Share-Based Compensation - Schedule of Stock Appreciation Rights Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options outstanding, Weighted Average Exercise Price, Beginning Balance	$ 146.46	$ 126.38	$ 113.15
Granted, Weighted Average Exercise Price	305.44	253.49	236
Exercised, Weighted Average Exercise Price	111.02	95.29	90.84
Cancelled, Weighted Average Exercise Price	246.78	202.05	182.87
SARs Options outstanding, Weighted Average Exercise Price, Ending Balance	170.31	$ 146.46	$ 126.38
SARs Options exercisable, Weighted Average Exercise Price	$ 136.86
SARs Options outstanding, Weighted Average Remaining Contractual Term	5 years 3 months 18 days
SARs Options exercisable, Weighted Average Remaining Contractual Term	4 years 3 months 18 days
SARs Options outstanding, Aggregate Intrinsic Value	$ 598
SARs Options exercisable, Aggregate Intrinsic Value	$ 542
Time SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options Outstanding, Beginning Balance	5,325	5,960	6,162
Granted, SARs Options	491	580	570
Exercised, SARs Options	(1,128)	(1,156)	(660)
Cancelled, SARs Options	(101)	(59)	(112)
SARs Options Outstanding, Ending Balance	4,587	5,325	5,960
SARs Options Exercisable, Ending Balance	3,322
Performance SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options Outstanding, Beginning Balance	44	127	286
Granted, SARs Options	0	0	0
Exercised, SARs Options	(44)	(83)	(159)
Cancelled, SARs Options	0	0	0
SARs Options Outstanding, Ending Balance	0	44	127
SARs Options Exercisable, Ending Balance	0
Total SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options Outstanding, Beginning Balance	5,369	6,087	6,448
Granted, SARs Options	491	580	570
Exercised, SARs Options	(1,172)	(1,239)	(819)
Cancelled, SARs Options	(101)	(59)	(112)
SARs Options Outstanding, Ending Balance	4,587	5,369	6,087
SARs Options Exercisable, Ending Balance	3,322