Other, net - Other Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Income and Expenses [Abstract]
Foreign exchange rate gains (losses), net	$ (5,725)	$ 26,158	$ (23,444)	$ 25,229
Noncontrolling investment basis adjustment	0	0	0	77,400
Other	(3,325)	125	(13,674)	11,732
Other Nonoperating Income (Expense)	$ (9,050)	$ 26,283	$ (37,118)	$ 114,361