Share-Based Compensation - Schedule of Stock Appreciation Rights Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options outstanding, Weighted Average Exercise Price, Beginning Balance	$ 126.38	$ 113.15	$ 91.53
Granted, Weighted Average Exercise Price	253.49	236	174.98
Exercised, Weighted Average Exercise Price	95.29	90.84	67.57
Cancelled, Weighted Average Exercise Price	202.05	182.87	138.32
SARs Options outstanding, Weighted Average Exercise Price, Ending Balance	146.46	$ 126.38	$ 113.15
SARs Options exercisable, Weighted Average Exercise Price	$ 118.67
SARs Options outstanding, Weighted Average Remaining Contractual Term	5 years 6 months
SARs Options exercisable, Weighted Average Remaining Contractual Term	4 years 6 months
SARs Options outstanding, Aggregate Intrinsic Value	$ 667
SARs Options exercisable, Aggregate Intrinsic Value	$ 576
Time SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options Outstanding, Beginning Balance	5,960	6,162	7,836
Granted, SARs Options	580	570	877
Exercised, SARs Options	(1,156)	(660)	(2,443)
Cancelled, SARs Options	(59)	(112)	(108)
SARs Options Outstanding, Ending Balance	5,325	5,960	6,162
SARs Options Exercisable, Ending Balance	3,748
Performance SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options Outstanding, Beginning Balance	127	286	819
Granted, SARs Options	0	0	0
Exercised, SARs Options	(83)	(159)	(533)
Cancelled, SARs Options	0	0	0
SARs Options Outstanding, Ending Balance	44	127	286
SARs Options Exercisable, Ending Balance	44
Total SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options Outstanding, Beginning Balance	6,087	6,448	8,655
Granted, SARs Options	580	570	877
Exercised, SARs Options	(1,239)	(819)	(2,976)
Cancelled, SARs Options	(59)	(112)	(108)
SARs Options Outstanding, Ending Balance	5,369	6,087	6,448
SARs Options Exercisable, Ending Balance	3,792