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Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Mr. Icahn and affiliates | Investment in funds |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Amount of transaction with related party |  |  | $ 280 | $ 600 |
Related party transaction, balance | $ 4,800 |  | $ 4,800 |  | $ 4,400
Percentage fair value of investments in Funds that is attributable to Mr. Icahn | 62.00% |  | 62.00% |  | 59.00%
Consolidated VIE | Expense sharing arrangement |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Amount of transaction with related party | $ 4 | $ 2 | $ 6 | 7 |
Hertz (equity method investee) | Receipts and revenue from related party |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Amount of transaction with related party | 11 | 5 | 29 | 10 |
ACF | Payments to and purchases from related party |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Amount of transaction with related party | 1 | 1 | 2 | 4 |
ACF | Railcar component sales |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Amount of transaction with related party | 3 |  | 3 |  |
Insight Portfolio Group LLC | Buying group operating expenses |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Amount of transaction with related party |  |  | 2 | 2 |
Vehicles leased | Hertz (equity method investee) | Payments to and purchases from related party |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Amount of transaction with related party | 0 | $ 2 | 1 | $ 2 |
Investments | Hertz (equity method investee) | Payments to and purchases from related party |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Amount of transaction with related party |  |  | 36 |  |
767 Leasing | Automotive Segment |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Assets at non-consolidated VIE | 25 |  | 25 |  |
Liabilities at non-consolidated VIE | 1 |  | 1 |  |
investment in nonconsolidated VIE | 15 |  | 25 |  |
investment in related parties | $ 24 |  | $ 24 |  |

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- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 + Details
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