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Property, Plant and Equipment Property, Plant and Equipment (Tables)
6 Months Ended
Sep. 30, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Information related to the major categories of our depreciable assets is as follows:
 September 30,
2021
March 31,
2021
Land and land improvements (1)
$83,479 $69,477 
Buildings and leasehold improvements678,945 567,132 
Machinery and equipment883,897 779,044 
Information systems225,890 193,222 
Radioisotope579,617 565,681 
Construction in progress (1)
282,313 211,381 
Total property, plant, and equipment2,734,141 2,385,937 
Less: accumulated depreciation and depletion(1,222,886)(1,150,537)
Property, plant, and equipment, net$1,511,255 $1,235,400 
(1)Land is not depreciated. Construction in progress is not depreciated until placed in service.