v3.26.1
FAIR VALUE, Changes in Fair Value for Level 3 Liabilities (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Trading liabilities      
Changes in Level 3 curring fair value measurements, liabilities [Roll Forward]      
Fair value beginning of period $ 0   $ 0
Total gains/(losses) included in earnings 1   1
Purchases and contributions 0   0
Sales and distributions 0   0
Transfers:      
Into Level 3 0   0
Out of Level 3 0   0
Fair value end of period 1   1
Unrealized gains/(losses) for the period included in earnings for instruments held at the end of the reporting period 1   1
Derivative liabilities      
Changes in Level 3 curring fair value measurements, liabilities [Roll Forward]      
Fair value beginning of period   $ (2) (2)
Total gains/(losses) included in earnings   2 1
Purchases and contributions   0 0
Sales and distributions   0 1
Transfers:      
Into Level 3   0 0
Out of Level 3   0 0
Fair value end of period $ 0 0 0
Unrealized gains/(losses) for the period included in earnings for instruments held at the end of the reporting period   $ 0 $ 0