Basic and Diluted Earnings per Share - Numerator and Denominator of the Basic and Diluted Per Share Computations for Earnings Attributable to Shareholders Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net Earnings Attributable to Shareholders
Basic earnings attributable to shareholders	$ 226,011	$ 346,109
Diluted earnings attributable to shareholders	$ 226,011	$ 346,109
Weighted Average Shares
Weighted average basic shares outstanding	154,164	167,499
Effect of dilutive potential common shares	1,308	1,717
Weighted average diluted shares outstanding	155,472	169,216
Earnings Per Share [Abstract]
Basic earnings attributable to shareholders per share	$ 1.47	$ 2.07
Diluted earnings attributable to shareholders per share	$ 1.45	$ 2.05