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 | us-gaap:PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesCurrentAndNoncurrent | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperations |
 | us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperationsStatementTable |
 | us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperations |
 | us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperationsStatementTable |
 | us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits |
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