v3.26.1
Master Trust - Schedule of Master Trust Net Assets (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
EBP Plans | EBP, Nonconsolidated, Plan Interest in Master Trust    
Investments - Fair Value:    
Total Investments at Fair Value $ 1,119,098,403 $ 994,409,198
Investments - Contract Value:    
Total Investments at Contract Value   70,054,155
Net assets available for benefits 1,184,364,132 1,064,463,353
EBP Plans | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual Funds    
Investments - Fair Value:    
Total Investments at Fair Value 208,809,414 190,799,741
EBP Plans | EBP, Nonconsolidated, Plan Interest in Master Trust | Adient Ordinary Shares    
Investments - Fair Value:    
Total Investments at Fair Value 18,307,947 16,442,846
EBP Plans | EBP, Nonconsolidated, Plan Interest in Master Trust | Interest Bearing Cash    
Investments - Fair Value:    
Total Investments at Fair Value 677,660 839,415
EBP Plans | EBP, Nonconsolidated, Plan Interest in Master Trust | Other Common Stock    
Investments - Fair Value:    
Total Investments at Fair Value 29,040,553 29,665,476
EBP Plans | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual and Stock Funds    
Investments - Fair Value:    
Total Investments at Fair Value 256,835,574 237,747,478
EBP Plans | EBP, Nonconsolidated, Plan Interest in Master Trust | Common/Collective Trust Funds    
Investments - Fair Value:    
Total Investments at Fair Value 862,262,829 756,661,720
EBP Plans | EBP, Nonconsolidated, Plan Interest in Master Trust | Fixed Income Fund    
Investments - Contract Value:    
Total Investments at Contract Value 65,265,729 70,054,155
EBP Plans | EBP, Nonconsolidated, Master Trust    
Investments - Fair Value:    
Total Investments at Fair Value 1,119,098,403 994,409,198
Investments - Contract Value:    
Total Investments at Contract Value   70,054,155
Net assets available for benefits 1,184,364,132 1,064,463,353
EBP Plans | EBP, Nonconsolidated, Master Trust | Mutual Funds    
Investments - Fair Value:    
Total Investments at Fair Value 208,809,414 190,799,741
EBP Plans | EBP, Nonconsolidated, Master Trust | Adient Ordinary Shares    
Investments - Fair Value:    
Total Investments at Fair Value 18,307,947 16,442,846
EBP Plans | EBP, Nonconsolidated, Master Trust | Interest Bearing Cash    
Investments - Fair Value:    
Total Investments at Fair Value 677,660 839,415
EBP Plans | EBP, Nonconsolidated, Master Trust | Other Common Stock    
Investments - Fair Value:    
Total Investments at Fair Value 29,040,553 29,665,476
EBP Plans | EBP, Nonconsolidated, Master Trust | Mutual and Stock Funds    
Investments - Fair Value:    
Total Investments at Fair Value 256,835,574 237,747,478
EBP Plans | EBP, Nonconsolidated, Master Trust | Common/Collective Trust Funds    
Investments - Fair Value:    
Total Investments at Fair Value 862,262,829 756,661,720
EBP Plans | EBP, Nonconsolidated, Master Trust | Fixed Income Fund    
Investments - Contract Value:    
Total Investments at Contract Value 65,265,729 70,054,155
EBP 001 ADNT    
Investments - Contract Value:    
Net assets available for benefits 1,054,498,258 953,576,937
EBP 001 ADNT | EBP, Nonconsolidated, Plan Interest in Master Trust    
Investments - Fair Value:    
Total Investments at Fair Value 975,959,040 871,903,706
Investments - Contract Value:    
Total Investments at Contract Value 59,239,799 63,260,473
Net assets available for benefits 1,035,198,839 935,164,179
EBP 001 ADNT | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual Funds    
Investments - Fair Value:    
Total Investments at Fair Value 197,259,487 179,990,258
EBP 001 ADNT | EBP, Nonconsolidated, Plan Interest in Master Trust | Adient Ordinary Shares    
Investments - Fair Value:    
Total Investments at Fair Value 16,339,201 14,684,088
EBP 001 ADNT | EBP, Nonconsolidated, Plan Interest in Master Trust | Interest Bearing Cash    
Investments - Fair Value:    
Total Investments at Fair Value 590,983 736,004
EBP 001 ADNT | EBP, Nonconsolidated, Plan Interest in Master Trust | Other Common Stock    
Investments - Fair Value:    
Total Investments at Fair Value 26,908,491 27,521,772
EBP 001 ADNT | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual and Stock Funds    
Investments - Fair Value:    
Total Investments at Fair Value 241,098,162 222,932,122
EBP 001 ADNT | EBP, Nonconsolidated, Plan Interest in Master Trust | Common/Collective Trust Funds    
Investments - Fair Value:    
Total Investments at Fair Value 734,860,878 648,971,584
EBP 001 ADNT | EBP, Nonconsolidated, Plan Interest in Master Trust | Fixed Income Fund    
Investments - Contract Value:    
Total Investments at Contract Value 59,239,799 63,260,473
EBP 001 AVZR    
Investments - Contract Value:    
Net assets available for benefits 38,436,267 33,533,243
EBP 001 AVZR | EBP, Nonconsolidated, Plan Interest in Master Trust    
Investments - Fair Value:    
Total Investments at Fair Value 32,451,708 27,146,826
Investments - Contract Value:    
Total Investments at Contract Value 993,067 1,583,043
Net assets available for benefits 33,444,775 28,729,869
EBP 001 AVZR | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual Funds    
Investments - Fair Value:    
Total Investments at Fair Value 2,821,894 2,702,590
EBP 001 AVZR | EBP, Nonconsolidated, Plan Interest in Master Trust | Adient Ordinary Shares    
Investments - Fair Value:    
Total Investments at Fair Value 378,293 425,565
EBP 001 AVZR | EBP, Nonconsolidated, Plan Interest in Master Trust | Interest Bearing Cash    
Investments - Fair Value:    
Total Investments at Fair Value 19,651 22,916
EBP 001 AVZR | EBP, Nonconsolidated, Plan Interest in Master Trust | Other Common Stock    
Investments - Fair Value:    
Total Investments at Fair Value 429,372 154,949
EBP 001 AVZR | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual and Stock Funds    
Investments - Fair Value:    
Total Investments at Fair Value 3,649,210 3,306,020
EBP 001 AVZR | EBP, Nonconsolidated, Plan Interest in Master Trust | Common/Collective Trust Funds    
Investments - Fair Value:    
Total Investments at Fair Value 28,802,498 23,840,806
EBP 001 AVZR | EBP, Nonconsolidated, Plan Interest in Master Trust | Fixed Income Fund    
Investments - Contract Value:    
Total Investments at Contract Value 993,067 1,583,043
EBP 002    
Investments - Contract Value:    
Net assets available for benefits 95,806,178 83,649,109
EBP 002 | EBP, Nonconsolidated, Plan Interest in Master Trust    
Investments - Fair Value:    
Total Investments at Fair Value 83,117,037 70,932,055
Investments - Contract Value:    
Total Investments at Contract Value 3,107,604 3,293,850
Net assets available for benefits 86,224,641 74,225,905
EBP 002 | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual Funds    
Investments - Fair Value:    
Total Investments at Fair Value 7,439,109 6,891,703
EBP 002 | EBP, Nonconsolidated, Plan Interest in Master Trust | Adient Ordinary Shares    
Investments - Fair Value:    
Total Investments at Fair Value 1,431,029 1,212,520
EBP 002 | EBP, Nonconsolidated, Plan Interest in Master Trust | Interest Bearing Cash    
Investments - Fair Value:    
Total Investments at Fair Value 50,331 59,876
EBP 002 | EBP, Nonconsolidated, Plan Interest in Master Trust | Other Common Stock    
Investments - Fair Value:    
Total Investments at Fair Value 1,219,511 1,545,125
EBP 002 | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual and Stock Funds    
Investments - Fair Value:    
Total Investments at Fair Value 10,139,980 9,709,224
EBP 002 | EBP, Nonconsolidated, Plan Interest in Master Trust | Common/Collective Trust Funds    
Investments - Fair Value:    
Total Investments at Fair Value 72,977,057 61,222,831
EBP 002 | EBP, Nonconsolidated, Plan Interest in Master Trust | Fixed Income Fund    
Investments - Contract Value:    
Total Investments at Contract Value 3,107,604 3,293,850
EBP 003    
Investments - Contract Value:    
Net assets available for benefits 32,520,158 29,802,109
EBP 003 | EBP, Nonconsolidated, Plan Interest in Master Trust    
Investments - Fair Value:    
Total Investments at Fair Value 27,570,618 24,426,611
Investments - Contract Value:    
Total Investments at Contract Value 1,925,259 1,916,789
Net assets available for benefits 29,495,877 26,343,400
EBP 003 | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual Funds    
Investments - Fair Value:    
Total Investments at Fair Value 1,288,924 1,215,190
EBP 003 | EBP, Nonconsolidated, Plan Interest in Master Trust | Adient Ordinary Shares    
Investments - Fair Value:    
Total Investments at Fair Value 159,424 120,673
EBP 003 | EBP, Nonconsolidated, Plan Interest in Master Trust | Interest Bearing Cash    
Investments - Fair Value:    
Total Investments at Fair Value 16,695 20,619
EBP 003 | EBP, Nonconsolidated, Plan Interest in Master Trust | Other Common Stock    
Investments - Fair Value:    
Total Investments at Fair Value 483,179 443,630
EBP 003 | EBP, Nonconsolidated, Plan Interest in Master Trust | Mutual and Stock Funds    
Investments - Fair Value:    
Total Investments at Fair Value 1,948,222 1,800,112
EBP 003 | EBP, Nonconsolidated, Plan Interest in Master Trust | Common/Collective Trust Funds    
Investments - Fair Value:    
Total Investments at Fair Value 25,622,396 22,626,499
EBP 003 | EBP, Nonconsolidated, Plan Interest in Master Trust | Fixed Income Fund    
Investments - Contract Value:    
Total Investments at Contract Value $ 1,925,259 $ 1,916,789