XML 34 R22.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Changes in Accumulated Other Comprehensive Loss | 12 Months Ended
--- | ---
Dec. 31, 2018
Changes in Accumulated Other Comprehensive Loss [Abstract] |
Accumulated Other Comprehensive Income (Loss) [Text Block] | Changes in Accumulated Other Comprehensive Loss. Changes in accumulated other comprehensive loss consists of the following:
| Post-Retirement Benefits, Net of Tax |  | Hedge Instruments, Net of Tax |  | Translation Adjustments and Other, Net of Tax |  | Total
| (in millions)
Balance, December 31, 2017 | $ | (572 | ) |  | $ | (15 | ) |  | $ | (797 | ) |  | $ | (1,384 | )
Other comprehensive income (loss) before reclassifications, net of tax | 1 |  |  | (3 | ) |  | (86 | ) |  | (88 | )
Reclassifications from accumulated other comprehensive income to earnings | 20 |  |  | — |  |  | — |  |  | 20 |
Other comprehensive income (loss), net of tax | 21 |  |  | (3 | ) |  | (86 | ) |  | (68 | )
Dispositions of consolidated subsidiaries | 504 |  |  | 18 |  |  | 846 |  |  | 1,368 |
Balance, December 31, 2018 | $ | (47 | ) |  | $ | — |  |  | $ | (37 | ) |  | $ | (84 | )
Dispositions of consolidated subsidiaries in the table above is included in changes in subsidiary equity and other in the consolidated statement of changes in equity.

X
- Definition Accumulated Other Comprehensive Income (Loss) [Text Block] + References No definition available. + Details
Name: | iep_AccumulatedOtherComprehensiveIncomeLossTextBlock
Namespace Prefix: | iep_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Changes in Accumulated Other Comprehensive Loss [Abstract] + References No definition available. + Details
Name: | iep_ChangesinAccumulatedOtherComprehensiveLossAbstract
Namespace Prefix: | iep_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration