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Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Article 5 false2Estimated fair value of mortgage loans held-for-investment15false 4micc_FinancingReceivableModificationsPreModificationRecordedInvestment2micc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse40000004000000USD$falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse40000004000000USD$falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryPre-modification amount of investment in financing receivables modified by troubled debt restructurings.No definition available.false2Carrying Value after Specific Valuation Allowance, Pre-Modification16false 4micc_FinancingReceivableModificationsPostModificationRecordedInvestment2micc_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse40000004000000USD$falsetruefalse2falsefalsefalse00falsefalsefalse3truefalsefalse40000004000000USD$falsetruefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryPost-modification amount of investment in financing receivables modified by troubled debt restructurings.No definition available.false2Carrying Value after Specific Valuation Allowance, Post-Modification17false 4micc_FinancingReceivableModificationsNumberOfContracts2micc_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse11falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse11falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerFinancing receivable modifications number of contracts.No definition available.false256Number of Mortgage LoansfalseInvestments (Mortgage Loans - Narrative) (Details) (USD $)NoRoundingUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.metlife.com/role/InvestmentsMortgageLoansNarrativeDetails517