Share-Based Compensation - Schedule of Stock Appreciation Rights Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options outstanding, Weighted Average Exercise Price, Beginning Balance	$ 170.31	$ 146.46	$ 126.38
Granted, Weighted Average Exercise Price	329.8	305.44	253.49
Exercised, Weighted Average Exercise Price	125.1	111.02	95.29
Cancelled, Weighted Average Exercise Price	308.57	246.78	202.05
SARs Options outstanding, Weighted Average Exercise Price, Ending Balance	194.62	$ 170.31	$ 146.46
SARs Options exercisable, Weighted Average Exercise Price	$ 158.2
SARs Options outstanding, Weighted Average Remaining Contractual Term	5 years 1 month 6 days
SARs Options exercisable, Weighted Average Remaining Contractual Term	4 years
SARs Options outstanding, Aggregate Intrinsic Value	$ 1,118
SARs Options exercisable, Aggregate Intrinsic Value	$ 930
Time SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options Outstanding, Beginning Balance	4,587	5,325	5,960
Granted, SARs Options	418	491	580
Exercised, SARs Options	(859)	(1,128)	(1,156)
Cancelled, SARs Options	(40)	(101)	(59)
SARs Options Outstanding, Ending Balance	4,106	4,587	5,325
SARs Options Exercisable, Ending Balance	3,012
Performance SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs Options Outstanding, Beginning Balance	0	44	127
Granted, SARs Options	0	0	0
Exercised, SARs Options	0	(44)	(83)
Cancelled, SARs Options	0	0	0
SARs Options Outstanding, Ending Balance	0	0	44
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	4,587	5,369	6,087
Granted, SARs Options	418	491	580
Exercised, SARs Options	(859)	(1,172)	(1,239)
Cancelled, SARs Options	(40)	(101)	(59)
SARs Options Outstanding, Ending Balance	4,106	4,587	5,369
SARs Options Exercisable, Ending Balance	3,012