Property and Equipment

12 Months Ended

Jan. 01, 2022

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

Property and equipment (which are carried at cost) as of 2021 and 2020 year end are as follows: 

(Amounts in millions)	2021		2020
Land	$	33.8	$	34.0
Buildings and improvements	434.4		432.0
Machinery, equipment and computer software	1,059.2		1,033.4
Property and equipment – gross	1,527.4		1,499.4
Accumulated depreciation and amortization	(1,009.2)		(973.2)
Property and equipment – net	$	518.2	$	526.2

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 $75.6 million, $73.3 million and $70.1 million in 2021, 2020 and 2019, respectively.