- 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

Name:	invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ 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

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rog_DerivativeContractNameAxis=rog_KRWUSDNotionalAmountofForeignCurrencyDerivativeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rog_DerivativeContractNameAxis=rog_EURCNYNotionalAmountofForeignCurrencyDerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rog_DerivativeContractNameAxis=rog_JPYEURNotionalAmountofForeignCurrencyDerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rog_DerivativeContractNameAxis=rog_EURUSDNotionalAmountofForeignCurrencyDerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rog_DerivativeContractNameAxis=rog_EURHUFNotionalAmountofForeignCurrencyDerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rog_DerivativeContractNameAxis=rog_USDCNYNotionalAmountofForeignCurrencyDerivativeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rog_CopperJanuary2018March2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rog_CopperApril2018June2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rog_CopperJuly2018September2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rog_CopperOctober2018December2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Hedging Transactions and Derivative Financial Instruments (Notional Values of Derivative Instruments) (Detail)	Dec. 31, 2017 JPY (¥) T / mo	Dec. 31, 2017 EUR (€) T / mo	Dec. 31, 2017 USD ($) T / mo	Dec. 31, 2017 KRW (₩) T / mo
Not Designated as Hedging Instrument \| Foreign Exchange Forward \| USD/KRW Notional Amount of Foreign Currency Derivatives
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives \| ₩				₩ 4,503,980,000
Not Designated as Hedging Instrument \| Foreign Exchange Forward \| EUR/CNY Notional Amount of Foreign Currency Derivatives
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives \| ₩				₩ 1,049,585
Not Designated as Hedging Instrument \| Foreign Exchange Forward \| JPY/EUR Notional Amount of Foreign Currency Derivatives
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives \| ¥	¥ 325,000,000
Not Designated as Hedging Instrument \| Foreign Exchange Forward \| EUR/USD Notional Amount of Foreign Currency Derivatives
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives \| €		€ 7,068,140
Not Designated as Hedging Instrument \| Foreign Exchange Forward \| EUR/HUF Notional Amount of Foreign Currency Derivatives
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives \| €		€ 563,119
Not Designated as Hedging Instrument \| Foreign Exchange Forward \| USD/CNY Notional Amount of Foreign Currency Derivatives
Derivative [Line Items]
Notional Values of Foreign Currency Derivatives \| $			$ 12,828,710
Designated as Hedging Instrument \| Copper, January 2018 - March 2018
Derivative [Line Items]
Notional Value of Copper Derivatives	140	140	140	140
Designated as Hedging Instrument \| Copper, April 2018 - June 2018
Derivative [Line Items]
Notional Value of Copper Derivatives	153	153	153	153
Designated as Hedging Instrument \| Copper, July 2018 - September 2018
Derivative [Line Items]
Notional Value of Copper Derivatives	153	153	153	153
Designated as Hedging Instrument \| Copper, October 2018 - December 2018
Derivative [Line Items]
Notional Value of Copper Derivatives	119	119	119	119