XML 33 R15.htm IDEA: XBRL DOCUMENT v3.22.4
Property and Equipment
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and equipment
Property and equipment were comprised of the following:
 December 31,
 20222021
Land$32,656 $34,009 
Buildings427,962 496,455 
Leasehold improvements3,925,244 3,828,404 
Equipment and information systems, including internally developed software3,759,274 3,292,176 
New center and capital asset projects in progress376,633 592,063 
 8,521,769 8,243,107 
Less accumulated depreciation(5,265,372)(4,763,135)
 $3,256,397 $3,479,972 
Depreciation and amortization expenses are computed using the straight-line method over the useful lives of the assets estimated as follows: buildings, 25 years to 40 years; leasehold improvements, the shorter of ten years or the expected lease term; and equipment and information systems, including internally developed software, principally three years to 15 years. Depreciation expense on property and equipment was $721,133, $667,755 and $616,626 for 2022, 2021 and 2020, respectively.
Interest on debt incurred during the development of new centers and other capital asset projects is capitalized as a component of the asset cost based on the respective in-process capital asset balances. Interest capitalized was $12,677, $15,275 and $17,944 for 2022, 2021 and 2020, respectively.