v3.26.1
Organization and Summary of Significant Accounting Policies - Schedule of Computation of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Income available to shareholders        
Net income (loss) attributable to Adient $ 25 $ 36 $ 30 $ (299)
Weighted average shares outstanding        
Basic weighted average shares outstanding (in shares) 78.1 83.5 78.4 83.9
Effect of dilutive securities:        
Stock options, unvested restricted stock and unvested performance share awards (in shares) 1.1 0.2 0.9 0.0
Diluted weight average shares outstanding (in shares) 79.2 83.7 79.3 83.9
Earnings (loss) per share:        
Basic (in usd per share) $ 0.32 $ 0.43 $ 0.38 $ (3.56)
Diluted (in usd per share) $ 0.32 $ 0.43 $ 0.38 $ (3.56)