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| General Discussion of Derivative Instruments and Hedging Activities | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Disclosure that addresses (a) how and why an entity uses derivative instruments, (b) how derivative instruments and related hedged items are accounted for, and (c) how derivative instruments affect an entity's financial position, results of operations, and cash flows. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
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| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:ObjectivesForUsingDerivativeInstruments | parent-child | http://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivities | |
us-gaap:DescriptionOfDerivativeActivityVolume | parent-child | http://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivities | |
us-gaap:DescriptionOfDerivativeRiskManagementPolicy | parent-child | http://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivities | |
us-gaap:DescriptionOfTradingActivitiesAndManagementOfRelatedRisks | parent-child | http://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivities |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:GeneralDiscussionOfDerivativeInstrumentsAndHedgingActivitiesAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivities |