ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Millions |
3 Months Ended | 4 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| AOCI Attributable to Parent, Net of Tax [Roll Forward] | ||||||
| Beginning Balance | $ 31,647 | |||||
| Translation adjustments | $ 40 | $ (13) | (539) | $ (3) | ||
| Ending Balance | 34,568 | 27,838 | 34,568 | 27,838 | ||
| Foreign currency translation loss: | ||||||
| AOCI Attributable to Parent, Net of Tax [Roll Forward] | ||||||
| Beginning Balance | (1,398) | (1,407) | (1,275) | (1,420) | ||
| Translation adjustments | 33 | (11) | (90) | 2 | ||
| Ending Balance | (1,365) | (1,418) | (1,365) | (1,418) | ||
| Retirement plans adjustments: | ||||||
| AOCI Attributable to Parent, Net of Tax [Roll Forward] | ||||||
| Beginning Balance | (408) | 55 | 48 | 58 | ||
| Prior service cost arising during period | 0 | 0 | (455) | 0 | ||
| Reclassifications from AOCL | 7 | (2) | 6 | (5) | ||
| Ending Balance | (401) | 53 | (401) | 53 | ||
| Accumulated Other Comprehensive Loss | ||||||
| AOCI Attributable to Parent, Net of Tax [Roll Forward] | ||||||
| Beginning Balance | (1,806) | (1,352) | (1,227) | (1,362) | ||
| Translation adjustments | [1] | 40 | (13) | (539) | (3) | |
| Ending Balance | $ (1,766) | $ (1,365) | $ (1,766) | $ (1,365) | ||
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