v3.26.3
Stock-Based Compensation - Stock Option Activity 1 (Detail) - USD ($)
$ / shares in Units, $ in Millions
 9 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Options Outstanding 1,000,176  
Options Outstanding, Weighted Average Remaining Life (years) 5 years 4 months 24 days  
Options Outstanding, Aggregate Intrinsic Value $ 393  
Options Exercisable 53,642  
Options Exercisable, Weighted Average Remaining Life (years) 2 months 12 days  
Options Exercisable, Aggregate Intrinsic Value $ 29  
2017 Performance-based Options    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Options Outstanding, Exercise Prices $ 513.5 $ 513.5
Options Outstanding 53,642 300,356
Options Outstanding, Weighted Average Remaining Life (years) 2 months 12 days  
Options Outstanding, Aggregate Intrinsic Value $ 29  
Options Exercisable, Exercise Prices $ 513.5  
Options Exercisable 53,642  
Options Exercisable, Weighted Average Remaining Life (years) 2 months 12 days  
Options Exercisable, Aggregate Intrinsic Value $ 29  
2023 Performance-based Options    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Options Outstanding, Exercise Prices $ 673.58  
Options Outstanding 665,157  
Options Outstanding, Weighted Average Remaining Life (years) 5 years 8 months 12 days  
Options Outstanding, Aggregate Intrinsic Value $ 256  
Options Exercisable, Exercise Prices $ 673.58  
Options Exercisable 0  
Options Exercisable, Weighted Average Remaining Life (years) 0 years  
Options Exercisable, Aggregate Intrinsic Value $ 0  
2023 Time-based Options    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Options Outstanding, Exercise Prices $ 673.58  
Options Outstanding 281,377  
Options Outstanding, Weighted Average Remaining Life (years) 5 years 8 months 12 days  
Options Outstanding, Aggregate Intrinsic Value $ 108  
Options Exercisable, Exercise Prices $ 673.58  
Options Exercisable 0  
Options Exercisable, Weighted Average Remaining Life (years) 0 years  
Options Exercisable, Aggregate Intrinsic Value $ 0