Stock-Based Compensation - Analysis of Option Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Options
Options Outstanding-beginning of year (in shares)	7,111,231	6,724,358	7,203,765
Options Exercised (in shares)	(1,191,704)	(936,289)	(1,810,559)
Options Expired and forfeited (in shares)	(5,977)	(3,437)	(21,250)
Options Outstanding-end of year (in shares)	7,197,662	7,111,231	6,724,358
Options Exercisable at end of year (in shares)	3,659,755	3,389,399	2,999,788
Weighted-Average Exercise Price
Outstanding-beginning of year, weighted average exercise price (in dollars per share)	$ 78.28	$ 70.07	$ 61.72
Options exercised in the period - weighted average exercise price (in dollars per share)	58.59	51.37	45.93
Options expired and forfeited in the period - weighted average exercise price (in dollars per share)	74.15	75.27	82.89
Outstanding-end of year, weighted average exercise price (in dollars per share)	85.11	78.28	70.07
Exercisable at end of year, weighted average exercise price (in dollars per share)	$ 75.55	$ 67.19	$ 57.27
7-year term
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contract Period	7 years
Options
Options Granted (in shares)	1,284,112	1,326,599	1,352,402
Weighted-Average Exercise Price
Options granted in the period- weighted average exercise price (in dollars per share)	$ 98.28	$ 100.85	$ 82.43