Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Significant Accounting Policies [Line Items]      
Investment Income, Dividend $ 0    
Intangible Assets, Net (Excluding Goodwill) 681   728
Amortization of Intangible Assets 24 24  
Goodwill 611   656
KDAC      
Significant Accounting Policies [Line Items]      
Investment Income, Dividend   10  
GM      
Significant Accounting Policies [Line Items]      
Accounts and Other Receivables 361   301
VW      
Significant Accounting Policies [Line Items]      
Accounts and Other Receivables $ 218   $ 187
Customer Concentration Risk | Total Net Sales | GM & VW      
Significant Accounting Policies [Line Items]      
Percentage of Total Net Sales 22.00% 25.00%  
Customer Concentration Risk | Total Net Sales | GM      
Significant Accounting Policies [Line Items]      
Percentage of Total Net Sales 14.00% 16.00%  
Customer Concentration Risk | Total Net Sales | VW      
Significant Accounting Policies [Line Items]      
Percentage of Total Net Sales 8.00% 9.00%