Shareholders' Equity - Assumptions to Estimate Fair Value of Employee Stock Purchase Rights on Date of Grant Using Black Scholes Option Pricing Model (Detail) - Employee Stock Purchase Plan - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	1.20%	1.30%	1.10%
Volatility	28.00%	29.00%	20.00%
Risk-free interest rates	5.37%	3.02%	0.08%
Expected life (years)	1 year	1 year	1 year
Weighted average fair value	$ 31.56	$ 27.07	$ 28.55