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average effective interest rate during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 falsefalseWeighted Average Interest Rate (%)4true0us-gaap_OtherLongtermDebtCurrentAndNoncurrentAbstractus-gaaptruenadurationNo definition 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definition available.falsefalseFMBs:5false0us-gaap_OtherLongTermDebtus-gaaptruecreditinstantNo definition 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both current and noncurrent portions, carrying amount as of the balance-sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 truefalseTotal FMBs6true0us-gaap_SecuredLongtermDebtCurrentAndNoncurrentAbstractus-gaaptruenadurationNo definition 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definition available.falsefalseSecured Notes:7false0us-gaap_SecuredDebtus-gaaptruecreditinstantNo definition 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value as of the balance sheet date , including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 truefalseTotal Secured Notes8true0us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstractus-gaaptruenadurationNo definition 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definition available.falsefalseUnsecured Notes:9false0us-gaap_UnsecuredDebtus-gaaptruecreditinstantNo definition 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the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Article 5 -Subsection 19, 20, 22 truefalseTotal Unsecured Notes10false0us-gaap_CapitalLeaseObligationsus-gaaptruecreditinstantNo definition 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equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 falsefalseCapital lease obligations11false0us-gaap_DebtInstrumentUnamortizedDiscountus-gaaptruedebitinstantNo definition 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amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number APB14-1 -Paragraph 31 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 21 -Paragraph 16, 20 falsefalseNet unamortized discount on debt12false0fe_LongTermDebtDueWithinOneYearfefalsecreditinstantLong Term Debt Due Within One 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Term Debt Due Within One YearNo authoritative reference available.falsefalseLong-term debt due within one year13false0us-gaap_LongTermDebtAndCapitalLeaseObligationsus-gaaptruecreditinstantNo definition 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of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section H truefalseLong-term debt and other long-term obligations4012Capitalization (Details 1) (USD $)NoRoundingUnKnownUnKnownUnKnowntruetrue