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Note 1. Significant Accounting Policies (Policies) | 3 Months Ended
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Dec. 31, 2017
Variable Interest Entity [Line Items] |
Variable Interest Entity Disclosure [Text Block] | Consolidated VIEs Based upon the criteria set forth in the Financial Accounting Standards Board (the FASB) Accounting Standards Codification (ASC) 810, "Consolidation," Adient has determined that it was the primary beneficiary in two variable interest entities (VIEs) for the reporting periods ended December 31, 2017 and 2016, as Adient absorbs significant economics of the entities and has the power to direct the activities that are considered most significant to the entities. The two VIEs manufacture seating products in North America for the automotive industry. Adient funds the entities' short-term liquidity needs through revolving credit facilities and has the power to direct the activities that are considered most significant to the entities through its key customer supply relationships.
Basis of Presentation and Significant Accounting Policies [Text Block] | Basis of Presentation The accompanying consolidated financial statements are presented on a consolidated basis and include all of the accounts and operations of Adient and its consolidated subsidiaries. Intercompany accounts and transactions have been eliminated. The consolidated financial statements reflect all adjustments, which are normal and recurring in nature, necessary for fair financial statement presentation. The preparation of these consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in these consolidated financial statements and accompanying notes. Actual results could differ materially from those estimates. The interim consolidated financial statements and accompanying notes are unaudited and should be read in conjunction with Adient’s annual consolidated financial statements and the notes thereto included in its Annual Report on Form 10-K for the fiscal year ended September 30, 2017.

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- Definition The entire disclosure for the basis of presentation and significant accounting policies concepts. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). Accounting policies describe all significant accounting policies of the reporting entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- Definition The entire disclosure for a variable interest entity (VIE), including but not limited to, judgments and assumptions in determining whether to consolidate and in identifying the primary beneficiary, gain (loss) recognized on the initial consolidation of the VIE, terms of arrangements, amounts and classification of the VIE's assets and liabilities, and the entity's maximum exposure to loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -URI http://asc.fasb.org/topic&trid=2197479 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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