Fair Value of Financial Instruments - Additional Information (Detail) SFr in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023 CHF (SFr)	Sep. 30, 2023 Health_Center
PHP Holdings [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Discount for lack of marketability percentage on Springstone equity investment	8.00%	8.00%
Swiss Medical Network [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Favorable fair market value adjustment on investment | SFr	SFr 20
Fair Value, Recurring [Member] | Colombia [Member]
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]
Number of facilities acquired | Health_Center		3