Disclosure informationOther than Temporary Impairment Losses, Investments [Roll Up]


Label:	Other than Temporary Impairment Losses, Investments [Roll Up]
Name:	OtherThanTemporaryImpairmentLossesInvestmentsRollUp
Parent Topic:	DebtAndEquitySecurities
Documentation:	Roll up of details of other than temporary impairment losses on investments.
Commentary:
Level:	Detail
Information model:	[Roll Up]
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/InvestmentsDebtAndEquitySecurities \| Machine-readable \| Human-readable

Prototype of Disclosure (Representation structure): Machine Readable

Line	Label	Object Class (Data type)	Period Type	Balance	Report Element Name
1	Other than Temporary Impairment Losses, Investments [Roll Up]	Concept (Text/String)	For Period		us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsAbstract
2	Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest [Roll Up]	Concept (Text/String)	For Period		us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAbstract
3	Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities	Concept (Monetary)	For Period	Debit	us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities
4	Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Held-to-maturity Securities	Concept (Monetary)	For Period	Debit	us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterestHeldtomaturitySecurities
5	Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Income (Loss), before Tax, Including Portion Attributable to Noncontrolling Interest, Total	Concept (Monetary)	For Period	Debit	us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest
6	Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, by Investment Category [Roll Up]	Concept (Text/String)	For Period		us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetByInvestmentCategoryAbstract
7	Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	Concept (Monetary)	For Period	Debit	us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities
8	Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Held-to-maturity Securities	Concept (Monetary)	For Period	Debit	us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetHeldtomaturitySecurities
9	Cost-method Investments, Other than Temporary Impairment	Concept (Monetary)	For Period	Debit	us-gaap:CostmethodInvestmentsOtherThanTemporaryImpairment
10	Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Total	Concept (Monetary)	For Period	Debit	us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
11	Other than Temporary Impairment Losses, Investments, Total	Concept (Monetary)	For Period	Debit	us-gaap:ImpairmentOfInvestments

From	Arcrole (predicate)	To
disclosures:OtherThanTemporaryImpairmentLossesInvestmentsRollUp	rules-arcroles:disclosure-isSECType	fro:DisclosureType
disclosures:OtherThanTemporaryImpairmentLossesInvestmentsRollUp	rules-arcroles:disclosure-hasConceptArrangementPattern	fro:RollUp
disclosures:OtherThanTemporaryImpairmentLossesInvestmentsRollUp	rules-arcroles:disclosure-requiresConcept	us-gaap:ImpairmentOfInvestments