v3.26.1
Stock-Based Compensation - Stock Option Activity 1 (Detail) - USD ($)
$ / shares in Units, $ in Millions
 6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Options Outstanding 1,073,034  
Options Outstanding, Weighted Average Remaining Life (years) 5 years 3 months 18 days  
Options Outstanding, Aggregate Intrinsic Value $ 330  
Options Exercisable 126,500  
Options Exercisable, Weighted Average Remaining Life (years) 4 months 24 days  
Options Exercisable, Aggregate Intrinsic Value $ 57  
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 126,500 300,356
Options Outstanding, Weighted Average Remaining Life (years) 4 months 24 days  
Options Outstanding, Aggregate Intrinsic Value $ 57  
Options Exercisable, Exercise Prices $ 513.5  
Options Exercisable 126,500  
Options Exercisable, Weighted Average Remaining Life (years) 4 months 24 days  
Options Exercisable, Aggregate Intrinsic Value $ 57  
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 10 months 24 days  
Options Outstanding, Aggregate Intrinsic Value $ 192  
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 10 months 24 days  
Options Outstanding, Aggregate Intrinsic Value $ 81  
Options Exercisable, Exercise Prices $ 673.58  
Options Exercisable 0  
Options Exercisable, Weighted Average Remaining Life (years) 0 years  
Options Exercisable, Aggregate Intrinsic Value $ 0