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Investments and Related Matters (Tables) (Other Segments [Member]) | 12 Months Ended
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Dec. 31, 2014
Other Segments [Member] |
Investment and Related Matters [Line Items] |
Investment | The carrying value of investments held by our Automotive, Energy, Railcar and Gaming segments and the Holding Company consist of the following:
| December 31,
| 2014 |  | 2013
| (in millions)
Equity method investments | $ | 298 |  |  | $ | 284 |
Other investments | 241 |  |  | 151 |
| $ | 539 |  |  | $ | 435 |

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- Definition A table of investments, shown as a text block. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 6 -Section 10 -Paragraph (c) -Subparagraph (1) + Details
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