MORTGAGE SERVICING RIGHTS - Fair Value Disclosures (Detail) - MSRs - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Servicing
Fair value of the MSRs	$ 1,400.0	$ 1,400.0
Sensitivity Analysis of Fair Value, example 1, impact of percent adverse change in discount rate, percent	1.00%
Decrease in fair value as a result of 100 basis point increase in discount rate	$ 43.2
Sensitivity Analysis of Fair Value, example 2, impact of percent adverse change in discount rate, percent	2.00%
Decrease in fair value as a result of 200 basis point increase in discount rate	$ 83.5

Fair value of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The hypothetical financial impact of a 1 percent adverse change in the discount rate on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date.

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The hypothetical financial impact of a 2 percent adverse change in the discount rate on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date.

+ References

No definition available.

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