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Segmented Information - Summary of External Revenues by Automotive Products and Services (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenue from external customers	$ 32,134	$ 34,403
Body Systems and Chassis Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	7,790	8,078
Exterior Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	5,155	5,435
Powertrain Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	4,755	5,083
Seating Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	4,497	4,969
Tooling, Engineering and Other [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	2,700	2,755
Vision and Electronic Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	2,583	2,518
Complete Vehicle Assembly [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	2,357	3,160
Closure Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	$ 2,297	$ 2,405

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

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+ References

No definition available.

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