# 【表紙】

【提出書類】 | 有価証券報告書
【根拠条文】 | 金融商品取引法第24条第１項
【提出先】 | 関東財務局長
【提出日】 | 平成29年6月23日
【事業年度】 | 第121期（自　平成28年4月1日　至　平成29年3月31日）
【会社名】 | 昭和電線ホールディングス株式会社
【英訳名】 | SWCC SHOWA HOLDINGS CO., LTD.
【代表者の役職氏名】 | 取締役社長　　中　島　文　明
【本店の所在の場所】 | 東京都港区虎ノ門四丁目３番１号
【電話番号】 | （03）5404－6951
【事務連絡者氏名】 | 経営企画部法務・IR広報グループ長　北　川　陽　一
【最寄りの連絡場所】 | 東京都港区虎ノ門四丁目３番１号
【電話番号】 | （03）5404－6951
【事務連絡者氏名】 | 経営企画部法務・IR広報グループ長　北　川　陽　一
【縦覧に供する場所】 | 株式会社東京証券取引所 （東京都中央区日本橋兜町２番１号）

E01336 58050 昭和電線ホールディングス株式会社 SWCC SHOWA HOLDINGS CO., LTD. 企業内容等の開示に関する内閣府令 第三号様式 Japan GAAP true CTE CTE 2016-04-01 2017-03-31 FY 2017-03-31 2015-04-01 2016-03-31 2016-03-31 1 false false false E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2017-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2017-03-31 jppfs_cor:CapitalStockMember E01336-000 2017-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2017-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2017-03-31 jppfs_cor:TreasuryStockMember E01336-000 2017-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2017-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2017-03-31 jppfs_cor:DeferredGainsOrLossesOnHedgesMember E01336-000 2017-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2017-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2017-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:CapitalStockMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:TreasuryStockMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:DeferredGainsOrLossesOnHedgesMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:LegalCapitalSurplusMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:LegalCapitalSurplusMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2017-03-31 jpcrp_cor:No1MajorShareholdersMember E01336-000 2017-03-31 jpcrp_cor:No2MajorShareholdersMember E01336-000 2017-03-31 jpcrp_cor:No3MajorShareholdersMember E01336-000 2017-03-31 jpcrp_cor:No4MajorShareholdersMember E01336-000 2017-03-31 jpcrp_cor:No5MajorShareholdersMember E01336-000 2017-03-31 jpcrp_cor:No6MajorShareholdersMember E01336-000 2017-03-31 jpcrp_cor:No7MajorShareholdersMember E01336-000 2017-03-31 jpcrp_cor:No8MajorShareholdersMember E01336-000 2017-03-31 jpcrp_cor:No9MajorShareholdersMember E01336-000 2017-03-31 jpcrp_cor:No10MajorShareholdersMember E01336-000 2015-04-01 2016-03-31 jpcrp_cor:ReconcilingItemsMember E01336-000 2015-04-01 2016-03-31 jpcrp_cor:TotalOfReportableSegmentsAndOthersMember E01336-000 2015-04-01 2016-03-31 jpcrp_cor:OperatingSegmentsNotIncludedInReportableSegmentsAndOtherRevenueGeneratingBusinessActivitiesMember E01336-000 2015-04-01 2016-03-31 jpcrp030000-asr_E01336-000:ElectricWireOperationsReportableSegmentsMember E01336-000 2015-04-01 2016-03-31 jpcrp030000-asr_E01336-000:PowerSystemOperationsReportableSegmentsMember E01336-000 2015-04-01 2016-03-31 jpcrp030000-asr_E01336-000:MagnetWireOperationsReportableSegmentsMember E01336-000 2015-04-01 2016-03-31 jpcrp030000-asr_E01336-000:CommunicationSystemOperationsReportableSegmentsMember E01336-000 2016-03-31 jpcrp_cor:ReconcilingItemsMember E01336-000 2015-04-01 2016-03-31 jpcrp030000-asr_E01336-000:DeviceOperationsReportableSegmentsMember E01336-000 2016-03-31 jpcrp_cor:TotalOfReportableSegmentsAndOthersMember E01336-000 2016-03-31 jpcrp_cor:OperatingSegmentsNotIncludedInReportableSegmentsAndOtherRevenueGeneratingBusinessActivitiesMember E01336-000 2016-03-31 jpcrp030000-asr_E01336-000:ElectricWireOperationsReportableSegmentsMember E01336-000 2016-03-31 jpcrp030000-asr_E01336-000:PowerSystemOperationsReportableSegmentsMember E01336-000 2016-03-31 jpcrp030000-asr_E01336-000:MagnetWireOperationsReportableSegmentsMember E01336-000 2016-03-31 jpcrp030000-asr_E01336-000:CommunicationSystemOperationsReportableSegmentsMember E01336-000 2016-03-31 jpcrp030000-asr_E01336-000:DeviceOperationsReportableSegmentsMember E01336-000 2015-04-01 2016-03-31 jpcrp_cor:UnallocatedAmountsAndEliminationMember E01336-000 2017-03-31 jpcrp_cor:ReconcilingItemsMember E01336-000 2017-03-31 jpcrp_cor:TotalOfReportableSegmentsAndOthersMember E01336-000 2017-03-31 jpcrp_cor:OperatingSegmentsNotIncludedInReportableSegmentsAndOtherRevenueGeneratingBusinessActivitiesMember E01336-000 2017-03-31 jpcrp030000-asr_E01336-000:DeviceOperationsReportableSegmentsMember E01336-000 2017-03-31 jpcrp030000-asr_E01336-000:CommunicationSystemOperationsReportableSegmentsMember E01336-000 2017-03-31 jpcrp030000-asr_E01336-000:MagnetWireOperationsReportableSegmentsMember E01336-000 2017-03-31 jpcrp030000-asr_E01336-000:PowerSystemOperationsReportableSegmentsMember E01336-000 2017-03-31 jpcrp030000-asr_E01336-000:ElectricWireOperationsReportableSegmentsMember E01336-000 2016-04-01 2017-03-31 jpcrp_cor:ReconcilingItemsMember E01336-000 2016-04-01 2017-03-31 jpcrp_cor:TotalOfReportableSegmentsAndOthersMember E01336-000 2016-04-01 2017-03-31 jpcrp_cor:OperatingSegmentsNotIncludedInReportableSegmentsAndOtherRevenueGeneratingBusinessActivitiesMember E01336-000 2016-04-01 2017-03-31 jpcrp030000-asr_E01336-000:DeviceOperationsReportableSegmentsMember E01336-000 2016-04-01 2017-03-31 jpcrp030000-asr_E01336-000:CommunicationSystemOperationsReportableSegmentsMember E01336-000 2016-04-01 2017-03-31 jpcrp030000-asr_E01336-000:MagnetWireOperationsReportableSegmentsMember E01336-000 2016-04-01 2017-03-31 jpcrp030000-asr_E01336-000:PowerSystemOperationsReportableSegmentsMember E01336-000 2016-04-01 2017-03-31 jpcrp030000-asr_E01336-000:ElectricWireOperationsReportableSegmentsMember E01336-000 2016-04-01 2017-03-31 jpcrp_cor:UnallocatedAmountsAndEliminationMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:TreasuryStockMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2016-03-31 jppfs_cor:CapitalStockMember E01336-000 2016-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2016-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2016-03-31 jppfs_cor:TreasuryStockMember E01336-000 2016-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2016-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2016-03-31 jppfs_cor:DeferredGainsOrLossesOnHedgesMember E01336-000 2016-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2016-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2016-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2016-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:LegalCapitalSurplusMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:LegalCapitalSurplusMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:LegalCapitalSurplusMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2017-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2016-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2015-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2017-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2016-04-01 2017-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2016-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2015-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2014-04-01 2015-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2014-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2013-04-01 2014-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2013-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2012-04-01 2013-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2015-03-31 jppfs_cor:DeferredGainsOrLossesOnHedgesMember E01336-000 2015-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2015-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2015-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2015-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2015-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2015-03-31 jppfs_cor:CapitalStockMember E01336-000 2015-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2015-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2015-03-31 jppfs_cor:TreasuryStockMember E01336-000 2015-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:CapitalStockMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2015-04-01 2016-03-31 jppfs_cor:DeferredGainsOrLossesOnHedgesMember E01336-000 2017-06-23 E01336-000 2017-03-31 E01336-000 2016-04-01 2017-03-31 E01336-000 2016-03-31 E01336-000 2015-04-01 2016-03-31 E01336-000 2015-03-31 E01336-000 2014-04-01 2015-03-31 E01336-000 2014-03-31 E01336-000 2013-04-01 2014-03-31 E01336-000 2013-03-31 E01336-000 2012-04-01 2013-03-31 iso4217:JPY xbrli:shares xbrli:shares xbrli:pure iso4217:JPY