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PROPERTY, PLANT AND EQUIPMENT
 3 Months Ended
Mar. 31, 2023
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment as of March 31, 2023 and December 31, 2022 consisted of the following (in millions):
20232022
Vehicles$10,840 $10,628 
Aircraft22,638 22,598 
Land2,143 2,140 
Buildings6,122 6,032 
Building and leasehold improvements5,142 5,067 
Plant equipment16,454 16,145 
Technology equipment2,445 2,411 
Construction-in-progress2,544 2,409 
68,328 67,430 
Less: Accumulated depreciation and amortization(33,333)(32,711)
Property, Plant and Equipment, Net$34,995 $34,719 
Property, plant and equipment purchased on account was $626 and $176 million as of March 31, 2023 and December 31, 2022, respectively. 
There were no material impairment charges during the three months ended March 31, 2023 or 2022.