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Equity In Net Assets Of Nonconsolidated Affiliates Transactions with NCAs (Details) - Nonconsolidated Affiliates [Member] - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Related Party Transaction [Line Items]          
Automotive sales and revenue $ 416 $ 659 $ 1,292 $ 2,211  
Automotive purchases, net 31 64 94 287  
Dividends received 315 $ 506 1,742 1,793  
Operating cash flows     2,839 $ 3,767  
Accounts and notes receivable, net 995   995   $ 706
Accounts payable 189   189   205
Undistributed earnings including dividends declared but not received $ 1,848   $ 1,848   $ 2,011