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Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Sep. 30, 2024
Variable Interest Entity [Line Items]
Percentage of outstanding equity interests	50.00%
Maximum exposure to trusts	$ 36.4
Reimbursement obligation coverage percentage	12.00%			12.00%
Marathon Direct Lending SLP, LLC
Variable Interest Entity [Line Items]
Ownership percentage	50.00%
MW Advisor, LLC
Variable Interest Entity [Line Items]
Ownership percentage	50.00%
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Deposits assumed	$ 166.5	$ 304.3	$ 334.9
Non-marketable investment carrying value	271.1	216.5
Variable Interest Entity, Not Primary Beneficiary | Unfunded Loan Commitment
Variable Interest Entity [Line Items]
Maximum exposure to loss	$ 401.2	$ 332.8

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The fair value of liabilities assumed in noncash investing or financing activities.

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The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

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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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Carrying Value, Non Marketable Investments

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Reimbursement Obligation, Threshold Percentage Of Losses

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Securitization Trust, Maximum Exposure

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