XML 83 R69.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Goodwill and Intangible Assets, Net Goodwill Table (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Goodwill [Line Items] |  |  |
Gross carrying amount of goodwill | $ 2,612 | $ 2,403 | $ 2,329
Goodwill arising from acquisitions | 209 | 80 |
Foreign exchange adjustments to goodwill | 0 | (6) |
Accumulated impairment of goodwill | (1,476) | (899) | (328)
Impairment of goodwill | (577) | (571) |
Net carrying value of goodwill | 1,136 | 1,504 |
Automotive Segment |  |  |
Goodwill [Line Items] |  |  |
Gross carrying amount of goodwill | 1,662 | 1,457 | 1,389
Goodwill arising from acquisitions | 205 | 74 |
Foreign exchange adjustments to goodwill | 0 | (6) |
Accumulated impairment of goodwill | (537) | (537) | (225)
Impairment of goodwill | 0 | (312) |
Net carrying value of goodwill | 1,125 | 920 |
Energy Segment |  |  |
Goodwill [Line Items] |  |  |
Gross carrying amount of goodwill | 930 | 930 | 930
Goodwill arising from acquisitions | 0 | 0 |
Foreign exchange adjustments to goodwill | 0 | 0 |
Accumulated impairment of goodwill | (930) | (356) | (103)
Impairment of goodwill | (574) | (253) |
Net carrying value of goodwill | 0 | 574 |
Railcar Segment |  |  |
Goodwill [Line Items] |  |  |
Gross carrying amount of goodwill | 7 | 7 | 7
Goodwill arising from acquisitions | 0 | 0 |
Foreign exchange adjustments to goodwill | 0 | 0 |
Accumulated impairment of goodwill | 0 | 0 | 0
Impairment of goodwill | 0 | 0 |
Net carrying value of goodwill | 7 | 7 |
Gaming Segment |  |  |
Goodwill [Line Items] |  |  |
Gross carrying amount of goodwill | 3 | 0 |
Goodwill arising from acquisitions | 3 |  |
Foreign exchange adjustments to goodwill | 0 |  |
Accumulated impairment of goodwill | (3) | 0 |
Impairment of goodwill | (3) |  |
Net carrying value of goodwill | 0 |  |
Mining Segment |  |  |
Goodwill [Line Items] |  |  |
Gross carrying amount of goodwill | 6 | 6 | 0
Goodwill arising from acquisitions | 0 | 6 |
Foreign exchange adjustments to goodwill | 0 | 0 |
Accumulated impairment of goodwill | (6) | (6) | 0
Impairment of goodwill | 0 | (6) |
Net carrying value of goodwill | 0 | 0 |
Food Packaging Segment |  |  |
Goodwill [Line Items] |  |  |
Gross carrying amount of goodwill | 4 | 3 | 3
Goodwill arising from acquisitions | 1 | 0 |
Foreign exchange adjustments to goodwill | 0 | 0 |
Accumulated impairment of goodwill | 0 | 0 | $ 0
Impairment of goodwill | 0 | 0 |
Net carrying value of goodwill | $ 4 | $ 3 |

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillForeignCurrencyTranslationGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_GoodwillLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=iep_AutomotiveSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=iep_EnergySegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=iep_RailcarSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=iep_GamingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=iep_MiningsegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=iep_FoodPackagingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |