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INVESTMENT SECURITIES - Schedule of Gains (Losses) Related to Investment Securities Included Within Investment Income (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract] |  |
Gross gains on investment securities | $ 5 | $ 2
Gross losses on investment securities | (3) | (1)
Net recognized gains on investment securities | $ 2 | $ 1

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- Definition Debt And Equity Securities, Realized Gain + References No definition available. + Details
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- Definition Amount of unrealized and realized gain (loss) on investment in debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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