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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Schedule of Fair Value Measurements, Nonrecurring | Assets measured at fair value on a nonrecurring basis during the years ended December 31, 2014 and 2013 are set forth in the table below:
|  | December 31, 2014 |  | December 31, 2013
|  | Level 3 |  | Recognized |  | Level 3 |  | Recognized
Category |  | Asset |  | Loss |  | Asset |  | Loss
|  | (in millions)
Property, plant and equipment |  | $ | 53 |  |  | $ | 27 |  |  | $ | 74 |  |  | $ | 16 |
Equity method investments |  | 10 |  |  | 5 |  |  | — |  |  | — |
Goodwill |  | 827 |  |  | 103 |  |  | — |  |  | — |
Investment Segment [Member] |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | Investment The following table summarizes the valuation of the Investment Funds' investments and derivative contracts by the above fair value hierarchy levels as of December 31, 2014 and 2013:
| December 31, 2014 |  | December 31, 2013
| Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets | (in millions)
Investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Communications | $ | 2,846 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,846 |  |  | $ | 820 |  |  | $ | — |  |  | $ | — |  |  | $ | 820 |
Consumer, non-cyclical | 2,308 |  |  | — |  |  | — |  |  | 2,308 |  |  | 3,344 |  |  | 178 |  |  | — |  |  | 3,522 |
Consumer, cyclical | 436 |  |  | — |  |  | — |  |  | 436 |  |  | 414 |  |  | — |  |  | — |  |  | 414 |
Diversified | 23 |  |  | — |  |  | — |  |  | 23 |  |  | 29 |  |  | — |  |  | — |  |  | 29 |
Energy | 1,895 |  |  | — |  |  | — |  |  | 1,895 |  |  | 3,050 |  |  | — |  |  | — |  |  | 3,050 |
Financial | 417 |  |  | — |  |  | — |  |  | 417 |  |  | 300 |  |  | — |  |  | — |  |  | 300 |
Funds | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 6 |  |  | — |  |  | 6 |
Industrial | 79 |  |  | 20 |  |  | — |  |  | 99 |  |  | — |  |  | — |  |  | — |  |  | — |
Technology | 5,635 |  |  | — |  |  | — |  |  | 5,635 |  |  | 3,173 |  |  | — |  |  | — |  |  | 3,173 |
| 13,639 |  |  | 20 |  |  | — |  |  | 13,659 |  |  | 11,130 |  |  | 184 |  |  | — |  |  | 11,314 |
Corporate debt: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consumer, cyclical | — |  |  | — |  |  | 75 |  |  | 75 |  |  | — |  |  | — |  |  | 287 |  |  | 287 |
Energy | — |  |  | 19 |  |  | — |  |  | 19 |  |  | — |  |  | — |  |  | — |  |  | — |
Financial | — |  |  | 7 |  |  | — |  |  | 7 |  |  | — |  |  | 11 |  |  | — |  |  | 11 |
Sovereign debt | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 5 |  |  | — |  |  | 5 |
Utilities | — |  |  | 28 |  |  | — |  |  | 28 |  |  | — |  |  | 29 |  |  | — |  |  | 29 |
| — |  |  | 54 |  |  | 75 |  |  | 129 |  |  | — |  |  | 45 |  |  | 287 |  |  | 332 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial | — |  |  | 173 |  |  | — |  |  | 173 |  |  | — |  |  | 180 |  |  | — |  |  | 180 |
| 13,639 |  |  | 247 |  |  | 75 |  |  | 13,961 |  |  | 11,130 |  |  | 409 |  |  | 287 |  |  | 11,826 |
Derivative contracts, at fair value(1) | — |  |  | 3 |  |  | — |  |  | 3 |  |  | — |  |  | — |  |  | — |  |  | — |
| $ | 13,639 |  |  | $ | 250 |  |  | $ | 75 |  |  | $ | 13,964 |  |  | $ | 11,130 |  |  | $ | 409 |  |  | $ | 287 |  |  | $ | 11,826 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities sold, not yet purchased, at fair value: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consumer, non-cyclical | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 44 |  |  | $ | — |  |  | $ | — |  |  | $ | 44 |
Consumer, cyclical | 334 |  |  | — |  |  | — |  |  | 334 |  |  | 787 |  |  | — |  |  | — |  |  | 787 |
Financial | — |  |  | — |  |  | — |  |  | — |  |  | 45 |  |  | — |  |  | — |  |  | 45 |
Funds | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 8 |  |  | — |  |  | 8 |
| 334 |  |  | — |  |  | — |  |  | 334 |  |  | 876 |  |  | 8 |  |  | — |  |  | 884 |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Energy | — |  |  | 3 |  |  | — |  |  | 3 |  |  | — |  |  | — |  |  | — |  |  | — |
| 334 |  |  | 3 |  |  | — |  |  | 337 |  |  | 876 |  |  | 8 |  |  | — |  |  | 884 |
Derivative contracts, at fair value(2) | — |  |  | 614 |  |  | — |  |  | 614 |  |  | — |  |  | 639 |  |  | — |  |  | 639 |
| $ | 334 |  |  | $ | 617 |  |  | $ | — |  |  | $ | 951 |  |  | $ | 876 |  |  | $ | 647 |  |  | $ | — |  |  | $ | 1,523 |
(1) | Included in other assets in our consolidated balance sheets.
(2) | Included in accrued expenses and other liabilities in our consolidated balance sheets.
Schedule of investments measured at fair value with Level 3 Input | The changes in investments measured at fair value for which our Investment segment has used Level 3 input to determine fair value are as follows:
| Year Ended December 31,
| 2014 |  | 2013
| (in millions)
Balance at January 1 | $ | 287 |  |  | $ | 288 |
Gross realized and unrealized (losses) gains | (100 | ) |  | 4 |
Gross proceeds | (2 | ) |  | (5 | )
Distribution-in-kind | (110 | ) |  | — |
Balance at December 31 | $ | 75 |  |  | $ | 287 |
Other Segments and Holding Company [Member] |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | Other Segments and Holding Company The following table summarizes the valuation of our Automotive and Energy segments and our Holding Company investments and derivative contracts by the above fair value hierarchy levels as of December 31, 2014 and 2013:
| December 31, 2014 |  | December 31, 2013
| Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets | (in millions)
Marketable equity and debt securities | $ | 75 |  |  | $ | 3 |  |  | $ | 75 |  |  | $ | 153 |  |  | $ | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | 1 |
Trading securities | — |  |  | — |  |  | 55 |  |  | 55 |  |  | — |  |  | — |  |  | 116 |  |  | 116 |
Derivative contracts, at fair value(1) | — |  |  | 47 |  |  | — |  |  | 47 |  |  | — |  |  | 1 |  |  | — |  |  | 1 |
| $ | 75 |  |  | $ | 50 |  |  | $ | 130 |  |  | $ | 255 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 116 |  |  | $ | 118 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other liabilities | $ | — |  |  | $ | 50 |  |  | $ | — |  |  | $ | 50 |  |  | $ | — |  |  | $ | 16 |  |  | $ | — |  |  | $ | 16 |
Derivative contracts, at fair value(2) | — |  |  | 2 |  |  | — |  |  | 2 |  |  | — |  |  | 35 |  |  | — |  |  | 35 |
| $ | — |  |  | $ | 52 |  |  | $ | — |  |  | $ | 52 |  |  | $ | — |  |  | $ | 51 |  |  | $ | — |  |  | $ | 51 |
(1) | Amounts are classified within other assets in our consolidated balance sheets.
(2) | Amounts are classified within accrued expenses and other liabilities in our consolidated balance sheets.
Holding Company [Member] |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Schedule of investments measured at fair value with Level 3 Input | The changes in trading securities measured at fair value for which our Holding Company have used Level 3 input to determine fair value are as follows:
| Year Ended December 31,
| 2014 |  | 2013
| (in millions)
Balance at January 1 | $ | 116 |  |  | $ | 81 |
Purchases | — |  |  | 67 |
Distribution-in-kind | 110 |  |  | — |
Gross realized and unrealized losses | (96 | ) |  | (32 | )
Balance at December 31 | $ | 130 |  |  | $ | 116 |
Automotive Segment [Member] |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Schedule of fair value of defined benefit plan asset [Table Text Block] | The following table presents our Automotive segment's defined benefit plan assets measured at fair value on a recurring basis as of December 31, 2014 and 2013:
| December 31, 2014 |  | December 31, 2013
| Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
| (in millions)
U.S. Plans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash | $ | 44 |  |  | $ | — |  |  | $ | — |  |  | $ | 44 |  |  | $ | 33 |  |  | $ | — |  |  | $ | — |  |  | $ | 33 |
Investments with registered investment companies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities | 314 |  |  | — |  |  | — |  |  | 314 |  |  | 347 |  |  | — |  |  | — |  |  | 347 |
Fixed income securities | 166 |  |  | — |  |  | — |  |  | 166 |  |  | 135 |  |  | — |  |  | — |  |  | 135 |
Real estate and other | 25 |  |  | — |  |  | — |  |  | 25 |  |  | 23 |  |  | — |  |  | — |  |  | 23 |
Equity securities | 231 |  |  | — |  |  | — |  |  | 231 |  |  | 242 |  |  | — |  |  | — |  |  | 242 |
Fixed income collective trust | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate and other | — |  |  | 21 |  |  | — |  |  | 21 |  |  | — |  |  | 22 |  |  | — |  |  | 22 |
Government | 16 |  |  | 4 |  |  | — |  |  | 20 |  |  | 14 |  |  | 8 |  |  | — |  |  | 22 |
Hedge funds | — |  |  | — |  |  | 91 |  |  | 91 |  |  | — |  |  | — |  |  | 85 |  |  | 85 |
| $ | 796 |  |  | $ | 25 |  |  | $ | 91 |  |  | $ | 912 |  |  | $ | 794 |  |  | $ | 30 |  |  | $ | 85 |  |  | $ | 909 |
Non-U.S. Plans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Insurance contracts | $ | — |  |  | $ | — |  |  | $ | 41 |  |  | $ | 41 |  |  | $ | — |  |  | $ | — |  |  | $ | 44 |  |  | $ | 44 |
Investments with registered investment companies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed income securities | 10 |  |  | — |  |  | — |  |  | 10 |  |  | 7 |  |  | — |  |  | — |  |  | 7 |
Equity securities | 1 |  |  | — |  |  | — |  |  | 1 |  |  | 2 |  |  | — |  |  | — |  |  | 2 |
Corporate bonds | — |  |  | 2 |  |  | — |  |  | 2 |  |  | — |  |  | 2 |  |  | — |  |  | 2 |
| $ | 11 |  |  | $ | 2 |  |  | $ | 41 |  |  | $ | 54 |  |  | $ | 9 |  |  | $ | 2 |  |  | $ | 44 |  |  | $ | 55 |
Schedule of Level Three Defined Benefit Plan Assets Roll Forward [Table Text Block] | The changes in U.S. and Non-U.S. plan assets measured at fair value for which our Automotive segment has used Level 3 input to determine fair value are as follows:
| Year Ended December 31,
| 2014 |  | 2013
| (in millions)
U.S. Plans: |  |  |
Hedge funds: |  |  |
Balance at January 1 | $ | 85 |  |  | $ | 14 |
Realized/unrealized gains (losses), net | 6 |  |  | 11 |
Purchases and settlements, net | 47 |  |  | 83 |
Sales, net | (47 | ) |  | (23 | )
Balance at December 31 | $ | 91 |  |  | $ | 85 |
| Year Ended December 31,
| 2014 |  | 2013
| (in millions)
Non-U.S. Plans: |  |  |
Insurance contracts: |  |  |
Balance at January 1 | $ | 44 |  |  | $ | 42 |
Realized and unrealized gains, net | 2 |  |  | 1 |
Purchases and settlements, net | 6 |  |  | 6 |
Proceeds | (5 | ) |  | (6 | )
Foreign currency exchange rate movements | (6 | ) |  | 1 |
Balance at December 31 | $ | 41 |  |  | $ | 44 |
Railcar and Food Packaging [Member] |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Schedule of fair value of defined benefit plan asset [Table Text Block] | The following table presents our Food Packaging and Railcar segment's defined benefit plan assets measured at fair value on a recurring basis as of December 31, 2014 and 2013:
| December 31, 2014 |  | December 31, 2013
| Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
| (in millions)
U.S. and Non-U.S. Plans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset category: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents | $ | 5 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 6 |  |  | $ | 4 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 5 |
Equity securities | 55 |  |  | 28 |  |  | — |  |  | 83 |  |  | 66 |  |  | 15 |  |  | — |  |  | 81 |
Fixed income securities | 22 |  |  | 1 |  |  | — |  |  | 23 |  |  | 21 |  |  | 1 |  |  | — |  |  | 22 |
Other | 6 |  |  | — |  |  | 21 |  |  | 27 |  |  | 6 |  |  | — |  |  | 21 |  |  | 27 |
| $ | 88 |  |  | $ | 30 |  |  | $ | 21 |  |  | $ | 139 |  |  | $ | 97 |  |  | $ | 17 |  |  | $ | 21 |  |  | $ | 135 |
Schedule of Level Three Defined Benefit Plan Assets Roll Forward [Table Text Block] | The changes in U.S. and Non-U.S. plan assets measured at fair value for which our Food Packaging and Railcar segments have used Level 3 input to determine fair value are as follows:
| Year Ended December 31,
| 2014 |  | 2013
| (in millions)
U.S. and Non-U.S. Plans: |  |  |
Balance at January 1 | $ | 21 |  |  | $ | 30 |
Realized and unrealized gains, net | 1 |  |  | 3 |
Purchases and settlements, net | (1 | ) |  | (12 | )
Balance at December 31 | $ | 21 |  |  | $ | 21 |

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