Overview - Additional Information (Detail)	6 Months Ended	12 Months Ended
Jun. 30, 2014 Brand Product Vehicle Customer	Dec. 31, 2013 Revenues North America
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Transmission product lines	13
Concentration of risk, percentage		77.00%
Worldwide independent distributor and dealer locations	1,400
Product models	100
Vehicle configurations	2,500
Combinations of engine brands, models and ratings	500
Year of introduction of Company's automatic products	60 years

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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