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- Definition

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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- 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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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

Amount after tax of income (loss) from continuing operations attributable to the parent.

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Amount of carryover of excess expense potentially reimbursable to adviser but not recorded as liability by investment company.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisitions and Equity Investments - Additional Information (Detail) - RFQ Hub Holdings LLC [Member] - USD ($) $ in Millions		3 Months Ended
	Apr. 19, 2024	Mar. 31, 2025	Mar. 31, 2024	May 01, 2022
Business Acquisition [Line Items]
Cash consideration	$ 37.9
Recorded investments				$ 34.4
Proportionate share in net earnings		$ 0.3	$ 0.4
Receivable from the equity method investee		0.6
Reimbursable support costs for equity method investee		0.6	$ 0.5
Other Investees [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	90.00%
Prepaid Expenses and Other Assets [Member]
Business Acquisition [Line Items]
Recorded investments		$ 34.7