v3.25.2
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
6 Months Ended
Jun. 30, 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 (0.9)
Exercised (4.4)
Vested 0.0
Number of Shares, Outstanding Closing 27.8
PSUs and RSUs  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Granted 2.6
Number of Shares, Outstanding Opening 4.8
Cancelled/forfeited (0.2)
Exercised 0.0
Vested (1.5)
Number of Shares, Outstanding Closing 5.7