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, 2023	Dec. 31, 2022	Dec. 31, 2021
Stock Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding Opening	43.6	44.9	42.7
Granted	0.6	3.2	9.5
Cancelled/forfeited	(1.9)	(1.6)	(2.1)
Vested
Exercised	(3.5)	(2.9)	(5.2)
Number of Shares, Outstanding Closing	38.8	43.6	44.9
Weighted Average Exercise Price, Outstanding Opening	$ 55.91	$ 55.31	$ 48.16
Granted , Weighted Average Exercise Price	58.75	51.45	80.24
Cancelled/forfeited, Weighted Average Exercise Price	68.89	71.5	61.9
Exercised, Weighted Average Exercise Price	33.49	32.6	39.23
Weighted Average Exercise Price, Outstanding Closing	57.38	$ 55.91	55.31
Vested, Weighted Average Grant Date Fair Value
RSUs and PSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding Opening	3.4	0.4	0.2
Granted	1.4	3.1	0.4
Cancelled/forfeited	(0.6)	(0.1)
Vested	(0.7)		(0.2)
Exercised
Number of Shares, Outstanding Closing	3.5	3.4	0.4
Weighted Average Grant Date Fair Value, Outstanding Opening	$ 58.71	$ 75.03	$ 44.96
Granted, Weighted Average Grant Date Fair Value	58.54	55.61	75.03
Cancelled/forfeited, Weighted Average Grant Date Fair Value	66.09	72.47
Vested, Weighted Average Grant Date Fair Value	52.72		45.59
Exercised, Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Outstanding Closing	$ 59.04	$ 58.71	$ 75.03