Property and Equipment - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 1,749,114	$ 1,437,620
Less: accumulated depreciation	(790,580)	(692,540)
Total property and equipment, net	958,534	745,080
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	876,091	713,412
Furniture and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	346,698	317,567
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	234,585	175,769
Computers and software
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	258,612	230,872
Land
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 33,128	$ 0