Revenue Recognition - Summary of Revenue Recognition (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Net Swap Fee and Valuation Income [Member]
Disaggregation of Revenue [Line Items]
Gain (loss) on change in fair value of underlying swaps not within the scope of ASC 606	$ 0.3	$ (0.7)	$ 0.2	$ (1.7)

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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+ Details