Balance Sheet Components - Property And Equipment (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 837,511,000	$ 786,800,000
Less: Accumulated depreciation	(385,112,000)	(368,519,000)
Property and equipment, net	452,399,000	418,281,000
Accrued participation liabilities, due in next operating cycle	0
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	304,189,000	282,028,000
Information technology
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 239,241,000	224,296,000
Estimated Useful Lives	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 76,588,000	63,667,000
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	15 years
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 32,787,000	73,468,000
Estimated Useful Lives	30 years
Corporate aircraft
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 104,985,000	62,560,000
Estimated Useful Lives	8 years
DVD operations equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 45,437,000	53,416,000
Estimated Useful Lives	5 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,398,000	1,692,000
Estimated Useful Lives	3 years
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 6,125,000	6,125,000
Capital work-in-progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 23,761,000	$ 19,548,000