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FIXED ASSETS, NET
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
FIXED ASSETS, NET FIXED ASSETS, NET
Fixed assets, net consisted of the following:

(In millions)Estimated Useful Lives (Years)20212020
Land$114 $109 
Buildings and improvements
20 to 40
1,084 1,160 
Machinery, tools and equipment
3 to 25
2,093 2,138 
Rental assets
3 to 12
381 416 
Other, including assets under construction304 261 
Fixed assets, gross3,976 4,084 
Accumulated depreciation(2,150)(2,274)
Fixed assets, net$1,826 $1,810 

Depreciation expense was $238 million, $234 million and $219 million for the years ended December 31, 2021, 2020 and 2019, respectively.