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CUSTOMER ACCOUNTS - Narrative (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Sep. 30, 2024
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Banking and Thrift, Interest [Abstract] |  |
Uninsured deposits | $ 5,302,026 | $ 5,134,192

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- References No definition available. + Details
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- Definition Amount of uninsured deposit liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph e -Publisher SEC + Details
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