Property, Equipment And Leasehold Improvements, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 1,227,368	$ 1,260,552
Accumulated depreciation and amortization	(518,126)	(538,677)
Property, equipment and leasehold improvements, net	709,242	721,875
Land, Buildings And Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 379,927	371,383
Land, Buildings And Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	5 years
Land, Buildings And Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	25 years
Beef Processing Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 330,453	315,238
Beef Processing Machinery And Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	2 years
Beef Processing Machinery And Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	15 years
Other Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 30,716	113,412
Other Machinery And Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	3 years
Other Machinery And Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	15 years
Corporate Aircraft [Member]
Property, Plant and Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 104,862	104,862
Depreciable Lives	10 years
Furniture, Fixtures And Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 323,276	311,845
Furniture, Fixtures And Office Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	3 years
Furniture, Fixtures And Office Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	10 years
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 54,693	38,903
Other [Member]
Property, Plant and Equipment [Line Items]
Property, equipment and leasehold improvements, gross	$ 3,441	$ 4,909
Other [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	3 years
Other [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Lives	10 years