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Fair Value of Financial Instruments - Additional Information (Detail)
SFr in Millions, $ in Millions
12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2023
CHF (SFr)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]        
Impairment of assets $ (170.0)   $ (2.9) $ (22.4)
Maximum [Member]        
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]        
Market capitalization percentage     9.00%  
Minimum [Member]        
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]        
Market capitalization percentage     7.50%  
Steward's Equity [Member]        
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]        
Equity impairment charges $ 90.0      
Equity investments percentage 9.90% 9.90%    
Working capital loans $ 212.0      
Proceeds from Loans $ 362.0      
Steward's Equity [Member] | Equity Securities [Member] | International Joint Venture [Member]        
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]        
Remaining equity investment percentage 90.10% 90.10%    
Steward and International Joint Venture [Member] | Equity Securities [Member]        
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]        
Addition loan collateralized by equity $ 219.0      
Springstone Inc. and International Joint Venture [Member]        
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]        
Equity investments unrealized gain/loss     $ 7.0  
Favorable fair market value adjustment on investment $ 34.0      
PHP Holdings [Member]        
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]        
Discount rate on investment 11.00% 11.00%    
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    
Pennsylvania [Member]        
Financial Instruments Measured At Fair Value On Recurring Basis [Line Items]        
Impairment of assets     $ 170.0