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Segmented Information - Summary of External Revenues by Automotive Products and Services (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting Information [Line Items]      
Revenue from external customers $ 34,835 $ 30,837 $ 28,748
Exterior And Interior Systems [Member]
      
Segment Reporting Information [Line Items]      
Revenue from external customers 12,308 11,673 11,020
Body Systems And Chassis Systems [Member]
      
Segment Reporting Information [Line Items]      
Revenue from external customers 7,874 7,123 6,056
Powertrain Systems [Member]
      
Segment Reporting Information [Line Items]      
Revenue from external customers 4,634 3,825 3,667
Complete Vehicle Assembly [Member]
      
Segment Reporting Information [Line Items]      
Revenue from external customers 3,062 2,561 2,690
Tooling, engineering and other [Member]
      
Segment Reporting Information [Line Items]      
Revenue from external customers 2,823 2,317 2,065
Vision And Electronic Systems [Member]
      
Segment Reporting Information [Line Items]      
Revenue from external customers 2,193 2,132 2,066
Closure Systems [Member]
      
Segment Reporting Information [Line Items]      
Revenue from external customers $ 1,941 $ 1,206 $ 1,184