v3.25.4
Other Expenses (Income), Net (Tables)
 9 Months Ended
Dec. 31, 2025
Other Income and Expenses [Abstract]  
Schedule of other nonoperating income (expense)
Other expenses (income), net consists of the following:
 
Three Months Ended
December 31,
Nine Months Ended
December 31,
in millions2025202420252024
September Oswego fire
Fixed asset charges$— $— $10 $— 
Inventory charges— — 1 — 
Idle fixed costs(1)
61 — 64 — 
Repairs and clean-up costs77 — 83 — 
Excess costs to fulfill customer contracts(2)
185 — 186 — 
Property insurance recoveries(25)— (25)— 
Other2 — 2 — 
September Oswego fire losses, net of recoveries
300 — 321 — 
November Oswego fire
Fixed asset charges26 — 26 — 
Repairs and clean-up costs26 — 26 — 
Property insurance recoveries(25)— (25)— 
November Oswego fire losses, net of recoveries
27 — 27 — 
Sierre flood
Fixed asset charges— — — 30 
Inventory charges— — — 12 
Idle fixed costs(1)
— 4 — 20 
Repairs and clean-up costs2 14 9 31 
Excess costs to fulfill customer contracts(2)
— 4 4 27 
Property insurance recoveries— (18)(3)(18)
Other— 1 — 4 
Sierre flood losses, net of recoveries2 5 10 106 
Sierre business interruption insurance recoveries— (15)— (15)
Currency losses, net(3)
4 1 5 4 
Unrealized losses (gains) on change in fair value of derivative instruments, net(4)
33 (18)70 (34)
Realized losses (gains) on change in fair value of derivative instruments, net(4)
14 21 (13)53 
Loss on sale or disposal of assets, net
— — 3 2 
Interest income
(4)(5)(14)(18)
Non-operating net periodic benefit cost(5)
(2)— (5)(1)
Other, net7 7 22 24 
Other expenses (income), net
$381 $(4)$426 $121 
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(1)Idle fixed costs consist of employment costs and other operating expenses incurred during the period in which operations were halted at the Oswego and Sierre plants.
(2)Excess costs to fulfill customer contracts consist of freight costs, including import tariffs, incurred to reroute material to fulfill customer contracts related to plant shutdowns and price premiums to procure external third-party material to meet customer demand.
(3)Includes losses recognized on balance sheet remeasurement currency exchange contracts, net. See Note 9 – Currency Losses (Gains) for further details.
(4)See Note 10 – Financial Instruments and Commodity Contracts for further details.
(5)Represents net periodic benefit cost, exclusive of pension curtailment and settlement gains and service cost, for the Company's pension and other post-retirement plans. For further details, refer to Note 8 – Postretirement Benefit Plans.