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, 2024	Dec. 31, 2023	Dec. 31, 2022
Stock Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding Opening	38.8	43.6	44.9
Granted	2.0	0.6	3.2
Cancelled/forfeited	(1.6)	(1.9)	(1.6)
Vested	0.0	0.0
Exercised	(7.9)	(3.5)	(2.9)
Number of Shares, Outstanding Closing	31.3	38.8	43.6
Weighted Average Exercise Price, Outstanding Opening	$ 57.38	$ 55.91	$ 55.31
Granted , Weighted Average Exercise Price	65.83	58.75	51.45
Cancelled/forfeited, Weighted Average Exercise Price	71.97	68.89	71.5
Exercised, Weighted Average Exercise Price	45.36	33.49	32.6
Weighted Average Exercise Price, Outstanding Closing	$ 60.22	$ 57.38	$ 55.91
Granted	2.0	0.6	3.2
Vested, Weighted Average Grant Date Fair Value	$ 0	$ 0
RSUs and PSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	3.5	1.4	3.1
Number of Shares, Outstanding Opening	3.5	3.4	0.4
Granted	3.5	1.4	3.1
Cancelled/forfeited	(1.1)	(0.6)	(0.1)
Vested	(1.1)	(0.7)
Exercised	0.0	0.0	0.0
Number of Shares, Outstanding Closing	4.8	3.5	3.4
Weighted Average Grant Date Fair Value, Outstanding Opening	$ 59.04	$ 58.71	$ 75.03
Granted, Weighted Average Grant Date Fair Value	65.04	58.54	55.61
Cancelled/forfeited, Weighted Average Grant Date Fair Value	67.61	66.09	72.47
Vested, Weighted Average Grant Date Fair Value	54.77	52.72
Exercised, Weighted Average Grant Date Fair Value	0	0	0
Weighted Average Grant Date Fair Value, Outstanding Closing	$ 62.69	$ 59.04	$ 58.71