Other Liabilities - Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
Pension and post-employment benefits	$ 73,683	$ 81,012
Deferred compensation	41,992	41,096
Uncertain tax positions	101,908	69,898
Other	32,808	42,423
Other liabilities (less current portion)	$ 250,391	$ 234,429