# 【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】 | 2020年６月29日
【事業年度】 | 第124期（自　2019年４月１日　至　2020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】 | 代表取締役社長　　長　谷　川　隆　代
【本店の所在の場所】 | 川崎市川崎区日進町１番14号
【電話番号】 | （044）223－0520
【事務連絡者氏名】 | 人事総務統括部法務課長　上　林　克　寿
【最寄りの連絡場所】 | 川崎市川崎区日進町１番14号
【電話番号】 | （044）223－0521
【事務連絡者氏名】 | 人事総務統括部法務課長　上　林　克　寿
【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 2019-04-01 2020-03-31 FY 2020-03-31 2018-04-01 2019-03-31 2019-03-31 1 false false false E01336-000 2020-06-29 jpcrp030000-asr_E01336-000:YujiSakakuraMember E01336-000 2018-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2018-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2018-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2018-03-31 jppfs_cor:CapitalStockMember E01336-000 2018-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2018-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2019-03-31 jppfs_cor:CapitalStockMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:TreasuryStockMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2019-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2019-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2019-03-31 jppfs_cor:TreasuryStockMember E01336-000 2019-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2019-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2019-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2019-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2020-03-31 jpcrp_cor:TotalOfReportableSegmentsAndOthersMember E01336-000 2020-03-31 jpcrp_cor:OperatingSegmentsNotIncludedInReportableSegmentsAndOtherRevenueGeneratingBusinessActivitiesMember E01336-000 2020-03-31 jpcrp030000-asr_E01336-000:MagnetWireOperationsReportableSegmentsMember E01336-000 2020-03-31 jpcrp030000-asr_E01336-000:PowerSystemOperationsReportableSegmentsMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:ReconcilingItemsMember E01336-000 2020-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2019-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2018-03-31 jppfs_cor:RemeasurementsOfDefinedBenefitPlansMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember E01336-000 2017-04-01 2018-03-31 jppfs_cor:NonConsolidatedMember 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 2018-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2019-03-31 jpcrp_cor:Row5Member E01336-000 2019-03-31 jpcrp_cor:Row6Member E01336-000 2020-03-31 jpcrp_cor:OtherOperatingSegmentsAxisMember E01336-000 2020-06-29 jpcrp_cor:OrdinaryShareMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2018-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2018-03-31 jppfs_cor:TreasuryStockMember E01336-000 2018-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:CapitalStockMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2019-03-31 jpcrp_cor:Row2Member E01336-000 2019-03-31 jpcrp_cor:Row3Member E01336-000 2019-03-31 jpcrp_cor:Row4Member E01336-000 2020-06-29 jpcrp_cor:Row1Member E01336-000 2020-06-29 jpcrp_cor:Row2Member E01336-000 2020-06-29 jpcrp_cor:Row3Member E01336-000 2020-06-29 jpcrp_cor:Row4Member E01336-000 2020-06-29 jpcrp030000-asr_E01336-000:TakayoHasegawaMember E01336-000 2020-06-29 jpcrp030000-asr_E01336-000:DongchengZhangMember E01336-000 2020-06-29 jpcrp030000-asr_E01336-000:KiyoshiTogawaMember E01336-000 2020-06-29 jpcrp030000-asr_E01336-000:RyuichiHiraiMember E01336-000 2020-06-29 jpcrp030000-asr_E01336-000:GuoqiangHuMember E01336-000 2020-06-29 jpcrp030000-asr_E01336-000:TakashiTogawaMember E01336-000 2020-03-31 jpcrp_cor:OrdinarySharesTreasurySharesSharesWithFullVotingRightsTreasurySharesEtcMember E01336-000 2020-03-31 jpcrp_cor:SharesWithFullVotingRightsOtherMember E01336-000 2020-03-31 jpcrp_cor:OrdinarySharesSharesWithFullVotingRightsOtherMember E01336-000 2020-03-31 jpcrp_cor:SharesLessThanOneUnitMember E01336-000 2020-03-31 jpcrp_cor:OrdinarySharesSharesLessThanOneUnitMember E01336-000 2019-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2019-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2018-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2020-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2020-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:CapitalStockMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:TreasuryStockMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonControllingInterestsMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2020-03-31 jppfs_cor:RetainedEarningsBroughtForwardMember jppfs_cor:NonConsolidatedMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalStockMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsBroughtForwardMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2020-03-31 jppfs_cor:NonConsolidatedMember jpcrp_cor:OtherOperatingSegmentsAxisMember E01336-000 2020-06-29 E01336-000 2020-03-31 E01336-000 2019-04-01 2020-03-31 E01336-000 2019-03-31 E01336-000 2018-04-01 2019-03-31 E01336-000 2018-03-31 E01336-000 2017-04-01 2018-03-31 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 2020-03-31 jpcrp030000-asr_E01336-000:ElectricWireOperationsReportableSegmentsMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:TotalOfReportableSegmentsAndOthersMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:OperatingSegmentsNotIncludedInReportableSegmentsAndOtherRevenueGeneratingBusinessActivitiesMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:ReportableSegmentsMember E01336-000 2019-04-01 2020-03-31 jpcrp030000-asr_E01336-000:MagnetWireOperationsReportableSegmentsMember E01336-000 2019-04-01 2020-03-31 jpcrp030000-asr_E01336-000:PowerSystemOperationsReportableSegmentsMember E01336-000 2019-04-01 2020-03-31 jpcrp030000-asr_E01336-000:ElectricWireOperationsReportableSegmentsMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:UnallocatedAmountsAndEliminationMember E01336-000 2020-03-31 jpcrp_cor:Row1Member E01336-000 2020-03-31 jpcrp_cor:Row2Member E01336-000 2020-03-31 jpcrp_cor:Row3Member E01336-000 2020-03-31 jpcrp_cor:Row4Member E01336-000 2019-03-31 jpcrp_cor:Row1Member E01336-000 2020-03-31 jpcrp_cor:Row6Member E01336-000 2020-03-31 jppfs_cor:CapitalSurplusMember E01336-000 2020-03-31 jppfs_cor:RetainedEarningsMember E01336-000 2020-03-31 jppfs_cor:TreasuryStockMember E01336-000 2020-03-31 jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2020-03-31 jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2020-03-31 jppfs_cor:RevaluationReserveForLandMember E01336-000 2020-03-31 jpcrp_cor:OrdinaryShareMember E01336-000 2020-03-31 jpcrp_cor:SharesWithNoVotingRightsMember E01336-000 2020-03-31 jpcrp_cor:SharesWithRestrictedVotingRightsTreasurySharesEtcMember E01336-000 2020-03-31 jpcrp_cor:SharesWithRestrictedVotingRightsOtherMember E01336-000 2020-03-31 jpcrp_cor:SharesWithFullVotingRightsTreasurySharesEtcMember E01336-000 2019-03-31 jpcrp_cor:TotalOfReportableSegmentsAndOthersMember E01336-000 2019-03-31 jpcrp_cor:OperatingSegmentsNotIncludedInReportableSegmentsAndOtherRevenueGeneratingBusinessActivitiesMember E01336-000 2019-03-31 jpcrp030000-asr_E01336-000:ElectricWireOperationsReportableSegmentsMember E01336-000 2019-03-31 jpcrp030000-asr_E01336-000:PowerSystemOperationsReportableSegmentsMember E01336-000 2019-03-31 jpcrp030000-asr_E01336-000:MagnetWireOperationsReportableSegmentsMember E01336-000 2018-04-01 2019-03-31 jpcrp_cor:UnallocatedAmountsAndEliminationMember E01336-000 2020-03-31 jpcrp_cor:ReconcilingItemsMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:CapitalSurplusMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ShareholdersEquityMember E01336-000 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2020-03-31 jppfs_cor:ShareholdersEquityMember E01336-000 2020-03-31 jppfs_cor:CapitalStockMember E01336-000 2020-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01336-000 2019-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01336-000 2018-03-31 jppfs_cor:LegalRetainedEarningsMember jppfs_cor:NonConsolidatedMember E01336-000 2020-03-31 jpcrp_cor:Row5Member E01336-000 2020-06-29 jpcrp_cor:Row5Member E01336-000 2019-04-01 2020-03-31 jpcrp_cor:OutsideCorporateAuditorsMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:OutsideDirectorsMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:CorporateAuditorsExcludingOutsideCorporateAuditorsMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:DirectorsAppointedAsAuditAndSupervisoryCommitteeMembersExcludingOutsideDirectorsMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:DirectorsExcludingAuditAndSupervisoryCommitteeMembersAndOutsideDirectorsMember E01336-000 2019-04-01 2020-03-31 jpcrp_cor:DirectorsExcludingOutsideDirectorsMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationAndTranslationAdjustmentsMember E01336-000 2019-04-01 2020-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:RetainedEarningsBroughtForwardMember jppfs_cor:NonConsolidatedMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:RetainedEarningsMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:TreasuryStockMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:ForeignCurrencyTranslationAdjustmentMember E01336-000 2018-04-01 2019-03-31 jppfs_cor:NonConsolidatedMember jppfs_cor:OtherCapitalSurplusMember E01336-000 2020-03-31 jpcrp_cor:No1MajorShareholdersMember E01336-000 2020-03-31 jpcrp_cor:No2MajorShareholdersMember E01336-000 2020-03-31 jpcrp_cor:No3MajorShareholdersMember E01336-000 2020-03-31 jpcrp_cor:No4MajorShareholdersMember E01336-000 2020-03-31 jpcrp_cor:No5MajorShareholdersMember E01336-000 2020-03-31 jpcrp_cor:No6MajorShareholdersMember E01336-000 2020-03-31 jpcrp_cor:No7MajorShareholdersMember E01336-000 2020-03-31 jpcrp_cor:No8MajorShareholdersMember E01336-000 2020-03-31 jpcrp_cor:No9MajorShareholdersMember E01336-000 2020-03-31 jpcrp_cor:No10MajorShareholdersMember E01336-000 2018-04-01 2019-03-31 jpcrp_cor:ReconcilingItemsMember E01336-000 2018-04-01 2019-03-31 jpcrp_cor:TotalOfReportableSegmentsAndOthersMember E01336-000 2018-04-01 2019-03-31 jpcrp_cor:OperatingSegmentsNotIncludedInReportableSegmentsAndOtherRevenueGeneratingBusinessActivitiesMember E01336-000 2018-04-01 2019-03-31 jpcrp030000-asr_E01336-000:ElectricWireOperationsReportableSegmentsMember E01336-000 2018-04-01 2019-03-31 jpcrp030000-asr_E01336-000:PowerSystemOperationsReportableSegmentsMember E01336-000 2018-04-01 2019-03-31 jpcrp030000-asr_E01336-000:MagnetWireOperationsReportableSegmentsMember E01336-000 2019-03-31 jpcrp_cor:ReconcilingItemsMember E01336-000 2019-04-01 2020-03-31 jpcrp030000-asr_E01336-000:OutsideDirectorsAuditAndSupervisoryCommitteeMember E01336-000 2019-04-01 2020-03-31 jpcrp030000-asr_E01336-000:OutsideDirectorsBeforeTransitionToACompanyWithAnAuditAndSupervisoryCommitteeMember iso4217:JPY xbrli:shares xbrli:shares xbrli:pure iso4217:JPY