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Segmented Information - Summary of External Revenues by Automotive Products and Services (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenue from external customers	$ 36,445	$ 32,134
Body Systems and Chassis Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	9,157	7,790
Powertrain Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	6,489	4,755
Exterior Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	5,272	5,155
Seating Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	5,079	4,497
Tooling, Engineering and Other [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	3,078	2,700
Vision and Electronic Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	2,768	2,583
Closure Systems [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	2,412	2,297
Complete Vehicle Assembly [Member]
Segment Reporting Information [Line Items]
Revenue from external customers	$ 2,190	$ 2,357

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=63488584&loc=d3e20235-122688

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- Definition

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+ References

No definition available.

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