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DEPOSITS - Narrative (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Other Liabilities [Abstract] |  |
Time deposits, at or above FDIC insurance limit | $ 642 | $ 574
Time deposits, at or above FDIC insurance limit of total deposits | 5.00% | 4.00%

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- Definition Time Deposits, at or Above FDIC Insurance Limit, Of Total Deposits + References No definition available. + Details
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Namespace Prefix: | bfh_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations that meet or exceed the Federal Deposit Insurance Corporation (FDIC) insurance limit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 405 -Topic 942 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478353/942-405-50-1 + Details
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