Contingencies - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2024	Dec. 31, 2023
University of St. Augustine for Health Sciences, LLC [Member]
Loss Contingencies [Line Items]
Percentage of investment in equity affiliate	100.00%
Minimum [Member] \| University of St. Augustine for Health Sciences, LLC [Member]
Loss Contingencies [Line Items]
Expected payment for acquisition	$ 142.0
Maximum [Member] \| University of St. Augustine for Health Sciences, LLC [Member]
Loss Contingencies [Line Items]
Expected payment for acquisition	144.0
Other Accrued Expenses [Member]
Loss Contingencies [Line Items]
Accrual for legal fees	$ 1.9	$ 2.4

Purchase price of expected business acquisition prior to consideration being transferred. Excludes asset acquisition.

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