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Stock-based Compensation - Summary of Stock Option and SAR Activity as well as RSU Activity (Detail) - $ / shares
shares in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Stock Options and SARs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Shares, Outstanding Opening 31.3 38.8 43.6
Granted 1.8 2.0 0.6
Cancelled/forfeited (1.0) (1.6) (1.9)
Exercised (7.8) (7.9) (3.5)
Vested 0.0 0.0 0.0
Number of Shares, Outstanding Closing 24.3 31.3 38.8
Weighted Average Exercise Price, Outstanding Opening $ 60.22 $ 57.38 $ 55.91
Granted , Weighted Average Exercise Price 88.76 65.83 58.75
Cancelled/forfeited, Weighted Average Exercise Price 76.39 71.97 68.89
Exercised, Weighted Average Exercise Price 54.94 45.36 33.49
Vested, Weighted-Average Exercise Price 0 0 0
Weighted Average Exercise Price, Outstanding Closing $ 63.39 $ 60.22 $ 57.38
Granted 1.8 2.0 0.6
Vested, Weighted Average Grant Date Fair Value $ 0 $ 0 $ 0
RSUs and PSUs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted 2.9 3.5 1.4
Cancelled/forfeited (0.4)    
Vested, Weighted-Average Exercise Price $ 61.01 $ 54.77 $ 52.72
Number of Shares, Outstanding Opening 4.8 3.5 3.4
Granted 2.9 3.5 1.4
Cancelled/forfeited   (1.1) (0.6)
Vested (2.3) (1.1) (0.7)
Exercised 0.0 0.0 0.0
Number of Shares, Outstanding Closing 5.0 4.8 3.5
Weighted Average Grant Date Fair Value, Outstanding Opening $ 62.69 $ 59.04 $ 58.71
Granted, Weighted Average Grant Date Fair Value 88.07 65.04 58.54
Cancelled/forfeited, Weighted Average Grant Date Fair Value 70.81 67.61 66.09
Vested, Weighted Average Grant Date Fair Value 61.01 54.77 52.72
Exercised, Weighted Average Grant Date Fair Value 0 0 0
Weighted Average Grant Date Fair Value, Outstanding Closing $ 77.88 $ 62.69 $ 59.04