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	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net Earnings Attributable to Shareholders
Basic earnings attributable to shareholders	$ 1,357,399	$ 1,415,492	$ 696,140
Diluted earnings attributable to shareholders	$ 1,357,399	$ 1,415,492	$ 696,140
Weighted Average Shares
Weighted average basic shares outstanding	163,010	169,145	168,333
Effect of dilutive potential common shares	1,417	2,105	2,563
Weighted average diluted shares outstanding	164,427	171,250	170,896
Earnings Per Share [Abstract]
Basic earnings attributable to shareholders per share	$ 8.33	$ 8.37	$ 4.14
Diluted earnings attributable to shareholders per share	$ 8.26	$ 8.27	$ 4.07