Earnings Per Share (Schedule of Earnings Per Share) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net income attributable to the Company	$ 445,250	$ 182,279	$ 981,165	$ 416,138
Basic weighted-average shares	110,956	112,584	111,000	112,913
Effect of dilutive restricted stock units (“RSUs”)	412	259	344	263
Diluted weighted-average shares	111,368	112,843	111,344	113,176
Basic	$ 4.01	$ 1.62	$ 8.84	$ 3.69
Diluted	$ 4.00	$ 1.62	$ 8.81	$ 3.68