RESTRUCTURING COSTS - Schedule of Restructuring Reserve by Type of Cost (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|
| Restructuring Reserve [Roll Forward] | ||||
| Restructuring reserve, beginning balance | $ 87 | |||
| Expense | $ 57 | $ 12 | 170 | $ 41 |
| Utilized/Paid | 153 | |||
| Restructuring reserve, ending balance | 104 | 104 | ||
| Severance and benefits | ||||
| Restructuring Reserve [Roll Forward] | ||||
| Restructuring reserve, beginning balance | 85 | |||
| Expense | 142 | |||
| Utilized/Paid | 129 | |||
| Restructuring reserve, ending balance | 98 | 98 | ||
| Other | ||||
| Restructuring Reserve [Roll Forward] | ||||
| Restructuring reserve, beginning balance | 2 | |||
| Expense | 28 | |||
| Utilized/Paid | 24 | |||
| Restructuring reserve, ending balance | $ 6 | $ 6 | ||