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Business and Summary of Significant Accounting Policies - Revenue Recognition - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Summary Of Business And Significant Accounting Policies [Line Items]      
Effect of change on after-tax net income $ 1,163,109 $ 719,307 $ 656,982
ASU 2014-09 | Revision of Prior Period Change in Accounting Principle Adjustment      
Summary Of Business And Significant Accounting Policies [Line Items]      
Effect of change on after-tax net income $ 2,000    
Medicare | ASU 2014-09      
Summary Of Business And Significant Accounting Policies [Line Items]      
Percentage of estimated net revenue adjustment 1.00% 1.00% 1.00%