Taxes Summary of the provision for taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 3,033	$ 3,422	$ 55,660
Current State and Local Tax Expense (Benefit)	(996)	5,073	361
Current Foreign Tax Expense (Benefit)	122,878	128,450	144,974
Current Income Tax Expense (Benefit)	124,915	136,945	200,995
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	(2,622)	(4,699)	10,173
Deferred State and Local Income Tax Expense (Benefit)	(1,950)	(161)	3,471
Deferred Foreign Income Tax Expense (Benefit)	(58)	7,162	(16,389)
Deferred Income Tax Expense (Benefit)	(4,630)	2,302	(2,745)
Federal Income Tax Expense (Benefit), Continuing Operations	411	(1,277)	65,833
State and Local Income Tax Expense (Benefit), Continuing Operations	(2,946)	4,912	3,832
Foreign Income Tax Expense (Benefit), Continuing Operations	122,820	135,612	128,585
Provision for taxes	$ 120,285	$ 139,247	$ 198,250