v3.25.1
Stock Based Compensation - Summary of Stock Option and Stock Appreciation Rights ("SARs") Restricted Stock Units ("RSUs") and Performance Stock Units ("PSU") Activity (Detail)
shares in Millions
3 Months Ended
Mar. 31, 2025
shares
Stock Options and SARs  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Shares, Outstanding Opening 31.3
Granted 1.8
Cancelled/forfeited (0.8)
Exercised (3.7)
Vested 0.0
Number of Shares, Outstanding Closing 28.6
PSUs and RSUs  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Granted 2.5
Number of Shares, Outstanding Opening 4.8
Cancelled/forfeited (0.1)
Exercised 0.0
Vested (1.1)
Number of Shares, Outstanding Closing 6.1