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Segmented Information - Additional Information (Detail)	12 Months Ended	24 Months Ended
	Dec. 31, 2013 Center Operations Markets Employee Country	Aug. 31, 2012 E-Car [Member]
Segment Reporting Information [Line Items]
Number of manufacturing operations	316
Number of product development, engineering and sales centres	84
Number of Countries in which Entity Operates	29
Number of employees	125,000
Number of primary markets	2
Interest acquired in E-Car partnership		27.00%
Percentage of non-controlling interest in an equity accounted investment		73.00%

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Number of persons employed by the Entity

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Business Acquisition Percentage Of Interest Acquired

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Number of manufacturing operations.

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Number of primary markets in which entity operates.

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Number of product development engineering and sales centres.

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Percentage of noncontrolling interest in equity accounted investment.

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The number of countries in which the entity operates as of balance sheet date.

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