Quarterly report [Sections 13 or 15(d)]

Share-Based Compensation - Summary of Activity Under Share-Based Compensation Plans (Parenthetical) (Detail)

v3.26.1
Share-Based Compensation - Summary of Activity Under Share-Based Compensation Plans (Parenthetical) (Detail) - shares
shares in Millions
3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding SARs 3.9 3.9
Performance condition SARs [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share Based Compensation Arrangement By Share Based Payment Award Stock Appreciation Rights Vested And Expected 0.5  
Exercisable SARs 0.5  
Performance condition SARs [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Forfeited SARs 0.1  
Performance Based Stock Unit Awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares, granted during period 1.2  
Number of Shares, Expected to Vest 2.3  
Performance Based Stock Unit Awards [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of share based payment awards other than options outstanding and nonvested that can vest maximum 2.8 1.6