Investments - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 31, 2018 USD ($) Business-Combination	Dec. 31, 2017 USD ($)
Schedule of Equity Method Investments [Line Items]
Sales to equity method investees	$ 379	$ 284
Getrag Group Of Companies [Member]
Schedule of Equity Method Investments [Line Items]
Number of investees, determined as variable interest entities \| Business-Combination	2
Variable interest entities, maximum exposure to any potential losses	$ 101	$ 137

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=108788376&loc=d3e5747-111685

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=108788376&loc=d3e5728-111685

Name:	us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant