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Property and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Abstract]    
Land $ 32,656 $ 34,009
Buildings 427,962 496,455
Leasehold improvements 3,925,244 3,828,404
Equipment and information systems, including internally developed software 3,759,274 3,292,176
New center and capital asset projects in progress 376,633 592,063
Property, plant and equipment, gross, total 8,521,769 8,243,107
Less accumulated depreciation (5,265,372) (4,763,135)
Property and equipment, net $ 3,256,397 $ 3,479,972