XML 28 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 (which are carried at cost) as of 2022 and 2021 year end are as follows: 
(Amounts in millions)20222021
Land$32.6 $33.8 
Buildings and improvements434.7 434.4 
Machinery, equipment and computer software1,069.3 1,059.2 
Property and equipment – gross1,536.6 1,527.4 
Accumulated depreciation and amortization(1,024.0)(1,009.2)
Property and equipment – net$512.6 $518.2 

The estimated service lives of property and equipment are principally as follows: 

Buildings and improvements  
3 to 50 years
Machinery, equipment and computer software  
2 to 15 years
Depreciation expense was $71.5 million, $75.6 million and $73.3 million in 2022, 2021 and 2020, respectively.