3.19.3.a.u2 html 576 609 1 true 154 0 false 7 false false R1.htm 0001001 - Document - Cover Sheet http://www.ielp.com/role/Cover Cover Cover 1 false false R2.htm 1001002 - Statement - Consolidated Balance Sheets Sheet http://www.ielp.com/role/ConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 1002003 - Statement - Consolidated Balance Sheets (Parentheticals) Sheet http://www.ielp.com/role/ConsolidatedBalanceSheetsParentheticals Consolidated Balance Sheets (Parentheticals) Statements 3 false false R4.htm 1003004 - Statement - Consolidated Statements of Operations Sheet http://www.ielp.com/role/ConsolidatedStatementsofOperations Consolidated Statements of Operations Statements 4 false false R5.htm 1004005 - Statement - Consolidated Statements of Comprehensive Income Sheet http://www.ielp.com/role/ConsolidatedStatementsofComprehensiveIncome Consolidated Statements of Comprehensive Income Statements 5 false false R6.htm 1005006 - Statement - Consolidated Statement of Changes in Equity Sheet http://www.ielp.com/role/ConsolidatedStatementofChangesinEquity Consolidated Statement of Changes in Equity Statements 6 false false R7.htm 1006007 - Statement - Consolidated Statements of Cash Flows Sheet http://www.ielp.com/role/ConsolidatedStatementsofCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 2101101 - Disclosure - Description of Business Sheet http://www.ielp.com/role/DescriptionofBusiness Description of Business Notes 8 false false R9.htm 2103102 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies Sheet http://www.ielp.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies Basis of Presentation and Summary of Significant Accounting Policies Notes 9 false false R10.htm 2107103 - Disclosure - Related Party Transactions Sheet http://www.ielp.com/role/RelatedPartyTransactions Related Party Transactions Notes 10 false false R11.htm 2109104 - Disclosure - Investments Sheet http://www.ielp.com/role/Investments Investments Notes 11 false false R12.htm 2113105 - Disclosure - Fair Value Measurements Sheet http://www.ielp.com/role/FairValueMeasurements Fair Value Measurements Notes 12 false false R13.htm 2119106 - Disclosure - Financial Instruments Sheet http://www.ielp.com/role/FinancialInstruments Financial Instruments Notes 13 false false R14.htm 2125107 - Disclosure - Inventories, Net (Notes) Notes http://www.ielp.com/role/InventoriesNetNotes Inventories, Net (Notes) Notes 14 false false R15.htm 2128108 - Disclosure - Property, Plant and Equipment, Net Sheet http://www.ielp.com/role/PropertyPlantandEquipmentNet Property, Plant and Equipment, Net Notes 15 false false R16.htm 2131109 - Disclosure - Goodwill and Intangible Assets, Net Sheet http://www.ielp.com/role/GoodwillandIntangibleAssetsNet Goodwill and Intangible Assets, Net Notes 16 false false R17.htm 2137110 - Disclosure - Leases Sheet http://www.ielp.com/role/Leases Leases Notes 17 false false R18.htm 2141111 - Disclosure - Debt Sheet http://www.ielp.com/role/Debt Debt Notes 18 false false R19.htm 2147112 - Disclosure - Net Income Per LP Unit Sheet http://www.ielp.com/role/NetIncomePerLPUnit Net Income Per LP Unit Notes 19 false false R20.htm 2150113 - Disclosure - Segment and Geographic Reporting Sheet http://www.ielp.com/role/SegmentandGeographicReporting Segment and Geographic Reporting Notes 20 false false R21.htm 2157114 - Disclosure - Discontinued Operations (Notes) Notes http://www.ielp.com/role/DiscontinuedOperationsNotes Discontinued Operations (Notes) Notes 21 false false R22.htm 2160115 - Disclosure - Income Taxes Sheet http://www.ielp.com/role/IncomeTaxes Income Taxes Notes 22 false false R23.htm 2165116 - Disclosure - Changes in Accumulated Other Comprehensive Loss Sheet http://www.ielp.com/role/ChangesinAccumulatedOtherComprehensiveLoss Changes in Accumulated Other Comprehensive Loss Notes 23 false false R24.htm 2168117 - Disclosure - Other Income (Loss), Net Sheet http://www.ielp.com/role/OtherIncomeLossNet Other Income (Loss), Net Notes 24 false false R25.htm 2171118 - Disclosure - Commitments and Contingencies Sheet http://www.ielp.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 25 false false R26.htm 2175119 - Disclosure - Pensions and Other Post-Retirement Benefit Plans (Notes) Notes http://www.ielp.com/role/PensionsandOtherPostRetirementBenefitPlansNotes Pensions and Other Post-Retirement Benefit Plans (Notes) Notes 26 false false R27.htm 2178120 - Disclosure - Supplemental Cash Flow Information Sheet http://www.ielp.com/role/SupplementalCashFlowInformation Supplemental Cash Flow Information Notes 27 false false R28.htm 2181121 - Disclosure - Subsequent Events Sheet http://www.ielp.com/role/SubsequentEvents Subsequent Events Notes 28 false false R29.htm 2183122 - Disclosure - Quarterly Financial Data (Unaudited) Sheet http://www.ielp.com/role/QuarterlyFinancialDataUnaudited Quarterly Financial Data (Unaudited) Notes 29 false false R30.htm 2186123 - Disclosure - Schedule I Sheet http://www.ielp.com/role/ScheduleI Schedule I Notes 30 false false R31.htm 2204201 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Policies) Sheet http://www.ielp.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies Basis of Presentation and Summary of Significant Accounting Policies (Policies) Policies http://www.ielp.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies 31 false false R32.htm 2214202 - Disclosure - Fair Value Measurements (Policies) Sheet http://www.ielp.com/role/FairValueMeasurementsPolicies Fair Value Measurements (Policies) Policies http://www.ielp.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies 32 false false R33.htm 2232203 - Disclosure - Goodwill and Intangible Assets, Net (Policies) Sheet http://www.ielp.com/role/GoodwillandIntangibleAssetsNetPolicies Goodwill and Intangible Assets, Net (Policies) Policies http://www.ielp.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies 33 false false R34.htm 2251204 - Disclosure - Segment and Geographic Reporting (Policies) Sheet http://www.ielp.com/role/SegmentandGeographicReportingPolicies Segment and Geographic Reporting (Policies) Policies http://www.ielp.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies 34 false false R35.htm 2305301 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Tables) Sheet http://www.ielp.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesTables Basis of Presentation and Summary of Significant Accounting Policies (Tables) Tables http://www.ielp.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies 35 false false R36.htm 2310302 - Disclosure - Investments (Tables) Sheet http://www.ielp.com/role/InvestmentsTables Investments (Tables) Tables http://www.ielp.com/role/Investments 36 false false R37.htm 2315303 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.ielp.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.ielp.com/role/FairValueMeasurements 37 false false R38.htm 2320304 - Disclosure - Financial Instruments (Tables) Sheet http://www.ielp.com/role/FinancialInstrumentsTables Financial Instruments (Tables) Tables http://www.ielp.com/role/FinancialInstruments 38 false false R39.htm 2326305 - Disclosure - Inventories, Net (Tables) Sheet http://www.ielp.com/role/InventoriesNetTables Inventories, Net (Tables) Tables http://www.ielp.com/role/InventoriesNetNotes 39 false false R40.htm 2329306 - Disclosure - Property, Plant and Equipment, Net (Tables) Sheet http://www.ielp.com/role/PropertyPlantandEquipmentNetTables Property, Plant and Equipment, Net (Tables) Tables http://www.ielp.com/role/PropertyPlantandEquipmentNet 40 false false R41.htm 2333307 - Disclosure - Goodwill and Intangible Assets, Net (Tables) Sheet http://www.ielp.com/role/GoodwillandIntangibleAssetsNetTables Goodwill and Intangible Assets, Net (Tables) Tables http://www.ielp.com/role/GoodwillandIntangibleAssetsNet 41 false false R42.htm 2338308 - Disclosure - Leases (Tables) Sheet http://www.ielp.com/role/LeasesTables Leases (Tables) Tables http://www.ielp.com/role/Leases 42 false false R43.htm 2342309 - Disclosure - Debt (Tables) Sheet http://www.ielp.com/role/DebtTables Debt (Tables) Tables http://www.ielp.com/role/Debt 43 false false R44.htm 2348310 - Disclosure - Net Income Per LP Unit (Tables) Sheet http://www.ielp.com/role/NetIncomePerLPUnitTables Net Income Per LP Unit (Tables) Tables http://www.ielp.com/role/NetIncomePerLPUnit 44 false false R45.htm 2352311 - Disclosure - Segment and Geographic Reporting (Tables) Sheet http://www.ielp.com/role/SegmentandGeographicReportingTables Segment and Geographic Reporting (Tables) Tables http://www.ielp.com/role/SegmentandGeographicReporting 45 false false R46.htm 2358312 - Disclosure - Discontinued Operations (Tables) Sheet http://www.ielp.com/role/DiscontinuedOperationsTables Discontinued Operations (Tables) Tables http://www.ielp.com/role/DiscontinuedOperationsNotes 46 false false R47.htm 2361313 - Disclosure - Income Taxes (Tables) Sheet http://www.ielp.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.ielp.com/role/IncomeTaxes 47 false false R48.htm 2366314 - Disclosure - Changes in Accumulated Other Comprehensive Loss (Tables) Sheet http://www.ielp.com/role/ChangesinAccumulatedOtherComprehensiveLossTables Changes in Accumulated Other Comprehensive Loss (Tables) Tables http://www.ielp.com/role/ChangesinAccumulatedOtherComprehensiveLoss 48 false false R49.htm 2369315 - Disclosure - Other Income (Loss), Net (Tables) Sheet http://www.ielp.com/role/OtherIncomeLossNetTables Other Income (Loss), Net (Tables) Tables http://www.ielp.com/role/OtherIncomeLossNet 49 false false R50.htm 2372316 - Disclosure - Commitments and Contingencies (Tables) Sheet http://www.ielp.com/role/CommitmentsandContingenciesTables Commitments and Contingencies (Tables) Tables http://www.ielp.com/role/CommitmentsandContingencies 50 false false R51.htm 2376317 - Disclosure - Pensions and Other Post-Retirement Benefit Plans (Tables) Sheet http://www.ielp.com/role/PensionsandOtherPostRetirementBenefitPlansTables Pensions and Other Post-Retirement Benefit Plans (Tables) Tables http://www.ielp.com/role/PensionsandOtherPostRetirementBenefitPlansNotes 51 false false R52.htm 2379318 - Disclosure - Supplemental Cash Flow Information (Tables) Sheet http://www.ielp.com/role/SupplementalCashFlowInformationTables Supplemental Cash Flow Information (Tables) Tables http://www.ielp.com/role/SupplementalCashFlowInformation 52 false false R53.htm 2384319 - Disclosure - Quarterly Financial Data (Unaudited) (Tables) Sheet http://www.ielp.com/role/QuarterlyFinancialDataUnauditedTables Quarterly Financial Data (Unaudited) (Tables) Tables http://www.ielp.com/role/QuarterlyFinancialDataUnaudited 53 false false R54.htm 2387320 - Disclosure - Schedule I (Tables) Sheet http://www.ielp.com/role/ScheduleITables Schedule I (Tables) Tables http://www.ielp.com/role/ScheduleI 54 false false R55.htm 2402401 - Disclosure - (Details) Sheet http://www.ielp.com/role/Details (Details) Details 55 false false R56.htm 2406402 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies Variable Interest Entities (Details) Sheet http://www.ielp.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesVariableInterestEntitiesDetails Basis of Presentation and Summary of Significant Accounting Policies Variable Interest Entities (Details) Details 56 false false R57.htm 2408403 - Disclosure - Related Party Transactions (Details) Sheet http://www.ielp.com/role/RelatedPartyTransactionsDetails Related Party Transactions (Details) Details http://www.ielp.com/role/RelatedPartyTransactions 57 false false R58.htm 2411404 - Disclosure - Investments Investment Segment (Details) Sheet http://www.ielp.com/role/InvestmentsInvestmentSegmentDetails Investments Investment Segment (Details) Details 58 false false R59.htm 2412405 - Disclosure - Investments Other Segments and Holding Company (Details) Sheet http://www.ielp.com/role/InvestmentsOtherSegmentsandHoldingCompanyDetails Investments Other Segments and Holding Company (Details) Details 59 false false R60.htm 2416406 - Disclosure - Fair Value Measurements Fair Value Measurement (Details) Sheet http://www.ielp.com/role/FairValueMeasurementsFairValueMeasurementDetails Fair Value Measurements Fair Value Measurement (Details) Details 60 false false R61.htm 2417407 - Disclosure - Fair Value Measurements Changes in Fair Value Level 3 (Details) Sheet http://www.ielp.com/role/FairValueMeasurementsChangesinFairValueLevel3Details Fair Value Measurements Changes in Fair Value Level 3 (Details) Details 61 false false R62.htm 2418408 - Disclosure - Fair Value Measurements Narrative (Details) Sheet http://www.ielp.com/role/FairValueMeasurementsNarrativeDetails Fair Value Measurements Narrative (Details) Details 62 false false R63.htm 2421409 - Disclosure - Financial Instruments Derivative Activities Table (Details) Sheet http://www.ielp.com/role/FinancialInstrumentsDerivativeActivitiesTableDetails Financial Instruments Derivative Activities Table (Details) Details 63 false false R64.htm 2422410 - Disclosure - Financial Instruments Derivatives Not Designated as Hedging, Fair Value Table (Details) Sheet http://www.ielp.com/role/FinancialInstrumentsDerivativesNotDesignatedasHedgingFairValueTableDetails Financial Instruments Derivatives Not Designated as Hedging, Fair Value Table (Details) Details 64 false false R65.htm 2423411 - Disclosure - Financial Instruments Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) Sheet http://www.ielp.com/role/FinancialInstrumentsGainLossRecognizedonDerivativesNotDesignatedasHedgingTableDetails Financial Instruments Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) Details http://www.ielp.com/role/FinancialInstrumentsTables 65 false false R66.htm 2424412 - Disclosure - Financial Instruments Narrative (Details) Sheet http://www.ielp.com/role/FinancialInstrumentsNarrativeDetails Financial Instruments Narrative (Details) Details 66 false false R67.htm 2427413 - Disclosure - Inventories, Net (Details) Sheet http://www.ielp.com/role/InventoriesNetDetails Inventories, Net (Details) Details http://www.ielp.com/role/InventoriesNetTables 67 false false R68.htm 2430414 - Disclosure - Property, Plant and Equipment, Net (Details) Sheet http://www.ielp.com/role/PropertyPlantandEquipmentNetDetails Property, Plant and Equipment, Net (Details) Details http://www.ielp.com/role/PropertyPlantandEquipmentNetTables 68 false false R69.htm 2434415 - Disclosure - Goodwill and Intangible Assets, Net Goodwill Table (Details) Sheet http://www.ielp.com/role/GoodwillandIntangibleAssetsNetGoodwillTableDetails Goodwill and Intangible Assets, Net Goodwill Table (Details) Details 69 false false R70.htm 2435416 - Disclosure - Goodwill and Intangible Assets, Net Definite-lived and Indefinite-lived Intangible Assets Table (Details) Sheet http://www.ielp.com/role/GoodwillandIntangibleAssetsNetDefinitelivedandIndefinitelivedIntangibleAssetsTableDetails Goodwill and Intangible Assets, Net Definite-lived and Indefinite-lived Intangible Assets Table (Details) Details 70 false false R71.htm 2436417 - Disclosure - Goodwill and Intangible Assets, Net Narrative (Details) Sheet http://www.ielp.com/role/GoodwillandIntangibleAssetsNetNarrativeDetails Goodwill and Intangible Assets, Net Narrative (Details) Details 71 false false R72.htm 2439418 - Disclosure - Leases (Details) Sheet http://www.ielp.com/role/LeasesDetails Leases (Details) Details http://www.ielp.com/role/LeasesTables 72 false false R73.htm 2440419 - Disclosure - Lease Liability Maturities (Details) Sheet http://www.ielp.com/role/LeaseLiabilityMaturitiesDetails Lease Liability Maturities (Details) Details 73 false false R74.htm 2443420 - Disclosure - Debt Debt Table (Details) Sheet http://www.ielp.com/role/DebtDebtTableDetails Debt Debt Table (Details) Details 74 false false R75.htm 2444421 - Disclosure - Debt Narrative - Holding Company Debt (Details) Sheet http://www.ielp.com/role/DebtNarrativeHoldingCompanyDebtDetails Debt Narrative - Holding Company Debt (Details) Details 75 false false R76.htm 2445422 - Disclosure - Debt Narrative - Reporting Segment Debt (Details) Sheet http://www.ielp.com/role/DebtNarrativeReportingSegmentDebtDetails Debt Narrative - Reporting Segment Debt (Details) Details 76 false false R77.htm 2446423 - Disclosure - Debt Debt Maturities (Details) Sheet http://www.ielp.com/role/DebtDebtMaturitiesDetails Debt Debt Maturities (Details) Details 77 false false R78.htm 2449424 - Disclosure - Net Income Per LP Unit (Details) Sheet http://www.ielp.com/role/NetIncomePerLPUnitDetails Net Income Per LP Unit (Details) Details http://www.ielp.com/role/NetIncomePerLPUnitTables 78 false false R79.htm 2453425 - Disclosure - Segment Reporting, Income Statements (Details) Sheet http://www.ielp.com/role/SegmentReportingIncomeStatementsDetails Segment Reporting, Income Statements (Details) Details 79 false false R80.htm 2454426 - Disclosure - Segment Reporting Disaggregation of Revenue (Details) Sheet http://www.ielp.com/role/SegmentReportingDisaggregationofRevenueDetails Segment Reporting Disaggregation of Revenue (Details) Details 80 false false R81.htm 2455427 - Disclosure - Segment Reporting, Balance Sheets (Details) Sheet http://www.ielp.com/role/SegmentReportingBalanceSheetsDetails Segment Reporting, Balance Sheets (Details) Details 81 false false R82.htm 2456428 - Disclosure - Segment and Geographic Reporting Geographic Information (Details) Sheet http://www.ielp.com/role/SegmentandGeographicReportingGeographicInformationDetails Segment and Geographic Reporting Geographic Information (Details) Details 82 false false R83.htm 2459429 - Disclosure - Discontinued Operations Income From Discontinued Operations (Details) Sheet http://www.ielp.com/role/DiscontinuedOperationsIncomeFromDiscontinuedOperationsDetails Discontinued Operations Income From Discontinued Operations (Details) Details 83 false false R84.htm 2462430 - Disclosure - Income Taxes Effective Income Tax Rate Reconciliation (Details) Sheet http://www.ielp.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationDetails Income Taxes Effective Income Tax Rate Reconciliation (Details) Details 84 false false R85.htm 2463431 - Disclosure - Income Taxes Accounting for Uncertainty in Income Taxes (Details) Sheet http://www.ielp.com/role/IncomeTaxesAccountingforUncertaintyinIncomeTaxesDetails Income Taxes Accounting for Uncertainty in Income Taxes (Details) Details 85 false false R86.htm 2464432 - Disclosure - Income Taxes Narrative (Details) Sheet http://www.ielp.com/role/IncomeTaxesNarrativeDetails Income Taxes Narrative (Details) Details 86 false false R87.htm 2467433 - Disclosure - Changes in Accumulated Other Comprehensive Loss (Details) Sheet http://www.ielp.com/role/ChangesinAccumulatedOtherComprehensiveLossDetails Changes in Accumulated Other Comprehensive Loss (Details) Details http://www.ielp.com/role/ChangesinAccumulatedOtherComprehensiveLossTables 87 false false R88.htm 2470434 - Disclosure - Other Income (Loss), Net (Details) Sheet http://www.ielp.com/role/OtherIncomeLossNetDetails Other Income (Loss), Net (Details) Details http://www.ielp.com/role/OtherIncomeLossNetTables 88 false false R89.htm 2473435 - Disclosure - Commitments and Contingencies Narrative (Details) Sheet http://www.ielp.com/role/CommitmentsandContingenciesNarrativeDetails Commitments and Contingencies Narrative (Details) Details 89 false false R90.htm 2474436 - Disclosure - Commitments and Contingencies Purchase Obligations and Operating Lease Commitment Tables (Details) Sheet http://www.ielp.com/role/CommitmentsandContingenciesPurchaseObligationsandOperatingLeaseCommitmentTablesDetails Commitments and Contingencies Purchase Obligations and Operating Lease Commitment Tables (Details) Details 90 false false R91.htm 2477437 - Disclosure - Pensions and Other Post-Retirement Benefit Plans (Details) Sheet http://www.ielp.com/role/PensionsandOtherPostRetirementBenefitPlansDetails Pensions and Other Post-Retirement Benefit Plans (Details) Details http://www.ielp.com/role/PensionsandOtherPostRetirementBenefitPlansTables 91 false false R92.htm 2480438 - Disclosure - Supplemental Cash Flow Information (Details) Sheet http://www.ielp.com/role/SupplementalCashFlowInformationDetails Supplemental Cash Flow Information (Details) Details http://www.ielp.com/role/SupplementalCashFlowInformationTables 92 false false R93.htm 2482439 - Disclosure - Subsequent Events (Details) Sheet http://www.ielp.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://www.ielp.com/role/SubsequentEvents 93 false false R94.htm 2485440 - Disclosure - Quarterly Financial Data (Unaudited) (Details) Sheet http://www.ielp.com/role/QuarterlyFinancialDataUnauditedDetails Quarterly Financial Data (Unaudited) (Details) Details http://www.ielp.com/role/QuarterlyFinancialDataUnauditedTables 94 false false R95.htm 2488441 - Disclosure - Schedule I Condensed Financial Information of Parent - Balance Sheet (Details) Sheet http://www.ielp.com/role/ScheduleICondensedFinancialInformationofParentBalanceSheetDetails Schedule I Condensed Financial Information of Parent - Balance Sheet (Details) Details 95 false false R96.htm 2489442 - Disclosure - Schedule I (Parentheticals) (Details) Sheet http://www.ielp.com/role/ScheduleIParentheticalsDetails Schedule I (Parentheticals) (Details) Details http://www.ielp.com/role/ScheduleITables 96 false false R97.htm 2490443 - Disclosure - Schedule I Condensed Financial Information of Parent - Statements of Operations (Details) Sheet http://www.ielp.com/role/ScheduleICondensedFinancialInformationofParentStatementsofOperationsDetails Schedule I Condensed Financial Information of Parent - Statements of Operations (Details) Details 97 false false R98.htm 2491444 - Disclosure - Schedule I Condensed Financial Information of Parent - Statements of Cash Flows (Details) Sheet http://www.ielp.com/role/ScheduleICondensedFinancialInformationofParentStatementsofCashFlowsDetails Schedule I Condensed Financial Information of Parent - Statements of Cash Flows (Details) Details 98 false false R99.htm 2492445 - Disclosure - Schedule I Condensed Financial Information of Parent - Footnote (Details) Sheet http://www.ielp.com/role/ScheduleICondensedFinancialInformationofParentFootnoteDetails Schedule I Condensed Financial Information of Parent - Footnote (Details) Details 99 false false All Reports Book All Reports iep-20191231.htm ex211123119.htm ex231123119.htm ex232123119.htm ex233123119.htm ex234123119.htm ex235123119.htm ex236123119.htm ex237123119.htm ex238123119.htm ex239123119.htm ex311123119.htm ex312123119.htm ex321123119.htm ex41123119.htm iep-20191231.xsd iep-20191231_cal.xml iep-20191231_def.xml iep-20191231_lab.xml iep-20191231_pre.xml http://xbrl.sec.gov/dei/2019-01-31 http://fasb.org/srt/2019-01-31 http://xbrl.sec.gov/sic/2011-01-31 http://xbrl.sec.gov/invest/2013-01-31 http://fasb.org/us-gaap/2019-01-31 http://xbrl.sec.gov/stpr/2018-01-31 http://xbrl.sec.gov/country/2017-01-31 true true