Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Current Federal Tax Expense (Benefit)	$ 3,887	$ (12,345)	$ 119,298
Current State and Local Tax Expense (Benefit)	(69)	20,141	(6,156)
Current International Tax Expense (Benefit)	134,808	178,767	134,987
Current Income Tax Expense (Benefit)	138,626	186,563	248,129
Deferred Federal Income Tax Expense (Benefit)	(54,356)	19,207	31,167
Deferred State and Local Income Tax Expense (Benefit)	(2,710)	312	13,535
Deferred International Income Tax Expense (Benefit)	6,778	(18,283)	(6,290)
Deferred income taxes	(50,288)	1,236	38,412
Provision (benefit) for income taxes	$ 88,338	$ 187,799	$ 286,541