Income Taxes - Components of Earnings Before Income Taxes and Noncontrolling Interests (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
United States	$ 1,215,909	$ 1,806,704	$ 3,160,111
Foreign	(380,371)	(23,897)	69,280
Earnings before income taxes and noncontrolling interests	$ 835,538	$ 1,782,807	$ 3,229,391

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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