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Investments and Related Matters (Tables) (Other Segments [Member])
12 Months Ended
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