Other Liabilities (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]
Liability for pension and post employment benefits	$ 61,490,000	$ 64,952,000
Deferred compensation	39,259,000	36,667,000
Liability for uncertain tax positions	84,607,000	80,898,000
Other	43,855,000	40,851,000
Other liabilities (less current portion)	229,211,000	223,368,000
Contingent consideration liability	9,000,000	8,300,000
Noncurrent obligation for the purchase of intangible assets	$ 31,500,000	$ 31,400,000