Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Current Federal Tax Expense (Benefit)	$ 45,314	$ 82,532	$ 101,857
Current State and Local Tax Expense (Benefit)	7,022	18,022	20,123
Current International Tax Expense (Benefit)	110,208	85,310	88,707
Current Income Tax Expense (Benefit)	162,544	185,864	210,687
Deferred Federal Income Tax Expense (Benefit)	29,973	12,127	(1,097)
Deferred State and Local Income Tax Expense (Benefit)	7,161	(1,828)	(2,071)
Deferred International Income Tax Expense (Benefit)	(9,004)	(4,466)	(22,576)
Deferred income taxes	28,130	5,833	(25,744)
Provision for income taxes	$ 190,674	$ 191,697	$ 184,943