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Financial Statements - Additional Information (Detail) $ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2012 InterestInvestment Entity | Jun. 30, 2017 USD ($) Entity | Dec. 31, 2016 Entity | Oct. 31, 2016 shares | Sep. 30, 2016 USD ($) Entity
Financial Statement Details [Line Items] |  |  |  |  |
Adient shares received per 10 shares of Johnson Controls shares | shares |  |  |  | 1 |
Johnson Controls shares converted into one share of Adient | shares |  |  |  | 10 |
Interest percentage minimum for investments in partially-owned affiliates to be accounted for by the equity method |  | 20.00% |  |  |
Number of VIEs where Company is Primary Beneficiary | Entity |  | 1 |  |  | 3
Number of separate investments a pre-existing VIE was reorganized into | Entity | 3 |  |  |  |
Additional interests acquired | InterestInvestment | 2 |  |  |  |
Third party debt agreement |  | $ 166 |  |  |
Loans to partially-owned affiliates |  | 37 |  |  |
Floor guarantee |  | 25 |  |  |
Number of VIEs in which Company was not primary beneficiary | Entity | 2 |  |  |  |
Restricted Cash and Cash Equivalents |  | 37 |  |  | $ 88
Restricted Cash and Investments, Current |  | 28 |  |  | 79
Restricted Cash and Cash Equivalents, Noncurrent |  | 9 |  |  | 9
Variable Interest Entity, Not Primary Beneficiary [Member] |  |  |  |  |
Financial Statement Details [Line Items] |  |  |  |  |
Investment balance of the Company's nonconsolidated VIEs |  | $ 63 |  |  | 59
Power Solutions |  |  |  |  |
Financial Statement Details [Line Items] |  |  |  |  |
Number of VIEs where Company is Primary Beneficiary | Entity |  | 1 |  |  |
North America [Member] | Adient spin-off [Member] |  |  |  |  |
Financial Statement Details [Line Items] |  |  |  |  |
Number of VIEs where Company is Primary Beneficiary | Entity |  |  | 2 |  |
Noncurrent assets held for sale [Domain] |  |  |  |  |
Financial Statement Details [Line Items] |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  | 44
Noncurrent liabilities held for sale [Domain] |  |  |  |  |
Financial Statement Details [Line Items] |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  | 44
Other Noncurrent Assets |  |  |  |  |
Financial Statement Details [Line Items] |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  | 30
Long-term Debt |  |  |  |  |
Financial Statement Details [Line Items] |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  | $ 30

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