v3.26.1
PROPERTY, PLANT AND EQUIPMENT, NET (Tables)
 9 Months Ended
Jun. 30, 2026
Property, Plant, and Equipment [Abstract]  
Schedule of Property, Plant and Equipment, Net
Property, plant and equipment, net, consists of the following (in millions):
June 30,
2026		September 30,
2025
Land, buildings and structures, and leasehold improvements(a)
$539.7 $554.1 
Machinery and equipment(a)
1,156.6 1,154.9 
Office furniture and equipment13.5 23.9 
Mineral interests168.0 169.1 
Construction in progress68.5 51.6 
1,946.3 1,953.6 
Less: accumulated depreciation, depletion, and amortization(1,199.2)(1,183.5)
Property, plant and equipment, net$747.1 $770.1 
(a)    Includes finance lease right-of-use assets.
Schedule of Supplemental Non-cash Activities
The following table provides supplemental non-cash activities (in millions):
Nine Months Ended
June 30,
20262025
Purchases of Property, plant and equipment in Accounts payable$9.6 $4.5 
Purchases of Property, plant and equipment in Accrued expenses and other current liabilities7.4 2.5 
Transfers of Property, plant and equipment from Inventory7.4 5.2