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Ownership Percentages and Carrying Value Principal Equity Method Investments (Parenthetical) (Detail) € in Millions, $ in Millions | Dec. 22, 2020 USD ($) | Dec. 22, 2020 EUR (€) | Dec. 31, 2020
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Getrag (Jiangxi) Transmission Co., Ltd [GJT] [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Cash Acquired in Business Acquisition | $ 160 | € 140 |
Getrag (Jiangxi) Transmission Co., Ltd [GJT] [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage |  |  | 66.70%
Getrag Asia Pacific GmbH & Co. KG [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership Percentage by GFT |  |  | 50.00%

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- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
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