Disclosure informationDefined Benefit Plan, Assumptions Used in Calculations [Hierarchy]


Label:	Defined Benefit Plan, Assumptions Used in Calculations [Hierarchy]
Name:	DefinedBenefitPlanAssumptionsUsedInCalculationsHierarchy
Parent Topic:	PostEmploymentButPreRetirementCosts
Documentation:	Disclosure of information about assumptions made used in calculations related to defined benefit plan.
Commentary:
Level:	Detail
Information model:	[Hierarchy]
Completion state:	WIP
Status:
US GAAP XBRL Taxonomy Text Block:	NO TEXT BLOCK
US GAAP XBRL Taxonomy Network:	http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits \| Machine-readable \| Human-readable

Prototype of Disclosure (Representation structure): Machine Readable

Line	Label	Object Class (Data type)	Period Type	Report Element Name
1	Defined Benefit Plan, Assumptions Used in Calculations [Hierarchy]	Concept (Text/String)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedInCalculationsAbstract
2	Defined Benefit Plan, Assumptions Used in Calculations, Narrative Description	Concept (Text/String)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedInCalculationsNarrativeDescription
3	Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Hierarchy]	Concept (Text/String)	For Period	us-gaap:DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract
4	Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	Concept (Percent)	As Of	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
5	Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Support, Methodology and Source Data	Concept (Text/String)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateSupportMethodologyAndSourceData
6	Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Support, Bond Indices	Concept (Text/String)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateSupportBondIndices
7	Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	Concept (Percent)	As Of	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
8	Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Hierarchy]	Concept (Text/String)	For Period	us-gaap:DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract
9	Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	Concept (Percent)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
10	Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Support, Methodology and Source Data	Concept (Text/String)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateSupportMethodologyAndSourceData
11	Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Support, Bond Indices	Concept (Text/String)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateSupportBondIndices
12	Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	Concept (Percent)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
13	Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase	Concept (Percent)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
14	Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Change Due to Subsequent Interim Measurement	Concept (Text/String)	For Period	us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostChangeDueToSubsequentInterimMeasurement

From	Arcrole (predicate)	To
disclosures:DefinedBenefitPlanAssumptionsUsedInCalculationsHierarchy	rules-arcroles:disclosure-isSECType	fro:DisclosureType
disclosures:DefinedBenefitPlanAssumptionsUsedInCalculationsHierarchy	rules-arcroles:disclosure-hasConceptArrangementPattern	fro:Hierarchy