Income Taxes - Components of Earnings Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Domestic	$ 1,030,609	$ 981,188	$ 1,078,678
International	716,479	795,175	807,612
Earnings before income taxes	$ 1,747,088	$ 1,776,363	$ 1,886,290