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Segmented Information - Summary of External Revenues by Automotive Products and Services (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |
Sales | $ 38,946 | $ 36,445
Body Systems and Chassis Systems [Member] |  |
Segment Reporting Information [Line Items] |  |
Sales | 9,744 | 9,157
Powertrain Systems [Member] |  |
Segment Reporting Information [Line Items] |  |
Sales | 6,773 | 6,489
Exterior Systems [Member] |  |
Segment Reporting Information [Line Items] |  |
Sales | 5,325 | 5,272
Seating Systems [Member] |  |
Segment Reporting Information [Line Items] |  |
Sales | 5,203 | 5,079
Tooling, Engineering and Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Sales | 3,397 | 3,078
Complete Vehicle Assembly [Member] |  |
Segment Reporting Information [Line Items] |  |
Sales | 2,944 | 2,190
Vision and Electronic Systems [Member] |  |
Segment Reporting Information [Line Items] |  |
Sales | 2,891 | 2,768
Closure Systems [Member] |  |
Segment Reporting Information [Line Items] |  |
Sales | $ 2,669 | $ 2,412

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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + 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(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Details
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- Details
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- Details
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