssetNotionalAmount / us-gaap_StatementScenarioAxis = rog_CNYUSDNotionalAmountofForeignCurrencyDerivativesMember

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- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959 + Details
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- Details
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