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Stock-Based Compensation - Stock Appreciation Rights (Details) - Stock appreciation rights (SARs) $ / shares in Units, $ in Millions | 12 Months Ended
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Sep. 30, 2020 USD ($) $ / shares shares
Weighted Average SAR Price |
Shares outstanding, weighted average exercise price at beginning period (in dollars per share) | $ / shares | $ 30.24
Shares exercised, weighted average exercise price (in dollars per share) | $ / shares | 26.85
Shares forfeited or expired, weighted average exercise price (in dollars per share) | $ / shares | 25.12
Shares outstanding, weighted average exercise price at ending period (in dollars per share) | $ / shares | 32.78
Shares exercisable, weighted average exercise price (in dollars per share) | $ / shares | $ 32.78
Shares Subject to SAR |
Shares outstanding at beginning of period (In shares) | shares | 171,100
Shares exercised (in shares) | shares | (105,377)
Shares forfeited or expired (In shares) | shares | (14,987)
Shares outstanding at ending of period (In shares) | shares | 291,464
Shares exercisable (in shares) | shares | 171,100
Weighted Average Remaining Contractual Life (years) |
Shares outstanding, weighted average remaining contractual life | 2 years 4 months 24 days
Shares exercisable, weighted average remaining contractual life | 2 years 4 months 24 days
Aggregate Intrinsic Value (in millions) |
Shares outstanding, aggregate intrinsic value | $ | $ 2
Shares exercisable, aggregate intrinsic value | $ | $ 2
Former Parent plan |
Weighted Average SAR Price |
Shares exercisable, weighted average exercise price (in dollars per share) | $ / shares | $ 32.48
Shares Subject to SAR |
Shares exercisable (in shares) | shares | 154,857
Weighted Average Remaining Contractual Life (years) |
Shares exercisable, weighted average remaining contractual life | 2 years 4 months 24 days
Aggregate Intrinsic Value (in millions) |
Shares exercisable, aggregate intrinsic value | $ | $ 2
Adient plan |
Weighted Average SAR Price |
Shares exercisable, weighted average exercise price (in dollars per share) | $ / shares | $ 35.72
Shares Subject to SAR |
Shares exercisable (in shares) | shares | 16,243
Weighted Average Remaining Contractual Life (years) |
Shares exercisable, weighted average remaining contractual life | 2 years 4 months 24 days
Aggregate Intrinsic Value (in millions) |
Shares exercisable, aggregate intrinsic value | $ | $ 0

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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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