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Fair Value Measurements - Litigation Financing - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 17, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Fair value of the obligation				$ 58.6		$ 52.1
Asset at fair value, changes in fair value resulting from changes in assumptions		$ 5.2	$ 1.7	$ 6.5	$ 5.1
Litigation settlement, amount awarded from Mexico	$ 37.1

X

- Definition

Fair value of the obligation

+ References

No definition available.

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X

- Definition

Amount of increase (decrease) in fair value from changes in the assumptions or model used to calculate the fair value of a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

Amount awarded from other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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